From 5f1b7a5eafd02b90370f00744154ff84afbd59a5 Mon Sep 17 00:00:00 2001 From: Peter Eisentraut Date: Wed, 21 Dec 2022 06:37:11 +0100 Subject: [PATCH v13] Transparent column encryption This feature enables the automatic, transparent encryption and decryption of particular columns in the client. The data for those columns then only ever appears in ciphertext on the server, so it is protected from DBAs, sysadmins, cloud operators, etc. as well as accidental leakage to server logs, file-system backups, etc. The canonical use case for this feature is storing credit card numbers encrypted, in accordance with PCI DSS, as well as similar situations involving social security numbers etc. One can't do any computations with encrypted values on the server, but for these use cases, that is not necessary. This feature does support deterministic encryption as an alternative to the default randomized encryption, so in that mode one can do equality lookups, at the cost of some security. This functionality also exists in other database products, and the overall concepts were mostly adopted from there. (Note: This feature has nothing to do with any on-disk encryption feature. Both can exist independently.) You declare a column as encrypted in a CREATE TABLE statement. The column value is encrypted by a symmetric key called the column encryption key (CEK). The CEK is a catalog object. The CEK key material is in turn encrypted by an asymmetric key called the column master key (CMK). The CMK is not stored in the database but somewhere where the client can get to it, for example in a file or in a key management system. When a server sends rows containing encrypted column values to the client, it first sends the required CMK and CEK information (new protocol messages), which the client needs to record. Then, the client can use this information to automatically decrypt the incoming row data and forward it in plaintext to the application. For the CMKs, libpq has a new connection parameter "cmklookup" that specifies via a mini-language where to get the keys. Right now, you can use "file" to read it from a file, or "run" to run some program, which could get it from a KMS. The general idea would be for an application to have one CMK per area of secret stuff, for example, for credit card data. The CMK can be rotated: each CEK can be represented multiple times in the database, encrypted by a different CMK. (The CEK can't be rotated easily, since that would require reading out all the data from a table/column and reencrypting it. We could/should add some custom tooling for that, but it wouldn't be a routine operation.) Several encryption algorithms are provided. The CMK process uses RSAES_OAEP_SHA_1 or _256. The CEK process uses AEAD_AES_*_CBC_HMAC_SHA_* with several strengths. In the server, the encrypted datums are stored in types called pg_encrypted_rnd and pg_encrypted_det (for randomized and deterministic encryption). These are essentially cousins of bytea. For the rest of the database system below the protocol handling, there is nothing special about those. For example, pg_encrypted_rnd has no operators at all, pg_encrypted_det has only an equality operator. pg_attribute has a new column attrealtypid that stores the original type of the data in the column. This is only used for providing it to clients, so that higher-level clients can convert the decrypted value to their appropriate data types in their environments. The protocol extensions are guarded by a new protocol extension option "_pq_.column_encryption". If this is not set, nothing changes, the protocol stays the same, and no encryption or decryption happens. To get transparently encrypted data into the database (as opposed to reading it out), it is required to use protocol-level prepared statements (i.e., extended query). The client must first prepare a statement, then describe the statement to get parameter metadata, which indicates which parameters are to be encrypted and how. libpq's PQexecParams() does this internally. For the asynchronous interfaces, additional libpq functions are added to be able to pass the describe result back into the statement execution function. (Other client APIs that have a "statement handle" concept could do this more elegantly and probably without any API changes.) psql also supports this transparently if the \bind command is used. Another challenge is that the parse analysis must check which underlying column a parameter corresponds to. This is similar to resorigtbl and resorigcol in the opposite direction. This functionality is in principle available to all prepared-statement variants, not only protocol-level. I expanded the pg_prepared_statements view to show this information as well, which also provides an easy way to test and debug this functionality independent of column encryption. Discussion: https://www.postgresql.org/message-id/flat/89157929-c2b6-817b-6025-8e4b2d89d88f%40enterprisedb.com --- doc/src/sgml/acronyms.sgml | 18 + doc/src/sgml/catalogs.sgml | 275 ++++++ doc/src/sgml/charset.sgml | 9 + doc/src/sgml/datatype.sgml | 53 ++ doc/src/sgml/ddl.sgml | 372 ++++++++ doc/src/sgml/glossary.sgml | 23 + doc/src/sgml/libpq.sgml | 314 +++++++ doc/src/sgml/protocol.sgml | 442 +++++++++ doc/src/sgml/ref/allfiles.sgml | 6 + .../sgml/ref/alter_column_encryption_key.sgml | 186 ++++ doc/src/sgml/ref/alter_column_master_key.sgml | 124 +++ doc/src/sgml/ref/copy.sgml | 9 + .../ref/create_column_encryption_key.sgml | 168 ++++ .../sgml/ref/create_column_master_key.sgml | 106 +++ doc/src/sgml/ref/create_table.sgml | 42 +- .../sgml/ref/drop_column_encryption_key.sgml | 112 +++ doc/src/sgml/ref/drop_column_master_key.sgml | 112 +++ doc/src/sgml/ref/pg_dump.sgml | 31 + doc/src/sgml/ref/pg_dumpall.sgml | 27 + doc/src/sgml/ref/psql-ref.sgml | 39 + doc/src/sgml/reference.sgml | 6 + src/backend/access/common/printsimple.c | 7 + src/backend/access/common/printtup.c | 221 ++++- src/backend/access/common/tupdesc.c | 12 + src/backend/access/hash/hashvalidate.c | 2 +- src/backend/catalog/Makefile | 3 +- src/backend/catalog/aclchk.c | 12 + src/backend/catalog/dependency.c | 18 + src/backend/catalog/heap.c | 18 + src/backend/catalog/objectaddress.c | 213 +++++ src/backend/commands/Makefile | 1 + src/backend/commands/alter.c | 15 + src/backend/commands/colenccmds.c | 426 +++++++++ src/backend/commands/dropcmds.c | 9 + src/backend/commands/event_trigger.c | 12 + src/backend/commands/meson.build | 1 + src/backend/commands/prepare.c | 74 +- src/backend/commands/seclabel.c | 3 + src/backend/commands/tablecmds.c | 91 ++ src/backend/commands/variable.c | 7 +- src/backend/executor/spi.c | 4 + src/backend/nodes/nodeFuncs.c | 2 + src/backend/parser/analyze.c | 3 +- src/backend/parser/gram.y | 148 +++- src/backend/parser/parse_param.c | 35 +- src/backend/parser/parse_target.c | 6 + src/backend/postmaster/postmaster.c | 19 +- src/backend/tcop/postgres.c | 57 +- src/backend/tcop/utility.c | 53 ++ src/backend/utils/adt/arrayfuncs.c | 1 + src/backend/utils/adt/varlena.c | 106 +++ src/backend/utils/cache/lsyscache.c | 111 +++ src/backend/utils/cache/plancache.c | 31 +- src/backend/utils/cache/syscache.c | 58 ++ src/backend/utils/mb/mbutils.c | 18 +- src/bin/pg_dump/common.c | 6 + src/bin/pg_dump/pg_backup.h | 1 + src/bin/pg_dump/pg_backup_archiver.c | 2 + src/bin/pg_dump/pg_backup_db.c | 9 +- src/bin/pg_dump/pg_dump.c | 326 ++++++- src/bin/pg_dump/pg_dump.h | 31 + src/bin/pg_dump/pg_dump_sort.c | 14 + src/bin/pg_dump/pg_dumpall.c | 5 + src/bin/pg_dump/t/002_pg_dump.pl | 48 + src/bin/psql/command.c | 6 +- src/bin/psql/describe.c | 157 +++- src/bin/psql/describe.h | 6 + src/bin/psql/help.c | 4 + src/bin/psql/settings.h | 1 + src/bin/psql/startup.c | 10 + src/bin/psql/tab-complete.c | 51 +- src/common/Makefile | 1 + src/common/colenc.c | 104 +++ src/common/meson.build | 1 + src/include/access/printtup.h | 2 + src/include/catalog/dependency.h | 3 + src/include/catalog/meson.build | 3 + src/include/catalog/pg_amop.dat | 5 + src/include/catalog/pg_amproc.dat | 5 + src/include/catalog/pg_attribute.h | 9 + src/include/catalog/pg_colenckey.h | 40 + src/include/catalog/pg_colenckeydata.h | 46 + src/include/catalog/pg_colmasterkey.h | 45 + src/include/catalog/pg_opclass.dat | 2 + src/include/catalog/pg_operator.dat | 10 + src/include/catalog/pg_opfamily.dat | 2 + src/include/catalog/pg_proc.dat | 39 +- src/include/catalog/pg_type.dat | 12 + src/include/catalog/pg_type.h | 1 + src/include/commands/colenccmds.h | 26 + src/include/common/colenc.h | 51 ++ src/include/libpq/libpq-be.h | 1 + src/include/nodes/parsenodes.h | 29 + src/include/parser/analyze.h | 4 +- src/include/parser/kwlist.h | 2 + src/include/parser/parse_node.h | 2 + src/include/parser/parse_param.h | 3 +- src/include/tcop/cmdtaglist.h | 6 + src/include/tcop/tcopprot.h | 2 + src/include/utils/lsyscache.h | 6 + src/include/utils/plancache.h | 6 + src/include/utils/syscache.h | 6 + src/interfaces/libpq/Makefile | 1 + src/interfaces/libpq/exports.txt | 4 + src/interfaces/libpq/fe-connect.c | 25 + src/interfaces/libpq/fe-encrypt-openssl.c | 836 ++++++++++++++++++ src/interfaces/libpq/fe-encrypt.h | 33 + src/interfaces/libpq/fe-exec.c | 655 +++++++++++++- src/interfaces/libpq/fe-protocol3.c | 139 ++- src/interfaces/libpq/fe-trace.c | 55 +- src/interfaces/libpq/libpq-fe.h | 20 + src/interfaces/libpq/libpq-int.h | 36 + src/interfaces/libpq/meson.build | 1 + src/interfaces/libpq/nls.mk | 2 +- src/interfaces/libpq/test/.gitignore | 1 + src/interfaces/libpq/test/Makefile | 7 + src/interfaces/libpq/test/meson.build | 2 + src/test/Makefile | 4 +- src/test/column_encryption/.gitignore | 3 + src/test/column_encryption/Makefile | 31 + src/test/column_encryption/meson.build | 23 + .../t/001_column_encryption.pl | 238 +++++ .../column_encryption/t/002_cmk_rotation.pl | 112 +++ src/test/column_encryption/test_client.c | 161 ++++ .../column_encryption/test_run_decrypt.pl | 58 ++ src/test/meson.build | 1 + .../regress/expected/column_encryption.out | 164 ++++ src/test/regress/expected/object_address.out | 45 +- src/test/regress/expected/oidjoins.out | 6 + src/test/regress/expected/opr_sanity.out | 12 +- src/test/regress/expected/prepare.out | 38 +- src/test/regress/expected/rules.out | 4 +- src/test/regress/expected/type_sanity.out | 6 +- src/test/regress/parallel_schedule | 2 +- src/test/regress/pg_regress_main.c | 2 +- src/test/regress/sql/column_encryption.sql | 144 +++ src/test/regress/sql/object_address.sql | 17 +- src/test/regress/sql/prepare.sql | 2 +- src/test/regress/sql/type_sanity.sql | 2 + 139 files changed, 8182 insertions(+), 132 deletions(-) create mode 100644 doc/src/sgml/ref/alter_column_encryption_key.sgml create mode 100644 doc/src/sgml/ref/alter_column_master_key.sgml create mode 100644 doc/src/sgml/ref/create_column_encryption_key.sgml create mode 100644 doc/src/sgml/ref/create_column_master_key.sgml create mode 100644 doc/src/sgml/ref/drop_column_encryption_key.sgml create mode 100644 doc/src/sgml/ref/drop_column_master_key.sgml create mode 100644 src/backend/commands/colenccmds.c create mode 100644 src/common/colenc.c create mode 100644 src/include/catalog/pg_colenckey.h create mode 100644 src/include/catalog/pg_colenckeydata.h create mode 100644 src/include/catalog/pg_colmasterkey.h create mode 100644 src/include/commands/colenccmds.h create mode 100644 src/include/common/colenc.h create mode 100644 src/interfaces/libpq/fe-encrypt-openssl.c create mode 100644 src/interfaces/libpq/fe-encrypt.h create mode 100644 src/test/column_encryption/.gitignore create mode 100644 src/test/column_encryption/Makefile create mode 100644 src/test/column_encryption/meson.build create mode 100644 src/test/column_encryption/t/001_column_encryption.pl create mode 100644 src/test/column_encryption/t/002_cmk_rotation.pl create mode 100644 src/test/column_encryption/test_client.c create mode 100755 src/test/column_encryption/test_run_decrypt.pl create mode 100644 src/test/regress/expected/column_encryption.out create mode 100644 src/test/regress/sql/column_encryption.sql diff --git a/doc/src/sgml/acronyms.sgml b/doc/src/sgml/acronyms.sgml index 2df6559acc..bd1a0185ed 100644 --- a/doc/src/sgml/acronyms.sgml +++ b/doc/src/sgml/acronyms.sgml @@ -56,6 +56,15 @@ Acronyms + + CEK + + + Column Encryption Key + + + + CIDR @@ -67,6 +76,15 @@ Acronyms + + CMK + + + Column Master Key + + + + CPAN diff --git a/doc/src/sgml/catalogs.sgml b/doc/src/sgml/catalogs.sgml index 9316b811ac..b2b294702c 100644 --- a/doc/src/sgml/catalogs.sgml +++ b/doc/src/sgml/catalogs.sgml @@ -105,6 +105,21 @@ System Catalogs collations (locale information) + + pg_colenckey + column encryption keys + + + + pg_colenckeydata + column encryption key data + + + + pg_colmasterkey + column master keys + + pg_constraint check constraints, unique constraints, primary key constraints, foreign key constraints @@ -1360,6 +1375,40 @@ <structname>pg_attribute</structname> Columns + + + attcek oid + (references pg_colenckey.oid) + + + If the column is encrypted, a reference to the column encryption key, else 0. + + + + + + attrealtypid oid + (references pg_type.oid) + + + If the column is encrypted, then this column indicates the type of the + encrypted data that is reported to the client. For encrypted columns, + the field atttypid is either + pg_encrypted_det or pg_encrypted_rnd. If the + column is not encrypted, then 0. + + + + + + attencalg int4 + + + If the column is encrypted, the identifier of the encryption algorithm; + see for possible values. + + + attinhcount int4 @@ -2467,6 +2516,232 @@ <structname>pg_collation</structname> Columns + + <structname>pg_colenckey</structname> + + + pg_colenckey + + + + The catalog pg_colenckey contains information + about the column encryption keys in the database. The actual key material + of the column encryption keys is in the catalog pg_colenckeydata. + + + + <structname>pg_colenckey</structname> Columns + + + + + Column Type + + + Description + + + + + + + + oid oid + + + Row identifier + + + + + + cekname name + + + Column encryption key name + + + + + + cekowner oid + (references pg_authid.oid) + + + Owner of the column encryption key + + + + +
+ + + + <structname>pg_colenckeydata</structname> + + + pg_colenckeydata + + + + The catalog pg_colenckeydata contains the key + material of column encryption keys. Each column encryption key object can + contain several versions of the key material, each encrypted with a + different column master key. That allows the gradual rotation of the + column master keys. Thus, (ckdcekid, ckdcmkid) is a + unique key of this table. + + + + The key material of column encryption keys should never be decrypted inside + the database instance. It is meant to be sent as-is to the client, where + it is decrypted using the associated column master key, and then used to + encrypt or decrypt column values. + + + + <structname>pg_colenckeydata</structname> Columns + + + + + Column Type + + + Description + + + + + + + + oid oid + + + Row identifier + + + + + + ckdcekid oid + (references pg_colenckey.oid) + + + The column encryption key this entry belongs to + + + + + + ckdcmkid oid + (references pg_colmasterkey.oid) + + + The column master key that the key material is encrypted with + + + + + + ckdcmkalg int4 + + + The encryption algorithm used for encrypting the key material; see + for possible values. + + + + + + ckdencval bytea + + + The key material of this column encryption key, encrypted using the + referenced column master key + + + + +
+ + + + <structname>pg_colmasterkey</structname> + + + pg_colmasterkey + + + + The catalog pg_colmasterkey contains information + about column master keys. The keys themselves are not stored in the + database. The catalog entry only contains information that is used by + clients to locate the keys, for example in a file or in a key management + system. + + + + <structname>pg_colmasterkey</structname> Columns + + + + + Column Type + + + Description + + + + + + + + oid oid + + + Row identifier + + + + + + cmkname name + + + Column master key name + + + + + + cmkowner oid + (references pg_authid.oid) + + + Owner of the column master key + + + + + + cmkrealm text + + + A realm associated with this column master key. This is + a freely chosen string that is used by clients to determine how to look + up the key. A typical configuration would put all CMKs that are looked + up in the same way into the same realm. + + + + +
+ + <structname>pg_constraint</structname> diff --git a/doc/src/sgml/charset.sgml b/doc/src/sgml/charset.sgml index 445fd175d8..ce13af221a 100644 --- a/doc/src/sgml/charset.sgml +++ b/doc/src/sgml/charset.sgml @@ -1721,6 +1721,15 @@ Automatic Character Set Conversion Between Server and Client Just as for the server, use of SQL_ASCII is unwise unless you are working with all-ASCII data. + + + When transparent column encryption is used, then no encoding conversion + is possible. (The encoding conversion happens on the server, and the + server cannot look inside any encrypted column values.) If column + encryption is enabled for a session, then the server enforces that the + client encoding matches the server encoding, and any attempts to change + the client encoding will be rejected by the server. + diff --git a/doc/src/sgml/datatype.sgml b/doc/src/sgml/datatype.sgml index fdffba4442..985390f14c 100644 --- a/doc/src/sgml/datatype.sgml +++ b/doc/src/sgml/datatype.sgml @@ -5360,4 +5360,57 @@ Pseudo-Types + + Types Related to Encryption + + + An encrypted column value (see ) is + internally stored using the types + pg_encrypted_rnd (for randomized encryption) or + pg_encrypted_det (for deterministic encryption); see . Most of the database system treats + this as normal types. For example, the type pg_encrypted_det has + an equals operator that allows lookup of encrypted values. + + + + The external representation of these types is the string + encrypted$ followed by hexadecimal byte values, for + example + encrypted$3aacd063d2d3a1a04119df76874e0b9785ea466177f18fe9c0a1a313eaf09c98. + Clients that don't support transparent column encryption or have disabled + it will see the encrypted values in this format. Clients that support + transparent data encryption will not see these types in result sets, as + the protocol layer will translate them back to declared underlying type in + the table definition. + + + + Types Related to Encryption + + + + + + + Name + Storage Size + Description + + + + + pg_encrypted_det + 1 or 4 bytes plus the actual binary string + encrypted column value, deterministic encryption + + + pg_encrypted_rnd + 1 or 4 bytes plus the actual binary string + encrypted column value, randomized encryption + + + +
+ diff --git a/doc/src/sgml/ddl.sgml b/doc/src/sgml/ddl.sgml index 6e92bbddd2..eb35e9c09c 100644 --- a/doc/src/sgml/ddl.sgml +++ b/doc/src/sgml/ddl.sgml @@ -1211,6 +1211,378 @@ Exclusion Constraints + + Transparent Column Encryption + + + With transparent column encryption, columns can be + stored encrypted in the database. The encryption and decryption happens on + the client, so that the plaintext value is never seen in the database + instance or on the server hosting the database. The drawback is that most + operations, such as function calls or sorting, are not possible on + encrypted values. + + + + Using Transparent Column Encryption + + + Tranparent column encryption uses two levels of cryptographic keys. The + actual column value is encrypted using a symmetric algorithm, such as AES, + using a column encryption key + (CEK). The column encryption key is in turn encrypted + using an asymmetric algorithm, such as RSA, using a column + master key (CMK). The encrypted CEK is + stored in the database system. The CMK is not stored in the database + system; it is stored on the client or somewhere where the client can access + it, such as in a local file or in a key management system. The database + system only records where the CMK is stored and provides this information + to the client. When rows containing encrypted columns are sent to the + client, the server first sends any necessary CMK information, followed by + any required CEK. The client then looks up the CMK and uses that to + decrypt the CEK. Then it decrypts incoming row data using the CEK and + provides the decrypted row data to the application. + + + + Here is an example declaring a column as encrypted: + +CREATE TABLE customers ( + id int PRIMARY KEY, + name text NOT NULL, + ... + creditcard_num text ENCRYPTED WITH (column_encryption_key = cek1) +); + + + + + Column encryption supports randomized + (also known as probabilistic) and + deterministic encryption. The above example uses + randomized encryption, which is the default. Randomized encryption uses a + random initialization vector for each encryption, so that even if the + plaintext of two rows is equal, the encrypted values will be different. + This prevents someone with direct access to the database server to make + computations such as distinct counts on the encrypted values. + Deterministic encryption uses a fixed initialization vector. This reduces + security, but it allows equality searches on encrypted values. The + following example declares a column with deterministic encryption: + +CREATE TABLE employees ( + id int PRIMARY KEY, + name text NOT NULL, + ... + ssn text ENCRYPTED WITH ( + column_encryption_key = cek1, encryption_type = deterministic) +); + + + + + Null values are not encrypted by transparent column encryption; null values + sent by the client are visible as null values in the database. If the fact + that a value is null needs to be hidden from the server, this information + needs to be encoded into a nonnull value in the client somehow. + + + + + Reading and Writing Encrypted Columns + + + Reading and writing encrypted columns is meant to be handled automatically + by the client library/driver and should be mostly transparent to the + application code, if certain prerequisites are fulfilled: + + + + + The client library needs to support transparent column encryption. Not + all client libraries do. Furthermore, the client library might require + that transparent column encryption is explicitly enabled at connection + time. See the documentation of the client library for details. + + + + + + Column master keys and column encryption keys have been set up, and the + client library has been configured to be able to look up column master + keys from the key store or key management system. + + + + + + + Reading from encrypted columns will then work automatically. For example, + using the above example, + +SELECT ssn FROM employees WHERE id = 5; + + will return the unencrypted value for the ssn column in + any rows found. + + + + Writing to encrypted columns requires that the extended query protocol + (protocol-level prepared statements) be used, so that the values to be + encrypted are supplied separately from the SQL command. For example, + using, say, psql or libpq, the following would not work: + +-- WRONG! +INSERT INTO ssn (id, name, ssn) VALUES (1, 'Someone', '12345'); + + This will leak the unencrypted value 12345 to the + server, thus defeating the point of column encryption. + Note that using server-side prepared statements using the SQL commands + PREPARE and EXECUTE is equally + incorrect, since that would also leak the parameters provided to + EXECUTE to the server. + + + + This shows a correct invocation in libpq (without error checking): + +PGresult *res; +const char *values[] = {"1", "Someone", "12345"}; + +res = PQexecParams(conn, "INSERT INTO ssn (id, name, ssn) VALUES ($1, $2, $3)", 3, NULL, values, NULL, NULL, 0); + +/* print result in res */ + + Higher-level client libraries might use the protocol-level prepared + statements automatically and thus won't require any code changes. + + + + psql provides the command + \bind to run statements with parameters like this: + +INSERT INTO ssn (id, name, ssn) VALUES ($1, $2, $3) \bind '1' 'Someone', '12345' \g + + + + + + Setting up Transparent Column Encryption + + + The steps to set up transparent column encryption for a database are: + + + + + Create the key material for the CMK, for example, using a cryptographic + library or toolkit, or a key management system. Secure access to the + key as appropriate, using access control, passwords, etc. + + + + + + Register the CMK in the database using the SQL command . + + + + + + Create the (unencrypted) key material for the CEK in a temporary + location. (It will be encrypted in the next step. Depending on the + available tools, it might be possible and sensible to combine these two + steps.) + + + + + + Encrypt the created CEK key material using the CMK (created earlier). + (The unencrypted version of the CEK key material can now be disposed + of.) + + + + + + Register the CEK in the database using the SQL command . This command + uploads the encrypted CEK key material created in the + previous step to the database server. The local copy of the CEK key + material can then be removed. + + + + + + Create encrypted columns using the created CEK. + + + + + + Configure the client library/driver to be able to look up the CMK + created earlier. + + + + + Once this is done, values can be written to and read from the encrypted + columns in a transparent way. + + + + Note that these steps should not be run on the database server, but on some + client machine. Neither the CMK nor the unencrypted CEK should ever appear + on the database server host. + + + + The specific details of this setup depend on the desired CMK storage + mechanism/key management system as well as the client libraries to be used. + The following example uses the openssl command-line tool + to set up the keys. + + + + + Create the key material for the CMK and write it to a file: + +openssl genpkey -algorithm rsa -out cmk1.pem + + + + + + + Register the CMK in the database: + +psql ... -c "CREATE COLUMN MASTER KEY cmk1" + + + + + + + Create the unencrypted CEK key material in a file: + +openssl rand -out cek1.bin 48 + + (See for required key lengths.) + + + + + + Encrypt the created CEK key material: + +openssl pkeyutl -encrypt -inkey cmk1.pem -pkeyopt rsa_padding_mode:oaep -in cek1.bin -out cek1.bin.enc +rm cek1.bin + + + + + + + Register the CEK in the database: + +# convert file contents to hex encoding; this is just one possible way +cekenchex=$(perl -0ne 'print unpack "H*"' cek1.bin.enc) +psql ... -c "CREATE COLUMN ENCRYPTION KEY cek1 WITH VALUES (column_master_key = cmk1, encrypted_value = '\\x${cekenchex}')" +rm cek1.bin.enc + + + + + + + Create encrypted columns as shown in the examples above. + + + + + + Configure the libpq for CMK lookup (see also ): + +PGCMKLOOKUP="*=file:$PWD/%k.pem" +export PGCMKLOOKUP + + + + + Additionally, libpq requires that the connection parameter be set in order to activate + the transparent column encryption functionality. This should be done in + the connection parameters of the application, but an environment + variable (PGCOLUMNENCRYPTION) is also available. + + + + + + + + Guidance on Using Transparent Column Encryption + + + This section contains some information on when it is or is not appropriate + to use transparent column encryption, and what precautions need to be + taken to maintain its security. + + + + In general, column encryption is never a replacement for additional + security and encryption techniques such as transmission encryption + (SSL/TLS), storage encryption, strong access control, and password + security. Column encryption only targets specific use cases and should be + used in conjunction with additional security measures. + + + + A typical use case for column encryption is to encrypt specific values + with additional security requirements, for example credit card numbers. + This would allow you to store that security-sensitive data together with + the rest of your data (thus getting various benefits, such as referential + integrity, consistent backups), while giving access to that data only to + specific clients and preventing accidental leakage on the server side + (server logs, file system backups, etc.). + + + + Column encryption cannot hide the existence or absence of data, it can + only disguise the particular data that is known to exist. For example, + storing a cleartext person name and an encrypted credit card number + indicates that the person has a credit card. That might not reveal too + much if the database is for an online store and there is other data nearby + that shows that the person has recently made purchases. But in another + example, storing a cleartext person name and an encrypted diagnosis in a + medical database probably indicates that the person has a medical issue. + Depending on the circumstances, that might not by itself be sufficient + security. + + + + Encryption cannot completely hide the length of values. The encryption + methods will pad values to multiples of the underlying cipher's block size + (usually 16 bytes), so some length differences will be unified this way. + There is no concern if all values are of the same length (e.g., credit + card numbers). But if there are signficant length differences between + valid values and that length information is security-sensitive, then + application-specific workarounds such as padding would need to be applied. + How to do that securely is beyond the scope of this manual. + + + + + Storing data such credit card data, medical data, and so on is usually + subject to government or industry regulations. This section is not meant + to provide complete instructions on how to do this correctly. Please + seek additional advice when engaging in such projects. + + + + + System Columns diff --git a/doc/src/sgml/glossary.sgml b/doc/src/sgml/glossary.sgml index 7c01a541fe..a9eb49b15f 100644 --- a/doc/src/sgml/glossary.sgml +++ b/doc/src/sgml/glossary.sgml @@ -389,6 +389,29 @@ Glossary + + Column encryption key + + + A cryptographic key used to encrypt column values when using transparent + column encryption. Column encryption keys are stored in the database + encrypted by another key, the column master key. + + + + + + Column master key + + + A cryptographic key used to encrypt column encryption keys. (So the + column master key is a key encryption key.) + Column master keys are stored outside the database system, for example in + a key management system. + + + + Commit diff --git a/doc/src/sgml/libpq.sgml b/doc/src/sgml/libpq.sgml index af278660eb..a2d413bafd 100644 --- a/doc/src/sgml/libpq.sgml +++ b/doc/src/sgml/libpq.sgml @@ -1964,6 +1964,140 @@ Parameter Key Words + + + column_encryption + + + If set to 1, this enables transparent column encryption for the + connection. If encrypted columns are queried and this is not enabled, + the encrypted value is returned. See for more information about this + feature. + + + + + + cmklookup + + + This specifies how libpq should look up column master keys (CMKs) in + order to decrypt the column encryption keys (CEKs). + The value is a list of key=value entries separated + by semicolons. Each key is the name of a key realm, or + * to match all realms. The value is a + scheme:data specification. The scheme specifies + the method to look up the key, the remaining data is specific to the + scheme. Placeholders are replaced in the remaining data as follows: + + + + %a + + + The CMK algorithm name (see ) + + + + + + %j + + + The CMK algorithm name in JSON Web Algorithms format (see ). This is useful for interfacing + with some key management systems that use these names. + + + + + + %k + + + The CMK key name + + + + + + %p + + + The name of a temporary file with the encrypted CEK data (only for + the run scheme) + + + + + + %r + + + The realm name + + + + + + + + Available schemes are: + + + file + + + Load the key material from a file. The remaining data is the file + name. Use this if the CMKs are kept in a file on the file system. + + + + The file scheme does not support the CMK algorithm + unspecified. + + + + + + run + + + Run the specified command to decrypt the CEK. The remaining data + is a shell command. Use this with key management systems that + perform the decryption themselves. The command must print the + decrypted plaintext on the standard output. + + + + + + + + The default value is empty. + + + + Example: + +cmklookup="r1=file:/some/where/secrets/%k.pem;*=file:/else/where/%r/%k.pem" + + This specification says, for keys in realm r1, load + them from the specified file, replacing %k by the + key name. For keys in other realms, load them from the file, + replacing realm and key names as specified. + + + + An example for interacting with a (hypothetical) key management + system: + +cmklookup="*=run:acmekms decrypt --key %k --alg %a --infile '%p'" + + + + @@ -2864,6 +2998,25 @@ Main Functions src/backend/utils/adt/numeric.c::numeric_send() and src/backend/utils/adt/numeric.c::numeric_recv(). + + + When column encryption is enabled, the second-least-significant + byte of this parameter specifies whether encryption should be + forced for a parameter. Set this byte to one to force encryption. + For example, use the C code literal 0x10 to + specify text format with forced encryption. If the array pointer + is null then encryption is not forced for any parameter. + + + + If encryption is forced for a parameter but the parameter does not + correspond to an encrypted column on the server, then the call + will fail and the parameter will not be sent. This can be used + for additional security against a comprimised server. (The + drawback is that application code then needs to be kept up to date + with knowledge about which columns are encrypted rather than + letting the server specify this.) + @@ -2876,6 +3029,13 @@ Main Functions to obtain different result columns in different formats, although that is possible in the underlying protocol.) + + + If column encryption is used, then encrypted columns will be + returned in text format independent of this setting. Applications + can check the format of each result column with before accessing it. + @@ -3028,6 +3188,44 @@ Main Functions + + PQexecPreparedDescribedPQexecPreparedDescribed + + + + Sends a request to execute a prepared statement with given + parameters, and waits for the result, with support for encrypted columns. + +PGresult *PQexecPreparedDescribed(PGconn *conn, + const char *stmtName, + int nParams, + const char * const *paramValues, + const int *paramLengths, + const int *paramFormats, + int resultFormat, + PGresult *paramDesc); + + + + + is like with additional support for encrypted + columns. The parameter paramDesc must be a + result set obtained from on + the same prepared statement. + + + + This function must be used if a statement parameter corresponds to an + underlying encrypted column. In that situation, the prepared + statement needs to be described first so that libpq can obtain the + necessary key and other information from the server. When that is + done, the parameters corresponding to encrypted columns are + automatically encrypted appropriately before being sent to the server. + + + + PQdescribePreparedPQdescribePrepared @@ -3878,6 +4076,28 @@ Retrieving Query Result Information + + PQfisencryptedPQfisencrypted + + + + Returns whether the value for the given column came from an encrypted + column. Column numbers start at 0. + +int PQfisencrypted(const PGresult *res, + int column_number); + + + + + Encrypted column values are automatically decrypted, so this function + is not necessary to access the column value. It can be used for extra + security to check whether the value was stored encrypted when one + thought it should be. + + + + PQfsizePQfsize @@ -4059,6 +4279,31 @@ Retrieving Query Result Information + + PQparamisencryptedPQparamisencrypted + + + + Returns whether the value for the given parameter is destined for an + encrypted column. Parameter numbers start at 0. + +int PQparamisencrypted(const PGresult *res, int param_number); + + + + + Values for parameters destined for encrypted columns are automatically + encrypted, so this function is not necessary to prepare the parameter + value. It can be used for extra security to check whether the value + will be stored encrypted when one thought it should be. (But see also + at for another way to do that.) + This function is only useful when inspecting the result of . For other types of results it + will return false. + + + + PQprintPQprint @@ -4584,6 +4829,7 @@ Asynchronous Command Processing , , , + , , and , which can be used with to duplicate @@ -4591,6 +4837,7 @@ Asynchronous Command Processing , , , + , , and respectively. @@ -4647,6 +4894,13 @@ Asynchronous Command Processing , it allows only one command in the query string. + + + If column encryption is enabled, then this function is not + asynchronous. To get asynchronous behavior, followed by should be called individually. + @@ -4701,6 +4955,45 @@ Asynchronous Command Processing + + PQsendQueryPreparedDescribedPQsendQueryPreparedDescribed + + + + Sends a request to execute a prepared statement with given + parameters, without waiting for the result(s), with support for encrypted columns. + +int PQsendQueryPreparedDescribed(PGconn *conn, + const char *stmtName, + int nParams, + const char * const *paramValues, + const int *paramLengths, + const int *paramFormats, + int resultFormat, + PGresult *paramDesc); + + + + + is like with additional support for encrypted + columns. The parameter paramDesc must be a + result set obtained from on + the same prepared statement. + + + + This function must be used if a statement parameter corresponds to an + underlying encrypted column. In that situation, the prepared + statement needs to be described first so that libpq can obtain the + necessary key and other information from the server. When that is + done, the parameters corresponding to encrypted columns are + automatically encrypted appropriately before being sent to the server. + See also under . + + + + PQsendDescribePreparedPQsendDescribePrepared @@ -4751,6 +5044,7 @@ Asynchronous Command Processing , , , + , , , or @@ -7784,6 +8078,26 @@ Environment Variables + + + + PGCMKLOOKUP + + PGCMKLOOKUP behaves the same as the connection parameter. + + + + + + + PGCOLUMNENCRYPTION + + PGCOLUMNENCRYPTION behaves the same as the connection parameter. + + + diff --git a/doc/src/sgml/protocol.sgml b/doc/src/sgml/protocol.sgml index 03312e07e2..1a9b8abd7f 100644 --- a/doc/src/sgml/protocol.sgml +++ b/doc/src/sgml/protocol.sgml @@ -1109,6 +1109,75 @@ Pipelining + + Transparent Column Encryption + + + Transparent column encryption is enabled by sending the parameter + _pq_.column_encryption with a value of + 1 in the StartupMessage. This is a protocol extension + that enables a few additional protocol messages and adds additional fields + to existing protocol messages. Client drivers should only activate this + protocol extension when requested by the user, for example through a + connection parameter. + + + + When transparent column encryption is enabled, the messages + ColumnMasterKey and ColumnEncryptionKey can appear before RowDescription + and ParameterDescription messages. Clients should collect the information + in these messages and keep them for the duration of the connection. A + server is not required to resend the key information for each statement + cycle if it was already sent during this connection. If a server resends + a key that the client has already stored (that is, a key having an ID + equal to one already stored), the new information should replace the old. + (This could happen, for example, if the key was altered by server-side DDL + commands.) + + + + A client supporting transparent column encryption should automatically + decrypt the column value fields of DataRow messages corresponding to + encrypted columns, and it should automatically encrypt the parameter value + fields of Bind messages corresponding to encrypted columns. + + + + When column encryption is used, format specifications (text/binary) in the + various protocol messages apply to the ciphertext. The plaintext inside + the ciphertext is always in text format, but this is invisible to the + protocol. Even though the ciphertext could in theory be sent in either + text or binary format, the server will always send it in binary if the + column encryption protocol option is enabled. That way, a client library + only needs to support decrypting data sent in binary and does not have to + support decoding the text format of the encryption-related types (see + ). + + + + When deterministic encryption is used, clients need to take care to + represent plaintext to be encrypted in a consistent form. For example, + encrypting an integer represented by the string 100 and + an integer represented by the string +100 would result + in two different ciphertexts, thus defeating the main point of + deterministic encryption. This protocol specification requires the + plaintext to be in canonical form, which is the form that + is produced by the server when it outputs a particular value in text + format. + + + + When transparent column encryption is enabled, the client encoding must + match the server encoding. This ensures that all values encrypted or + decrypted by the client match the server encoding. + + + + The cryptographic operations used for transparent column encryption are + described in . + + + Function Call @@ -4056,6 +4125,140 @@ Message Formats + + ColumnEncryptionKey (B) + + + This message can only appear if the protocol extension + _pq_.column_encryption is enabled. (See .) + + + + + Byte1('Y') + + + Identifies the message as a column encryption key message. + + + + + + Int32 + + + Length of message contents in bytes, including self. + + + + + + Int32 + + + The session-specific identifier of the key. + + + + + + Int32 + + + The identifier of the master key used to encrypt this key. + + + + + + Int32 + + + The identifier of the algorithm used to encrypt this key. + + + + + + Int32 + + + The length of the following key material. + + + + + + Byten + + + The key material, encrypted with the master key referenced above. + + + + + + + + + ColumnMasterKey (B) + + + This message can only appear if the protocol extension + _pq_.column_encryption is enabled. (See .) + + + + + Byte1('y') + + + Identifies the message as a column master key message. + + + + + + Int32 + + + Length of message contents in bytes, including self. + + + + + + Int32 + + + The session-specific identifier of the key. + + + + + + String + + + The name of the key. + + + + + + String + + + The key's realm. + + + + + + + CommandComplete (B) @@ -5152,6 +5355,46 @@ Message Formats + + + If the protocol extension _pq_.column_encryption is + enabled (see ), then there is + also the following for each parameter: + + + + + Int32 + + + If this parameter is to be encrypted, this specifies the + identifier of the column encryption key to use, else zero. + + + + + + Int32 + + + If this parameter is to be encrypted, this specifies the + identifier of the encryption algorithm, else zero. + + + + + + Int16 + + + This is used as a bit field of flags. If the column is + encrypted and bit 0x01 is set, the column uses deterministic + encryption, otherwise randomized encryption. + + + + @@ -5540,6 +5783,35 @@ Message Formats + + + If the protocol extension _pq_.column_encryption is + enabled (see ), then there is + also the following for each field: + + + + + Int32 + + + If the field is encrypted, this specifies the identifier of the + column encryption key to use, else zero. + + + + + + Int32 + + + If the field is encrypted, this specifies the identifier of the + encrypt algorithm, else zero. + + + + @@ -7343,6 +7615,176 @@ Logical Replication Message Formats + + Transparent Column Encryption Cryptography + + + This section describes the cryptographic operations used by transparent + column encryption. A client that supports transparent column encryption + needs to implement these operations as specified here in order to be able + to interoperate with other clients. + + + + Column encryption key algorithms and column master key algorithms are + identified by integers in the protocol messages and the system catalogs. + Additional algorithms may be added to this protocol specification without a + change in the protocol version number. Clients should implement support + for all the algorithms specified here. If a client encounters an algorithm + identifier it does not recognize or does not support, it must raise an + error. A suitable error message should be provided to the application or + user. + + + + Column Master Keys + + + The currently defined algorithms for column master keys are listed in + . + + + + + + Column Master Key Algorithms + + + + PostgreSQL ID + Name + JWA (RFC 7518) name + Description + + + + + 1 + unspecified + (none) + interpreted by client + + + 2 + RSAES_OAEP_SHA_1 + RSA-OAEP + RSAES OAEP using default parameters (RFC 8017/PKCS #1) + + + 3 + RSAES_OAEP_SHA_256 + RSA-OAEP-256 + RSAES OAEP using SHA-256 and MGF1 with SHA-256 (RFC + 8017/PKCS #1) + + + +
+ + + + Column Encryption Keys + + + The currently defined algorithms for column encryption keys are listed in + . + + + + + + The key material of a column encryption key consists of three components, + concatenated in this order: the MAC key, the encryption key, and the IV + key. shows the total length that a + key generated for each algorithm is required to have. The MAC key and the + encryption key are used by the referenced encryption algorithms; see there + for details. The IV key is used for computing the static initialization + vector for deterministic encryption; it is unused for randomized + encryption. + + + + + Column Encryption Key Algorithms + + + + PostgreSQL ID + Name + Description + MAC key length (octets) + Encryption key length (octets) + IV key length (octets) + Total key length (octets) + + + + + 32768 + AEAD_AES_128_CBC_HMAC_SHA_256 + + 16 + 16 + 16 + 48 + + + 32769 + AEAD_AES_192_CBC_HMAC_SHA_384 + + 24 + 24 + 24 + 72 + + + 32770 + AEAD_AES_256_CBC_HMAC_SHA_384 + + 24 + 32 + 24 + 90 + + + 32771 + AEAD_AES_256_CBC_HMAC_SHA_512 + + 32 + 32 + 32 + 96 + + + +
+ + + The associated data in these algorithms consists of 4 + bytes: The ASCII letters P and G + (byte values 80 and 71), followed by the version number as a 16-bit + unsigned integer in network byte order. The version number is currently + always 1. (This is intended to allow for possible incompatible changes or + extensions in the future.) + + + + The length of the initialization vector is 16 octets for all CEK algorithm + variants. For randomized encryption, the initialization vector should be + (cryptographically strong) random bytes. For deterministic encryption, + the initialization vector is constructed as + +SUBSTRING(HMAC(K, P) FOR IVLEN) + + where HMAC is the HMAC function associated with + the algorithm, K is the IV key, and + P is the plaintext to be encrypted. + + + + Summary of Changes since Protocol 2.0 diff --git a/doc/src/sgml/ref/allfiles.sgml b/doc/src/sgml/ref/allfiles.sgml index e90a0e1f83..331b1f010b 100644 --- a/doc/src/sgml/ref/allfiles.sgml +++ b/doc/src/sgml/ref/allfiles.sgml @@ -8,6 +8,8 @@ + + @@ -62,6 +64,8 @@ + + @@ -109,6 +113,8 @@ + + diff --git a/doc/src/sgml/ref/alter_column_encryption_key.sgml b/doc/src/sgml/ref/alter_column_encryption_key.sgml new file mode 100644 index 0000000000..7597cd80ca --- /dev/null +++ b/doc/src/sgml/ref/alter_column_encryption_key.sgml @@ -0,0 +1,186 @@ + + + + + ALTER COLUMN ENCRYPTION KEY + + + + ALTER COLUMN ENCRYPTION KEY + 7 + SQL - Language Statements + + + + ALTER COLUMN ENCRYPTION KEY + change the definition of a column encryption key + + + + +ALTER COLUMN ENCRYPTION KEY name ADD VALUE ( + COLUMN_MASTER_KEY = cmk, + [ ALGORITHM = algorithm, ] + ENCRYPTED_VALUE = encval +) + +ALTER COLUMN ENCRYPTION KEY name DROP VALUE ( + COLUMN_MASTER_KEY = cmk +) + +ALTER COLUMN ENCRYPTION KEY name RENAME TO new_name +ALTER COLUMN ENCRYPTION KEY name OWNER TO { new_owner | CURRENT_ROLE | CURRENT_USER | SESSION_USER } + + + + + Description + + + ALTER COLUMN ENCRYPTION KEY changes the definition of a + column encryption key. + + + + The first form adds new encrypted key data to a column encryption key, + which must be encrypted with a different column master key than the + existing key data. The second form removes a key data entry for a given + column master key. Together, these forms can be used for column master key + rotation. + + + + You must own the column encryption key to use ALTER COLUMN + ENCRYPTION KEY. To alter the owner, you must also be a direct or + indirect member of the new owning role, and that role must have + CREATE privilege on the column encryption key's + database. (These restrictions enforce that altering the owner doesn't do + anything you couldn't do by dropping and recreating the column encryption + key. However, a superuser can alter ownership of any column encryption key + anyway.) + + + + + Parameters + + + + name + + + The name of an existing column encryption key. + + + + + + cmk + + + + The name of the column master key that was used to encrypt this column + encryption key. + + + + + + algorithm + + + + The encryption algorithm that was used to encrypt the key material of + this column encryption key. See for details + + + + + + encval + + + + The key material of this column encryption key, encrypted with the + specified column master key using the specified algorithm. The value + must be a bytea-compatible literal. + + + + + + new_name + + + The new name of the column encryption key. + + + + + + new_owner + + + The new owner of the column encryption key. + + + + + + + + Examples + + + To rotate the master keys used to encrypt a given column encryption key, + use a command sequence like this: + +ALTER COLUMN ENCRYPTION KEY cek1 ADD VALUE ( + COLUMN_MASTER_KEY = cmk2, + ENCRYPTED_VALUE = '\x01020204...' +); + +ALTER COLUMN ENCRYPTION KEY cek1 DROP VALUE ( + COLUMN_MASTER_KEY = cmk1 +); + + + + + To rename the column encryption key cek1 to + cek2: + +ALTER COLUMN ENCRYPTION KEY cek1 RENAME TO cek2; + + + + + To change the owner of the column encryption key cek1 to + joe: + +ALTER COLUMN ENCRYPTION KEY cek1 OWNER TO joe; + + + + + Compatibility + + + There is no ALTER COLUMN ENCRYPTION KEY statement in the + SQL standard. + + + + + See Also + + + + + + + diff --git a/doc/src/sgml/ref/alter_column_master_key.sgml b/doc/src/sgml/ref/alter_column_master_key.sgml new file mode 100644 index 0000000000..370347ec9c --- /dev/null +++ b/doc/src/sgml/ref/alter_column_master_key.sgml @@ -0,0 +1,124 @@ + + + + + ALTER COLUMN MASTER KEY + + + + ALTER COLUMN MASTER KEY + 7 + SQL - Language Statements + + + + ALTER COLUMN MASTER KEY + change the definition of a column master key + + + + +ALTER COLUMN MASTER KEY name ( REALM = realm ) + +ALTER COLUMN MASTER KEY name RENAME TO new_name +ALTER COLUMN MASTER KEY name OWNER TO { new_owner | CURRENT_ROLE | CURRENT_USER | SESSION_USER } + + + + + Description + + + ALTER COLUMN MASTER KEY changes the definition of a + column master key. + + + + The first form changes the parameters of a column master key. See for details. + + + + You must own the column master key to use ALTER COLUMN MASTER + KEY. To alter the owner, you must also be a direct or indirect + member of the new owning role, and that role must have + CREATE privilege on the column master key's database. + (These restrictions enforce that altering the owner doesn't do anything you + couldn't do by dropping and recreating the column master key. However, a + superuser can alter ownership of any column master key anyway.) + + + + + Parameters + + + + name + + + The name (optionally schema-qualified) of an existing column master key. + + + + + + new_name + + + The new name of the column master key. + + + + + + new_owner + + + The new owner of the column master key. + + + + + + + + Examples + + + To rename the column master key cmk1 to + cmk2: + +ALTER COLUMN MASTER KEY cmk1 RENAME TO cmk2; + + + + + To change the owner of the column master key cmk1 to + joe: + +ALTER COLUMN MASTER KEY cmk1 OWNER TO joe; + + + + + Compatibility + + + There is no ALTER COLUMN MASTER KEY statement in the + SQL standard. + + + + + See Also + + + + + + + diff --git a/doc/src/sgml/ref/copy.sgml b/doc/src/sgml/ref/copy.sgml index c25b52d0cb..8c461b8f15 100644 --- a/doc/src/sgml/ref/copy.sgml +++ b/doc/src/sgml/ref/copy.sgml @@ -555,6 +555,15 @@ Notes null strings to null values and unquoted null strings to empty strings. + + COPY does not support transparent column encryption or + decryption; its input or output data will always be the ciphertext. This + is usually suitable for backups (see also ). + If transparent encryption or decryption is wanted, + INSERT and SELECT need to be used + instead to write and read the data. + + diff --git a/doc/src/sgml/ref/create_column_encryption_key.sgml b/doc/src/sgml/ref/create_column_encryption_key.sgml new file mode 100644 index 0000000000..72e7ce74db --- /dev/null +++ b/doc/src/sgml/ref/create_column_encryption_key.sgml @@ -0,0 +1,168 @@ + + + + + CREATE COLUMN ENCRYPTION KEY + + + + CREATE COLUMN ENCRYPTION KEY + 7 + SQL - Language Statements + + + + CREATE COLUMN ENCRYPTION KEY + define a new column encryption key + + + + +CREATE COLUMN ENCRYPTION KEY name WITH VALUES ( + COLUMN_MASTER_KEY = cmk, + [ ALGORITHM = algorithm, ] + ENCRYPTED_VALUE = encval +) +[ , ... ] + + + + + Description + + + CREATE COLUMN ENCRYPTION KEY defines a new column + encryption key. A column encryption key is used for client-side encryption + of table columns that have been defined as encrypted. The key material of + a column encryption key is stored in the database's system catalogs, + encrypted (wrapped) by a column master key (which in turn is only + accessible to the client, not the database server). + + + + A column encryption key can be associated with more than one column master + key. To specify that, specify more than one parenthesized definition (see + also the examples). + + + + + Parameters + + + + name + + + + The name of the new column encryption key. + + + + + + cmk + + + + The name of the column master key that was used to encrypt this column + encryption key. + + + + + + algorithm + + + + The encryption algorithm that was used to encrypt the key material of + this column encryption key. Supported algorithms are: + + + unspecified + + + RSAES_OAEP_SHA_1 + + + RSAES_OAEP_SHA_256 + + + + + + This is informational only. The specified value is provided to the + client, which may use it for decrypting the column encryption key on the + client side. But a client is also free to ignore this information and + figure out how to arrange the decryption in some other way. In that + case, specifying the algorithm as unspecified would be + appropriate. + + + + + + encval + + + + The key material of this column encryption key, encrypted with the + specified column master key using the specified algorithm. The value + must be a bytea-compatible literal. + + + + + + + + Examples + + + +CREATE COLUMN ENCRYPTION KEY cek1 WITH VALUES ( + COLUMN_MASTER_KEY = cmk1, + ENCRYPTED_VALUE = '\x01020204...' +); + + + + + To specify more than one associated column master key: + +CREATE COLUMN ENCRYPTION KEY cek1 WITH VALUES ( + COLUMN_MASTER_KEY = cmk1, + ENCRYPTED_VALUE = '\x01020204...' +), +( + COLUMN_MASTER_KEY = cmk2, + ENCRYPTED_VALUE = '\xF1F2F2F4...' +); + + + + + + Compatibility + + + There is no CREATE COLUMN ENCRYPTION KEY statement in + the SQL standard. + + + + + See Also + + + + + + + + + diff --git a/doc/src/sgml/ref/create_column_master_key.sgml b/doc/src/sgml/ref/create_column_master_key.sgml new file mode 100644 index 0000000000..6a1e3ad360 --- /dev/null +++ b/doc/src/sgml/ref/create_column_master_key.sgml @@ -0,0 +1,106 @@ + + + + + CREATE COLUMN MASTER KEY + + + + CREATE COLUMN MASTER KEY + 7 + SQL - Language Statements + + + + CREATE COLUMN MASTER KEY + define a new column master key + + + + +CREATE COLUMN MASTER KEY name [ WITH ( + [ REALM = realm ] +) ] + + + + + Description + + + CREATE COLUMN MASTER KEY defines a new column master + key. A column master key is used to encrypt column encryption keys, which + are the keys that actually encrypt the column data. The key material of + the column master key is not stored in the database. The definition of a + column master key records information that will allow a client to locate + the key material, for example in a file or in a key management system. + + + + + Parameters + + + + name + + + + The name of the new column master key. + + + + + + realm + + + + This is an optional string that can be used to organize column master + keys into groups for lookup by clients. The intent is that all column + master keys that are stored in the same system (file system location, + key management system, etc.) should be in the same realm. A client + would then be configured to look up all keys in a given realm in a + certain way. See the documentation of the respective client library for + further usage instructions. + + + + The default is the empty string. + + + + + + + + Examples + + +CREATE COLUMN MASTER KEY cmk1 (realm = 'myrealm'); + + + + + Compatibility + + + There is no CREATE COLUMN MASTER KEY statement in + the SQL standard. + + + + + See Also + + + + + + + + + diff --git a/doc/src/sgml/ref/create_table.sgml b/doc/src/sgml/ref/create_table.sgml index c98223b2a5..e4bf54e2e6 100644 --- a/doc/src/sgml/ref/create_table.sgml +++ b/doc/src/sgml/ref/create_table.sgml @@ -22,7 +22,7 @@ CREATE [ [ GLOBAL | LOCAL ] { TEMPORARY | TEMP } | UNLOGGED ] TABLE [ IF NOT EXISTS ] table_name ( [ - { column_name data_type [ STORAGE { PLAIN | EXTERNAL | EXTENDED | MAIN | DEFAULT } ] [ COMPRESSION compression_method ] [ COLLATE collation ] [ column_constraint [ ... ] ] + { column_name data_type [ ENCRYPTED WITH ( encryption_options ) ] [ STORAGE { PLAIN | EXTERNAL | EXTENDED | MAIN | DEFAULT } ] [ COMPRESSION compression_method ] [ COLLATE collation ] [ column_constraint [ ... ] ] | table_constraint | LIKE source_table [ like_option ... ] } [, ... ] @@ -351,6 +351,46 @@ Parameters + + ENCRYPTED WITH ( encryption_options ) + + + Enables transparent column encryption for the column. + encryption_options are comma-separated + key=value specifications. The following options are + available: + + + column_encryption_key + + + Specifies the name of the column encryption key to use. Specifying + this is mandatory. + + + + + encryption_type + + + randomized (the default) or deterministic + + + + + algorithm + + + The encryption algorithm to use. The default is + AEAD_AES_128_CBC_HMAC_SHA_256. + + + + + + + + INHERITS ( parent_table [, ... ] ) diff --git a/doc/src/sgml/ref/drop_column_encryption_key.sgml b/doc/src/sgml/ref/drop_column_encryption_key.sgml new file mode 100644 index 0000000000..9d157de9c5 --- /dev/null +++ b/doc/src/sgml/ref/drop_column_encryption_key.sgml @@ -0,0 +1,112 @@ + + + + + DROP COLUMN ENCRYPTION KEY + + + + DROP COLUMN ENCRYPTION KEY + 7 + SQL - Language Statements + + + + DROP COLUMN ENCRYPTION KEY + remove a column encryption key + + + + +DROP COLUMN ENCRYPTION KEY [ IF EXISTS ] name [ CASCADE | RESTRICT ] + + + + + Description + + + DROP COLUMN ENCRYPTION KEY removes a previously defined + column encryption key. To be able to drop a column encryption key, you + must be its owner. + + + + + Parameters + + + + IF EXISTS + + + Do not throw an error if the column encryption key does not exist. + A notice is issued in this case. + + + + + + name + + + + The name of the column encryption key. + + + + + + CASCADE + + + Automatically drop objects that depend on the column encryption key, + and in turn all objects that depend on those objects + (see ). + + + + + + RESTRICT + + + Refuse to drop the column encryption key if any objects depend on it. This + is the default. + + + + + + + + Examples + + + +DROP COLUMN ENCRYPTION KEY cek1; + + + + + Compatibility + + + There is no DROP COLUMN ENCRYPTION KEY statement in + the SQL standard. + + + + + See Also + + + + + + + + diff --git a/doc/src/sgml/ref/drop_column_master_key.sgml b/doc/src/sgml/ref/drop_column_master_key.sgml new file mode 100644 index 0000000000..c85098ea1c --- /dev/null +++ b/doc/src/sgml/ref/drop_column_master_key.sgml @@ -0,0 +1,112 @@ + + + + + DROP COLUMN MASTER KEY + + + + DROP COLUMN MASTER KEY + 7 + SQL - Language Statements + + + + DROP COLUMN MASTER KEY + remove a column master key + + + + +DROP COLUMN MASTER KEY [ IF EXISTS ] name [ CASCADE | RESTRICT ] + + + + + Description + + + DROP COLUMN MASTER KEY removes a previously defined + column master key. To be able to drop a column master key, you + must be its owner. + + + + + Parameters + + + + IF EXISTS + + + Do not throw an error if the column master key does not exist. + A notice is issued in this case. + + + + + + name + + + + The name of the column master key. + + + + + + CASCADE + + + Automatically drop objects that depend on the column master key, + and in turn all objects that depend on those objects + (see ). + + + + + + RESTRICT + + + Refuse to drop the column master key if any objects depend on it. This + is the default. + + + + + + + + Examples + + + +DROP COLUMN MASTER KEY cek1; + + + + + Compatibility + + + There is no DROP COLUMN MASTER KEY statement in + the SQL standard. + + + + + See Also + + + + + + + + diff --git a/doc/src/sgml/ref/pg_dump.sgml b/doc/src/sgml/ref/pg_dump.sgml index 2c938cd7e1..5b3cbf919c 100644 --- a/doc/src/sgml/ref/pg_dump.sgml +++ b/doc/src/sgml/ref/pg_dump.sgml @@ -715,6 +715,37 @@ Options + + + + + This option causes the values of all encrypted columns to be decrypted + and written to the output in plaintext. By default, the values of + encrypted columns are written to the dump in ciphertext (that is, they + are not decrypted). + + + + This option requires that , + or + is also specified. + (COPY does not support column decryption.) + + + + For routine backups, the default behavior is appropriate and most + efficient. This option is suitable if the data is meant to be + inspected or exported for other purposes. Note that a dump created + with this option cannot be restored into a database with column + encryption. + + + + + diff --git a/doc/src/sgml/ref/pg_dumpall.sgml b/doc/src/sgml/ref/pg_dumpall.sgml index e62d05e5ab..4bf60c729f 100644 --- a/doc/src/sgml/ref/pg_dumpall.sgml +++ b/doc/src/sgml/ref/pg_dumpall.sgml @@ -259,6 +259,33 @@ Options + + + + + This option causes the values of all encrypted columns to be decrypted + and written to the output in plaintext. By default, the values of + encrypted columns are written to the dump in ciphertext (that is, they + are not decrypted). + + + + This option requires that , + or + is also specified. + (COPY does not support column decryption.) + + + + For routine backups, the default behavior is appropriate and most + efficient. This option is suitable if the data is meant to be + inspected or exported for other purposes. Note that a dump created + with this option cannot be restored into a database with column + encryption. + + + + diff --git a/doc/src/sgml/ref/psql-ref.sgml b/doc/src/sgml/ref/psql-ref.sgml index 8a5285da9a..5f8e44b0bd 100644 --- a/doc/src/sgml/ref/psql-ref.sgml +++ b/doc/src/sgml/ref/psql-ref.sgml @@ -1420,6 +1420,34 @@ Meta-Commands + + \dcek[+] [ pattern ] + + + Lists column encryption keys. If pattern is specified, only column + encryption keys whose names match the pattern are listed. If + + is appended to the command name, each object is + listed with its associated description. + + + + + + + \dcmk[+] [ pattern ] + + + Lists column master keys. If pattern is specified, only column + master keys whose names match the pattern are listed. If + + is appended to the command name, each object is + listed with its associated description. + + + + + \dconfig[+] [ pattern ] @@ -4022,6 +4050,17 @@ Variables + + HIDE_COLUMN_ENCRYPTION + + + If this variable is set to true, column encryption + details are not displayed. This is mainly useful for regression + tests. + + + + HIDE_TOAST_COMPRESSION diff --git a/doc/src/sgml/reference.sgml b/doc/src/sgml/reference.sgml index a3b743e8c1..e1425c222f 100644 --- a/doc/src/sgml/reference.sgml +++ b/doc/src/sgml/reference.sgml @@ -36,6 +36,8 @@ SQL Commands &abort; &alterAggregate; &alterCollation; + &alterColumnEncryptionKey; + &alterColumnMasterKey; &alterConversion; &alterDatabase; &alterDefaultPrivileges; @@ -90,6 +92,8 @@ SQL Commands &createAggregate; &createCast; &createCollation; + &createColumnEncryptionKey; + &createColumnMasterKey; &createConversion; &createDatabase; &createDomain; @@ -137,6 +141,8 @@ SQL Commands &dropAggregate; &dropCast; &dropCollation; + &dropColumnEncryptionKey; + &dropColumnMasterKey; &dropConversion; &dropDatabase; &dropDomain; diff --git a/src/backend/access/common/printsimple.c b/src/backend/access/common/printsimple.c index c99ae54cb0..1740096a3f 100644 --- a/src/backend/access/common/printsimple.c +++ b/src/backend/access/common/printsimple.c @@ -20,7 +20,9 @@ #include "access/printsimple.h" #include "catalog/pg_type.h" +#include "libpq/libpq-be.h" #include "libpq/pqformat.h" +#include "miscadmin.h" #include "utils/builtins.h" /* @@ -46,6 +48,11 @@ printsimple_startup(DestReceiver *self, int operation, TupleDesc tupdesc) pq_sendint16(&buf, attr->attlen); pq_sendint32(&buf, attr->atttypmod); pq_sendint16(&buf, 0); /* format code */ + if (MyProcPort->column_encryption_enabled) + { + pq_sendint32(&buf, 0); /* CEK */ + pq_sendint32(&buf, 0); /* CEK alg */ + } } pq_endmessage(&buf); diff --git a/src/backend/access/common/printtup.c b/src/backend/access/common/printtup.c index d2f3b57288..f3ba617fc0 100644 --- a/src/backend/access/common/printtup.c +++ b/src/backend/access/common/printtup.c @@ -15,13 +15,28 @@ */ #include "postgres.h" +#include "access/genam.h" #include "access/printtup.h" +#include "access/skey.h" +#include "access/table.h" +#include "catalog/pg_colenckey.h" +#include "catalog/pg_colenckeydata.h" +#include "catalog/pg_colmasterkey.h" #include "libpq/libpq.h" +#include "libpq/libpq-be.h" #include "libpq/pqformat.h" +#include "miscadmin.h" #include "tcop/pquery.h" +#include "utils/array.h" +#include "utils/arrayaccess.h" +#include "utils/builtins.h" +#include "utils/fmgroids.h" +#include "utils/inval.h" #include "utils/lsyscache.h" #include "utils/memdebug.h" #include "utils/memutils.h" +#include "utils/rel.h" +#include "utils/syscache.h" static void printtup_startup(DestReceiver *self, int operation, @@ -151,6 +166,156 @@ printtup_startup(DestReceiver *self, int operation, TupleDesc typeinfo) */ } +/* + * Send ColumnMasterKey message, unless it's already been sent in this session + * for this key. + */ +List *cmk_sent = NIL; + +static void +cmk_change_cb(Datum arg, int cacheid, uint32 hashvalue) +{ + list_free(cmk_sent); + cmk_sent = NIL; +} + +static void +MaybeSendColumnMasterKeyMessage(Oid cmkid) +{ + HeapTuple tuple; + Form_pg_colmasterkey cmkform; + Datum datum; + bool isnull; + StringInfoData buf; + static bool registered_inval = false; + MemoryContext oldcontext; + + Assert(MyProcPort->column_encryption_enabled); + + if (list_member_oid(cmk_sent, cmkid)) + return; + + tuple = SearchSysCache1(CMKOID, ObjectIdGetDatum(cmkid)); + if (!HeapTupleIsValid(tuple)) + elog(ERROR, "cache lookup failed for column master key %u", cmkid); + cmkform = (Form_pg_colmasterkey) GETSTRUCT(tuple); + + pq_beginmessage(&buf, 'y'); /* ColumnMasterKey */ + pq_sendint32(&buf, cmkform->oid); + pq_sendstring(&buf, NameStr(cmkform->cmkname)); + datum = SysCacheGetAttr(CMKOID, tuple, Anum_pg_colmasterkey_cmkrealm, &isnull); + Assert(!isnull); + pq_sendstring(&buf, TextDatumGetCString(datum)); + pq_endmessage(&buf); + + ReleaseSysCache(tuple); + + if (!registered_inval) + { + CacheRegisterSyscacheCallback(CMKOID, cmk_change_cb, (Datum) 0); + registered_inval = true; + } + + oldcontext = MemoryContextSwitchTo(TopMemoryContext); + cmk_sent = lappend_oid(cmk_sent, cmkid); + MemoryContextSwitchTo(oldcontext); +} + +/* + * Send ColumnEncryptionKey message, unless it's already been sent in this + * session for this key. + */ +List *cek_sent = NIL; + +static void +cek_change_cb(Datum arg, int cacheid, uint32 hashvalue) +{ + list_free(cek_sent); + cek_sent = NIL; +} + +void +MaybeSendColumnEncryptionKeyMessage(Oid attcek) +{ + HeapTuple tuple; + ScanKeyData skey[1]; + SysScanDesc sd; + Relation rel; + bool found = false; + static bool registered_inval = false; + MemoryContext oldcontext; + + Assert(MyProcPort->column_encryption_enabled); + + if (list_member_oid(cek_sent, attcek)) + return; + + /* + * We really only need data from pg_colenckeydata, but before we scan + * that, let's check that an entry exists in pg_colenckey, so that if + * there are catalog inconsistencies, we can locate them better. + */ + if (!SearchSysCacheExists1(CEKOID, ObjectIdGetDatum(attcek))) + elog(ERROR, "cache lookup failed for column encryption key %u", attcek); + + /* + * Now scan pg_colenckeydata. + */ + ScanKeyInit(&skey[0], + Anum_pg_colenckeydata_ckdcekid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(attcek)); + rel = table_open(ColumnEncKeyDataRelationId, AccessShareLock); + sd = systable_beginscan(rel, ColumnEncKeyCekidCmkidIndexId, true, NULL, 1, skey); + + while ((tuple = systable_getnext(sd))) + { + Form_pg_colenckeydata ckdform = (Form_pg_colenckeydata) GETSTRUCT(tuple); + Datum datum; + bool isnull; + bytea *ba; + StringInfoData buf; + + MaybeSendColumnMasterKeyMessage(ckdform->ckdcmkid); + + datum = heap_getattr(tuple, Anum_pg_colenckeydata_ckdencval, RelationGetDescr(rel), &isnull); + Assert(!isnull); + ba = pg_detoast_datum_packed((bytea *) DatumGetPointer(datum)); + + pq_beginmessage(&buf, 'Y'); /* ColumnEncryptionKey */ + pq_sendint32(&buf, ckdform->ckdcekid); + pq_sendint32(&buf, ckdform->ckdcmkid); + pq_sendint32(&buf, ckdform->ckdcmkalg); + pq_sendint32(&buf, VARSIZE_ANY_EXHDR(ba)); + pq_sendbytes(&buf, VARDATA_ANY(ba), VARSIZE_ANY_EXHDR(ba)); + pq_endmessage(&buf); + + found = true; + } + + /* + * This is a user-facing message, because with ALTER it is possible to + * delete all data entries for a CEK. + */ + if (!found) + ereport(ERROR, + errcode(ERRCODE_UNDEFINED_OBJECT), + errmsg("no data for column encryption key \"%s\"", get_cek_name(attcek, false))); + + systable_endscan(sd); + table_close(rel, NoLock); + + if (!registered_inval) + { + CacheRegisterSyscacheCallback(CEKDATAOID, cek_change_cb, (Datum) 0); + registered_inval = true; + } + + oldcontext = MemoryContextSwitchTo(TopMemoryContext); + cek_sent = lappend_oid(cek_sent, attcek); + MemoryContextSwitchTo(oldcontext); +} + /* * SendRowDescriptionMessage --- send a RowDescription message to the frontend * @@ -167,6 +332,7 @@ SendRowDescriptionMessage(StringInfo buf, TupleDesc typeinfo, List *targetlist, int16 *formats) { int natts = typeinfo->natts; + size_t sz; int i; ListCell *tlist_item = list_head(targetlist); @@ -183,14 +349,17 @@ SendRowDescriptionMessage(StringInfo buf, TupleDesc typeinfo, * Have to overestimate the size of the column-names, to account for * character set overhead. */ - enlargeStringInfo(buf, (NAMEDATALEN * MAX_CONVERSION_GROWTH /* attname */ - + sizeof(Oid) /* resorigtbl */ - + sizeof(AttrNumber) /* resorigcol */ - + sizeof(Oid) /* atttypid */ - + sizeof(int16) /* attlen */ - + sizeof(int32) /* attypmod */ - + sizeof(int16) /* format */ - ) * natts); + sz = (NAMEDATALEN * MAX_CONVERSION_GROWTH /* attname */ + + sizeof(Oid) /* resorigtbl */ + + sizeof(AttrNumber) /* resorigcol */ + + sizeof(Oid) /* atttypid */ + + sizeof(int16) /* attlen */ + + sizeof(int32) /* attypmod */ + + sizeof(int16)); /* format */ + if (MyProcPort->column_encryption_enabled) + sz += (sizeof(int32) /* attcekid */ + + sizeof(int32)); /* attencalg */ + enlargeStringInfo(buf, sz * natts); for (i = 0; i < natts; ++i) { @@ -200,6 +369,8 @@ SendRowDescriptionMessage(StringInfo buf, TupleDesc typeinfo, Oid resorigtbl; AttrNumber resorigcol; int16 format; + Oid attcekid = InvalidOid; + int32 attencalg = 0; /* * If column is a domain, send the base type and typmod instead. @@ -231,6 +402,28 @@ SendRowDescriptionMessage(StringInfo buf, TupleDesc typeinfo, else format = 0; + if (MyProcPort->column_encryption_enabled && type_is_encrypted(atttypid)) + { + HeapTuple tp; + Form_pg_attribute orig_att; + + tp = SearchSysCache2(ATTNUM, ObjectIdGetDatum(resorigtbl), Int16GetDatum(resorigcol)); + if (!HeapTupleIsValid(tp)) + elog(ERROR, "cache lookup failed for attribute %d of relation %u", resorigcol, resorigtbl); + orig_att = (Form_pg_attribute) GETSTRUCT(tp); + MaybeSendColumnEncryptionKeyMessage(orig_att->attcek); + atttypid = orig_att->attrealtypid; + attcekid = orig_att->attcek; + attencalg = orig_att->attencalg; + ReleaseSysCache(tp); + + /* + * Encrypted types are always sent in binary when column + * encryption is enabled. + */ + format = 1; + } + pq_writestring(buf, NameStr(att->attname)); pq_writeint32(buf, resorigtbl); pq_writeint16(buf, resorigcol); @@ -238,6 +431,11 @@ SendRowDescriptionMessage(StringInfo buf, TupleDesc typeinfo, pq_writeint16(buf, att->attlen); pq_writeint32(buf, atttypmod); pq_writeint16(buf, format); + if (MyProcPort->column_encryption_enabled) + { + pq_writeint32(buf, attcekid); + pq_writeint32(buf, attencalg); + } } pq_endmessage_reuse(buf); @@ -271,6 +469,13 @@ printtup_prepare_info(DR_printtup *myState, TupleDesc typeinfo, int numAttrs) int16 format = (formats ? formats[i] : 0); Form_pg_attribute attr = TupleDescAttr(typeinfo, i); + /* + * Encrypted types are always sent in binary when column encryption is + * enabled. + */ + if (MyProcPort->column_encryption_enabled && type_is_encrypted(attr->atttypid)) + format = 1; + thisState->format = format; if (format == 0) { diff --git a/src/backend/access/common/tupdesc.c b/src/backend/access/common/tupdesc.c index 7857f55e24..32b131781f 100644 --- a/src/backend/access/common/tupdesc.c +++ b/src/backend/access/common/tupdesc.c @@ -459,6 +459,12 @@ equalTupleDescs(TupleDesc tupdesc1, TupleDesc tupdesc2) return false; if (attr1->attislocal != attr2->attislocal) return false; + if (attr1->attcek != attr2->attcek) + return false; + if (attr1->attrealtypid != attr2->attrealtypid) + return false; + if (attr1->attencalg != attr2->attencalg) + return false; if (attr1->attinhcount != attr2->attinhcount) return false; if (attr1->attcollation != attr2->attcollation) @@ -629,6 +635,9 @@ TupleDescInitEntry(TupleDesc desc, att->attgenerated = '\0'; att->attisdropped = false; att->attislocal = true; + att->attcek = 0; + att->attrealtypid = 0; + att->attencalg = 0; att->attinhcount = 0; /* variable-length fields are not present in tupledescs */ @@ -690,6 +699,9 @@ TupleDescInitBuiltinEntry(TupleDesc desc, att->attgenerated = '\0'; att->attisdropped = false; att->attislocal = true; + att->attcek = 0; + att->attrealtypid = 0; + att->attencalg = 0; att->attinhcount = 0; /* variable-length fields are not present in tupledescs */ diff --git a/src/backend/access/hash/hashvalidate.c b/src/backend/access/hash/hashvalidate.c index 10bf26ce7c..cea91d4a88 100644 --- a/src/backend/access/hash/hashvalidate.c +++ b/src/backend/access/hash/hashvalidate.c @@ -331,7 +331,7 @@ check_hash_func_signature(Oid funcid, int16 amprocnum, Oid argtype) argtype == BOOLOID) /* okay, allowed use of hashchar() */ ; else if ((funcid == F_HASHVARLENA || funcid == F_HASHVARLENAEXTENDED) && - argtype == BYTEAOID) + (argtype == BYTEAOID || argtype == PG_ENCRYPTED_DETOID)) /* okay, allowed use of hashvarlena() */ ; else result = false; diff --git a/src/backend/catalog/Makefile b/src/backend/catalog/Makefile index 89a0221ec9..7e1a91b974 100644 --- a/src/backend/catalog/Makefile +++ b/src/backend/catalog/Makefile @@ -72,7 +72,8 @@ CATALOG_HEADERS := \ pg_collation.h pg_parameter_acl.h pg_partitioned_table.h \ pg_range.h pg_transform.h \ pg_sequence.h pg_publication.h pg_publication_namespace.h \ - pg_publication_rel.h pg_subscription.h pg_subscription_rel.h + pg_publication_rel.h pg_subscription.h pg_subscription_rel.h \ + pg_colmasterkey.h pg_colenckey.h pg_colenckeydata.h GENERATED_HEADERS := $(CATALOG_HEADERS:%.h=%_d.h) schemapg.h system_fk_info.h diff --git a/src/backend/catalog/aclchk.c b/src/backend/catalog/aclchk.c index b5019059e8..fac60d56fb 100644 --- a/src/backend/catalog/aclchk.c +++ b/src/backend/catalog/aclchk.c @@ -33,7 +33,9 @@ #include "catalog/pg_authid.h" #include "catalog/pg_cast.h" #include "catalog/pg_class.h" +#include "catalog/pg_colenckey.h" #include "catalog/pg_collation.h" +#include "catalog/pg_colmasterkey.h" #include "catalog/pg_conversion.h" #include "catalog/pg_database.h" #include "catalog/pg_default_acl.h" @@ -2798,6 +2800,9 @@ aclcheck_error(AclResult aclerr, ObjectType objtype, case OBJECT_AMPROC: case OBJECT_ATTRIBUTE: case OBJECT_CAST: + case OBJECT_CEK: + case OBJECT_CEKDATA: + case OBJECT_CMK: case OBJECT_DEFAULT: case OBJECT_DEFACL: case OBJECT_DOMCONSTRAINT: @@ -2828,6 +2833,12 @@ aclcheck_error(AclResult aclerr, ObjectType objtype, case OBJECT_AGGREGATE: msg = gettext_noop("must be owner of aggregate %s"); break; + case OBJECT_CEK: + msg = gettext_noop("must be owner of column encryption key %s"); + break; + case OBJECT_CMK: + msg = gettext_noop("must be owner of column master key %s"); + break; case OBJECT_COLLATION: msg = gettext_noop("must be owner of collation %s"); break; @@ -2938,6 +2949,7 @@ aclcheck_error(AclResult aclerr, ObjectType objtype, case OBJECT_AMPROC: case OBJECT_ATTRIBUTE: case OBJECT_CAST: + case OBJECT_CEKDATA: case OBJECT_DEFAULT: case OBJECT_DEFACL: case OBJECT_DOMCONSTRAINT: diff --git a/src/backend/catalog/dependency.c b/src/backend/catalog/dependency.c index 30394dccf5..3c64763266 100644 --- a/src/backend/catalog/dependency.c +++ b/src/backend/catalog/dependency.c @@ -30,7 +30,10 @@ #include "catalog/pg_authid.h" #include "catalog/pg_auth_members.h" #include "catalog/pg_cast.h" +#include "catalog/pg_colenckey.h" +#include "catalog/pg_colenckeydata.h" #include "catalog/pg_collation.h" +#include "catalog/pg_colmasterkey.h" #include "catalog/pg_constraint.h" #include "catalog/pg_conversion.h" #include "catalog/pg_database.h" @@ -153,6 +156,9 @@ static const Oid object_classes[] = { TypeRelationId, /* OCLASS_TYPE */ CastRelationId, /* OCLASS_CAST */ CollationRelationId, /* OCLASS_COLLATION */ + ColumnEncKeyRelationId, /* OCLASS_CEK */ + ColumnEncKeyDataRelationId, /* OCLASS_CEKDATA */ + ColumnMasterKeyRelationId, /* OCLASS_CMK */ ConstraintRelationId, /* OCLASS_CONSTRAINT */ ConversionRelationId, /* OCLASS_CONVERSION */ AttrDefaultRelationId, /* OCLASS_DEFAULT */ @@ -1493,6 +1499,9 @@ doDeletion(const ObjectAddress *object, int flags) case OCLASS_CAST: case OCLASS_COLLATION: + case OCLASS_CEK: + case OCLASS_CEKDATA: + case OCLASS_CMK: case OCLASS_CONVERSION: case OCLASS_LANGUAGE: case OCLASS_OPCLASS: @@ -2859,6 +2868,15 @@ getObjectClass(const ObjectAddress *object) case CollationRelationId: return OCLASS_COLLATION; + case ColumnEncKeyRelationId: + return OCLASS_CEK; + + case ColumnEncKeyDataRelationId: + return OCLASS_CEKDATA; + + case ColumnMasterKeyRelationId: + return OCLASS_CMK; + case ConstraintRelationId: return OCLASS_CONSTRAINT; diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c index bdd413f01b..c042d92196 100644 --- a/src/backend/catalog/heap.c +++ b/src/backend/catalog/heap.c @@ -42,6 +42,7 @@ #include "catalog/partition.h" #include "catalog/pg_am.h" #include "catalog/pg_attrdef.h" +#include "catalog/pg_colenckey.h" #include "catalog/pg_collation.h" #include "catalog/pg_constraint.h" #include "catalog/pg_foreign_table.h" @@ -749,6 +750,9 @@ InsertPgAttributeTuples(Relation pg_attribute_rel, slot[slotCount]->tts_values[Anum_pg_attribute_attgenerated - 1] = CharGetDatum(attrs->attgenerated); slot[slotCount]->tts_values[Anum_pg_attribute_attisdropped - 1] = BoolGetDatum(attrs->attisdropped); slot[slotCount]->tts_values[Anum_pg_attribute_attislocal - 1] = BoolGetDatum(attrs->attislocal); + slot[slotCount]->tts_values[Anum_pg_attribute_attcek - 1] = ObjectIdGetDatum(attrs->attcek); + slot[slotCount]->tts_values[Anum_pg_attribute_attrealtypid - 1] = ObjectIdGetDatum(attrs->attrealtypid); + slot[slotCount]->tts_values[Anum_pg_attribute_attencalg - 1] = Int32GetDatum(attrs->attencalg); slot[slotCount]->tts_values[Anum_pg_attribute_attinhcount - 1] = Int32GetDatum(attrs->attinhcount); slot[slotCount]->tts_values[Anum_pg_attribute_attcollation - 1] = ObjectIdGetDatum(attrs->attcollation); if (attoptions && attoptions[natts] != (Datum) 0) @@ -840,6 +844,20 @@ AddNewAttributeTuples(Oid new_rel_oid, tupdesc->attrs[i].attcollation); recordDependencyOn(&myself, &referenced, DEPENDENCY_NORMAL); } + + if (OidIsValid(tupdesc->attrs[i].attcek)) + { + ObjectAddressSet(referenced, ColumnEncKeyRelationId, + tupdesc->attrs[i].attcek); + recordDependencyOn(&myself, &referenced, DEPENDENCY_NORMAL); + } + + if (OidIsValid(tupdesc->attrs[i].attrealtypid)) + { + ObjectAddressSet(referenced, TypeRelationId, + tupdesc->attrs[i].attrealtypid); + recordDependencyOn(&myself, &referenced, DEPENDENCY_NORMAL); + } } /* diff --git a/src/backend/catalog/objectaddress.c b/src/backend/catalog/objectaddress.c index fe97fbf79d..1dfe4b6926 100644 --- a/src/backend/catalog/objectaddress.c +++ b/src/backend/catalog/objectaddress.c @@ -29,7 +29,10 @@ #include "catalog/pg_authid.h" #include "catalog/pg_auth_members.h" #include "catalog/pg_cast.h" +#include "catalog/pg_colenckey.h" +#include "catalog/pg_colenckeydata.h" #include "catalog/pg_collation.h" +#include "catalog/pg_colmasterkey.h" #include "catalog/pg_constraint.h" #include "catalog/pg_conversion.h" #include "catalog/pg_database.h" @@ -191,6 +194,48 @@ static const ObjectPropertyType ObjectProperty[] = OBJECT_COLLATION, true }, + { + "column encryption key", + ColumnEncKeyRelationId, + ColumnEncKeyOidIndexId, + CEKOID, + CEKNAME, + Anum_pg_colenckey_oid, + Anum_pg_colenckey_cekname, + InvalidAttrNumber, + Anum_pg_colenckey_cekowner, + InvalidAttrNumber, + OBJECT_CEK, + true + }, + { + "column encryption key data", + ColumnEncKeyDataRelationId, + ColumnEncKeyDataOidIndexId, + CEKDATAOID, + -1, + Anum_pg_colenckeydata_oid, + InvalidAttrNumber, + InvalidAttrNumber, + InvalidAttrNumber, + InvalidAttrNumber, + -1, + false + }, + { + "column master key", + ColumnMasterKeyRelationId, + ColumnMasterKeyOidIndexId, + CMKOID, + CMKNAME, + Anum_pg_colmasterkey_oid, + Anum_pg_colmasterkey_cmkname, + InvalidAttrNumber, + Anum_pg_colmasterkey_cmkowner, + InvalidAttrNumber, + OBJECT_CMK, + true + }, { "constraint", ConstraintRelationId, @@ -723,6 +768,18 @@ static const struct object_type_map { "collation", OBJECT_COLLATION }, + /* OCLASS_CEK */ + { + "column encryption key", OBJECT_CEK + }, + /* OCLASS_CEKDATA */ + { + "column encryption key data", OBJECT_CEKDATA + }, + /* OCLASS_CMK */ + { + "column master key", OBJECT_CMK + }, /* OCLASS_CONSTRAINT */ { "table constraint", OBJECT_TABCONSTRAINT @@ -1029,6 +1086,8 @@ get_object_address(ObjectType objtype, Node *object, address.objectSubId = 0; } break; + case OBJECT_CEK: + case OBJECT_CMK: case OBJECT_DATABASE: case OBJECT_EXTENSION: case OBJECT_TABLESPACE: @@ -1108,6 +1167,21 @@ get_object_address(ObjectType objtype, Node *object, address.objectSubId = 0; } break; + case OBJECT_CEKDATA: + { + char *cekname = strVal(linitial(castNode(List, object))); + char *cmkname = strVal(lsecond(castNode(List, object))); + Oid cekid; + Oid cmkid; + + cekid = get_cek_oid(cekname, missing_ok); + cmkid = get_cmk_oid(cmkname, missing_ok); + + address.classId = ColumnEncKeyDataRelationId; + address.objectId = get_cekdata_oid(cekid, cmkid, missing_ok); + address.objectSubId = 0; + } + break; case OBJECT_TRANSFORM: { TypeName *typename = linitial_node(TypeName, castNode(List, object)); @@ -1293,6 +1367,16 @@ get_object_address_unqualified(ObjectType objtype, address.objectId = get_am_oid(name, missing_ok); address.objectSubId = 0; break; + case OBJECT_CEK: + address.classId = ColumnEncKeyRelationId; + address.objectId = get_cek_oid(name, missing_ok); + address.objectSubId = 0; + break; + case OBJECT_CMK: + address.classId = ColumnMasterKeyRelationId; + address.objectId = get_cmk_oid(name, missing_ok); + address.objectSubId = 0; + break; case OBJECT_DATABASE: address.classId = DatabaseRelationId; address.objectId = get_database_oid(name, missing_ok); @@ -2253,6 +2337,7 @@ pg_get_object_address(PG_FUNCTION_ARGS) */ switch (type) { + case OBJECT_CEKDATA: case OBJECT_PUBLICATION_NAMESPACE: case OBJECT_USER_MAPPING: if (list_length(name) != 1) @@ -2327,6 +2412,8 @@ pg_get_object_address(PG_FUNCTION_ARGS) objnode = (Node *) name; break; case OBJECT_ACCESS_METHOD: + case OBJECT_CEK: + case OBJECT_CMK: case OBJECT_DATABASE: case OBJECT_EVENT_TRIGGER: case OBJECT_EXTENSION: @@ -2357,6 +2444,7 @@ pg_get_object_address(PG_FUNCTION_ARGS) case OBJECT_PUBLICATION_REL: objnode = (Node *) list_make2(name, linitial(args)); break; + case OBJECT_CEKDATA: case OBJECT_PUBLICATION_NAMESPACE: case OBJECT_USER_MAPPING: objnode = (Node *) list_make2(linitial(name), linitial(args)); @@ -2480,6 +2568,8 @@ check_object_ownership(Oid roleid, ObjectType objtype, ObjectAddress address, aclcheck_error(ACLCHECK_NOT_OWNER, objtype, NameListToString((castNode(ObjectWithArgs, object))->objname)); break; + case OBJECT_CEK: + case OBJECT_CMK: case OBJECT_DATABASE: case OBJECT_EVENT_TRIGGER: case OBJECT_EXTENSION: @@ -2572,6 +2662,7 @@ check_object_ownership(Oid roleid, ObjectType objtype, ObjectAddress address, break; case OBJECT_AMOP: case OBJECT_AMPROC: + case OBJECT_CEKDATA: case OBJECT_DEFAULT: case OBJECT_DEFACL: case OBJECT_PUBLICATION_NAMESPACE: @@ -3037,6 +3128,48 @@ getObjectDescription(const ObjectAddress *object, bool missing_ok) break; } + case OCLASS_CEK: + { + char *cekname = get_cek_name(object->objectId, missing_ok); + + if (cekname) + appendStringInfo(&buffer, _("column encryption key %s"), cekname); + break; + } + + case OCLASS_CEKDATA: + { + HeapTuple tup; + Form_pg_colenckeydata cekdata; + + tup = SearchSysCache1(CEKDATAOID, ObjectIdGetDatum(object->objectId)); + if (!HeapTupleIsValid(tup)) + { + if (!missing_ok) + elog(ERROR, "cache lookup failed for column encryption key data %u", + object->objectId); + break; + } + + cekdata = (Form_pg_colenckeydata) GETSTRUCT(tup); + + appendStringInfo(&buffer, _("column encryption key %s data for master key %s"), + get_cek_name(cekdata->ckdcekid, false), + get_cmk_name(cekdata->ckdcmkid, false)); + + ReleaseSysCache(tup); + break; + } + + case OCLASS_CMK: + { + char *cmkname = get_cmk_name(object->objectId, missing_ok); + + if (cmkname) + appendStringInfo(&buffer, _("column master key %s"), cmkname); + break; + } + case OCLASS_CONSTRAINT: { HeapTuple conTup; @@ -4461,6 +4594,18 @@ getObjectTypeDescription(const ObjectAddress *object, bool missing_ok) appendStringInfoString(&buffer, "collation"); break; + case OCLASS_CEK: + appendStringInfoString(&buffer, "column encryption key"); + break; + + case OCLASS_CEKDATA: + appendStringInfoString(&buffer, "column encryption key data"); + break; + + case OCLASS_CMK: + appendStringInfoString(&buffer, "column master key"); + break; + case OCLASS_CONSTRAINT: getConstraintTypeDescription(&buffer, object->objectId, missing_ok); @@ -4926,6 +5071,74 @@ getObjectIdentityParts(const ObjectAddress *object, break; } + case OCLASS_CEK: + { + HeapTuple tup; + Form_pg_colenckey form; + + tup = SearchSysCache1(CEKOID, ObjectIdGetDatum(object->objectId)); + if (!HeapTupleIsValid(tup)) + { + if (!missing_ok) + elog(ERROR, "cache lookup failed for column encryption key %u", + object->objectId); + break; + } + form = (Form_pg_colenckey) GETSTRUCT(tup); + appendStringInfoString(&buffer, + quote_identifier(NameStr(form->cekname))); + if (objname) + *objname = list_make1(pstrdup(NameStr(form->cekname))); + ReleaseSysCache(tup); + break; + } + + case OCLASS_CEKDATA: + { + HeapTuple tup; + Form_pg_colenckeydata form; + + tup = SearchSysCache1(CEKDATAOID, ObjectIdGetDatum(object->objectId)); + if (!HeapTupleIsValid(tup)) + { + if (!missing_ok) + elog(ERROR, "cache lookup failed for column encryption key data %u", + object->objectId); + break; + } + form = (Form_pg_colenckeydata) GETSTRUCT(tup); + appendStringInfo(&buffer, + "of %s for %s", get_cek_name(form->ckdcekid, false), get_cmk_name(form->ckdcmkid, false)); + if (objname) + *objname = list_make1(get_cek_name(form->ckdcekid, false)); + if (objargs) + *objargs = list_make1(get_cmk_name(form->ckdcmkid, false)); + ReleaseSysCache(tup); + break; + } + + case OCLASS_CMK: + { + HeapTuple tup; + Form_pg_colmasterkey form; + + tup = SearchSysCache1(CMKOID, ObjectIdGetDatum(object->objectId)); + if (!HeapTupleIsValid(tup)) + { + if (!missing_ok) + elog(ERROR, "cache lookup failed for column master key %u", + object->objectId); + break; + } + form = (Form_pg_colmasterkey) GETSTRUCT(tup); + appendStringInfoString(&buffer, + quote_identifier(NameStr(form->cmkname))); + if (objname) + *objname = list_make1(pstrdup(NameStr(form->cmkname))); + ReleaseSysCache(tup); + break; + } + case OCLASS_CONSTRAINT: { HeapTuple conTup; diff --git a/src/backend/commands/Makefile b/src/backend/commands/Makefile index 48f7348f91..69f6175c60 100644 --- a/src/backend/commands/Makefile +++ b/src/backend/commands/Makefile @@ -19,6 +19,7 @@ OBJS = \ analyze.o \ async.o \ cluster.o \ + colenccmds.o \ collationcmds.o \ comment.o \ constraint.o \ diff --git a/src/backend/commands/alter.c b/src/backend/commands/alter.c index 10b6fe19a2..db1ada3909 100644 --- a/src/backend/commands/alter.c +++ b/src/backend/commands/alter.c @@ -22,7 +22,9 @@ #include "catalog/indexing.h" #include "catalog/namespace.h" #include "catalog/objectaccess.h" +#include "catalog/pg_colenckey.h" #include "catalog/pg_collation.h" +#include "catalog/pg_colmasterkey.h" #include "catalog/pg_conversion.h" #include "catalog/pg_event_trigger.h" #include "catalog/pg_foreign_data_wrapper.h" @@ -80,6 +82,12 @@ report_name_conflict(Oid classId, const char *name) switch (classId) { + case ColumnEncKeyRelationId: + msgfmt = gettext_noop("column encryption key \"%s\" already exists"); + break; + case ColumnMasterKeyRelationId: + msgfmt = gettext_noop("column master key \"%s\" already exists"); + break; case EventTriggerRelationId: msgfmt = gettext_noop("event trigger \"%s\" already exists"); break; @@ -375,6 +383,8 @@ ExecRenameStmt(RenameStmt *stmt) return RenameType(stmt); case OBJECT_AGGREGATE: + case OBJECT_CEK: + case OBJECT_CMK: case OBJECT_COLLATION: case OBJECT_CONVERSION: case OBJECT_EVENT_TRIGGER: @@ -639,6 +649,9 @@ AlterObjectNamespace_oid(Oid classId, Oid objid, Oid nspOid, break; case OCLASS_CAST: + case OCLASS_CEK: + case OCLASS_CEKDATA: + case OCLASS_CMK: case OCLASS_CONSTRAINT: case OCLASS_DEFAULT: case OCLASS_LANGUAGE: @@ -872,6 +885,8 @@ ExecAlterOwnerStmt(AlterOwnerStmt *stmt) /* Generic cases */ case OBJECT_AGGREGATE: + case OBJECT_CEK: + case OBJECT_CMK: case OBJECT_COLLATION: case OBJECT_CONVERSION: case OBJECT_FUNCTION: diff --git a/src/backend/commands/colenccmds.c b/src/backend/commands/colenccmds.c new file mode 100644 index 0000000000..b4a85101cd --- /dev/null +++ b/src/backend/commands/colenccmds.c @@ -0,0 +1,426 @@ +/*------------------------------------------------------------------------- + * + * colenccmds.c + * column-encryption-related commands support code + * + * Portions Copyright (c) 1996-2023, PostgreSQL Global Development Group + * Portions Copyright (c) 1994, Regents of the University of California + * + * + * IDENTIFICATION + * src/backend/commands/colenccmds.c + * + *------------------------------------------------------------------------- + */ +#include "postgres.h" + +#include "access/htup_details.h" +#include "access/table.h" +#include "catalog/catalog.h" +#include "catalog/dependency.h" +#include "catalog/indexing.h" +#include "catalog/objectaccess.h" +#include "catalog/pg_colenckey.h" +#include "catalog/pg_colenckeydata.h" +#include "catalog/pg_colmasterkey.h" +#include "catalog/pg_database.h" +#include "commands/colenccmds.h" +#include "commands/dbcommands.h" +#include "commands/defrem.h" +#include "common/colenc.h" +#include "miscadmin.h" +#include "utils/acl.h" +#include "utils/builtins.h" +#include "utils/lsyscache.h" +#include "utils/rel.h" +#include "utils/syscache.h" + +static void +parse_cek_attributes(ParseState *pstate, List *definition, Oid *cmkoid_p, int *alg_p, char **encval_p) +{ + ListCell *lc; + DefElem *cmkEl = NULL; + DefElem *algEl = NULL; + DefElem *encvalEl = NULL; + Oid cmkoid = InvalidOid; + int alg = 0; + char *encval = NULL; + + Assert(cmkoid_p); + + foreach(lc, definition) + { + DefElem *defel = lfirst_node(DefElem, lc); + DefElem **defelp; + + if (strcmp(defel->defname, "column_master_key") == 0) + defelp = &cmkEl; + else if (strcmp(defel->defname, "algorithm") == 0) + defelp = &algEl; + else if (strcmp(defel->defname, "encrypted_value") == 0) + defelp = &encvalEl; + else + { + ereport(ERROR, + (errcode(ERRCODE_SYNTAX_ERROR), + errmsg("column encryption key attribute \"%s\" not recognized", + defel->defname), + parser_errposition(pstate, defel->location))); + } + if (*defelp != NULL) + errorConflictingDefElem(defel, pstate); + *defelp = defel; + } + + if (cmkEl) + { + char *val = defGetString(cmkEl); + + cmkoid = GetSysCacheOid1(CMKNAME, Anum_pg_colmasterkey_oid, PointerGetDatum(val)); + if (!cmkoid) + ereport(ERROR, + errcode(ERRCODE_UNDEFINED_OBJECT), + errmsg("column master key \"%s\" does not exist", val)); + } + else + ereport(ERROR, + (errcode(ERRCODE_SYNTAX_ERROR), + errmsg("attribute \"%s\" must be specified", + "column_master_key"))); + + if (algEl) + { + char *val = defGetString(algEl); + + if (!alg_p) + ereport(ERROR, + (errcode(ERRCODE_SYNTAX_ERROR), + errmsg("attribute \"%s\" must not be specified", + "algorithm"))); + + alg = get_cmkalg_num(val); + if (!alg) + ereport(ERROR, + errcode(ERRCODE_INVALID_PARAMETER_VALUE), + errmsg("unrecognized encryption algorithm: %s", val)); + } + else + { + if (alg_p) + ereport(ERROR, + (errcode(ERRCODE_SYNTAX_ERROR), + errmsg("attribute \"%s\" must be specified", + "algorithm"))); + } + + if (encvalEl) + { + if (!encval_p) + ereport(ERROR, + (errcode(ERRCODE_SYNTAX_ERROR), + errmsg("attribute \"%s\" must not be specified", + "encrypted_value"))); + + encval = defGetString(encvalEl); + } + else + { + if (encval_p) + ereport(ERROR, + (errcode(ERRCODE_SYNTAX_ERROR), + errmsg("attribute \"%s\" must be specified", + "encrypted_value"))); + } + + *cmkoid_p = cmkoid; + if (alg_p) + *alg_p = alg; + if (encval_p) + *encval_p = encval; +} + +static void +insert_cekdata_record(Oid cekoid, Oid cmkoid, int alg, char *encval) +{ + Oid cekdataoid; + Relation rel; + Datum values[Natts_pg_colenckeydata] = {0}; + bool nulls[Natts_pg_colenckeydata] = {0}; + HeapTuple tup; + ObjectAddress myself; + ObjectAddress other; + + rel = table_open(ColumnEncKeyDataRelationId, RowExclusiveLock); + + cekdataoid = GetNewOidWithIndex(rel, ColumnEncKeyDataOidIndexId, Anum_pg_colenckeydata_oid); + values[Anum_pg_colenckeydata_oid - 1] = ObjectIdGetDatum(cekdataoid); + values[Anum_pg_colenckeydata_ckdcekid - 1] = ObjectIdGetDatum(cekoid); + values[Anum_pg_colenckeydata_ckdcmkid - 1] = ObjectIdGetDatum(cmkoid); + values[Anum_pg_colenckeydata_ckdcmkalg - 1] = Int32GetDatum(alg); + values[Anum_pg_colenckeydata_ckdencval - 1] = DirectFunctionCall1(byteain, CStringGetDatum(encval)); + + tup = heap_form_tuple(RelationGetDescr(rel), values, nulls); + CatalogTupleInsert(rel, tup); + heap_freetuple(tup); + + ObjectAddressSet(myself, ColumnEncKeyDataRelationId, cekdataoid); + + /* dependency cekdata -> cek */ + ObjectAddressSet(other, ColumnEncKeyRelationId, cekoid); + recordDependencyOn(&myself, &other, DEPENDENCY_AUTO); + + /* dependency cekdata -> cmk */ + ObjectAddressSet(other, ColumnMasterKeyRelationId, cmkoid); + recordDependencyOn(&myself, &other, DEPENDENCY_NORMAL); + + table_close(rel, NoLock); +} + +ObjectAddress +CreateCEK(ParseState *pstate, DefineStmt *stmt) +{ + AclResult aclresult; + Relation rel; + ObjectAddress myself; + Oid cekoid; + ListCell *lc; + Datum values[Natts_pg_colenckey] = {0}; + bool nulls[Natts_pg_colenckey] = {0}; + HeapTuple tup; + + aclresult = object_aclcheck(DatabaseRelationId, MyDatabaseId, GetUserId(), ACL_CREATE); + if (aclresult != ACLCHECK_OK) + aclcheck_error(aclresult, OBJECT_DATABASE, + get_database_name(MyDatabaseId)); + + rel = table_open(ColumnEncKeyRelationId, RowExclusiveLock); + + cekoid = GetSysCacheOid1(CEKNAME, Anum_pg_colenckey_oid, + CStringGetDatum(strVal(llast(stmt->defnames)))); + if (OidIsValid(cekoid)) + ereport(ERROR, + (errcode(ERRCODE_DUPLICATE_OBJECT), + errmsg("column encryption key \"%s\" already exists", + strVal(llast(stmt->defnames))))); + + cekoid = GetNewOidWithIndex(rel, ColumnEncKeyOidIndexId, Anum_pg_colenckey_oid); + + foreach (lc, stmt->definition) + { + List *definition = lfirst_node(List, lc); + Oid cmkoid = 0; + int alg; + char *encval; + + parse_cek_attributes(pstate, definition, &cmkoid, &alg, &encval); + + /* pg_colenckeydata */ + insert_cekdata_record(cekoid, cmkoid, alg, encval); + } + + /* pg_colenckey */ + values[Anum_pg_colenckey_oid - 1] = ObjectIdGetDatum(cekoid); + values[Anum_pg_colenckey_cekname - 1] = + DirectFunctionCall1(namein, CStringGetDatum(strVal(llast(stmt->defnames)))); + values[Anum_pg_colenckey_cekowner - 1] = ObjectIdGetDatum(GetUserId()); + + tup = heap_form_tuple(RelationGetDescr(rel), values, nulls); + CatalogTupleInsert(rel, tup); + heap_freetuple(tup); + + ObjectAddressSet(myself, ColumnEncKeyRelationId, cekoid); + recordDependencyOnOwner(ColumnEncKeyRelationId, cekoid, GetUserId()); + + table_close(rel, RowExclusiveLock); + + InvokeObjectPostCreateHook(ColumnEncKeyRelationId, cekoid, 0); + + return myself; +} + +ObjectAddress +AlterColumnEncryptionKey(ParseState *pstate, AlterColumnEncryptionKeyStmt *stmt) +{ + Oid cekoid; + ObjectAddress address; + + cekoid = get_cek_oid(stmt->cekname, false); + + if (!object_ownercheck(ColumnEncKeyRelationId, cekoid, GetUserId())) + aclcheck_error(ACLCHECK_NOT_OWNER, OBJECT_CEK, stmt->cekname); + + if (stmt->isDrop) + { + Oid cmkoid = 0; + Oid cekdataoid; + ObjectAddress obj; + + parse_cek_attributes(pstate, stmt->definition, &cmkoid, NULL, NULL); + cekdataoid = get_cekdata_oid(cekoid, cmkoid, false); + ObjectAddressSet(obj, ColumnEncKeyDataRelationId, cekdataoid); + performDeletion(&obj, DROP_CASCADE, 0); + } + else + { + Oid cmkoid = 0; + int alg; + char *encval; + + parse_cek_attributes(pstate, stmt->definition, &cmkoid, &alg, &encval); + if (get_cekdata_oid(cekoid, cmkoid, true)) + ereport(ERROR, + errcode(ERRCODE_DUPLICATE_OBJECT), + errmsg("column encryption key \"%s\" already has data for master key \"%s\"", + stmt->cekname, get_cmk_name(cmkoid, false))); + insert_cekdata_record(cekoid, cmkoid, alg, encval); + } + + InvokeObjectPostAlterHook(ColumnEncKeyRelationId, cekoid, 0); + ObjectAddressSet(address, ColumnEncKeyRelationId, cekoid); + + return address; +} + +ObjectAddress +CreateCMK(ParseState *pstate, DefineStmt *stmt) +{ + AclResult aclresult; + Relation rel; + ObjectAddress myself; + Oid cmkoid; + ListCell *lc; + DefElem *realmEl = NULL; + char *realm; + Datum values[Natts_pg_colmasterkey] = {0}; + bool nulls[Natts_pg_colmasterkey] = {0}; + HeapTuple tup; + + aclresult = object_aclcheck(DatabaseRelationId, MyDatabaseId, GetUserId(), ACL_CREATE); + if (aclresult != ACLCHECK_OK) + aclcheck_error(aclresult, OBJECT_DATABASE, + get_database_name(MyDatabaseId)); + + rel = table_open(ColumnMasterKeyRelationId, RowExclusiveLock); + + cmkoid = GetSysCacheOid1(CMKNAME, Anum_pg_colmasterkey_oid, + CStringGetDatum(strVal(llast(stmt->defnames)))); + if (OidIsValid(cmkoid)) + ereport(ERROR, + (errcode(ERRCODE_DUPLICATE_OBJECT), + errmsg("column master key \"%s\" already exists", + strVal(llast(stmt->defnames))))); + + foreach(lc, stmt->definition) + { + DefElem *defel = lfirst_node(DefElem, lc); + DefElem **defelp; + + if (strcmp(defel->defname, "realm") == 0) + defelp = &realmEl; + else + { + ereport(ERROR, + (errcode(ERRCODE_SYNTAX_ERROR), + errmsg("column master key attribute \"%s\" not recognized", + defel->defname), + parser_errposition(pstate, defel->location))); + } + if (*defelp != NULL) + errorConflictingDefElem(defel, pstate); + *defelp = defel; + } + + if (realmEl) + realm = defGetString(realmEl); + else + realm = ""; + + cmkoid = GetNewOidWithIndex(rel, ColumnMasterKeyOidIndexId, Anum_pg_colmasterkey_oid); + values[Anum_pg_colmasterkey_oid - 1] = ObjectIdGetDatum(cmkoid); + values[Anum_pg_colmasterkey_cmkname - 1] = + DirectFunctionCall1(namein, CStringGetDatum(strVal(llast(stmt->defnames)))); + values[Anum_pg_colmasterkey_cmkowner - 1] = ObjectIdGetDatum(GetUserId()); + values[Anum_pg_colmasterkey_cmkrealm - 1] = CStringGetTextDatum(realm); + + tup = heap_form_tuple(RelationGetDescr(rel), values, nulls); + CatalogTupleInsert(rel, tup); + heap_freetuple(tup); + + recordDependencyOnOwner(ColumnMasterKeyRelationId, cmkoid, GetUserId()); + + ObjectAddressSet(myself, ColumnMasterKeyRelationId, cmkoid); + + table_close(rel, RowExclusiveLock); + + InvokeObjectPostCreateHook(ColumnMasterKeyRelationId, cmkoid, 0); + + return myself; +} + +ObjectAddress +AlterColumnMasterKey(ParseState *pstate, AlterColumnMasterKeyStmt *stmt) +{ + Oid cmkoid; + Relation rel; + HeapTuple tup; + HeapTuple newtup; + ObjectAddress address; + ListCell *lc; + DefElem *realmEl = NULL; + Datum values[Natts_pg_colmasterkey] = {0}; + bool nulls[Natts_pg_colmasterkey] = {0}; + bool replaces[Natts_pg_colmasterkey] = {0}; + + cmkoid = get_cmk_oid(stmt->cmkname, false); + + rel = table_open(ColumnMasterKeyRelationId, RowExclusiveLock); + + tup = SearchSysCache1(CMKOID, ObjectIdGetDatum(cmkoid)); + + if (!HeapTupleIsValid(tup)) + elog(ERROR, "cache lookup failed for column master key %u", cmkoid); + + if (!object_ownercheck(ColumnMasterKeyRelationId, cmkoid, GetUserId())) + aclcheck_error(ACLCHECK_NOT_OWNER, OBJECT_CMK, stmt->cmkname); + + foreach(lc, stmt->definition) + { + DefElem *defel = lfirst_node(DefElem, lc); + DefElem **defelp; + + if (strcmp(defel->defname, "realm") == 0) + defelp = &realmEl; + else + { + ereport(ERROR, + (errcode(ERRCODE_SYNTAX_ERROR), + errmsg("column master key attribute \"%s\" not recognized", + defel->defname), + parser_errposition(pstate, defel->location))); + } + if (*defelp != NULL) + errorConflictingDefElem(defel, pstate); + *defelp = defel; + } + + if (realmEl) + { + values[Anum_pg_colmasterkey_cmkrealm - 1] = CStringGetTextDatum(defGetString(realmEl)); + replaces[Anum_pg_colmasterkey_cmkrealm - 1] = true; + } + + newtup = heap_modify_tuple(tup, RelationGetDescr(rel), values, nulls, replaces); + + CatalogTupleUpdate(rel, &tup->t_self, newtup); + + InvokeObjectPostAlterHook(ColumnMasterKeyRelationId, cmkoid, 0); + + ObjectAddressSet(address, ColumnMasterKeyRelationId, cmkoid); + + heap_freetuple(newtup); + ReleaseSysCache(tup); + + table_close(rel, RowExclusiveLock); + + return address; +} diff --git a/src/backend/commands/dropcmds.c b/src/backend/commands/dropcmds.c index db906f530e..ccb369b1af 100644 --- a/src/backend/commands/dropcmds.c +++ b/src/backend/commands/dropcmds.c @@ -276,6 +276,14 @@ does_not_exist_skipping(ObjectType objtype, Node *object) name = NameListToString(castNode(List, object)); } break; + case OBJECT_CEK: + msg = gettext_noop("column encryption key \"%s\" does not exist, skipping"); + name = strVal(object); + break; + case OBJECT_CMK: + msg = gettext_noop("column master key \"%s\" does not exist, skipping"); + name = strVal(object); + break; case OBJECT_CONVERSION: if (!schema_does_not_exist_skipping(castNode(List, object), &msg, &name)) { @@ -503,6 +511,7 @@ does_not_exist_skipping(ObjectType objtype, Node *object) case OBJECT_AMOP: case OBJECT_AMPROC: case OBJECT_ATTRIBUTE: + case OBJECT_CEKDATA: case OBJECT_DEFAULT: case OBJECT_DEFACL: case OBJECT_DOMCONSTRAINT: diff --git a/src/backend/commands/event_trigger.c b/src/backend/commands/event_trigger.c index a3bdc5db07..c10732a56e 100644 --- a/src/backend/commands/event_trigger.c +++ b/src/backend/commands/event_trigger.c @@ -951,6 +951,9 @@ EventTriggerSupportsObjectType(ObjectType obtype) case OBJECT_AMPROC: case OBJECT_ATTRIBUTE: case OBJECT_CAST: + case OBJECT_CEK: + case OBJECT_CEKDATA: + case OBJECT_CMK: case OBJECT_COLUMN: case OBJECT_COLLATION: case OBJECT_CONVERSION: @@ -1027,6 +1030,9 @@ EventTriggerSupportsObjectClass(ObjectClass objclass) case OCLASS_TYPE: case OCLASS_CAST: case OCLASS_COLLATION: + case OCLASS_CEK: + case OCLASS_CEKDATA: + case OCLASS_CMK: case OCLASS_CONSTRAINT: case OCLASS_CONVERSION: case OCLASS_DEFAULT: @@ -2056,6 +2062,9 @@ stringify_grant_objtype(ObjectType objtype) case OBJECT_AMPROC: case OBJECT_ATTRIBUTE: case OBJECT_CAST: + case OBJECT_CEK: + case OBJECT_CEKDATA: + case OBJECT_CMK: case OBJECT_COLLATION: case OBJECT_CONVERSION: case OBJECT_DEFAULT: @@ -2139,6 +2148,9 @@ stringify_adefprivs_objtype(ObjectType objtype) case OBJECT_AMPROC: case OBJECT_ATTRIBUTE: case OBJECT_CAST: + case OBJECT_CEK: + case OBJECT_CEKDATA: + case OBJECT_CMK: case OBJECT_COLLATION: case OBJECT_CONVERSION: case OBJECT_DEFAULT: diff --git a/src/backend/commands/meson.build b/src/backend/commands/meson.build index 9b350d025f..6e26e158c4 100644 --- a/src/backend/commands/meson.build +++ b/src/backend/commands/meson.build @@ -5,6 +5,7 @@ backend_sources += files( 'analyze.c', 'async.c', 'cluster.c', + 'colenccmds.c', 'collationcmds.c', 'comment.c', 'constraint.c', diff --git a/src/backend/commands/prepare.c b/src/backend/commands/prepare.c index 9e29584d93..f34c5ff25a 100644 --- a/src/backend/commands/prepare.c +++ b/src/backend/commands/prepare.c @@ -50,7 +50,6 @@ static void InitQueryHashTable(void); static ParamListInfo EvaluateParams(ParseState *pstate, PreparedStatement *pstmt, List *params, EState *estate); -static Datum build_regtype_array(Oid *param_types, int num_params); /* * Implements the 'PREPARE' utility statement. @@ -62,6 +61,8 @@ PrepareQuery(ParseState *pstate, PrepareStmt *stmt, RawStmt *rawstmt; CachedPlanSource *plansource; Oid *argtypes = NULL; + Oid *argorigtbls = NULL; + AttrNumber *argorigcols = NULL; int nargs; List *query_list; @@ -108,6 +109,9 @@ PrepareQuery(ParseState *pstate, PrepareStmt *stmt, argtypes[i++] = toid; } + + argorigtbls = palloc0_array(Oid, nargs); + argorigcols = palloc0_array(AttrNumber, nargs); } /* @@ -117,7 +121,9 @@ PrepareQuery(ParseState *pstate, PrepareStmt *stmt, * Rewrite the query. The result could be 0, 1, or many queries. */ query_list = pg_analyze_and_rewrite_varparams(rawstmt, pstate->p_sourcetext, - &argtypes, &nargs, NULL); + &argtypes, &nargs, + &argorigtbls, &argorigcols, + NULL); /* Finish filling in the CachedPlanSource */ CompleteCachedPlan(plansource, @@ -125,6 +131,8 @@ PrepareQuery(ParseState *pstate, PrepareStmt *stmt, NULL, argtypes, nargs, + argorigtbls, + argorigcols, NULL, NULL, CURSOR_OPT_PARALLEL_OK, /* allow parallel mode */ @@ -683,34 +691,49 @@ pg_prepared_statement(PG_FUNCTION_ARGS) hash_seq_init(&hash_seq, prepared_queries); while ((prep_stmt = hash_seq_search(&hash_seq)) != NULL) { + int num_params = prep_stmt->plansource->num_params; TupleDesc result_desc; - Datum values[8]; - bool nulls[8] = {0}; + Datum *tmp_ary; + Datum values[10]; + bool nulls[10] = {0}; result_desc = prep_stmt->plansource->resultDesc; values[0] = CStringGetTextDatum(prep_stmt->stmt_name); values[1] = CStringGetTextDatum(prep_stmt->plansource->query_string); values[2] = TimestampTzGetDatum(prep_stmt->prepare_time); - values[3] = build_regtype_array(prep_stmt->plansource->param_types, - prep_stmt->plansource->num_params); + + tmp_ary = palloc_array(Datum, num_params); + for (int i = 0; i < num_params; i++) + tmp_ary[i] = ObjectIdGetDatum(prep_stmt->plansource->param_types[i]); + values[3] = PointerGetDatum(construct_array_builtin(tmp_ary, num_params, REGTYPEOID)); + + tmp_ary = palloc_array(Datum, num_params); + for (int i = 0; i < num_params; i++) + tmp_ary[i] = ObjectIdGetDatum(prep_stmt->plansource->param_origtbls[i]); + values[4] = PointerGetDatum(construct_array_builtin(tmp_ary, num_params, REGCLASSOID)); + + tmp_ary = palloc_array(Datum, num_params); + for (int i = 0; i < num_params; i++) + tmp_ary[i] = Int16GetDatum(prep_stmt->plansource->param_origcols[i]); + values[5] = PointerGetDatum(construct_array_builtin(tmp_ary, num_params, INT2OID)); + if (result_desc) { - Oid *result_types; - - result_types = palloc_array(Oid, result_desc->natts); + tmp_ary = palloc_array(Datum, result_desc->natts); for (int i = 0; i < result_desc->natts; i++) - result_types[i] = result_desc->attrs[i].atttypid; - values[4] = build_regtype_array(result_types, result_desc->natts); + tmp_ary[i] = ObjectIdGetDatum(result_desc->attrs[i].atttypid); + values[6] = PointerGetDatum(construct_array_builtin(tmp_ary, result_desc->natts, REGTYPEOID)); } else { /* no result descriptor (for example, DML statement) */ - nulls[4] = true; + nulls[6] = true; } - values[5] = BoolGetDatum(prep_stmt->from_sql); - values[6] = Int64GetDatumFast(prep_stmt->plansource->num_generic_plans); - values[7] = Int64GetDatumFast(prep_stmt->plansource->num_custom_plans); + + values[7] = BoolGetDatum(prep_stmt->from_sql); + values[8] = Int64GetDatumFast(prep_stmt->plansource->num_generic_plans); + values[9] = Int64GetDatumFast(prep_stmt->plansource->num_custom_plans); tuplestore_putvalues(rsinfo->setResult, rsinfo->setDesc, values, nulls); @@ -719,24 +742,3 @@ pg_prepared_statement(PG_FUNCTION_ARGS) return (Datum) 0; } - -/* - * This utility function takes a C array of Oids, and returns a Datum - * pointing to a one-dimensional Postgres array of regtypes. An empty - * array is returned as a zero-element array, not NULL. - */ -static Datum -build_regtype_array(Oid *param_types, int num_params) -{ - Datum *tmp_ary; - ArrayType *result; - int i; - - tmp_ary = palloc_array(Datum, num_params); - - for (i = 0; i < num_params; i++) - tmp_ary[i] = ObjectIdGetDatum(param_types[i]); - - result = construct_array_builtin(tmp_ary, num_params, REGTYPEOID); - return PointerGetDatum(result); -} diff --git a/src/backend/commands/seclabel.c b/src/backend/commands/seclabel.c index 7ae19b98bb..07ad646a52 100644 --- a/src/backend/commands/seclabel.c +++ b/src/backend/commands/seclabel.c @@ -66,6 +66,9 @@ SecLabelSupportsObjectType(ObjectType objtype) case OBJECT_AMPROC: case OBJECT_ATTRIBUTE: case OBJECT_CAST: + case OBJECT_CEK: + case OBJECT_CEKDATA: + case OBJECT_CMK: case OBJECT_COLLATION: case OBJECT_CONVERSION: case OBJECT_DEFAULT: diff --git a/src/backend/commands/tablecmds.c b/src/backend/commands/tablecmds.c index 56dc995713..9a2c72e1c6 100644 --- a/src/backend/commands/tablecmds.c +++ b/src/backend/commands/tablecmds.c @@ -35,6 +35,7 @@ #include "catalog/partition.h" #include "catalog/pg_am.h" #include "catalog/pg_attrdef.h" +#include "catalog/pg_colenckey.h" #include "catalog/pg_collation.h" #include "catalog/pg_constraint.h" #include "catalog/pg_depend.h" @@ -61,6 +62,7 @@ #include "commands/trigger.h" #include "commands/typecmds.h" #include "commands/user.h" +#include "common/colenc.h" #include "executor/executor.h" #include "foreign/fdwapi.h" #include "foreign/foreign.h" @@ -637,6 +639,7 @@ static List *GetParentedForeignKeyRefs(Relation partition); static void ATDetachCheckNoForeignKeyRefs(Relation partition); static char GetAttributeCompression(Oid atttypid, char *compression); static char GetAttributeStorage(Oid atttypid, const char *storagemode); +static void GetColumnEncryption(const List *coldefencryption, Form_pg_attribute attr); /* ---------------------------------------------------------------- @@ -936,6 +939,9 @@ DefineRelation(CreateStmt *stmt, char relkind, Oid ownerId, attr->attcompression = GetAttributeCompression(attr->atttypid, colDef->compression); + if (colDef->encryption) + GetColumnEncryption(colDef->encryption, attr); + if (colDef->storage_name) attr->attstorage = GetAttributeStorage(attr->atttypid, colDef->storage_name); } @@ -6830,6 +6836,14 @@ ATExecAddColumn(List **wqueue, AlteredTableInfo *tab, Relation rel, attribute.attislocal = colDef->is_local; attribute.attinhcount = colDef->inhcount; attribute.attcollation = collOid; + if (colDef->encryption) + GetColumnEncryption(colDef->encryption, &attribute); + else + { + attribute.attcek = 0; + attribute.attrealtypid = 0; + attribute.attencalg = 0; + } ReleaseSysCache(typeTuple); @@ -12661,6 +12675,9 @@ ATExecAlterColumnType(AlteredTableInfo *tab, Relation rel, case OCLASS_TYPE: case OCLASS_CAST: case OCLASS_COLLATION: + case OCLASS_CEK: + case OCLASS_CEKDATA: + case OCLASS_CMK: case OCLASS_CONVERSION: case OCLASS_LANGUAGE: case OCLASS_LARGEOBJECT: @@ -19300,3 +19317,77 @@ GetAttributeStorage(Oid atttypid, const char *storagemode) return cstorage; } + +/* + * resolve column encryption specification + */ +static void +GetColumnEncryption(const List *coldefencryption, Form_pg_attribute attr) +{ + ListCell *lc; + char *cek = NULL; + Oid cekoid; + bool encdet = false; + int alg = PG_CEK_AEAD_AES_128_CBC_HMAC_SHA_256; + + foreach(lc, coldefencryption) + { + DefElem *el = lfirst_node(DefElem, lc); + + if (strcmp(el->defname, "column_encryption_key") == 0) + cek = strVal(linitial(castNode(TypeName, el->arg)->names)); + else if (strcmp(el->defname, "encryption_type") == 0) + { + char *val = strVal(linitial(castNode(TypeName, el->arg)->names)); + + if (strcmp(val, "deterministic") == 0) + encdet = true; + else if (strcmp(val, "randomized") == 0) + encdet = false; + else + ereport(ERROR, + errcode(ERRCODE_INVALID_PARAMETER_VALUE), + errmsg("unrecognized encryption type: %s", val)); + } + else if (strcmp(el->defname, "algorithm") == 0) + { + char *val = strVal(el->arg); + + alg = get_cekalg_num(val); + + if (!alg) + ereport(ERROR, + errcode(ERRCODE_INVALID_PARAMETER_VALUE), + errmsg("unrecognized encryption algorithm: %s", val)); + } + else + ereport(ERROR, + errcode(ERRCODE_INVALID_PARAMETER_VALUE), + errmsg("unrecognized column encryption parameter: %s", el->defname)); + } + + if (!cek) + ereport(ERROR, + errcode(ERRCODE_INVALID_COLUMN_DEFINITION), + errmsg("column encryption key must be specified")); + + cekoid = GetSysCacheOid1(CEKNAME, Anum_pg_colenckey_oid, PointerGetDatum(cek)); + if (!cekoid) + ereport(ERROR, + errcode(ERRCODE_UNDEFINED_OBJECT), + errmsg("column encryption key \"%s\" does not exist", cek)); + + attr->attcek = cekoid; + attr->attrealtypid = attr->atttypid; + attr->attencalg = alg; + + /* override physical type */ + if (encdet) + attr->atttypid = PG_ENCRYPTED_DETOID; + else + attr->atttypid = PG_ENCRYPTED_RNDOID; + get_typlenbyvalalign(attr->atttypid, + &attr->attlen, &attr->attbyval, &attr->attalign); + attr->attstorage = get_typstorage(attr->atttypid); + attr->attcollation = InvalidOid; +} diff --git a/src/backend/commands/variable.c b/src/backend/commands/variable.c index 00d8d54d82..c67497257b 100644 --- a/src/backend/commands/variable.c +++ b/src/backend/commands/variable.c @@ -25,6 +25,7 @@ #include "access/xlogprefetcher.h" #include "catalog/pg_authid.h" #include "common/string.h" +#include "libpq/libpq-be.h" #include "mb/pg_wchar.h" #include "miscadmin.h" #include "postmaster/postmaster.h" @@ -706,7 +707,11 @@ check_client_encoding(char **newval, void **extra, GucSource source) */ if (PrepareClientEncoding(encoding) < 0) { - if (IsTransactionState()) + if (MyProcPort->column_encryption_enabled) + GUC_check_errdetail("Conversion between %s and %s is not possible when column encryption is enabled.", + canonical_name, + GetDatabaseEncodingName()); + else if (IsTransactionState()) { /* Must be a genuine no-such-conversion problem */ GUC_check_errcode(ERRCODE_FEATURE_NOT_SUPPORTED); diff --git a/src/backend/executor/spi.c b/src/backend/executor/spi.c index fd5796f1b9..8a77605945 100644 --- a/src/backend/executor/spi.c +++ b/src/backend/executor/spi.c @@ -2279,6 +2279,8 @@ _SPI_prepare_plan(const char *src, SPIPlanPtr plan) NULL, plan->argtypes, plan->nargs, + NULL, + NULL, plan->parserSetup, plan->parserSetupArg, plan->cursor_options, @@ -2516,6 +2518,8 @@ _SPI_execute_plan(SPIPlanPtr plan, const SPIExecuteOptions *options, NULL, plan->argtypes, plan->nargs, + NULL, + NULL, plan->parserSetup, plan->parserSetupArg, plan->cursor_options, diff --git a/src/backend/nodes/nodeFuncs.c b/src/backend/nodes/nodeFuncs.c index af8620ceb7..140a14b7a7 100644 --- a/src/backend/nodes/nodeFuncs.c +++ b/src/backend/nodes/nodeFuncs.c @@ -3982,6 +3982,8 @@ raw_expression_tree_walker_impl(Node *node, return true; if (WALK(coldef->compression)) return true; + if (WALK(coldef->encryption)) + return true; if (WALK(coldef->raw_default)) return true; if (WALK(coldef->collClause)) diff --git a/src/backend/parser/analyze.c b/src/backend/parser/analyze.c index 2e593aed2b..f5583c6c20 100644 --- a/src/backend/parser/analyze.c +++ b/src/backend/parser/analyze.c @@ -145,6 +145,7 @@ parse_analyze_fixedparams(RawStmt *parseTree, const char *sourceText, Query * parse_analyze_varparams(RawStmt *parseTree, const char *sourceText, Oid **paramTypes, int *numParams, + Oid **paramOrigTbls, AttrNumber **paramOrigCols, QueryEnvironment *queryEnv) { ParseState *pstate = make_parsestate(NULL); @@ -155,7 +156,7 @@ parse_analyze_varparams(RawStmt *parseTree, const char *sourceText, pstate->p_sourcetext = sourceText; - setup_parse_variable_parameters(pstate, paramTypes, numParams); + setup_parse_variable_parameters(pstate, paramTypes, numParams, paramOrigTbls, paramOrigCols); pstate->p_queryEnv = queryEnv; diff --git a/src/backend/parser/gram.y b/src/backend/parser/gram.y index 63b4baaed9..be4d2d3029 100644 --- a/src/backend/parser/gram.y +++ b/src/backend/parser/gram.y @@ -280,6 +280,7 @@ static Node *makeRecursiveViewSelect(char *relname, List *aliases, Node *query); %type stmt toplevel_stmt schema_stmt routine_body_stmt AlterEventTrigStmt AlterCollationStmt + AlterColumnEncryptionKeyStmt AlterColumnMasterKeyStmt AlterDatabaseStmt AlterDatabaseSetStmt AlterDomainStmt AlterEnumStmt AlterFdwStmt AlterForeignServerStmt AlterGroupStmt AlterObjectDependsStmt AlterObjectSchemaStmt AlterOwnerStmt @@ -419,6 +420,7 @@ static Node *makeRecursiveViewSelect(char *relname, List *aliases, Node *query); %type parse_toplevel stmtmulti routine_body_stmt_list OptTableElementList TableElementList OptInherit definition + list_of_definitions OptTypedTableElementList TypedTableElementList reloptions opt_reloptions OptWith opt_definition func_args func_args_list @@ -592,6 +594,7 @@ static Node *makeRecursiveViewSelect(char *relname, List *aliases, Node *query); %type TableConstraint TableLikeClause %type TableLikeOptionList TableLikeOption %type column_compression opt_column_compression column_storage opt_column_storage +%type opt_column_encryption %type ColQualList %type ColConstraint ColConstraintElem ConstraintAttr %type key_match @@ -690,8 +693,8 @@ static Node *makeRecursiveViewSelect(char *relname, List *aliases, Node *query); DETACH DICTIONARY DISABLE_P DISCARD DISTINCT DO DOCUMENT_P DOMAIN_P DOUBLE_P DROP - EACH ELSE ENABLE_P ENCODING ENCRYPTED END_P ENUM_P ESCAPE EVENT EXCEPT - EXCLUDE EXCLUDING EXCLUSIVE EXECUTE EXISTS EXPLAIN EXPRESSION + EACH ELSE ENABLE_P ENCODING ENCRYPTION ENCRYPTED END_P ENUM_P ESCAPE + EVENT EXCEPT EXCLUDE EXCLUDING EXCLUSIVE EXECUTE EXISTS EXPLAIN EXPRESSION EXTENSION EXTERNAL EXTRACT FALSE_P FAMILY FETCH FILTER FINALIZE FIRST_P FLOAT_P FOLLOWING FOR @@ -714,7 +717,7 @@ static Node *makeRecursiveViewSelect(char *relname, List *aliases, Node *query); LEADING LEAKPROOF LEAST LEFT LEVEL LIKE LIMIT LISTEN LOAD LOCAL LOCALTIME LOCALTIMESTAMP LOCATION LOCK_P LOCKED LOGGED - MAPPING MATCH MATCHED MATERIALIZED MAXVALUE MERGE METHOD + MAPPING MASTER MATCH MATCHED MATERIALIZED MAXVALUE MERGE METHOD MINUTE_P MINVALUE MODE MONTH_P MOVE NAME_P NAMES NATIONAL NATURAL NCHAR NEW NEXT NFC NFD NFKC NFKD NO NONE @@ -942,6 +945,8 @@ toplevel_stmt: stmt: AlterEventTrigStmt | AlterCollationStmt + | AlterColumnEncryptionKeyStmt + | AlterColumnMasterKeyStmt | AlterDatabaseStmt | AlterDatabaseSetStmt | AlterDefaultPrivilegesStmt @@ -3700,14 +3705,15 @@ TypedTableElement: | TableConstraint { $$ = $1; } ; -columnDef: ColId Typename opt_column_storage opt_column_compression create_generic_options ColQualList +columnDef: ColId Typename opt_column_encryption opt_column_storage opt_column_compression create_generic_options ColQualList { ColumnDef *n = makeNode(ColumnDef); n->colname = $1; n->typeName = $2; - n->storage_name = $3; - n->compression = $4; + n->encryption = $3; + n->storage_name = $4; + n->compression = $5; n->inhcount = 0; n->is_local = true; n->is_not_null = false; @@ -3716,8 +3722,8 @@ columnDef: ColId Typename opt_column_storage opt_column_compression create_gener n->raw_default = NULL; n->cooked_default = NULL; n->collOid = InvalidOid; - n->fdwoptions = $5; - SplitColQualList($6, &n->constraints, &n->collClause, + n->fdwoptions = $6; + SplitColQualList($7, &n->constraints, &n->collClause, yyscanner); n->location = @1; $$ = (Node *) n; @@ -3774,6 +3780,11 @@ opt_column_compression: | /*EMPTY*/ { $$ = NULL; } ; +opt_column_encryption: + ENCRYPTED WITH '(' def_list ')' { $$ = $4; } + | /*EMPTY*/ { $$ = NULL; } + ; + column_storage: STORAGE ColId { $$ = $2; } | STORAGE DEFAULT { $$ = pstrdup("default"); } @@ -6270,6 +6281,33 @@ DefineStmt: n->if_not_exists = true; $$ = (Node *) n; } + | CREATE COLUMN ENCRYPTION KEY any_name WITH VALUES list_of_definitions + { + DefineStmt *n = makeNode(DefineStmt); + + n->kind = OBJECT_CEK; + n->defnames = $5; + n->definition = $8; + $$ = (Node *) n; + } + | CREATE COLUMN MASTER KEY any_name + { + DefineStmt *n = makeNode(DefineStmt); + + n->kind = OBJECT_CMK; + n->defnames = $5; + n->definition = NIL; + $$ = (Node *) n; + } + | CREATE COLUMN MASTER KEY any_name WITH definition + { + DefineStmt *n = makeNode(DefineStmt); + + n->kind = OBJECT_CMK; + n->defnames = $5; + n->definition = $7; + $$ = (Node *) n; + } ; definition: '(' def_list ')' { $$ = $2; } @@ -6289,6 +6327,10 @@ def_elem: ColLabel '=' def_arg } ; +list_of_definitions: definition { $$ = list_make1($1); } + | list_of_definitions ',' definition { $$ = lappend($1, $3); } + ; + /* Note: any simple identifier will be returned as a type name! */ def_arg: func_type { $$ = (Node *) $1; } | reserved_keyword { $$ = (Node *) makeString(pstrdup($1)); } @@ -6824,6 +6866,8 @@ object_type_name: drop_type_name: ACCESS METHOD { $$ = OBJECT_ACCESS_METHOD; } + | COLUMN ENCRYPTION KEY { $$ = OBJECT_CEK; } + | COLUMN MASTER KEY { $$ = OBJECT_CMK; } | EVENT TRIGGER { $$ = OBJECT_EVENT_TRIGGER; } | EXTENSION { $$ = OBJECT_EXTENSION; } | FOREIGN DATA_P WRAPPER { $$ = OBJECT_FDW; } @@ -9140,6 +9184,26 @@ RenameStmt: ALTER AGGREGATE aggregate_with_argtypes RENAME TO name n->missing_ok = false; $$ = (Node *) n; } + | ALTER COLUMN ENCRYPTION KEY name RENAME TO name + { + RenameStmt *n = makeNode(RenameStmt); + + n->renameType = OBJECT_CEK; + n->object = (Node *) makeString($5); + n->newname = $8; + n->missing_ok = false; + $$ = (Node *) n; + } + | ALTER COLUMN MASTER KEY name RENAME TO name + { + RenameStmt *n = makeNode(RenameStmt); + + n->renameType = OBJECT_CMK; + n->object = (Node *) makeString($5); + n->newname = $8; + n->missing_ok = false; + $$ = (Node *) n; + } | ALTER CONVERSION_P any_name RENAME TO name { RenameStmt *n = makeNode(RenameStmt); @@ -10148,6 +10212,24 @@ AlterOwnerStmt: ALTER AGGREGATE aggregate_with_argtypes OWNER TO RoleSpec n->newowner = $6; $$ = (Node *) n; } + | ALTER COLUMN ENCRYPTION KEY name OWNER TO RoleSpec + { + AlterOwnerStmt *n = makeNode(AlterOwnerStmt); + + n->objectType = OBJECT_CEK; + n->object = (Node *) makeString($5); + n->newowner = $8; + $$ = (Node *) n; + } + | ALTER COLUMN MASTER KEY name OWNER TO RoleSpec + { + AlterOwnerStmt *n = makeNode(AlterOwnerStmt); + + n->objectType = OBJECT_CMK; + n->object = (Node *) makeString($5); + n->newowner = $8; + $$ = (Node *) n; + } | ALTER CONVERSION_P any_name OWNER TO RoleSpec { AlterOwnerStmt *n = makeNode(AlterOwnerStmt); @@ -11304,6 +11386,52 @@ AlterCollationStmt: ALTER COLLATION any_name REFRESH VERSION_P ; +/***************************************************************************** + * + * ALTER COLUMN ENCRYPTION KEY + * + *****************************************************************************/ + +AlterColumnEncryptionKeyStmt: + ALTER COLUMN ENCRYPTION KEY name ADD_P VALUE_P definition + { + AlterColumnEncryptionKeyStmt *n = makeNode(AlterColumnEncryptionKeyStmt); + + n->cekname = $5; + n->isDrop = false; + n->definition = $8; + $$ = (Node *) n; + } + | ALTER COLUMN ENCRYPTION KEY name DROP VALUE_P definition + { + AlterColumnEncryptionKeyStmt *n = makeNode(AlterColumnEncryptionKeyStmt); + + n->cekname = $5; + n->isDrop = true; + n->definition = $8; + $$ = (Node *) n; + } + ; + + +/***************************************************************************** + * + * ALTER COLUMN MASTER KEY + * + *****************************************************************************/ + +AlterColumnMasterKeyStmt: + ALTER COLUMN MASTER KEY name definition + { + AlterColumnMasterKeyStmt *n = makeNode(AlterColumnMasterKeyStmt); + + n->cmkname = $5; + n->definition = $6; + $$ = (Node *) n; + } + ; + + /***************************************************************************** * * ALTER SYSTEM @@ -16791,6 +16919,7 @@ unreserved_keyword: | ENABLE_P | ENCODING | ENCRYPTED + | ENCRYPTION | ENUM_P | ESCAPE | EVENT @@ -16854,6 +16983,7 @@ unreserved_keyword: | LOCKED | LOGGED | MAPPING + | MASTER | MATCH | MATCHED | MATERIALIZED @@ -17337,6 +17467,7 @@ bare_label_keyword: | ENABLE_P | ENCODING | ENCRYPTED + | ENCRYPTION | END_P | ENUM_P | ESCAPE @@ -17425,6 +17556,7 @@ bare_label_keyword: | LOCKED | LOGGED | MAPPING + | MASTER | MATCH | MATCHED | MATERIALIZED diff --git a/src/backend/parser/parse_param.c b/src/backend/parser/parse_param.c index e80876aa25..aab47b3cfe 100644 --- a/src/backend/parser/parse_param.c +++ b/src/backend/parser/parse_param.c @@ -49,6 +49,8 @@ typedef struct VarParamState { Oid **paramTypes; /* array of parameter type OIDs */ int *numParams; /* number of array entries */ + Oid **paramOrigTbls; /* underlying tables (0 if none) */ + AttrNumber **paramOrigCols; /* underlying columns (0 if none) */ } VarParamState; static Node *fixed_paramref_hook(ParseState *pstate, ParamRef *pref); @@ -56,6 +58,7 @@ static Node *variable_paramref_hook(ParseState *pstate, ParamRef *pref); static Node *variable_coerce_param_hook(ParseState *pstate, Param *param, Oid targetTypeId, int32 targetTypeMod, int location); +static void variable_param_assign_orig_hook(ParseState *pstate, Param *param, Oid origtbl, AttrNumber origcol); static bool check_parameter_resolution_walker(Node *node, ParseState *pstate); static bool query_contains_extern_params_walker(Node *node, void *context); @@ -81,15 +84,19 @@ setup_parse_fixed_parameters(ParseState *pstate, */ void setup_parse_variable_parameters(ParseState *pstate, - Oid **paramTypes, int *numParams) + Oid **paramTypes, int *numParams, + Oid **paramOrigTbls, AttrNumber **paramOrigCols) { VarParamState *parstate = palloc(sizeof(VarParamState)); parstate->paramTypes = paramTypes; parstate->numParams = numParams; + parstate->paramOrigTbls = paramOrigTbls; + parstate->paramOrigCols = paramOrigCols; pstate->p_ref_hook_state = (void *) parstate; pstate->p_paramref_hook = variable_paramref_hook; pstate->p_coerce_param_hook = variable_coerce_param_hook; + pstate->p_param_assign_orig_hook = variable_param_assign_orig_hook; } /* @@ -145,10 +152,24 @@ variable_paramref_hook(ParseState *pstate, ParamRef *pref) { /* Need to enlarge param array */ if (*parstate->paramTypes) + { *parstate->paramTypes = repalloc0_array(*parstate->paramTypes, Oid, *parstate->numParams, paramno); + if (parstate->paramOrigTbls) + *parstate->paramOrigTbls = repalloc0_array(*parstate->paramOrigTbls, Oid, + *parstate->numParams, paramno); + if (parstate->paramOrigCols) + *parstate->paramOrigCols = repalloc0_array(*parstate->paramOrigCols, AttrNumber, + *parstate->numParams, paramno); + } else + { *parstate->paramTypes = palloc0_array(Oid, paramno); + if (parstate->paramOrigTbls) + *parstate->paramOrigTbls = palloc0_array(Oid, paramno); + if (parstate->paramOrigCols) + *parstate->paramOrigCols = palloc0_array(AttrNumber, paramno); + } *parstate->numParams = paramno; } @@ -256,6 +277,18 @@ variable_coerce_param_hook(ParseState *pstate, Param *param, return NULL; } +static void +variable_param_assign_orig_hook(ParseState *pstate, Param *param, Oid origtbl, AttrNumber origcol) +{ + VarParamState *parstate = (VarParamState *) pstate->p_ref_hook_state; + int paramno = param->paramid; + + if (parstate->paramOrigTbls) + (*parstate->paramOrigTbls)[paramno - 1] = origtbl; + if (parstate->paramOrigCols) + (*parstate->paramOrigCols)[paramno - 1] = origcol; +} + /* * Check for consistent assignment of variable parameters after completion * of parsing with parse_variable_parameters. diff --git a/src/backend/parser/parse_target.c b/src/backend/parser/parse_target.c index 56d64c8851..8299df48a0 100644 --- a/src/backend/parser/parse_target.c +++ b/src/backend/parser/parse_target.c @@ -594,6 +594,12 @@ transformAssignedExpr(ParseState *pstate, parser_errposition(pstate, exprLocation(orig_expr)))); } + if (IsA(expr, Param)) + { + if (pstate->p_param_assign_orig_hook) + pstate->p_param_assign_orig_hook(pstate, castNode(Param, expr), RelationGetRelid(pstate->p_target_relation), attrno); + } + pstate->p_expr_kind = sv_expr_kind; return expr; diff --git a/src/backend/postmaster/postmaster.c b/src/backend/postmaster/postmaster.c index f459dab360..d0a4891279 100644 --- a/src/backend/postmaster/postmaster.c +++ b/src/backend/postmaster/postmaster.c @@ -2244,12 +2244,27 @@ ProcessStartupPacket(Port *port, bool ssl_done, bool gss_done) valptr), errhint("Valid values are: \"false\", 0, \"true\", 1, \"database\"."))); } + else if (strcmp(nameptr, "_pq_.column_encryption") == 0) + { + /* + * Right now, the only accepted value is "1". This gives room + * to expand this into a version number, for example. + */ + if (strcmp(valptr, "1") == 0) + port->column_encryption_enabled = true; + else + ereport(FATAL, + (errcode(ERRCODE_INVALID_PARAMETER_VALUE), + errmsg("invalid value for parameter \"%s\": \"%s\"", + "column_encryption", + valptr), + errhint("Valid values are: 1."))); + } else if (strncmp(nameptr, "_pq_.", 5) == 0) { /* * Any option beginning with _pq_. is reserved for use as a - * protocol-level option, but at present no such options are - * defined. + * protocol-level option. */ unrecognized_protocol_options = lappend(unrecognized_protocol_options, pstrdup(nameptr)); diff --git a/src/backend/tcop/postgres.c b/src/backend/tcop/postgres.c index 01d264b5ab..61bd05b330 100644 --- a/src/backend/tcop/postgres.c +++ b/src/backend/tcop/postgres.c @@ -72,6 +72,7 @@ #include "utils/memutils.h" #include "utils/ps_status.h" #include "utils/snapmgr.h" +#include "utils/syscache.h" #include "utils/timeout.h" #include "utils/timestamp.h" @@ -678,6 +679,8 @@ pg_analyze_and_rewrite_varparams(RawStmt *parsetree, const char *query_string, Oid **paramTypes, int *numParams, + Oid **paramOrigTbls, + AttrNumber **paramOrigCols, QueryEnvironment *queryEnv) { Query *query; @@ -692,7 +695,7 @@ pg_analyze_and_rewrite_varparams(RawStmt *parsetree, ResetUsage(); query = parse_analyze_varparams(parsetree, query_string, paramTypes, numParams, - queryEnv); + paramOrigTbls, paramOrigCols, queryEnv); /* * Check all parameter types got determined. @@ -1366,6 +1369,8 @@ exec_parse_message(const char *query_string, /* string to execute */ bool is_named; bool save_log_statement_stats = log_statement_stats; char msec_str[32]; + Oid *paramOrigTbls = palloc_array(Oid, numParams); + AttrNumber *paramOrigCols = palloc_array(AttrNumber, numParams); /* * Report query to various monitoring facilities. @@ -1486,6 +1491,8 @@ exec_parse_message(const char *query_string, /* string to execute */ query_string, ¶mTypes, &numParams, + ¶mOrigTbls, + ¶mOrigCols, NULL); /* Done with the snapshot used for parsing */ @@ -1516,6 +1523,8 @@ exec_parse_message(const char *query_string, /* string to execute */ unnamed_stmt_context, paramTypes, numParams, + paramOrigTbls, + paramOrigCols, NULL, NULL, CURSOR_OPT_PARALLEL_OK, /* allow parallel mode */ @@ -1813,6 +1822,16 @@ exec_bind_message(StringInfo input_message) else pformat = 0; /* default = text */ + if (type_is_encrypted(ptype)) + { + if (pformat & 0xF0) + pformat &= ~0xF0; + else + ereport(ERROR, + (errcode(ERRCODE_PROTOCOL_VIOLATION), + errmsg("parameter corresponds to an encrypted column, but the parameter value was not encrypted"))); + } + if (pformat == 0) /* text mode */ { Oid typinput; @@ -2615,8 +2634,44 @@ exec_describe_statement_message(const char *stmt_name) for (int i = 0; i < psrc->num_params; i++) { Oid ptype = psrc->param_types[i]; + Oid pcekid = InvalidOid; + int pcekalg = 0; + int16 pflags = 0; + + if (MyProcPort->column_encryption_enabled && type_is_encrypted(ptype)) + { + Oid porigtbl = psrc->param_origtbls[i]; + AttrNumber porigcol = psrc->param_origcols[i]; + HeapTuple tp; + Form_pg_attribute orig_att; + + if (porigtbl == InvalidOid || porigcol <= 0) + ereport(ERROR, + (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), + errmsg("parameter %d corresponds to an encrypted column, but an underlying table and column could not be determined", i))); + + tp = SearchSysCache2(ATTNUM, ObjectIdGetDatum(porigtbl), Int16GetDatum(porigcol)); + if (!HeapTupleIsValid(tp)) + elog(ERROR, "cache lookup failed for attribute %d of relation %u", porigcol, porigtbl); + orig_att = (Form_pg_attribute) GETSTRUCT(tp); + ptype = orig_att->attrealtypid; + pcekid = orig_att->attcek; + pcekalg = orig_att->attencalg; + ReleaseSysCache(tp); + + if (psrc->param_types[i] == PG_ENCRYPTED_DETOID) + pflags |= 0x01; + + MaybeSendColumnEncryptionKeyMessage(pcekid); + } pq_sendint32(&row_description_buf, (int) ptype); + if (MyProcPort->column_encryption_enabled) + { + pq_sendint32(&row_description_buf, (int) pcekid); + pq_sendint32(&row_description_buf, pcekalg); + pq_sendint16(&row_description_buf, pflags); + } } pq_endmessage_reuse(&row_description_buf); diff --git a/src/backend/tcop/utility.c b/src/backend/tcop/utility.c index 247d0816ad..49f818d703 100644 --- a/src/backend/tcop/utility.c +++ b/src/backend/tcop/utility.c @@ -30,6 +30,7 @@ #include "commands/alter.h" #include "commands/async.h" #include "commands/cluster.h" +#include "commands/colenccmds.h" #include "commands/collationcmds.h" #include "commands/comment.h" #include "commands/conversioncmds.h" @@ -137,6 +138,8 @@ ClassifyUtilityCommandAsReadOnly(Node *parsetree) switch (nodeTag(parsetree)) { case T_AlterCollationStmt: + case T_AlterColumnEncryptionKeyStmt: + case T_AlterColumnMasterKeyStmt: case T_AlterDatabaseRefreshCollStmt: case T_AlterDatabaseSetStmt: case T_AlterDatabaseStmt: @@ -1441,6 +1444,14 @@ ProcessUtilitySlow(ParseState *pstate, stmt->definition, &secondaryObject); break; + case OBJECT_CEK: + Assert(stmt->args == NIL); + address = CreateCEK(pstate, stmt); + break; + case OBJECT_CMK: + Assert(stmt->args == NIL); + address = CreateCMK(pstate, stmt); + break; case OBJECT_COLLATION: Assert(stmt->args == NIL); address = DefineCollation(pstate, @@ -1903,6 +1914,14 @@ ProcessUtilitySlow(ParseState *pstate, address = AlterCollation((AlterCollationStmt *) parsetree); break; + case T_AlterColumnEncryptionKeyStmt: + address = AlterColumnEncryptionKey(pstate, (AlterColumnEncryptionKeyStmt *) parsetree); + break; + + case T_AlterColumnMasterKeyStmt: + address = AlterColumnMasterKey(pstate, (AlterColumnMasterKeyStmt *) parsetree); + break; + default: elog(ERROR, "unrecognized node type: %d", (int) nodeTag(parsetree)); @@ -2225,6 +2244,12 @@ AlterObjectTypeCommandTag(ObjectType objtype) case OBJECT_COLUMN: tag = CMDTAG_ALTER_TABLE; break; + case OBJECT_CEK: + tag = CMDTAG_ALTER_COLUMN_ENCRYPTION_KEY; + break; + case OBJECT_CMK: + tag = CMDTAG_ALTER_COLUMN_MASTER_KEY; + break; case OBJECT_CONVERSION: tag = CMDTAG_ALTER_CONVERSION; break; @@ -2640,6 +2665,12 @@ CreateCommandTag(Node *parsetree) case OBJECT_STATISTIC_EXT: tag = CMDTAG_DROP_STATISTICS; break; + case OBJECT_CEK: + tag = CMDTAG_DROP_COLUMN_ENCRYPTION_KEY; + break; + case OBJECT_CMK: + tag = CMDTAG_DROP_COLUMN_MASTER_KEY; + break; default: tag = CMDTAG_UNKNOWN; } @@ -2760,6 +2791,12 @@ CreateCommandTag(Node *parsetree) case OBJECT_COLLATION: tag = CMDTAG_CREATE_COLLATION; break; + case OBJECT_CEK: + tag = CMDTAG_CREATE_COLUMN_ENCRYPTION_KEY; + break; + case OBJECT_CMK: + tag = CMDTAG_CREATE_COLUMN_MASTER_KEY; + break; case OBJECT_ACCESS_METHOD: tag = CMDTAG_CREATE_ACCESS_METHOD; break; @@ -3063,6 +3100,14 @@ CreateCommandTag(Node *parsetree) tag = CMDTAG_ALTER_COLLATION; break; + case T_AlterColumnEncryptionKeyStmt: + tag = CMDTAG_ALTER_COLUMN_ENCRYPTION_KEY; + break; + + case T_AlterColumnMasterKeyStmt: + tag = CMDTAG_ALTER_COLUMN_MASTER_KEY; + break; + case T_PrepareStmt: tag = CMDTAG_PREPARE; break; @@ -3688,6 +3733,14 @@ GetCommandLogLevel(Node *parsetree) lev = LOGSTMT_DDL; break; + case T_AlterColumnEncryptionKeyStmt: + lev = LOGSTMT_DDL; + break; + + case T_AlterColumnMasterKeyStmt: + lev = LOGSTMT_DDL; + break; + /* already-planned queries */ case T_PlannedStmt: { diff --git a/src/backend/utils/adt/arrayfuncs.c b/src/backend/utils/adt/arrayfuncs.c index 0d3d46b9a5..1ed83be6d4 100644 --- a/src/backend/utils/adt/arrayfuncs.c +++ b/src/backend/utils/adt/arrayfuncs.c @@ -3412,6 +3412,7 @@ construct_array_builtin(Datum *elems, int nelems, Oid elmtype) break; case OIDOID: + case REGCLASSOID: case REGTYPEOID: elmlen = sizeof(Oid); elmbyval = true; diff --git a/src/backend/utils/adt/varlena.c b/src/backend/utils/adt/varlena.c index 1c52deec55..0525c787fb 100644 --- a/src/backend/utils/adt/varlena.c +++ b/src/backend/utils/adt/varlena.c @@ -663,6 +663,112 @@ unknownsend(PG_FUNCTION_ARGS) PG_RETURN_BYTEA_P(pq_endtypsend(&buf)); } +/* + * pg_encrypted_in - + * + * Input function for pg_encrypted_* types. + * + * The format and additional checks ensure that one cannot easily insert a + * value directly into an encrypted column by accident. (That's why we don't + * just use the bytea format, for example.) But we still have to support + * direct inserts into encrypted columns, for example for restoring backups + * made by pg_dump. + */ +Datum +pg_encrypted_in(PG_FUNCTION_ARGS) +{ + char *inputText = PG_GETARG_CSTRING(0); + char *ip; + size_t hexlen; + int bc; + bytea *result; + + if (strncmp(inputText, "encrypted$", 10) != 0) + ereport(ERROR, + errcode(ERRCODE_INVALID_TEXT_REPRESENTATION), + errmsg("invalid input value for encrypted column value: \"%s\"", + inputText)); + + ip = inputText + 10; + hexlen = strlen(ip); + + /* sanity check to catch obvious mistakes */ + if (hexlen / 2 < 32 || (hexlen / 2) % 16 != 0) + ereport(ERROR, + errcode(ERRCODE_INVALID_TEXT_REPRESENTATION), + errmsg("invalid input value for encrypted column value: \"%s\"", + inputText)); + + bc = hexlen / 2 + VARHDRSZ; /* maximum possible length */ + result = palloc(bc); + bc = hex_decode(ip, hexlen, VARDATA(result)); + SET_VARSIZE(result, bc + VARHDRSZ); /* actual length */ + + PG_RETURN_BYTEA_P(result); +} + +/* + * pg_encrypted_out - + * + * Output function for pg_encrypted_* types. + * + * This output is seen when reading an encrypted column without column + * encryption mode enabled. Therefore, the output format is chosen so that it + * is easily recognizable. + */ +Datum +pg_encrypted_out(PG_FUNCTION_ARGS) +{ + bytea *vlena = PG_GETARG_BYTEA_PP(0); + char *result; + char *rp; + + rp = result = palloc(VARSIZE_ANY_EXHDR(vlena) * 2 + 10 + 1); + memcpy(rp, "encrypted$", 10); + rp += 10; + rp += hex_encode(VARDATA_ANY(vlena), VARSIZE_ANY_EXHDR(vlena), rp); + *rp = '\0'; + PG_RETURN_CSTRING(result); +} + +/* + * pg_encrypted_recv - + * + * Receive function for pg_encrypted_* types. + */ +Datum +pg_encrypted_recv(PG_FUNCTION_ARGS) +{ + StringInfo buf = (StringInfo) PG_GETARG_POINTER(0); + bytea *result; + int nbytes; + + nbytes = buf->len - buf->cursor; + /* sanity check to catch obvious mistakes */ + if (nbytes < 32) + ereport(ERROR, + errcode(ERRCODE_INVALID_BINARY_REPRESENTATION), + errmsg("invalid binary input value for encrypted column value")); + result = (bytea *) palloc(nbytes + VARHDRSZ); + SET_VARSIZE(result, nbytes + VARHDRSZ); + pq_copymsgbytes(buf, VARDATA(result), nbytes); + PG_RETURN_BYTEA_P(result); +} + +/* + * pg_encrypted_send - + * + * Send function for pg_encrypted_* types. + */ +Datum +pg_encrypted_send(PG_FUNCTION_ARGS) +{ + bytea *vlena = PG_GETARG_BYTEA_P_COPY(0); + + /* just return input */ + PG_RETURN_BYTEA_P(vlena); +} + /* ========== PUBLIC ROUTINES ========== */ diff --git a/src/backend/utils/cache/lsyscache.c b/src/backend/utils/cache/lsyscache.c index 94ca8e1230..49f73ca4e8 100644 --- a/src/backend/utils/cache/lsyscache.c +++ b/src/backend/utils/cache/lsyscache.c @@ -24,7 +24,10 @@ #include "catalog/pg_amop.h" #include "catalog/pg_amproc.h" #include "catalog/pg_cast.h" +#include "catalog/pg_colenckey.h" +#include "catalog/pg_colenckeydata.h" #include "catalog/pg_collation.h" +#include "catalog/pg_colmasterkey.h" #include "catalog/pg_constraint.h" #include "catalog/pg_language.h" #include "catalog/pg_namespace.h" @@ -2658,6 +2661,25 @@ type_is_multirange(Oid typid) return (get_typtype(typid) == TYPTYPE_MULTIRANGE); } +bool +type_is_encrypted(Oid typid) +{ + HeapTuple tp; + + tp = SearchSysCache1(TYPEOID, ObjectIdGetDatum(typid)); + if (HeapTupleIsValid(tp)) + { + Form_pg_type typtup = (Form_pg_type) GETSTRUCT(tp); + bool result; + + result = (typtup->typcategory == TYPCATEGORY_ENCRYPTED); + ReleaseSysCache(tp); + return result; + } + else + return false; +} + /* * get_type_category_preferred * @@ -3683,3 +3705,92 @@ get_subscription_name(Oid subid, bool missing_ok) return subname; } + +Oid +get_cek_oid(const char *cekname, bool missing_ok) +{ + Oid oid; + + oid = GetSysCacheOid1(CEKNAME, Anum_pg_colenckey_oid, + CStringGetDatum(cekname)); + if (!OidIsValid(oid) && !missing_ok) + ereport(ERROR, + (errcode(ERRCODE_UNDEFINED_OBJECT), + errmsg("column encryption key \"%s\" does not exist", cekname))); + return oid; +} + +char * +get_cek_name(Oid cekid, bool missing_ok) +{ + HeapTuple tup; + char *cekname; + + tup = SearchSysCache1(CEKOID, ObjectIdGetDatum(cekid)); + + if (!HeapTupleIsValid(tup)) + { + if (!missing_ok) + elog(ERROR, "cache lookup failed for column encryption key %u", cekid); + return NULL; + } + + cekname = pstrdup(NameStr(((Form_pg_colenckey) GETSTRUCT(tup))->cekname)); + + ReleaseSysCache(tup); + + return cekname; +} + +Oid +get_cekdata_oid(Oid cekid, Oid cmkid, bool missing_ok) +{ + Oid cekdataid; + + cekdataid = GetSysCacheOid2(CEKDATACEKCMK, Anum_pg_colenckeydata_oid, + ObjectIdGetDatum(cekid), + ObjectIdGetDatum(cmkid)); + if (!OidIsValid(cekdataid) && !missing_ok) + ereport(ERROR, + (errcode(ERRCODE_UNDEFINED_OBJECT), + errmsg("column encryption key \"%s\" has no data for master key \"%s\"", + get_cek_name(cekid, false), get_cmk_name(cmkid, false)))); + + return cekdataid; +} + +Oid +get_cmk_oid(const char *cmkname, bool missing_ok) +{ + Oid oid; + + oid = GetSysCacheOid1(CMKNAME, Anum_pg_colmasterkey_oid, + CStringGetDatum(cmkname)); + if (!OidIsValid(oid) && !missing_ok) + ereport(ERROR, + (errcode(ERRCODE_UNDEFINED_OBJECT), + errmsg("column master key \"%s\" does not exist", cmkname))); + return oid; +} + +char * +get_cmk_name(Oid cmkid, bool missing_ok) +{ + HeapTuple tup; + char *cmkname; + + tup = SearchSysCache1(CMKOID, ObjectIdGetDatum(cmkid)); + + if (!HeapTupleIsValid(tup)) + { + if (!missing_ok) + elog(ERROR, "cache lookup failed for column master key %u", cmkid); + return NULL; + } + + cmkname = pstrdup(NameStr(((Form_pg_colmasterkey) GETSTRUCT(tup))->cmkname)); + + ReleaseSysCache(tup); + + return cmkname; +} diff --git a/src/backend/utils/cache/plancache.c b/src/backend/utils/cache/plancache.c index cc943205d3..fe2609a97d 100644 --- a/src/backend/utils/cache/plancache.c +++ b/src/backend/utils/cache/plancache.c @@ -340,6 +340,8 @@ CompleteCachedPlan(CachedPlanSource *plansource, MemoryContext querytree_context, Oid *param_types, int num_params, + Oid *param_origtbls, + AttrNumber *param_origcols, ParserSetupHook parserSetup, void *parserSetupArg, int cursor_options, @@ -417,8 +419,16 @@ CompleteCachedPlan(CachedPlanSource *plansource, if (num_params > 0) { - plansource->param_types = (Oid *) palloc(num_params * sizeof(Oid)); + plansource->param_types = palloc_array(Oid, num_params); memcpy(plansource->param_types, param_types, num_params * sizeof(Oid)); + + plansource->param_origtbls = palloc0_array(Oid, num_params); + if (param_origtbls) + memcpy(plansource->param_origtbls, param_origtbls, num_params * sizeof(Oid)); + + plansource->param_origcols = palloc0_array(AttrNumber, num_params); + if (param_origcols) + memcpy(plansource->param_origcols, param_origcols, num_params * sizeof(AttrNumber)); } else plansource->param_types = NULL; @@ -1535,13 +1545,22 @@ CopyCachedPlan(CachedPlanSource *plansource) newsource->commandTag = plansource->commandTag; if (plansource->num_params > 0) { - newsource->param_types = (Oid *) - palloc(plansource->num_params * sizeof(Oid)); + newsource->param_types = palloc_array(Oid, plansource->num_params); memcpy(newsource->param_types, plansource->param_types, plansource->num_params * sizeof(Oid)); + if (plansource->param_origtbls) + { + newsource->param_origtbls = palloc_array(Oid, plansource->num_params); + memcpy(newsource->param_origtbls, plansource->param_origtbls, + plansource->num_params * sizeof(Oid)); + } + if (plansource->param_origcols) + { + newsource->param_origcols = palloc_array(AttrNumber, plansource->num_params); + memcpy(newsource->param_origcols, plansource->param_origcols, + plansource->num_params * sizeof(AttrNumber)); + } } - else - newsource->param_types = NULL; newsource->num_params = plansource->num_params; newsource->parserSetup = plansource->parserSetup; newsource->parserSetupArg = plansource->parserSetupArg; @@ -1549,8 +1568,6 @@ CopyCachedPlan(CachedPlanSource *plansource) newsource->fixed_result = plansource->fixed_result; if (plansource->resultDesc) newsource->resultDesc = CreateTupleDescCopy(plansource->resultDesc); - else - newsource->resultDesc = NULL; newsource->context = source_context; querytree_context = AllocSetContextCreate(source_context, diff --git a/src/backend/utils/cache/syscache.c b/src/backend/utils/cache/syscache.c index 5f17047047..7dd0896bde 100644 --- a/src/backend/utils/cache/syscache.c +++ b/src/backend/utils/cache/syscache.c @@ -29,7 +29,10 @@ #include "catalog/pg_auth_members.h" #include "catalog/pg_authid.h" #include "catalog/pg_cast.h" +#include "catalog/pg_colenckey.h" +#include "catalog/pg_colenckeydata.h" #include "catalog/pg_collation.h" +#include "catalog/pg_colmasterkey.h" #include "catalog/pg_constraint.h" #include "catalog/pg_conversion.h" #include "catalog/pg_database.h" @@ -267,6 +270,43 @@ static const struct cachedesc cacheinfo[] = { }, 256 }, + { + ColumnEncKeyDataRelationId, /* CEKDATACEKCMK */ + ColumnEncKeyCekidCmkidIndexId, + 2, + { + Anum_pg_colenckeydata_ckdcekid, + Anum_pg_colenckeydata_ckdcmkid, + }, + 8 + }, + { + ColumnEncKeyDataRelationId, /* CEKDATAOID */ + ColumnEncKeyDataOidIndexId, + 1, + { + Anum_pg_colenckeydata_oid, + }, + 8 + }, + { + ColumnEncKeyRelationId, /* CEKNAME */ + ColumnEncKeyNameIndexId, + 1, + { + Anum_pg_colenckey_cekname, + }, + 8 + }, + { + ColumnEncKeyRelationId, /* CEKOID */ + ColumnEncKeyOidIndexId, + 1, + { + Anum_pg_colenckey_oid, + }, + 8 + }, {OperatorClassRelationId, /* CLAAMNAMENSP */ OpclassAmNameNspIndexId, 3, @@ -289,6 +329,24 @@ static const struct cachedesc cacheinfo[] = { }, 8 }, + { + ColumnMasterKeyRelationId, /* CMKNAME */ + ColumnMasterKeyNameIndexId, + 1, + { + Anum_pg_colmasterkey_cmkname, + }, + 8 + }, + { + ColumnMasterKeyRelationId, /* CMKOID */ + ColumnMasterKeyOidIndexId, + 1, + { + Anum_pg_colmasterkey_oid, + }, + 8 + }, {CollationRelationId, /* COLLNAMEENCNSP */ CollationNameEncNspIndexId, 3, diff --git a/src/backend/utils/mb/mbutils.c b/src/backend/utils/mb/mbutils.c index 24f37e3ec9..05bd0d408d 100644 --- a/src/backend/utils/mb/mbutils.c +++ b/src/backend/utils/mb/mbutils.c @@ -36,7 +36,9 @@ #include "access/xact.h" #include "catalog/namespace.h" +#include "libpq/libpq-be.h" #include "mb/pg_wchar.h" +#include "miscadmin.h" #include "utils/builtins.h" #include "utils/memutils.h" #include "utils/syscache.h" @@ -129,6 +131,12 @@ PrepareClientEncoding(int encoding) encoding == PG_SQL_ASCII) return 0; + /* + * Cannot do conversion when column encryption is enabled. + */ + if (MyProcPort->column_encryption_enabled) + return -1; + if (IsTransactionState()) { /* @@ -236,6 +244,12 @@ SetClientEncoding(int encoding) return 0; } + /* + * Cannot do conversion when column encryption is enabled. + */ + if (MyProcPort->column_encryption_enabled) + return -1; + /* * Search the cache for the entry previously prepared by * PrepareClientEncoding; if there isn't one, we lose. While at it, @@ -296,7 +310,9 @@ InitializeClientEncoding(void) (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), errmsg("conversion between %s and %s is not supported", pg_enc2name_tbl[pending_client_encoding].name, - GetDatabaseEncodingName()))); + GetDatabaseEncodingName()), + (MyProcPort->column_encryption_enabled) ? + errdetail("Encoding conversion is not possible when column encryption is enabled.") : 0)); } /* diff --git a/src/bin/pg_dump/common.c b/src/bin/pg_dump/common.c index 44fa52cc55..89feceb3bd 100644 --- a/src/bin/pg_dump/common.c +++ b/src/bin/pg_dump/common.c @@ -201,6 +201,12 @@ getSchemaData(Archive *fout, int *numTablesPtr) pg_log_info("reading user-defined collations"); (void) getCollations(fout, &numCollations); + pg_log_info("reading column master keys"); + getColumnMasterKeys(fout); + + pg_log_info("reading column encryption keys"); + getColumnEncryptionKeys(fout); + pg_log_info("reading user-defined conversions"); getConversions(fout, &numConversions); diff --git a/src/bin/pg_dump/pg_backup.h b/src/bin/pg_dump/pg_backup.h index aba780ef4b..afba79b2ea 100644 --- a/src/bin/pg_dump/pg_backup.h +++ b/src/bin/pg_dump/pg_backup.h @@ -85,6 +85,7 @@ typedef struct _connParams char *pghost; char *username; trivalue promptPassword; + int column_encryption; /* If not NULL, this overrides the dbname obtained from command line */ /* (but *only* the DB name, not anything else in the connstring) */ char *override_dbname; diff --git a/src/bin/pg_dump/pg_backup_archiver.c b/src/bin/pg_dump/pg_backup_archiver.c index 7f7a0f1ce7..519d2ad635 100644 --- a/src/bin/pg_dump/pg_backup_archiver.c +++ b/src/bin/pg_dump/pg_backup_archiver.c @@ -3425,6 +3425,8 @@ _getObjectDescription(PQExpBuffer buf, const TocEntry *te) /* objects that don't require special decoration */ if (strcmp(type, "COLLATION") == 0 || + strcmp(type, "COLUMN ENCRYPTION KEY") == 0 || + strcmp(type, "COLUMN MASTER KEY") == 0 || strcmp(type, "CONVERSION") == 0 || strcmp(type, "DOMAIN") == 0 || strcmp(type, "FOREIGN TABLE") == 0 || diff --git a/src/bin/pg_dump/pg_backup_db.c b/src/bin/pg_dump/pg_backup_db.c index f766b65059..c90c2803fc 100644 --- a/src/bin/pg_dump/pg_backup_db.c +++ b/src/bin/pg_dump/pg_backup_db.c @@ -133,8 +133,8 @@ ConnectDatabase(Archive *AHX, */ do { - const char *keywords[8]; - const char *values[8]; + const char *keywords[9]; + const char *values[9]; int i = 0; /* @@ -159,6 +159,11 @@ ConnectDatabase(Archive *AHX, } keywords[i] = "fallback_application_name"; values[i++] = progname; + if (cparams->column_encryption) + { + keywords[i] = "column_encryption"; + values[i++] = "1"; + } keywords[i] = NULL; values[i++] = NULL; Assert(i <= lengthof(keywords)); diff --git a/src/bin/pg_dump/pg_dump.c b/src/bin/pg_dump/pg_dump.c index 44d957c038..615e2a0028 100644 --- a/src/bin/pg_dump/pg_dump.c +++ b/src/bin/pg_dump/pg_dump.c @@ -54,6 +54,7 @@ #include "catalog/pg_subscription.h" #include "catalog/pg_trigger_d.h" #include "catalog/pg_type_d.h" +#include "common/colenc.h" #include "common/connect.h" #include "common/relpath.h" #include "dumputils.h" @@ -228,6 +229,8 @@ static void dumpAccessMethod(Archive *fout, const AccessMethodInfo *aminfo); static void dumpOpclass(Archive *fout, const OpclassInfo *opcinfo); static void dumpOpfamily(Archive *fout, const OpfamilyInfo *opfinfo); static void dumpCollation(Archive *fout, const CollInfo *collinfo); +static void dumpColumnEncryptionKey(Archive *fout, const CekInfo *cekinfo); +static void dumpColumnMasterKey(Archive *fout, const CmkInfo *cekinfo); static void dumpConversion(Archive *fout, const ConvInfo *convinfo); static void dumpRule(Archive *fout, const RuleInfo *rinfo); static void dumpAgg(Archive *fout, const AggInfo *agginfo); @@ -393,6 +396,7 @@ main(int argc, char **argv) {"attribute-inserts", no_argument, &dopt.column_inserts, 1}, {"binary-upgrade", no_argument, &dopt.binary_upgrade, 1}, {"column-inserts", no_argument, &dopt.column_inserts, 1}, + {"decrypt-encrypted-columns", no_argument, &dopt.cparams.column_encryption, 1}, {"disable-dollar-quoting", no_argument, &dopt.disable_dollar_quoting, 1}, {"disable-triggers", no_argument, &dopt.disable_triggers, 1}, {"enable-row-security", no_argument, &dopt.enable_row_security, 1}, @@ -685,6 +689,9 @@ main(int argc, char **argv) * --inserts are already implied above if --column-inserts or * --rows-per-insert were specified. */ + if (dopt.cparams.column_encryption && dopt.dump_inserts == 0) + pg_fatal("option --decrypt_encrypted_columns requires option --inserts, --rows-per-insert, or --column-inserts"); + if (dopt.do_nothing && dopt.dump_inserts == 0) pg_fatal("option --on-conflict-do-nothing requires option --inserts, --rows-per-insert, or --column-inserts"); @@ -1057,6 +1064,7 @@ help(const char *progname) printf(_(" -x, --no-privileges do not dump privileges (grant/revoke)\n")); printf(_(" --binary-upgrade for use by upgrade utilities only\n")); printf(_(" --column-inserts dump data as INSERT commands with column names\n")); + printf(_(" --decrypt-encrypted-columns decrypt encrypted columns in the output\n")); printf(_(" --disable-dollar-quoting disable dollar quoting, use SQL standard quoting\n")); printf(_(" --disable-triggers disable triggers during data-only restore\n")); printf(_(" --enable-row-security enable row security (dump only content user has\n" @@ -5570,6 +5578,138 @@ getCollations(Archive *fout, int *numCollations) return collinfo; } +/* + * getColumnEncryptionKeys + * get information about column encryption keys + */ +void +getColumnEncryptionKeys(Archive *fout) +{ + PQExpBuffer query; + PGresult *res; + int ntups; + CekInfo *cekinfo; + int i_tableoid; + int i_oid; + int i_cekname; + int i_cekowner; + + if (fout->remoteVersion < 160000) + return; + + query = createPQExpBuffer(); + + appendPQExpBuffer(query, + "SELECT cek.tableoid, cek.oid, cek.cekname,\n" + " cek.cekowner\n" + "FROM pg_colenckey cek"); + + res = ExecuteSqlQuery(fout, query->data, PGRES_TUPLES_OK); + + ntups = PQntuples(res); + + i_tableoid = PQfnumber(res, "tableoid"); + i_oid = PQfnumber(res, "oid"); + i_cekname = PQfnumber(res, "cekname"); + i_cekowner = PQfnumber(res, "cekowner"); + + cekinfo = pg_malloc(ntups * sizeof(CekInfo)); + + for (int i = 0; i < ntups; i++) + { + PGresult *res2; + int ntups2; + + cekinfo[i].dobj.objType = DO_CEK; + cekinfo[i].dobj.catId.tableoid = atooid(PQgetvalue(res, i, i_tableoid)); + cekinfo[i].dobj.catId.oid = atooid(PQgetvalue(res, i, i_oid)); + AssignDumpId(&cekinfo[i].dobj); + cekinfo[i].dobj.name = pg_strdup(PQgetvalue(res, i, i_cekname)); + cekinfo[i].rolname = getRoleName(PQgetvalue(res, i, i_cekowner)); + + resetPQExpBuffer(query); + appendPQExpBuffer(query, + "SELECT (SELECT cmkname FROM pg_catalog.pg_colmasterkey WHERE pg_colmasterkey.oid = ckdcmkid) AS cekcmkname,\n" + " ckdcmkalg, ckdencval\n" + "FROM pg_catalog.pg_colenckeydata\n" + "WHERE ckdcekid = %u", cekinfo[i].dobj.catId.oid); + res2 = ExecuteSqlQuery(fout, query->data, PGRES_TUPLES_OK); + ntups2 = PQntuples(res2); + cekinfo[i].numdata = ntups2; + cekinfo[i].cekcmknames = pg_malloc(sizeof(char *) * ntups2); + cekinfo[i].cekcmkalgs = pg_malloc(sizeof(int) * ntups2); + cekinfo[i].cekencvals = pg_malloc(sizeof(char *) * ntups2); + for (int j = 0; j < ntups2; j++) + { + cekinfo[i].cekcmknames[j] = pg_strdup(PQgetvalue(res2, j, PQfnumber(res2, "cekcmkname"))); + cekinfo[i].cekcmkalgs[j] = atoi(PQgetvalue(res2, j, PQfnumber(res2, "ckdcmkalg"))); + cekinfo[i].cekencvals[j] = pg_strdup(PQgetvalue(res2, j, PQfnumber(res2, "ckdencval"))); + } + PQclear(res2); + + selectDumpableObject(&(cekinfo[i].dobj), fout); + } + PQclear(res); + + destroyPQExpBuffer(query); +} + +/* + * getColumnMasterKeys + * get information about column master keys + */ +void +getColumnMasterKeys(Archive *fout) +{ + PQExpBuffer query; + PGresult *res; + int ntups; + CmkInfo *cmkinfo; + int i_tableoid; + int i_oid; + int i_cmkname; + int i_cmkowner; + int i_cmkrealm; + + if (fout->remoteVersion < 160000) + return; + + query = createPQExpBuffer(); + + appendPQExpBuffer(query, + "SELECT cmk.tableoid, cmk.oid, cmk.cmkname,\n" + " cmk.cmkowner, cmk.cmkrealm\n" + "FROM pg_colmasterkey cmk"); + + res = ExecuteSqlQuery(fout, query->data, PGRES_TUPLES_OK); + + ntups = PQntuples(res); + + i_tableoid = PQfnumber(res, "tableoid"); + i_oid = PQfnumber(res, "oid"); + i_cmkname = PQfnumber(res, "cmkname"); + i_cmkowner = PQfnumber(res, "cmkowner"); + i_cmkrealm = PQfnumber(res, "cmkrealm"); + + cmkinfo = pg_malloc(ntups * sizeof(CmkInfo)); + + for (int i = 0; i < ntups; i++) + { + cmkinfo[i].dobj.objType = DO_CMK; + cmkinfo[i].dobj.catId.tableoid = atooid(PQgetvalue(res, i, i_tableoid)); + cmkinfo[i].dobj.catId.oid = atooid(PQgetvalue(res, i, i_oid)); + AssignDumpId(&cmkinfo[i].dobj); + cmkinfo[i].dobj.name = pg_strdup(PQgetvalue(res, i, i_cmkname)); + cmkinfo[i].rolname = getRoleName(PQgetvalue(res, i, i_cmkowner)); + cmkinfo[i].cmkrealm = pg_strdup(PQgetvalue(res, i, i_cmkrealm)); + + selectDumpableObject(&(cmkinfo[i].dobj), fout); + } + PQclear(res); + + destroyPQExpBuffer(query); +} + /* * getConversions: * read all conversions in the system catalogs and return them in the @@ -8160,6 +8300,9 @@ getTableAttrs(Archive *fout, TableInfo *tblinfo, int numTables) int i_typstorage; int i_attidentity; int i_attgenerated; + int i_attcekname; + int i_attencalg; + int i_attencdet; int i_attisdropped; int i_attlen; int i_attalign; @@ -8269,17 +8412,29 @@ getTableAttrs(Archive *fout, TableInfo *tblinfo, int numTables) if (fout->remoteVersion >= 120000) appendPQExpBufferStr(q, - "a.attgenerated\n"); + "a.attgenerated,\n"); + else + appendPQExpBufferStr(q, + "'' AS attgenerated,\n"); + + if (fout->remoteVersion >= 160000) + appendPQExpBuffer(q, + "(SELECT cekname FROM pg_colenckey cek WHERE cek.oid = a.attcek) AS attcekname,\n" + "CASE atttypid WHEN %u THEN true WHEN %u THEN false END AS attencdet,\n" + "attencalg\n", + PG_ENCRYPTED_DETOID, PG_ENCRYPTED_RNDOID); else appendPQExpBufferStr(q, - "'' AS attgenerated\n"); + "NULL AS attcekname,\n" + "NULL AS attencdet,\n" + "NULL AS attencalg\n"); /* need left join to pg_type to not fail on dropped columns ... */ appendPQExpBuffer(q, "FROM unnest('%s'::pg_catalog.oid[]) AS src(tbloid)\n" "JOIN pg_catalog.pg_attribute a ON (src.tbloid = a.attrelid) " "LEFT JOIN pg_catalog.pg_type t " - "ON (a.atttypid = t.oid)\n" + "ON (CASE WHEN a.attrealtypid <> 0 THEN a.attrealtypid ELSE a.atttypid END = t.oid)\n" "WHERE a.attnum > 0::pg_catalog.int2\n" "ORDER BY a.attrelid, a.attnum", tbloids->data); @@ -8298,6 +8453,9 @@ getTableAttrs(Archive *fout, TableInfo *tblinfo, int numTables) i_typstorage = PQfnumber(res, "typstorage"); i_attidentity = PQfnumber(res, "attidentity"); i_attgenerated = PQfnumber(res, "attgenerated"); + i_attcekname = PQfnumber(res, "attcekname"); + i_attencdet = PQfnumber(res, "attencdet"); + i_attencalg = PQfnumber(res, "attencalg"); i_attisdropped = PQfnumber(res, "attisdropped"); i_attlen = PQfnumber(res, "attlen"); i_attalign = PQfnumber(res, "attalign"); @@ -8359,6 +8517,9 @@ getTableAttrs(Archive *fout, TableInfo *tblinfo, int numTables) tbinfo->typstorage = (char *) pg_malloc(numatts * sizeof(char)); tbinfo->attidentity = (char *) pg_malloc(numatts * sizeof(char)); tbinfo->attgenerated = (char *) pg_malloc(numatts * sizeof(char)); + tbinfo->attcekname = (char **) pg_malloc(numatts * sizeof(char *)); + tbinfo->attencdet = (bool *) pg_malloc(numatts * sizeof(bool)); + tbinfo->attencalg = (int *) pg_malloc(numatts * sizeof(int)); tbinfo->attisdropped = (bool *) pg_malloc(numatts * sizeof(bool)); tbinfo->attlen = (int *) pg_malloc(numatts * sizeof(int)); tbinfo->attalign = (char *) pg_malloc(numatts * sizeof(char)); @@ -8387,6 +8548,18 @@ getTableAttrs(Archive *fout, TableInfo *tblinfo, int numTables) tbinfo->attidentity[j] = *(PQgetvalue(res, r, i_attidentity)); tbinfo->attgenerated[j] = *(PQgetvalue(res, r, i_attgenerated)); tbinfo->needs_override = tbinfo->needs_override || (tbinfo->attidentity[j] == ATTRIBUTE_IDENTITY_ALWAYS); + if (!PQgetisnull(res, r, i_attcekname)) + tbinfo->attcekname[j] = pg_strdup(PQgetvalue(res, r, i_attcekname)); + else + tbinfo->attcekname[j] = NULL; + if (!PQgetisnull(res, r, i_attencdet)) + tbinfo->attencdet[j] = (PQgetvalue(res, r, i_attencdet)[0] == 't'); + else + tbinfo->attencdet[j] = 0; + if (!PQgetisnull(res, r, i_attencalg)) + tbinfo->attencalg[j] = atoi(PQgetvalue(res, r, i_attencalg)); + else + tbinfo->attencalg[j] = 0; tbinfo->attisdropped[j] = (PQgetvalue(res, r, i_attisdropped)[0] == 't'); tbinfo->attlen[j] = atoi(PQgetvalue(res, r, i_attlen)); tbinfo->attalign[j] = *(PQgetvalue(res, r, i_attalign)); @@ -9911,6 +10084,12 @@ dumpDumpableObject(Archive *fout, DumpableObject *dobj) case DO_OPFAMILY: dumpOpfamily(fout, (const OpfamilyInfo *) dobj); break; + case DO_CEK: + dumpColumnEncryptionKey(fout, (const CekInfo *) dobj); + break; + case DO_CMK: + dumpColumnMasterKey(fout, (const CmkInfo *) dobj); + break; case DO_COLLATION: dumpCollation(fout, (const CollInfo *) dobj); break; @@ -13304,6 +13483,129 @@ dumpCollation(Archive *fout, const CollInfo *collinfo) free(qcollname); } +/* + * dumpColumnEncryptionKey + * dump the definition of the given column encryption key + */ +static void +dumpColumnEncryptionKey(Archive *fout, const CekInfo *cekinfo) +{ + DumpOptions *dopt = fout->dopt; + PQExpBuffer delq; + PQExpBuffer query; + char *qcekname; + + /* Do nothing in data-only dump */ + if (dopt->dataOnly) + return; + + delq = createPQExpBuffer(); + query = createPQExpBuffer(); + + qcekname = pg_strdup(fmtId(cekinfo->dobj.name)); + + appendPQExpBuffer(delq, "DROP COLUMN ENCRYPTION KEY %s;\n", + qcekname); + + appendPQExpBuffer(query, "CREATE COLUMN ENCRYPTION KEY %s WITH VALUES ", + qcekname); + + for (int i = 0; i < cekinfo->numdata; i++) + { + appendPQExpBuffer(query, "("); + + appendPQExpBuffer(query, "column_master_key = %s, ", fmtId(cekinfo->cekcmknames[i])); + appendPQExpBuffer(query, "algorithm = '%s', ", get_cmkalg_name(cekinfo->cekcmkalgs[i])); + appendPQExpBuffer(query, "encrypted_value = "); + appendStringLiteralAH(query, cekinfo->cekencvals[i], fout); + + appendPQExpBuffer(query, ")"); + if (i < cekinfo->numdata - 1) + appendPQExpBuffer(query, ", "); + } + + appendPQExpBufferStr(query, ";\n"); + + if (cekinfo->dobj.dump & DUMP_COMPONENT_DEFINITION) + ArchiveEntry(fout, cekinfo->dobj.catId, cekinfo->dobj.dumpId, + ARCHIVE_OPTS(.tag = cekinfo->dobj.name, + .owner = cekinfo->rolname, + .description = "COLUMN ENCRYPTION KEY", + .section = SECTION_PRE_DATA, + .createStmt = query->data, + .dropStmt = delq->data)); + + if (cekinfo->dobj.dump & DUMP_COMPONENT_COMMENT) + dumpComment(fout, "COLUMN ENCRYPTION KEY", qcekname, + NULL, cekinfo->rolname, + cekinfo->dobj.catId, 0, cekinfo->dobj.dumpId); + + if (cekinfo->dobj.dump & DUMP_COMPONENT_SECLABEL) + dumpSecLabel(fout, "COLUMN ENCRYPTION KEY", qcekname, + NULL, cekinfo->rolname, + cekinfo->dobj.catId, 0, cekinfo->dobj.dumpId); + + destroyPQExpBuffer(delq); + destroyPQExpBuffer(query); + free(qcekname); +} + +/* + * dumpColumnMasterKey + * dump the definition of the given column master key + */ +static void +dumpColumnMasterKey(Archive *fout, const CmkInfo *cmkinfo) +{ + DumpOptions *dopt = fout->dopt; + PQExpBuffer delq; + PQExpBuffer query; + char *qcmkname; + + /* Do nothing in data-only dump */ + if (dopt->dataOnly) + return; + + delq = createPQExpBuffer(); + query = createPQExpBuffer(); + + qcmkname = pg_strdup(fmtId(cmkinfo->dobj.name)); + + appendPQExpBuffer(delq, "DROP COLUMN MASTER KEY %s;\n", + qcmkname); + + appendPQExpBuffer(query, "CREATE COLUMN MASTER KEY %s WITH (", + qcmkname); + + appendPQExpBuffer(query, "realm = "); + appendStringLiteralAH(query, cmkinfo->cmkrealm, fout); + + appendPQExpBufferStr(query, ");\n"); + + if (cmkinfo->dobj.dump & DUMP_COMPONENT_DEFINITION) + ArchiveEntry(fout, cmkinfo->dobj.catId, cmkinfo->dobj.dumpId, + ARCHIVE_OPTS(.tag = cmkinfo->dobj.name, + .owner = cmkinfo->rolname, + .description = "COLUMN MASTER KEY", + .section = SECTION_PRE_DATA, + .createStmt = query->data, + .dropStmt = delq->data)); + + if (cmkinfo->dobj.dump & DUMP_COMPONENT_COMMENT) + dumpComment(fout, "COLUMN MASTER KEY", qcmkname, + NULL, cmkinfo->rolname, + cmkinfo->dobj.catId, 0, cmkinfo->dobj.dumpId); + + if (cmkinfo->dobj.dump & DUMP_COMPONENT_SECLABEL) + dumpSecLabel(fout, "COLUMN MASTER KEY", qcmkname, + NULL, cmkinfo->rolname, + cmkinfo->dobj.catId, 0, cmkinfo->dobj.dumpId); + + destroyPQExpBuffer(delq); + destroyPQExpBuffer(query); + free(qcmkname); +} + /* * dumpConversion * write out a single conversion definition @@ -15387,6 +15689,22 @@ dumpTableSchema(Archive *fout, const TableInfo *tbinfo) tbinfo->atttypnames[j]); } + if (tbinfo->attcekname[j]) + { + appendPQExpBuffer(q, " ENCRYPTED WITH (column_encryption_key = %s, ", + fmtId(tbinfo->attcekname[j])); + /* + * To reduce output size, we don't print the default + * of encryption_type, but we do print the default of + * algorithm, since we might want to change to a new + * default algorithm sometime in the future. + */ + if (tbinfo->attencdet[j]) + appendPQExpBuffer(q, "encryption_type = deterministic, "); + appendPQExpBuffer(q, "algorithm = '%s')", + get_cekalg_name(tbinfo->attencalg[j])); + } + if (print_default) { if (tbinfo->attgenerated[j] == ATTRIBUTE_GENERATED_STORED) @@ -17951,6 +18269,8 @@ addBoundaryDependencies(DumpableObject **dobjs, int numObjs, case DO_ACCESS_METHOD: case DO_OPCLASS: case DO_OPFAMILY: + case DO_CEK: + case DO_CMK: case DO_COLLATION: case DO_CONVERSION: case DO_TABLE: diff --git a/src/bin/pg_dump/pg_dump.h b/src/bin/pg_dump/pg_dump.h index 436ac5bb98..0724f3ae08 100644 --- a/src/bin/pg_dump/pg_dump.h +++ b/src/bin/pg_dump/pg_dump.h @@ -47,6 +47,8 @@ typedef enum DO_ACCESS_METHOD, DO_OPCLASS, DO_OPFAMILY, + DO_CEK, + DO_CMK, DO_COLLATION, DO_CONVERSION, DO_TABLE, @@ -333,6 +335,9 @@ typedef struct _tableInfo bool *attisdropped; /* true if attr is dropped; don't dump it */ char *attidentity; char *attgenerated; + char **attcekname; + int *attencalg; + bool *attencdet; int *attlen; /* attribute length, used by binary_upgrade */ char *attalign; /* attribute align, used by binary_upgrade */ bool *attislocal; /* true if attr has local definition */ @@ -664,6 +669,30 @@ typedef struct _SubscriptionInfo char *subpublications; } SubscriptionInfo; +/* + * The CekInfo struct is used to represent column encryption key. + */ +typedef struct _CekInfo +{ + DumpableObject dobj; + const char *rolname; + int numdata; + /* The following are arrays of numdata entries each: */ + char **cekcmknames; + int *cekcmkalgs; + char **cekencvals; +} CekInfo; + +/* + * The CmkInfo struct is used to represent column master key. + */ +typedef struct _CmkInfo +{ + DumpableObject dobj; + const char *rolname; + char *cmkrealm; +} CmkInfo; + /* * common utility functions */ @@ -711,6 +740,8 @@ extern AccessMethodInfo *getAccessMethods(Archive *fout, int *numAccessMethods); extern OpclassInfo *getOpclasses(Archive *fout, int *numOpclasses); extern OpfamilyInfo *getOpfamilies(Archive *fout, int *numOpfamilies); extern CollInfo *getCollations(Archive *fout, int *numCollations); +extern void getColumnEncryptionKeys(Archive *fout); +extern void getColumnMasterKeys(Archive *fout); extern ConvInfo *getConversions(Archive *fout, int *numConversions); extern TableInfo *getTables(Archive *fout, int *numTables); extern void getOwnedSeqs(Archive *fout, TableInfo tblinfo[], int numTables); diff --git a/src/bin/pg_dump/pg_dump_sort.c b/src/bin/pg_dump/pg_dump_sort.c index 31cee46f3e..bf6446f950 100644 --- a/src/bin/pg_dump/pg_dump_sort.c +++ b/src/bin/pg_dump/pg_dump_sort.c @@ -69,6 +69,8 @@ enum dbObjectTypePriorities PRIO_TSTEMPLATE, PRIO_TSDICT, PRIO_TSCONFIG, + PRIO_CMK, + PRIO_CEK, PRIO_FDW, PRIO_FOREIGN_SERVER, PRIO_TABLE, @@ -111,6 +113,8 @@ static const int dbObjectTypePriority[] = PRIO_ACCESS_METHOD, /* DO_ACCESS_METHOD */ PRIO_OPFAMILY, /* DO_OPCLASS */ PRIO_OPFAMILY, /* DO_OPFAMILY */ + PRIO_CEK, /* DO_CEK */ + PRIO_CMK, /* DO_CMK */ PRIO_COLLATION, /* DO_COLLATION */ PRIO_CONVERSION, /* DO_CONVERSION */ PRIO_TABLE, /* DO_TABLE */ @@ -1322,6 +1326,16 @@ describeDumpableObject(DumpableObject *obj, char *buf, int bufsize) "OPERATOR FAMILY %s (ID %d OID %u)", obj->name, obj->dumpId, obj->catId.oid); return; + case DO_CEK: + snprintf(buf, bufsize, + "COLUMN ENCRYPTION KEY (ID %d OID %u)", + obj->dumpId, obj->catId.oid); + return; + case DO_CMK: + snprintf(buf, bufsize, + "COLUMN MASTER KEY (ID %d OID %u)", + obj->dumpId, obj->catId.oid); + return; case DO_COLLATION: snprintf(buf, bufsize, "COLLATION %s (ID %d OID %u)", diff --git a/src/bin/pg_dump/pg_dumpall.c b/src/bin/pg_dump/pg_dumpall.c index 7b40081678..a399ef8d58 100644 --- a/src/bin/pg_dump/pg_dumpall.c +++ b/src/bin/pg_dump/pg_dumpall.c @@ -93,6 +93,7 @@ static bool dosync = true; static int binary_upgrade = 0; static int column_inserts = 0; +static int decrypt_encrypted_columns = 0; static int disable_dollar_quoting = 0; static int disable_triggers = 0; static int if_exists = 0; @@ -154,6 +155,7 @@ main(int argc, char *argv[]) {"attribute-inserts", no_argument, &column_inserts, 1}, {"binary-upgrade", no_argument, &binary_upgrade, 1}, {"column-inserts", no_argument, &column_inserts, 1}, + {"decrypt-encrypted-columns", no_argument, &decrypt_encrypted_columns, 1}, {"disable-dollar-quoting", no_argument, &disable_dollar_quoting, 1}, {"disable-triggers", no_argument, &disable_triggers, 1}, {"exclude-database", required_argument, NULL, 6}, @@ -424,6 +426,8 @@ main(int argc, char *argv[]) appendPQExpBufferStr(pgdumpopts, " --binary-upgrade"); if (column_inserts) appendPQExpBufferStr(pgdumpopts, " --column-inserts"); + if (decrypt_encrypted_columns) + appendPQExpBufferStr(pgdumpopts, " --decrypt-encrypted-columns"); if (disable_dollar_quoting) appendPQExpBufferStr(pgdumpopts, " --disable-dollar-quoting"); if (disable_triggers) @@ -649,6 +653,7 @@ help(void) printf(_(" -x, --no-privileges do not dump privileges (grant/revoke)\n")); printf(_(" --binary-upgrade for use by upgrade utilities only\n")); printf(_(" --column-inserts dump data as INSERT commands with column names\n")); + printf(_(" --decrypt-encrypted-columns decrypt encrypted columns in the output\n")); printf(_(" --disable-dollar-quoting disable dollar quoting, use SQL standard quoting\n")); printf(_(" --disable-triggers disable triggers during data-only restore\n")); printf(_(" --exclude-database=PATTERN exclude databases whose name matches PATTERN\n")); diff --git a/src/bin/pg_dump/t/002_pg_dump.pl b/src/bin/pg_dump/t/002_pg_dump.pl index 7c3067a3f4..7b3745c018 100644 --- a/src/bin/pg_dump/t/002_pg_dump.pl +++ b/src/bin/pg_dump/t/002_pg_dump.pl @@ -645,6 +645,18 @@ unlike => { %dump_test_schema_runs, no_owner => 1, }, }, + 'ALTER COLUMN ENCRYPTION KEY cek1 OWNER TO' => { + regexp => qr/^ALTER COLUMN ENCRYPTION KEY cek1 OWNER TO .+;/m, + like => { %full_runs, section_pre_data => 1, }, + unlike => { no_owner => 1, }, + }, + + 'ALTER COLUMN MASTER KEY cmk1 OWNER TO' => { + regexp => qr/^ALTER COLUMN MASTER KEY cmk1 OWNER TO .+;/m, + like => { %full_runs, section_pre_data => 1, }, + unlike => { no_owner => 1, }, + }, + 'ALTER FOREIGN DATA WRAPPER dummy OWNER TO' => { regexp => qr/^ALTER FOREIGN DATA WRAPPER dummy OWNER TO .+;/m, like => { %full_runs, section_pre_data => 1, }, @@ -1245,6 +1257,24 @@ like => { %full_runs, section_pre_data => 1, }, }, + 'COMMENT ON COLUMN ENCRYPTION KEY cek1' => { + create_order => 55, + create_sql => 'COMMENT ON COLUMN ENCRYPTION KEY cek1 + IS \'comment on column encryption key\';', + regexp => + qr/^COMMENT ON COLUMN ENCRYPTION KEY cek1 IS 'comment on column encryption key';/m, + like => { %full_runs, section_pre_data => 1, }, + }, + + 'COMMENT ON COLUMN MASTER KEY cmk1' => { + create_order => 55, + create_sql => 'COMMENT ON COLUMN MASTER KEY cmk1 + IS \'comment on column master key\';', + regexp => + qr/^COMMENT ON COLUMN MASTER KEY cmk1 IS 'comment on column master key';/m, + like => { %full_runs, section_pre_data => 1, }, + }, + 'COMMENT ON LARGE OBJECT ...' => { create_order => 65, create_sql => 'DO $$ @@ -1663,6 +1693,24 @@ like => { %full_runs, section_pre_data => 1, }, }, + 'CREATE COLUMN ENCRYPTION KEY cek1' => { + create_order => 51, + create_sql => "CREATE COLUMN ENCRYPTION KEY cek1 WITH VALUES (column_master_key = cmk1, algorithm = 'RSAES_OAEP_SHA_1', encrypted_value = '\\xDEADBEEF');", + regexp => qr/^ + \QCREATE COLUMN ENCRYPTION KEY cek1 WITH VALUES (column_master_key = cmk1, algorithm = 'RSAES_OAEP_SHA_1', encrypted_value = \E + /xm, + like => { %full_runs, section_pre_data => 1, }, + }, + + 'CREATE COLUMN MASTER KEY cmk1' => { + create_order => 50, + create_sql => "CREATE COLUMN MASTER KEY cmk1 WITH (realm = 'myrealm');", + regexp => qr/^ + \QCREATE COLUMN MASTER KEY cmk1 WITH (realm = 'myrealm');\E + /xm, + like => { %full_runs, section_pre_data => 1, }, + }, + 'CREATE DATABASE postgres' => { regexp => qr/^ \QCREATE DATABASE postgres WITH TEMPLATE = template0 \E diff --git a/src/bin/psql/command.c b/src/bin/psql/command.c index de6a3a71f8..b68467a2df 100644 --- a/src/bin/psql/command.c +++ b/src/bin/psql/command.c @@ -814,7 +814,11 @@ exec_command_d(PsqlScanState scan_state, bool active_branch, const char *cmd) success = describeTablespaces(pattern, show_verbose); break; case 'c': - if (strncmp(cmd, "dconfig", 7) == 0) + if (strncmp(cmd, "dcek", 4) == 0) + success = listCEKs(pattern, show_verbose); + else if (strncmp(cmd, "dcmk", 4) == 0) + success = listCMKs(pattern, show_verbose); + else if (strncmp(cmd, "dconfig", 7) == 0) success = describeConfigurationParameters(pattern, show_verbose, show_system); diff --git a/src/bin/psql/describe.c b/src/bin/psql/describe.c index df166365e8..d335ee9a37 100644 --- a/src/bin/psql/describe.c +++ b/src/bin/psql/describe.c @@ -1532,7 +1532,7 @@ describeOneTableDetails(const char *schemaname, bool printTableInitialized = false; int i; char *view_def = NULL; - char *headers[12]; + char *headers[13]; PQExpBufferData title; PQExpBufferData tmpbuf; int cols; @@ -1548,6 +1548,7 @@ describeOneTableDetails(const char *schemaname, fdwopts_col = -1, attstorage_col = -1, attcompression_col = -1, + attcekname_col = -1, attstattarget_col = -1, attdescr_col = -1; int numrows; @@ -1846,7 +1847,7 @@ describeOneTableDetails(const char *schemaname, cols = 0; printfPQExpBuffer(&buf, "SELECT a.attname"); attname_col = cols++; - appendPQExpBufferStr(&buf, ",\n pg_catalog.format_type(a.atttypid, a.atttypmod)"); + appendPQExpBufferStr(&buf, ",\n pg_catalog.format_type(CASE WHEN a.attrealtypid <> 0 THEN a.attrealtypid ELSE a.atttypid END, a.atttypmod)"); atttype_col = cols++; if (show_column_details) @@ -1860,7 +1861,7 @@ describeOneTableDetails(const char *schemaname, attrdef_col = cols++; attnotnull_col = cols++; appendPQExpBufferStr(&buf, ",\n (SELECT c.collname FROM pg_catalog.pg_collation c, pg_catalog.pg_type t\n" - " WHERE c.oid = a.attcollation AND t.oid = a.atttypid AND a.attcollation <> t.typcollation) AS attcollation"); + " WHERE c.oid = a.attcollation AND t.oid = (CASE WHEN a.attrealtypid <> 0 THEN a.attrealtypid ELSE a.atttypid END) AND a.attcollation <> t.typcollation) AS attcollation"); attcoll_col = cols++; if (pset.sversion >= 100000) appendPQExpBufferStr(&buf, ",\n a.attidentity"); @@ -1911,6 +1912,15 @@ describeOneTableDetails(const char *schemaname, attcompression_col = cols++; } + /* encryption info */ + if (pset.sversion >= 160000 && + !pset.hide_column_encryption && + (tableinfo.relkind == RELKIND_RELATION)) + { + appendPQExpBufferStr(&buf, ",\n (SELECT cekname FROM pg_colenckey cek WHERE cek.oid = a.attcek) AS attcekname"); + attcekname_col = cols++; + } + /* stats target, if relevant to relkind */ if (tableinfo.relkind == RELKIND_RELATION || tableinfo.relkind == RELKIND_INDEX || @@ -2034,6 +2044,8 @@ describeOneTableDetails(const char *schemaname, headers[cols++] = gettext_noop("Storage"); if (attcompression_col >= 0) headers[cols++] = gettext_noop("Compression"); + if (attcekname_col >= 0) + headers[cols++] = gettext_noop("Encryption"); if (attstattarget_col >= 0) headers[cols++] = gettext_noop("Stats target"); if (attdescr_col >= 0) @@ -2126,6 +2138,17 @@ describeOneTableDetails(const char *schemaname, false, false); } + /* Column encryption */ + if (attcekname_col >= 0) + { + if (!PQgetisnull(res, i, attcekname_col)) + printTableAddCell(&cont, PQgetvalue(res, i, attcekname_col), + false, false); + else + printTableAddCell(&cont, "", + false, false); + } + /* Statistics target, if the relkind supports this feature */ if (attstattarget_col >= 0) printTableAddCell(&cont, PQgetvalue(res, i, attstattarget_col), @@ -4479,6 +4502,134 @@ listConversions(const char *pattern, bool verbose, bool showSystem) return true; } +/* + * \dcek + * + * Lists column encryption keys. + */ +bool +listCEKs(const char *pattern, bool verbose) +{ + PQExpBufferData buf; + PGresult *res; + printQueryOpt myopt = pset.popt; + + if (pset.sversion < 160000) + { + char sverbuf[32]; + + pg_log_error("The server (version %s) does not support column encryption.", + formatPGVersionNumber(pset.sversion, false, + sverbuf, sizeof(sverbuf))); + return true; + } + + initPQExpBuffer(&buf); + + printfPQExpBuffer(&buf, + "SELECT cekname AS \"%s\", " + "pg_catalog.pg_get_userbyid(cekowner) AS \"%s\", " + "cmkname AS \"%s\"", + gettext_noop("Name"), + gettext_noop("Owner"), + gettext_noop("Master key")); + if (verbose) + appendPQExpBuffer(&buf, + ", pg_catalog.obj_description(cek.oid, 'pg_colenckey') AS \"%s\"", + gettext_noop("Description")); + appendPQExpBufferStr(&buf, + "\nFROM pg_catalog.pg_colenckey cek " + "JOIN pg_catalog.pg_colenckeydata ckd ON (cek.oid = ckd.ckdcekid) " + "JOIN pg_catalog.pg_colmasterkey cmk ON (ckd.ckdcmkid = cmk.oid) "); + + if (!validateSQLNamePattern(&buf, pattern, false, false, + NULL, "cekname", NULL, NULL, + NULL, 1)) + { + termPQExpBuffer(&buf); + return false; + } + + appendPQExpBufferStr(&buf, "ORDER BY 1, 3"); + + res = PSQLexec(buf.data); + termPQExpBuffer(&buf); + if (!res) + return false; + + myopt.nullPrint = NULL; + myopt.title = _("List of column encryption keys"); + myopt.translate_header = true; + + printQuery(res, &myopt, pset.queryFout, false, pset.logfile); + + PQclear(res); + return true; +} + +/* + * \dcmk + * + * Lists column master keys. + */ +bool +listCMKs(const char *pattern, bool verbose) +{ + PQExpBufferData buf; + PGresult *res; + printQueryOpt myopt = pset.popt; + + if (pset.sversion < 160000) + { + char sverbuf[32]; + + pg_log_error("The server (version %s) does not support column encryption.", + formatPGVersionNumber(pset.sversion, false, + sverbuf, sizeof(sverbuf))); + return true; + } + + initPQExpBuffer(&buf); + + printfPQExpBuffer(&buf, + "SELECT cmkname AS \"%s\", " + "pg_catalog.pg_get_userbyid(cmkowner) AS \"%s\", " + "cmkrealm AS \"%s\"", + gettext_noop("Name"), + gettext_noop("Owner"), + gettext_noop("Realm")); + if (verbose) + appendPQExpBuffer(&buf, + ", pg_catalog.obj_description(oid, 'pg_colmasterkey') AS \"%s\"", + gettext_noop("Description")); + appendPQExpBufferStr(&buf, + "\nFROM pg_catalog.pg_colmasterkey "); + + if (!validateSQLNamePattern(&buf, pattern, false, false, + NULL, "cmkname", NULL, NULL, + NULL, 1)) + { + termPQExpBuffer(&buf); + return false; + } + + appendPQExpBufferStr(&buf, "ORDER BY 1"); + + res = PSQLexec(buf.data); + termPQExpBuffer(&buf); + if (!res) + return false; + + myopt.nullPrint = NULL; + myopt.title = _("List of column master keys"); + myopt.translate_header = true; + + printQuery(res, &myopt, pset.queryFout, false, pset.logfile); + + PQclear(res); + return true; +} + /* * \dconfig * diff --git a/src/bin/psql/describe.h b/src/bin/psql/describe.h index bd051e09cb..debdb60e11 100644 --- a/src/bin/psql/describe.h +++ b/src/bin/psql/describe.h @@ -76,6 +76,12 @@ extern bool listDomains(const char *pattern, bool verbose, bool showSystem); /* \dc */ extern bool listConversions(const char *pattern, bool verbose, bool showSystem); +/* \dcek */ +extern bool listCEKs(const char *pattern, bool verbose); + +/* \dcmk */ +extern bool listCMKs(const char *pattern, bool verbose); + /* \dconfig */ extern bool describeConfigurationParameters(const char *pattern, bool verbose, bool showSystem); diff --git a/src/bin/psql/help.c b/src/bin/psql/help.c index b4e0ec2687..1b9de191f6 100644 --- a/src/bin/psql/help.c +++ b/src/bin/psql/help.c @@ -252,6 +252,8 @@ slashUsage(unsigned short int pager) HELP0(" \\dAp[+] [AMPTRN [OPFPTRN]] list support functions of operator families\n"); HELP0(" \\db[+] [PATTERN] list tablespaces\n"); HELP0(" \\dc[S+] [PATTERN] list conversions\n"); + HELP0(" \\dcek[+] [PATTERN] list column encryption keys\n"); + HELP0(" \\dcmk[+] [PATTERN] list column master keys\n"); HELP0(" \\dconfig[+] [PATTERN] list configuration parameters\n"); HELP0(" \\dC[+] [PATTERN] list casts\n"); HELP0(" \\dd[S] [PATTERN] show object descriptions not displayed elsewhere\n"); @@ -413,6 +415,8 @@ helpVariables(unsigned short int pager) " true if last query failed, else false\n"); HELP0(" FETCH_COUNT\n" " the number of result rows to fetch and display at a time (0 = unlimited)\n"); + HELP0(" HIDE_COLUMN_ENCRYPTION\n" + " if set, column encryption details are not displayed\n"); HELP0(" HIDE_TABLEAM\n" " if set, table access methods are not displayed\n"); HELP0(" HIDE_TOAST_COMPRESSION\n" diff --git a/src/bin/psql/settings.h b/src/bin/psql/settings.h index 3fce71b85f..4be2179091 100644 --- a/src/bin/psql/settings.h +++ b/src/bin/psql/settings.h @@ -137,6 +137,7 @@ typedef struct _psqlSettings bool quiet; bool singleline; bool singlestep; + bool hide_column_encryption; bool hide_compression; bool hide_tableam; int fetch_count; diff --git a/src/bin/psql/startup.c b/src/bin/psql/startup.c index f5b9e268f2..0b812f3322 100644 --- a/src/bin/psql/startup.c +++ b/src/bin/psql/startup.c @@ -1188,6 +1188,13 @@ hide_compression_hook(const char *newval) &pset.hide_compression); } +static bool +hide_column_encryption_hook(const char *newval) +{ + return ParseVariableBool(newval, "HIDE_COLUMN_ENCRYPTION", + &pset.hide_column_encryption); +} + static bool hide_tableam_hook(const char *newval) { @@ -1259,6 +1266,9 @@ EstablishVariableSpace(void) SetVariableHooks(pset.vars, "SHOW_CONTEXT", show_context_substitute_hook, show_context_hook); + SetVariableHooks(pset.vars, "HIDE_COLUMN_ENCRYPTION", + bool_substitute_hook, + hide_column_encryption_hook); SetVariableHooks(pset.vars, "HIDE_TOAST_COMPRESSION", bool_substitute_hook, hide_compression_hook); diff --git a/src/bin/psql/tab-complete.c b/src/bin/psql/tab-complete.c index 2a3921937c..dc8c432450 100644 --- a/src/bin/psql/tab-complete.c +++ b/src/bin/psql/tab-complete.c @@ -1175,6 +1175,16 @@ static const VersionedQuery Query_for_list_of_subscriptions[] = { {0, NULL} }; +static const VersionedQuery Query_for_list_of_ceks[] = { + {160000, "SELECT cekname FROM pg_catalog.pg_colenckey WHERE cekname LIKE '%s'"}, + {0, NULL} +}; + +static const VersionedQuery Query_for_list_of_cmks[] = { + {160000, "SELECT cmkname FROM pg_catalog.pg_colmasterkey WHERE cmkname LIKE '%s'"}, + {0, NULL} +}; + /* * This is a list of all "things" in Pgsql, which can show up after CREATE or * DROP; and there is also a query to get a list of them. @@ -1208,6 +1218,8 @@ static const pgsql_thing_t words_after_create[] = { {"CAST", NULL, NULL, NULL}, /* Casts have complex structures for names, so * skip it */ {"COLLATION", NULL, NULL, &Query_for_list_of_collations}, + {"COLUMN ENCRYPTION KEY", NULL, NULL, NULL}, + {"COLUMN MASTER KEY KEY", NULL, NULL, NULL}, /* * CREATE CONSTRAINT TRIGGER is not supported here because it is designed @@ -1690,7 +1702,7 @@ psql_completion(const char *text, int start, int end) "\\connect", "\\conninfo", "\\C", "\\cd", "\\copy", "\\copyright", "\\crosstabview", "\\d", "\\da", "\\dA", "\\dAc", "\\dAf", "\\dAo", "\\dAp", - "\\db", "\\dc", "\\dconfig", "\\dC", "\\dd", "\\ddp", "\\dD", + "\\db", "\\dc", "\\dcek", "\\dcmk", "\\dconfig", "\\dC", "\\dd", "\\ddp", "\\dD", "\\des", "\\det", "\\deu", "\\dew", "\\dE", "\\df", "\\dF", "\\dFd", "\\dFp", "\\dFt", "\\dg", "\\di", "\\dl", "\\dL", "\\dm", "\\dn", "\\do", "\\dO", "\\dp", "\\dP", "\\dPi", "\\dPt", @@ -1907,6 +1919,22 @@ psql_completion(const char *text, int start, int end) else if (Matches("ALTER", "COLLATION", MatchAny)) COMPLETE_WITH("OWNER TO", "REFRESH VERSION", "RENAME TO", "SET SCHEMA"); + /* ALTER/DROP COLUMN ENCRYPTION KEY */ + else if (Matches("ALTER|DROP", "COLUMN", "ENCRYPTION", "KEY")) + COMPLETE_WITH_VERSIONED_QUERY(Query_for_list_of_ceks); + + /* ALTER COLUMN ENCRYPTION KEY */ + else if (Matches("ALTER", "COLUMN", "ENCRYPTION", "KEY", MatchAny)) + COMPLETE_WITH("ADD VALUE (", "DROP VALUE (", "OWNER TO", "RENAME TO"); + + /* ALTER/DROP COLUMN MASTER KEY */ + else if (Matches("ALTER|DROP", "COLUMN", "MASTER", "KEY")) + COMPLETE_WITH_VERSIONED_QUERY(Query_for_list_of_cmks); + + /* ALTER COLUMN MASTER KEY */ + else if (Matches("ALTER", "COLUMN", "MASTER", "KEY", MatchAny)) + COMPLETE_WITH("(", "OWNER TO", "RENAME TO"); + /* ALTER CONVERSION */ else if (Matches("ALTER", "CONVERSION", MatchAny)) COMPLETE_WITH("OWNER TO", "RENAME TO", "SET SCHEMA"); @@ -2828,6 +2856,26 @@ psql_completion(const char *text, int start, int end) COMPLETE_WITH("true", "false"); } + /* CREATE/ALTER/DROP COLUMN ... KEY */ + else if (Matches("CREATE|ALTER|DROP", "COLUMN")) + COMPLETE_WITH("ENCRYPTION", "MASTER"); + else if (Matches("CREATE|ALTER|DROP", "COLUMN", "ENCRYPTION|MASTER")) + COMPLETE_WITH("KEY"); + + /* CREATE COLUMN ENCRYPTION KEY */ + else if (Matches("CREATE", "COLUMN", "ENCRYPTION", "KEY", MatchAny)) + COMPLETE_WITH("WITH"); + else if (Matches("CREATE", "COLUMN", "ENCRYPTION", "KEY", MatchAny, "WITH")) + COMPLETE_WITH("VALUES"); + else if (Matches("CREATE", "COLUMN", "ENCRYPTION", "KEY", MatchAny, "WITH", "VALUES")) + COMPLETE_WITH("("); + + /* CREATE COLUMN MASTER KEY */ + else if (Matches("CREATE", "COLUMN", "MASTER", "KEY", MatchAny)) + COMPLETE_WITH("WITH"); + else if (Matches("CREATE", "COLUMN", "MASTER", "KEY", MatchAny, "WITH")) + COMPLETE_WITH("("); + /* CREATE DATABASE */ else if (Matches("CREATE", "DATABASE", MatchAny)) COMPLETE_WITH("OWNER", "TEMPLATE", "ENCODING", "TABLESPACE", @@ -3553,6 +3601,7 @@ psql_completion(const char *text, int start, int end) Matches("DROP", "ACCESS", "METHOD", MatchAny) || (Matches("DROP", "AGGREGATE|FUNCTION|PROCEDURE|ROUTINE", MatchAny, MatchAny) && ends_with(prev_wd, ')')) || + Matches("DROP", "COLUMN", "ENCRYPTION|MASTER", "KEY", MatchAny) || Matches("DROP", "EVENT", "TRIGGER", MatchAny) || Matches("DROP", "FOREIGN", "DATA", "WRAPPER", MatchAny) || Matches("DROP", "FOREIGN", "TABLE", MatchAny) || diff --git a/src/common/Makefile b/src/common/Makefile index e9af7346c9..99d9e39d3d 100644 --- a/src/common/Makefile +++ b/src/common/Makefile @@ -49,6 +49,7 @@ OBJS_COMMON = \ archive.o \ base64.o \ checksum_helper.o \ + colenc.o \ compression.o \ config_info.o \ controldata_utils.o \ diff --git a/src/common/colenc.c b/src/common/colenc.c new file mode 100644 index 0000000000..86c735878e --- /dev/null +++ b/src/common/colenc.c @@ -0,0 +1,104 @@ +/*------------------------------------------------------------------------- + * + * colenc.c + * + * Shared code for column encryption algorithms. + * + * Portions Copyright (c) 1996-2023, PostgreSQL Global Development Group + * + * IDENTIFICATION + * src/common/colenc.c + *------------------------------------------------------------------------- + */ + +#ifndef FRONTEND +#include "postgres.h" +#else +#include "postgres_fe.h" +#endif + +#include "common/colenc.h" + +int +get_cmkalg_num(const char *name) +{ + if (strcmp(name, "unspecified") == 0) + return PG_CMK_UNSPECIFIED; + else if (strcmp(name, "RSAES_OAEP_SHA_1") == 0) + return PG_CMK_RSAES_OAEP_SHA_1; + else if (strcmp(name, "RSAES_OAEP_SHA_256") == 0) + return PG_CMK_RSAES_OAEP_SHA_256; + else + return 0; +} + +const char * +get_cmkalg_name(int num) +{ + switch (num) + { + case PG_CMK_UNSPECIFIED: + return "unspecified"; + case PG_CMK_RSAES_OAEP_SHA_1: + return "RSAES_OAEP_SHA_1"; + case PG_CMK_RSAES_OAEP_SHA_256: + return "RSAES_OAEP_SHA_256"; + } + + return NULL; +} + +/* + * JSON Web Algorithms (JWA) names (RFC 7518) + * + * This is useful for some key management systems that use these names + * natively. + */ +const char * +get_cmkalg_jwa_name(int num) +{ + switch (num) + { + case PG_CMK_UNSPECIFIED: + return NULL; + case PG_CMK_RSAES_OAEP_SHA_1: + return "RSA-OAEP"; + case PG_CMK_RSAES_OAEP_SHA_256: + return "RSA-OAEP-256"; + } + + return NULL; +} + +int +get_cekalg_num(const char *name) +{ + if (strcmp(name, "AEAD_AES_128_CBC_HMAC_SHA_256") == 0) + return PG_CEK_AEAD_AES_128_CBC_HMAC_SHA_256; + else if (strcmp(name, "AEAD_AES_192_CBC_HMAC_SHA_384") == 0) + return PG_CEK_AEAD_AES_192_CBC_HMAC_SHA_384; + else if (strcmp(name, "AEAD_AES_256_CBC_HMAC_SHA_384") == 0) + return PG_CEK_AEAD_AES_256_CBC_HMAC_SHA_384; + else if (strcmp(name, "AEAD_AES_256_CBC_HMAC_SHA_512") == 0) + return PG_CEK_AEAD_AES_256_CBC_HMAC_SHA_512; + else + return 0; +} + +const char * +get_cekalg_name(int num) +{ + switch (num) + { + case PG_CEK_AEAD_AES_128_CBC_HMAC_SHA_256: + return "AEAD_AES_128_CBC_HMAC_SHA_256"; + case PG_CEK_AEAD_AES_192_CBC_HMAC_SHA_384: + return "AEAD_AES_192_CBC_HMAC_SHA_384"; + case PG_CEK_AEAD_AES_256_CBC_HMAC_SHA_384: + return "AEAD_AES_256_CBC_HMAC_SHA_384"; + case PG_CEK_AEAD_AES_256_CBC_HMAC_SHA_512: + return "AEAD_AES_256_CBC_HMAC_SHA_512"; + } + + return NULL; +} diff --git a/src/common/meson.build b/src/common/meson.build index f69d75e9c6..ed09360d40 100644 --- a/src/common/meson.build +++ b/src/common/meson.build @@ -2,6 +2,7 @@ common_sources = files( 'archive.c', 'base64.c', 'checksum_helper.c', + 'colenc.c', 'compression.c', 'controldata_utils.c', 'encnames.c', diff --git a/src/include/access/printtup.h b/src/include/access/printtup.h index 971a74cf22..db1f3b8811 100644 --- a/src/include/access/printtup.h +++ b/src/include/access/printtup.h @@ -20,6 +20,8 @@ extern DestReceiver *printtup_create_DR(CommandDest dest); extern void SetRemoteDestReceiverParams(DestReceiver *self, Portal portal); +extern void MaybeSendColumnEncryptionKeyMessage(Oid attcek); + extern void SendRowDescriptionMessage(StringInfo buf, TupleDesc typeinfo, List *targetlist, int16 *formats); diff --git a/src/include/catalog/dependency.h b/src/include/catalog/dependency.h index 98a1a84289..1a2a8177d1 100644 --- a/src/include/catalog/dependency.h +++ b/src/include/catalog/dependency.h @@ -92,6 +92,9 @@ typedef enum ObjectClass OCLASS_TYPE, /* pg_type */ OCLASS_CAST, /* pg_cast */ OCLASS_COLLATION, /* pg_collation */ + OCLASS_CEK, /* pg_colenckey */ + OCLASS_CEKDATA, /* pg_colenckeydata */ + OCLASS_CMK, /* pg_colmasterkey */ OCLASS_CONSTRAINT, /* pg_constraint */ OCLASS_CONVERSION, /* pg_conversion */ OCLASS_DEFAULT, /* pg_attrdef */ diff --git a/src/include/catalog/meson.build b/src/include/catalog/meson.build index 45ffa99692..f3a0b1cee9 100644 --- a/src/include/catalog/meson.build +++ b/src/include/catalog/meson.build @@ -63,6 +63,9 @@ catalog_headers = [ 'pg_publication_rel.h', 'pg_subscription.h', 'pg_subscription_rel.h', + 'pg_colmasterkey.h', + 'pg_colenckey.h', + 'pg_colenckeydata.h', ] bki_data = [ diff --git a/src/include/catalog/pg_amop.dat b/src/include/catalog/pg_amop.dat index 61cd591430..a0bd708132 100644 --- a/src/include/catalog/pg_amop.dat +++ b/src/include/catalog/pg_amop.dat @@ -1028,6 +1028,11 @@ amoprighttype => 'bytea', amopstrategy => '1', amopopr => '=(bytea,bytea)', amopmethod => 'hash' }, +# pg_encrypted_det_ops +{ amopfamily => 'hash/pg_encrypted_det_ops', amoplefttype => 'pg_encrypted_det', + amoprighttype => 'pg_encrypted_det', amopstrategy => '1', amopopr => '=(pg_encrypted_det,pg_encrypted_det)', + amopmethod => 'hash' }, + # xid_ops { amopfamily => 'hash/xid_ops', amoplefttype => 'xid', amoprighttype => 'xid', amopstrategy => '1', amopopr => '=(xid,xid)', amopmethod => 'hash' }, diff --git a/src/include/catalog/pg_amproc.dat b/src/include/catalog/pg_amproc.dat index 4cc129bebd..dddb27113f 100644 --- a/src/include/catalog/pg_amproc.dat +++ b/src/include/catalog/pg_amproc.dat @@ -402,6 +402,11 @@ { amprocfamily => 'hash/bytea_ops', amproclefttype => 'bytea', amprocrighttype => 'bytea', amprocnum => '2', amproc => 'hashvarlenaextended' }, +{ amprocfamily => 'hash/pg_encrypted_det_ops', amproclefttype => 'pg_encrypted_det', + amprocrighttype => 'pg_encrypted_det', amprocnum => '1', amproc => 'hashvarlena' }, +{ amprocfamily => 'hash/pg_encrypted_det_ops', amproclefttype => 'pg_encrypted_det', + amprocrighttype => 'pg_encrypted_det', amprocnum => '2', + amproc => 'hashvarlenaextended' }, { amprocfamily => 'hash/xid_ops', amproclefttype => 'xid', amprocrighttype => 'xid', amprocnum => '1', amproc => 'hashint4' }, { amprocfamily => 'hash/xid_ops', amproclefttype => 'xid', diff --git a/src/include/catalog/pg_attribute.h b/src/include/catalog/pg_attribute.h index 053294c99f..4741b22814 100644 --- a/src/include/catalog/pg_attribute.h +++ b/src/include/catalog/pg_attribute.h @@ -164,6 +164,15 @@ CATALOG(pg_attribute,1249,AttributeRelationId) BKI_BOOTSTRAP BKI_ROWTYPE_OID(75, */ bool attislocal BKI_DEFAULT(t); + /* column encryption key */ + Oid attcek BKI_DEFAULT(0) BKI_LOOKUP_OPT(pg_colenckey); + + /* real type if encrypted */ + Oid attrealtypid BKI_DEFAULT(0) BKI_LOOKUP_OPT(pg_type); + + /* encryption algorithm (PG_CEK_* values) */ + int32 attencalg BKI_DEFAULT(0); + /* Number of times inherited from direct parent relation(s) */ int32 attinhcount BKI_DEFAULT(0); diff --git a/src/include/catalog/pg_colenckey.h b/src/include/catalog/pg_colenckey.h new file mode 100644 index 0000000000..d8c605dbc7 --- /dev/null +++ b/src/include/catalog/pg_colenckey.h @@ -0,0 +1,40 @@ +/*------------------------------------------------------------------------- + * + * pg_colenckey.h + * definition of the "column encryption key" system catalog + * + * Portions Copyright (c) 1996-2023, PostgreSQL Global Development Group + * Portions Copyright (c) 1994, Regents of the University of California + * + * src/include/catalog/pg_colenkey.h + * + * NOTES + * The Catalog.pm module reads this file and derives schema + * information. + * + *------------------------------------------------------------------------- + */ +#ifndef PG_COLENCKEY_H +#define PG_COLENCKEY_H + +#include "catalog/genbki.h" +#include "catalog/pg_colenckey_d.h" + +/* ---------------- + * pg_colenckey definition. cpp turns this into + * typedef struct FormData_pg_colenckey + * ---------------- + */ +CATALOG(pg_colenckey,8234,ColumnEncKeyRelationId) +{ + Oid oid; + NameData cekname; + Oid cekowner BKI_LOOKUP(pg_authid); +} FormData_pg_colenckey; + +typedef FormData_pg_colenckey *Form_pg_colenckey; + +DECLARE_UNIQUE_INDEX_PKEY(pg_colenckey_oid_index, 8240, ColumnEncKeyOidIndexId, on pg_colenckey using btree(oid oid_ops)); +DECLARE_UNIQUE_INDEX(pg_colenckey_cekname_index, 8242, ColumnEncKeyNameIndexId, on pg_colenckey using btree(cekname name_ops)); + +#endif diff --git a/src/include/catalog/pg_colenckeydata.h b/src/include/catalog/pg_colenckeydata.h new file mode 100644 index 0000000000..c88e7e65ad --- /dev/null +++ b/src/include/catalog/pg_colenckeydata.h @@ -0,0 +1,46 @@ +/*------------------------------------------------------------------------- + * + * pg_colenckeydata.h + * definition of the "column encryption key data" system catalog + * + * Portions Copyright (c) 1996-2023, PostgreSQL Global Development Group + * Portions Copyright (c) 1994, Regents of the University of California + * + * src/include/catalog/pg_colenkeydata.h + * + * NOTES + * The Catalog.pm module reads this file and derives schema + * information. + * + *------------------------------------------------------------------------- + */ +#ifndef PG_COLENCKEYDATA_H +#define PG_COLENCKEYDATA_H + +#include "catalog/genbki.h" +#include "catalog/pg_colenckeydata_d.h" + +/* ---------------- + * pg_colenckeydata definition. cpp turns this into + * typedef struct FormData_pg_colenckeydata + * ---------------- + */ +CATALOG(pg_colenckeydata,8250,ColumnEncKeyDataRelationId) +{ + Oid oid; + Oid ckdcekid BKI_LOOKUP(pg_colenckey); + Oid ckdcmkid BKI_LOOKUP(pg_colmasterkey); + int32 ckdcmkalg; /* PG_CMK_* values */ +#ifdef CATALOG_VARLEN /* variable-length fields start here */ + bytea ckdencval BKI_FORCE_NOT_NULL; +#endif +} FormData_pg_colenckeydata; + +typedef FormData_pg_colenckeydata *Form_pg_colenckeydata; + +DECLARE_TOAST(pg_colenckeydata, 8237, 8238); + +DECLARE_UNIQUE_INDEX_PKEY(pg_colenckeydata_oid_index, 8251, ColumnEncKeyDataOidIndexId, on pg_colenckeydata using btree(oid oid_ops)); +DECLARE_UNIQUE_INDEX(pg_colenckeydata_ckdcekid_ckdcmkid_index, 8252, ColumnEncKeyCekidCmkidIndexId, on pg_colenckeydata using btree(ckdcekid oid_ops, ckdcmkid oid_ops)); + +#endif diff --git a/src/include/catalog/pg_colmasterkey.h b/src/include/catalog/pg_colmasterkey.h new file mode 100644 index 0000000000..0d248da0a4 --- /dev/null +++ b/src/include/catalog/pg_colmasterkey.h @@ -0,0 +1,45 @@ +/*------------------------------------------------------------------------- + * + * pg_colmasterkey.h + * definition of the "column master key" system catalog + * + * Portions Copyright (c) 1996-2023, PostgreSQL Global Development Group + * Portions Copyright (c) 1994, Regents of the University of California + * + * src/include/catalog/pg_colmasterkey.h + * + * NOTES + * The Catalog.pm module reads this file and derives schema + * information. + * + *------------------------------------------------------------------------- + */ +#ifndef PG_COLMASTERKEY_H +#define PG_COLMASTERKEY_H + +#include "catalog/genbki.h" +#include "catalog/pg_colmasterkey_d.h" + +/* ---------------- + * pg_colmasterkey definition. cpp turns this into + * typedef struct FormData_pg_colmasterkey + * ---------------- + */ +CATALOG(pg_colmasterkey,8233,ColumnMasterKeyRelationId) +{ + Oid oid; + NameData cmkname; + Oid cmkowner BKI_LOOKUP(pg_authid); +#ifdef CATALOG_VARLEN /* variable-length fields start here */ + text cmkrealm BKI_FORCE_NOT_NULL; +#endif +} FormData_pg_colmasterkey; + +typedef FormData_pg_colmasterkey *Form_pg_colmasterkey; + +DECLARE_TOAST(pg_colmasterkey, 8235, 8236); + +DECLARE_UNIQUE_INDEX_PKEY(pg_colmasterkey_oid_index, 8239, ColumnMasterKeyOidIndexId, on pg_colmasterkey using btree(oid oid_ops)); +DECLARE_UNIQUE_INDEX(pg_colmasterkey_cmkname_index, 8241, ColumnMasterKeyNameIndexId, on pg_colmasterkey using btree(cmkname name_ops)); + +#endif diff --git a/src/include/catalog/pg_opclass.dat b/src/include/catalog/pg_opclass.dat index dbcae7ffdd..0ca401ffe4 100644 --- a/src/include/catalog/pg_opclass.dat +++ b/src/include/catalog/pg_opclass.dat @@ -166,6 +166,8 @@ opcintype => 'bool' }, { opcmethod => 'hash', opcname => 'bytea_ops', opcfamily => 'hash/bytea_ops', opcintype => 'bytea' }, +{ opcmethod => 'hash', opcname => 'pg_encrypted_det_ops', opcfamily => 'hash/pg_encrypted_det_ops', + opcintype => 'pg_encrypted_det' }, { opcmethod => 'btree', opcname => 'tid_ops', opcfamily => 'btree/tid_ops', opcintype => 'tid' }, { opcmethod => 'hash', opcname => 'xid_ops', opcfamily => 'hash/xid_ops', diff --git a/src/include/catalog/pg_operator.dat b/src/include/catalog/pg_operator.dat index bc5f8213f3..4737a7f9ed 100644 --- a/src/include/catalog/pg_operator.dat +++ b/src/include/catalog/pg_operator.dat @@ -3458,4 +3458,14 @@ oprcode => 'multirange_after_multirange', oprrest => 'multirangesel', oprjoin => 'scalargtjoinsel' }, +{ oid => '8247', descr => 'equal', + oprname => '=', oprcanmerge => 'f', oprcanhash => 't', oprleft => 'pg_encrypted_det', + oprright => 'pg_encrypted_det', oprresult => 'bool', oprcom => '=(pg_encrypted_det,pg_encrypted_det)', + oprnegate => '<>(pg_encrypted_det,pg_encrypted_det)', oprcode => 'pg_encrypted_det_eq', oprrest => 'eqsel', + oprjoin => 'eqjoinsel' }, +{ oid => '8248', descr => 'not equal', + oprname => '<>', oprleft => 'pg_encrypted_det', oprright => 'pg_encrypted_det', oprresult => 'bool', + oprcom => '<>(pg_encrypted_det,pg_encrypted_det)', oprnegate => '=(pg_encrypted_det,pg_encrypted_det)', + oprcode => 'pg_encrypted_det_ne', oprrest => 'neqsel', oprjoin => 'neqjoinsel' }, + ] diff --git a/src/include/catalog/pg_opfamily.dat b/src/include/catalog/pg_opfamily.dat index b3b6a7e616..5343580b06 100644 --- a/src/include/catalog/pg_opfamily.dat +++ b/src/include/catalog/pg_opfamily.dat @@ -108,6 +108,8 @@ opfmethod => 'hash', opfname => 'bool_ops' }, { oid => '2223', opfmethod => 'hash', opfname => 'bytea_ops' }, +{ oid => '8249', + opfmethod => 'hash', opfname => 'pg_encrypted_det_ops' }, { oid => '2789', opfmethod => 'btree', opfname => 'tid_ops' }, { oid => '2225', diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat index 98d90d9338..7a46aab026 100644 --- a/src/include/catalog/pg_proc.dat +++ b/src/include/catalog/pg_proc.dat @@ -8089,9 +8089,9 @@ proname => 'pg_prepared_statement', prorows => '1000', proretset => 't', provolatile => 's', proparallel => 'r', prorettype => 'record', proargtypes => '', - proallargtypes => '{text,text,timestamptz,_regtype,_regtype,bool,int8,int8}', - proargmodes => '{o,o,o,o,o,o,o,o}', - proargnames => '{name,statement,prepare_time,parameter_types,result_types,from_sql,generic_plans,custom_plans}', + proallargtypes => '{text,text,timestamptz,_regtype,_regclass,_int2,_regtype,bool,int8,int8}', + proargmodes => '{o,o,o,o,o,o,o,o,o,o}', + proargnames => '{name,statement,prepare_time,parameter_types,parameter_orig_tables,parameter_orig_columns,result_types,from_sql,generic_plans,custom_plans}', prosrc => 'pg_prepared_statement' }, { oid => '2511', descr => 'get the open cursors for this session', proname => 'pg_cursor', prorows => '1000', proretset => 't', @@ -11876,4 +11876,37 @@ prorettype => 'bytea', proargtypes => 'pg_brin_minmax_multi_summary', prosrc => 'brin_minmax_multi_summary_send' }, +{ oid => '8253', descr => 'I/O', + proname => 'pg_encrypted_det_in', prorettype => 'pg_encrypted_det', proargtypes => 'cstring', + prosrc => 'pg_encrypted_in' }, +{ oid => '8254', descr => 'I/O', + proname => 'pg_encrypted_det_out', prorettype => 'cstring', proargtypes => 'pg_encrypted_det', + prosrc => 'pg_encrypted_out' }, +{ oid => '8255', descr => 'I/O', + proname => 'pg_encrypted_det_recv', prorettype => 'pg_encrypted_det', proargtypes => 'internal', + prosrc => 'pg_encrypted_recv' }, +{ oid => '8256', descr => 'I/O', + proname => 'pg_encrypted_det_send', prorettype => 'bytea', proargtypes => 'pg_encrypted_det', + prosrc => 'pg_encrypted_send' }, + +{ oid => '8257', descr => 'I/O', + proname => 'pg_encrypted_rnd_in', prorettype => 'pg_encrypted_rnd', proargtypes => 'cstring', + prosrc => 'pg_encrypted_in' }, +{ oid => '8258', descr => 'I/O', + proname => 'pg_encrypted_rnd_out', prorettype => 'cstring', proargtypes => 'pg_encrypted_rnd', + prosrc => 'pg_encrypted_out' }, +{ oid => '8259', descr => 'I/O', + proname => 'pg_encrypted_rnd_recv', prorettype => 'pg_encrypted_rnd', proargtypes => 'internal', + prosrc => 'pg_encrypted_recv' }, +{ oid => '8260', descr => 'I/O', + proname => 'pg_encrypted_rnd_send', prorettype => 'bytea', proargtypes => 'pg_encrypted_rnd', + prosrc => 'pg_encrypted_send' }, + +{ oid => '8245', + proname => 'pg_encrypted_det_eq', proleakproof => 't', prorettype => 'bool', + proargtypes => 'pg_encrypted_det pg_encrypted_det', prosrc => 'byteaeq' }, +{ oid => '8246', + proname => 'pg_encrypted_det_ne', proleakproof => 't', prorettype => 'bool', + proargtypes => 'pg_encrypted_det pg_encrypted_det', prosrc => 'byteane' }, + ] diff --git a/src/include/catalog/pg_type.dat b/src/include/catalog/pg_type.dat index 0763dfde39..462adc5b21 100644 --- a/src/include/catalog/pg_type.dat +++ b/src/include/catalog/pg_type.dat @@ -692,4 +692,16 @@ typreceive => 'brin_minmax_multi_summary_recv', typsend => 'brin_minmax_multi_summary_send', typalign => 'i', typstorage => 'x', typcollation => 'default' }, + +{ oid => '8243', descr => 'encrypted column (deterministic)', + typname => 'pg_encrypted_det', typlen => '-1', typbyval => 'f', typtype => 'b', + typcategory => 'Y', typinput => 'pg_encrypted_det_in', typoutput => 'pg_encrypted_det_out', + typreceive => 'pg_encrypted_det_recv', typsend => 'pg_encrypted_det_send', typalign => 'i', + typstorage => 'e' }, +{ oid => '8244', descr => 'encrypted column (randomized)', + typname => 'pg_encrypted_rnd', typlen => '-1', typbyval => 'f', typtype => 'b', + typcategory => 'Y', typinput => 'pg_encrypted_rnd_in', typoutput => 'pg_encrypted_rnd_out', + typreceive => 'pg_encrypted_rnd_recv', typsend => 'pg_encrypted_rnd_send', typalign => 'i', + typstorage => 'e' }, + ] diff --git a/src/include/catalog/pg_type.h b/src/include/catalog/pg_type.h index 48a2559137..c1d30903b5 100644 --- a/src/include/catalog/pg_type.h +++ b/src/include/catalog/pg_type.h @@ -294,6 +294,7 @@ DECLARE_UNIQUE_INDEX(pg_type_typname_nsp_index, 2704, TypeNameNspIndexId, on pg_ #define TYPCATEGORY_USER 'U' #define TYPCATEGORY_BITSTRING 'V' /* er ... "varbit"? */ #define TYPCATEGORY_UNKNOWN 'X' +#define TYPCATEGORY_ENCRYPTED 'Y' #define TYPCATEGORY_INTERNAL 'Z' #define TYPALIGN_CHAR 'c' /* char alignment (i.e. unaligned) */ diff --git a/src/include/commands/colenccmds.h b/src/include/commands/colenccmds.h new file mode 100644 index 0000000000..7127e0ca5e --- /dev/null +++ b/src/include/commands/colenccmds.h @@ -0,0 +1,26 @@ +/*------------------------------------------------------------------------- + * + * colenccmds.h + * prototypes for colenccmds.c. + * + * + * Portions Copyright (c) 1996-2023, PostgreSQL Global Development Group + * Portions Copyright (c) 1994, Regents of the University of California + * + * src/include/commands/colenccmds.h + * + *------------------------------------------------------------------------- + */ + +#ifndef COLENCCMDS_H +#define COLENCCMDS_H + +#include "catalog/objectaddress.h" +#include "parser/parse_node.h" + +extern ObjectAddress CreateCEK(ParseState *pstate, DefineStmt *stmt); +extern ObjectAddress AlterColumnEncryptionKey(ParseState *pstate, AlterColumnEncryptionKeyStmt *stmt); +extern ObjectAddress CreateCMK(ParseState *pstate, DefineStmt *stmt); +extern ObjectAddress AlterColumnMasterKey(ParseState *pstate, AlterColumnMasterKeyStmt *stmt); + +#endif /* COLENCCMDS_H */ diff --git a/src/include/common/colenc.h b/src/include/common/colenc.h new file mode 100644 index 0000000000..212587d222 --- /dev/null +++ b/src/include/common/colenc.h @@ -0,0 +1,51 @@ +/*------------------------------------------------------------------------- + * + * colenc.h + * + * Shared definitions for column encryption algorithms. + * + * Portions Copyright (c) 1996-2023, PostgreSQL Global Development Group + * + * IDENTIFICATION + * src/include/common/colenc.h + *------------------------------------------------------------------------- + */ + +#ifndef COMMON_COLENC_H +#define COMMON_COLENC_H + +/* + * Constants for CMK and CEK algorithms. Note that these are part of the + * protocol. In either case, don't assign zero, so that that can be used as + * an invalid value. + * + * Names should use IANA-style capitalization and punctuation ("LIKE_THIS"). + * + * When making changes, also update protocol.sgml. + */ + +#define PG_CMK_UNSPECIFIED 1 +#define PG_CMK_RSAES_OAEP_SHA_1 2 +#define PG_CMK_RSAES_OAEP_SHA_256 3 + +/* + * These algorithms are part of the RFC 5116 realm of AEAD algorithms (even + * though they never became an official IETF standard). So for propriety, we + * use "private use" numbers from + * . + */ +#define PG_CEK_AEAD_AES_128_CBC_HMAC_SHA_256 32768 +#define PG_CEK_AEAD_AES_192_CBC_HMAC_SHA_384 32769 +#define PG_CEK_AEAD_AES_256_CBC_HMAC_SHA_384 32770 +#define PG_CEK_AEAD_AES_256_CBC_HMAC_SHA_512 32771 + +/* + * Functions to convert between names and numbers + */ +extern int get_cmkalg_num(const char *name); +extern const char *get_cmkalg_name(int num); +extern const char *get_cmkalg_jwa_name(int num); +extern int get_cekalg_num(const char *name); +extern const char *get_cekalg_name(int num); + +#endif diff --git a/src/include/libpq/libpq-be.h b/src/include/libpq/libpq-be.h index 6d452ec6d9..e32c7779c9 100644 --- a/src/include/libpq/libpq-be.h +++ b/src/include/libpq/libpq-be.h @@ -164,6 +164,7 @@ typedef struct Port */ char *database_name; char *user_name; + bool column_encryption_enabled; char *cmdline_options; List *guc_options; diff --git a/src/include/nodes/parsenodes.h b/src/include/nodes/parsenodes.h index 34bc640ff2..713789bf1b 100644 --- a/src/include/nodes/parsenodes.h +++ b/src/include/nodes/parsenodes.h @@ -690,6 +690,7 @@ typedef struct ColumnDef char *colname; /* name of column */ TypeName *typeName; /* type of column */ char *compression; /* compression method for column */ + List *encryption; /* encryption info for column */ int inhcount; /* number of times column is inherited */ bool is_local; /* column has local (non-inherited) def'n */ bool is_not_null; /* NOT NULL constraint specified? */ @@ -1893,6 +1894,9 @@ typedef enum ObjectType OBJECT_CAST, OBJECT_COLUMN, OBJECT_COLLATION, + OBJECT_CEK, + OBJECT_CEKDATA, + OBJECT_CMK, OBJECT_CONVERSION, OBJECT_DATABASE, OBJECT_DEFAULT, @@ -2080,6 +2084,31 @@ typedef struct AlterCollationStmt } AlterCollationStmt; +/* ---------------------- + * Alter Column Encryption Key + * ---------------------- + */ +typedef struct AlterColumnEncryptionKeyStmt +{ + NodeTag type; + char *cekname; + bool isDrop; /* ADD or DROP the items? */ + List *definition; +} AlterColumnEncryptionKeyStmt; + + +/* ---------------------- + * Alter Column Master Key + * ---------------------- + */ +typedef struct AlterColumnMasterKeyStmt +{ + NodeTag type; + char *cmkname; + List *definition; +} AlterColumnMasterKeyStmt; + + /* ---------------------- * Alter Domain * diff --git a/src/include/parser/analyze.h b/src/include/parser/analyze.h index 3d3a5918c2..6c2866d19f 100644 --- a/src/include/parser/analyze.h +++ b/src/include/parser/analyze.h @@ -28,7 +28,9 @@ extern PGDLLIMPORT post_parse_analyze_hook_type post_parse_analyze_hook; extern Query *parse_analyze_fixedparams(RawStmt *parseTree, const char *sourceText, const Oid *paramTypes, int numParams, QueryEnvironment *queryEnv); extern Query *parse_analyze_varparams(RawStmt *parseTree, const char *sourceText, - Oid **paramTypes, int *numParams, QueryEnvironment *queryEnv); + Oid **paramTypes, int *numParams, + Oid **paramOrigTbls, AttrNumber **paramOrigCols, + QueryEnvironment *queryEnv); extern Query *parse_analyze_withcb(RawStmt *parseTree, const char *sourceText, ParserSetupHook parserSetup, void *parserSetupArg, diff --git a/src/include/parser/kwlist.h b/src/include/parser/kwlist.h index 957ee18d84..a6084574c5 100644 --- a/src/include/parser/kwlist.h +++ b/src/include/parser/kwlist.h @@ -149,6 +149,7 @@ PG_KEYWORD("else", ELSE, RESERVED_KEYWORD, BARE_LABEL) PG_KEYWORD("enable", ENABLE_P, UNRESERVED_KEYWORD, BARE_LABEL) PG_KEYWORD("encoding", ENCODING, UNRESERVED_KEYWORD, BARE_LABEL) PG_KEYWORD("encrypted", ENCRYPTED, UNRESERVED_KEYWORD, BARE_LABEL) +PG_KEYWORD("encryption", ENCRYPTION, UNRESERVED_KEYWORD, BARE_LABEL) PG_KEYWORD("end", END_P, RESERVED_KEYWORD, BARE_LABEL) PG_KEYWORD("enum", ENUM_P, UNRESERVED_KEYWORD, BARE_LABEL) PG_KEYWORD("escape", ESCAPE, UNRESERVED_KEYWORD, BARE_LABEL) @@ -250,6 +251,7 @@ PG_KEYWORD("lock", LOCK_P, UNRESERVED_KEYWORD, BARE_LABEL) PG_KEYWORD("locked", LOCKED, UNRESERVED_KEYWORD, BARE_LABEL) PG_KEYWORD("logged", LOGGED, UNRESERVED_KEYWORD, BARE_LABEL) PG_KEYWORD("mapping", MAPPING, UNRESERVED_KEYWORD, BARE_LABEL) +PG_KEYWORD("master", MASTER, UNRESERVED_KEYWORD, BARE_LABEL) PG_KEYWORD("match", MATCH, UNRESERVED_KEYWORD, BARE_LABEL) PG_KEYWORD("matched", MATCHED, UNRESERVED_KEYWORD, BARE_LABEL) PG_KEYWORD("materialized", MATERIALIZED, UNRESERVED_KEYWORD, BARE_LABEL) diff --git a/src/include/parser/parse_node.h b/src/include/parser/parse_node.h index 3fd56ceccd..15d7feefac 100644 --- a/src/include/parser/parse_node.h +++ b/src/include/parser/parse_node.h @@ -93,6 +93,7 @@ typedef Node *(*ParseParamRefHook) (ParseState *pstate, ParamRef *pref); typedef Node *(*CoerceParamHook) (ParseState *pstate, Param *param, Oid targetTypeId, int32 targetTypeMod, int location); +typedef void (*ParamAssignOrigHook) (ParseState *pstate, Param *param, Oid origtbl, AttrNumber origcol); /* @@ -227,6 +228,7 @@ struct ParseState PostParseColumnRefHook p_post_columnref_hook; ParseParamRefHook p_paramref_hook; CoerceParamHook p_coerce_param_hook; + ParamAssignOrigHook p_param_assign_orig_hook; void *p_ref_hook_state; /* common passthrough link for above */ }; diff --git a/src/include/parser/parse_param.h b/src/include/parser/parse_param.h index df1ee660d8..da202b28a7 100644 --- a/src/include/parser/parse_param.h +++ b/src/include/parser/parse_param.h @@ -18,7 +18,8 @@ extern void setup_parse_fixed_parameters(ParseState *pstate, const Oid *paramTypes, int numParams); extern void setup_parse_variable_parameters(ParseState *pstate, - Oid **paramTypes, int *numParams); + Oid **paramTypes, int *numParams, + Oid **paramOrigTbls, AttrNumber **paramOrigCols); extern void check_variable_parameters(ParseState *pstate, Query *query); extern bool query_contains_extern_params(Query *query); diff --git a/src/include/tcop/cmdtaglist.h b/src/include/tcop/cmdtaglist.h index 9e94f44c5f..d82a2e1171 100644 --- a/src/include/tcop/cmdtaglist.h +++ b/src/include/tcop/cmdtaglist.h @@ -29,6 +29,8 @@ PG_CMDTAG(CMDTAG_ALTER_ACCESS_METHOD, "ALTER ACCESS METHOD", true, false, false) PG_CMDTAG(CMDTAG_ALTER_AGGREGATE, "ALTER AGGREGATE", true, false, false) PG_CMDTAG(CMDTAG_ALTER_CAST, "ALTER CAST", true, false, false) PG_CMDTAG(CMDTAG_ALTER_COLLATION, "ALTER COLLATION", true, false, false) +PG_CMDTAG(CMDTAG_ALTER_COLUMN_ENCRYPTION_KEY, "ALTER COLUMN ENCRYPTION KEY", true, false, false) +PG_CMDTAG(CMDTAG_ALTER_COLUMN_MASTER_KEY, "ALTER COLUMN MASTER KEY", true, false, false) PG_CMDTAG(CMDTAG_ALTER_CONSTRAINT, "ALTER CONSTRAINT", true, false, false) PG_CMDTAG(CMDTAG_ALTER_CONVERSION, "ALTER CONVERSION", true, false, false) PG_CMDTAG(CMDTAG_ALTER_DATABASE, "ALTER DATABASE", false, false, false) @@ -86,6 +88,8 @@ PG_CMDTAG(CMDTAG_CREATE_ACCESS_METHOD, "CREATE ACCESS METHOD", true, false, fals PG_CMDTAG(CMDTAG_CREATE_AGGREGATE, "CREATE AGGREGATE", true, false, false) PG_CMDTAG(CMDTAG_CREATE_CAST, "CREATE CAST", true, false, false) PG_CMDTAG(CMDTAG_CREATE_COLLATION, "CREATE COLLATION", true, false, false) +PG_CMDTAG(CMDTAG_CREATE_COLUMN_ENCRYPTION_KEY, "CREATE COLUMN ENCRYPTION KEY", true, false, false) +PG_CMDTAG(CMDTAG_CREATE_COLUMN_MASTER_KEY, "CREATE COLUMN MASTER KEY", true, false, false) PG_CMDTAG(CMDTAG_CREATE_CONSTRAINT, "CREATE CONSTRAINT", true, false, false) PG_CMDTAG(CMDTAG_CREATE_CONVERSION, "CREATE CONVERSION", true, false, false) PG_CMDTAG(CMDTAG_CREATE_DATABASE, "CREATE DATABASE", false, false, false) @@ -138,6 +142,8 @@ PG_CMDTAG(CMDTAG_DROP_ACCESS_METHOD, "DROP ACCESS METHOD", true, false, false) PG_CMDTAG(CMDTAG_DROP_AGGREGATE, "DROP AGGREGATE", true, false, false) PG_CMDTAG(CMDTAG_DROP_CAST, "DROP CAST", true, false, false) PG_CMDTAG(CMDTAG_DROP_COLLATION, "DROP COLLATION", true, false, false) +PG_CMDTAG(CMDTAG_DROP_COLUMN_ENCRYPTION_KEY, "DROP COLUMN ENCRYPTION KEY", true, false, false) +PG_CMDTAG(CMDTAG_DROP_COLUMN_MASTER_KEY, "DROP COLUMN MASTER KEY", true, false, false) PG_CMDTAG(CMDTAG_DROP_CONSTRAINT, "DROP CONSTRAINT", true, false, false) PG_CMDTAG(CMDTAG_DROP_CONVERSION, "DROP CONVERSION", true, false, false) PG_CMDTAG(CMDTAG_DROP_DATABASE, "DROP DATABASE", false, false, false) diff --git a/src/include/tcop/tcopprot.h b/src/include/tcop/tcopprot.h index 5d34978f32..7502d71b0d 100644 --- a/src/include/tcop/tcopprot.h +++ b/src/include/tcop/tcopprot.h @@ -53,6 +53,8 @@ extern List *pg_analyze_and_rewrite_varparams(RawStmt *parsetree, const char *query_string, Oid **paramTypes, int *numParams, + Oid **paramOrigTbls, + AttrNumber **paramOrigCols, QueryEnvironment *queryEnv); extern List *pg_analyze_and_rewrite_withcb(RawStmt *parsetree, const char *query_string, diff --git a/src/include/utils/lsyscache.h b/src/include/utils/lsyscache.h index 50f0288305..7258d40077 100644 --- a/src/include/utils/lsyscache.h +++ b/src/include/utils/lsyscache.h @@ -163,6 +163,7 @@ extern bool type_is_rowtype(Oid typid); extern bool type_is_enum(Oid typid); extern bool type_is_range(Oid typid); extern bool type_is_multirange(Oid typid); +extern bool type_is_encrypted(Oid typid); extern void get_type_category_preferred(Oid typid, char *typcategory, bool *typispreferred); @@ -202,6 +203,11 @@ extern Oid get_publication_oid(const char *pubname, bool missing_ok); extern char *get_publication_name(Oid pubid, bool missing_ok); extern Oid get_subscription_oid(const char *subname, bool missing_ok); extern char *get_subscription_name(Oid subid, bool missing_ok); +extern Oid get_cek_oid(const char *cekname, bool missing_ok); +extern char *get_cek_name(Oid cekid, bool missing_ok); +extern Oid get_cekdata_oid(Oid cekid, Oid cmkid, bool missing_ok); +extern Oid get_cmk_oid(const char *cmkname, bool missing_ok); +extern char *get_cmk_name(Oid cmkid, bool missing_ok); #define type_is_array(typid) (get_element_type(typid) != InvalidOid) /* type_is_array_domain accepts both plain arrays and domains over arrays */ diff --git a/src/include/utils/plancache.h b/src/include/utils/plancache.h index 0499635f59..9a7cf794ce 100644 --- a/src/include/utils/plancache.h +++ b/src/include/utils/plancache.h @@ -101,6 +101,10 @@ typedef struct CachedPlanSource CommandTag commandTag; /* 'nuff said */ Oid *param_types; /* array of parameter type OIDs, or NULL */ int num_params; /* length of param_types array */ + Oid *param_origtbls; /* array of underlying tables of parameters, + * or NULL */ + AttrNumber *param_origcols; /* array of underlying columns of parameters, + * or NULL */ ParserSetupHook parserSetup; /* alternative parameter spec method */ void *parserSetupArg; int cursor_options; /* cursor options used for planning */ @@ -199,6 +203,8 @@ extern void CompleteCachedPlan(CachedPlanSource *plansource, MemoryContext querytree_context, Oid *param_types, int num_params, + Oid *param_origtbls, + AttrNumber *param_origcols, ParserSetupHook parserSetup, void *parserSetupArg, int cursor_options, diff --git a/src/include/utils/syscache.h b/src/include/utils/syscache.h index 4463ea66be..489c6ee734 100644 --- a/src/include/utils/syscache.h +++ b/src/include/utils/syscache.h @@ -44,8 +44,14 @@ enum SysCacheIdentifier AUTHNAME, AUTHOID, CASTSOURCETARGET, + CEKDATACEKCMK, + CEKDATAOID, + CEKNAME, + CEKOID, CLAAMNAMENSP, CLAOID, + CMKNAME, + CMKOID, COLLNAMEENCNSP, COLLOID, CONDEFAULT, diff --git a/src/interfaces/libpq/Makefile b/src/interfaces/libpq/Makefile index 1d31b256fc..4812f862ca 100644 --- a/src/interfaces/libpq/Makefile +++ b/src/interfaces/libpq/Makefile @@ -54,6 +54,7 @@ endif ifeq ($(with_ssl),openssl) OBJS += \ + fe-encrypt-openssl.o \ fe-secure-openssl.o endif diff --git a/src/interfaces/libpq/exports.txt b/src/interfaces/libpq/exports.txt index e8bcc88370..8897aa243c 100644 --- a/src/interfaces/libpq/exports.txt +++ b/src/interfaces/libpq/exports.txt @@ -186,3 +186,7 @@ PQpipelineStatus 183 PQsetTraceFlags 184 PQmblenBounded 185 PQsendFlushRequest 186 +PQexecPreparedDescribed 187 +PQsendQueryPreparedDescribed 188 +PQfisencrypted 189 +PQparamisencrypted 190 diff --git a/src/interfaces/libpq/fe-connect.c b/src/interfaces/libpq/fe-connect.c index f88d672c6c..48b41f9709 100644 --- a/src/interfaces/libpq/fe-connect.c +++ b/src/interfaces/libpq/fe-connect.c @@ -341,6 +341,14 @@ static const internalPQconninfoOption PQconninfoOptions[] = { "Target-Session-Attrs", "", 15, /* sizeof("prefer-standby") = 15 */ offsetof(struct pg_conn, target_session_attrs)}, + {"cmklookup", "PGCMKLOOKUP", "", NULL, + "CMK-Lookup", "", 64, + offsetof(struct pg_conn, cmklookup)}, + + {"column_encryption", "PGCOLUMNENCRYPTION", "0", NULL, + "Column-Encryption", "", 1, + offsetof(struct pg_conn, column_encryption_setting)}, + /* Terminating entry --- MUST BE LAST */ {NULL, NULL, NULL, NULL, NULL, NULL, 0} @@ -2422,6 +2430,7 @@ PQconnectPoll(PGconn *conn) #ifdef ENABLE_GSS conn->try_gss = (conn->gssencmode[0] != 'd'); /* "disable" */ #endif + conn->column_encryption_enabled = (conn->column_encryption_setting[0] == '1'); reset_connection_state_machine = false; need_new_connection = true; @@ -4029,6 +4038,22 @@ freePGconn(PGconn *conn) free(conn->krbsrvname); free(conn->gsslib); free(conn->connip); + free(conn->cmklookup); + for (int i = 0; i < conn->ncmks; i++) + { + free(conn->cmks[i].cmkname); + free(conn->cmks[i].cmkrealm); + } + free(conn->cmks); + for (int i = 0; i < conn->nceks; i++) + { + if (conn->ceks[i].cekdata) + { + explicit_bzero(conn->ceks[i].cekdata, conn->ceks[i].cekdatalen); + free(conn->ceks[i].cekdata); + } + } + free(conn->ceks); /* Note that conn->Pfdebug is not ours to close or free */ free(conn->write_err_msg); free(conn->inBuffer); diff --git a/src/interfaces/libpq/fe-encrypt-openssl.c b/src/interfaces/libpq/fe-encrypt-openssl.c new file mode 100644 index 0000000000..c1112eba83 --- /dev/null +++ b/src/interfaces/libpq/fe-encrypt-openssl.c @@ -0,0 +1,836 @@ +/*------------------------------------------------------------------------- + * + * fe-encrypt-openssl.c + * + * client-side column encryption support using OpenSSL + * + * Portions Copyright (c) 1996-2023, PostgreSQL Global Development Group + * Portions Copyright (c) 1994, Regents of the University of California + * + * + * IDENTIFICATION + * src/interfaces/libpq/fe-encrypt-openssl.c + * + *------------------------------------------------------------------------- + */ + +#include "postgres_fe.h" + +#include "fe-encrypt.h" +#include "libpq-int.h" + +#include "common/colenc.h" +#include "port/pg_bswap.h" + +#include + + +/* + * When TEST_ENCRYPT is defined, this file builds a standalone program that + * checks encryption test cases against the specification document. + * + * We have to replace some functions that are not available in that + * environment. + */ +#ifdef TEST_ENCRYPT + +#define libpq_gettext(x) (x) +#define libpq_append_conn_error(conn, ...) appendPQExpBuffer(&(conn)->errorMessage, __VA_ARGS__) + +#endif /* TEST_ENCRYPT */ + + +/* + * Decrypt the CEK given by "from" and "fromlen" (data typically sent from the + * server) using the CMK in cmkfilename. + */ +unsigned char * +decrypt_cek_from_file(PGconn *conn, const char *cmkfilename, int cmkalg, + int fromlen, const unsigned char *from, + int *tolen) +{ + const EVP_MD *md = NULL; + EVP_PKEY *key = NULL; + RSA *rsa = NULL; + BIO *bio = NULL; + EVP_PKEY_CTX *ctx = NULL; + unsigned char *out = NULL; + size_t outlen; + + switch (cmkalg) + { + case PG_CMK_RSAES_OAEP_SHA_1: + md = EVP_sha1(); + break; + case PG_CMK_RSAES_OAEP_SHA_256: + md = EVP_sha256(); + break; + case PG_CMK_UNSPECIFIED: + libpq_append_conn_error(conn, "unspecified CMK algorithm not supported with file lookup scheme"); + goto fail; + default: + libpq_append_conn_error(conn, "unsupported CMK algorithm ID: %d", cmkalg); + goto fail; + } + + bio = BIO_new_file(cmkfilename, "r"); + if (!bio) + { + libpq_append_conn_error(conn, "could not open file \"%s\": %m", cmkfilename); + goto fail; + } + + rsa = RSA_new(); + if (!rsa) + { + libpq_append_conn_error(conn, "could not allocate RSA structure: %s", + ERR_reason_error_string(ERR_get_error())); + goto fail; + } + /* + * Note: We must go through BIO and not say use PEM_read_RSAPrivateKey() + * directly on a FILE. Otherwise, we get into "no OPENSSL_Applink" hell + * on Windows (which happens whenever you pass a stdio handle from the + * application into OpenSSL). + */ + rsa = PEM_read_bio_RSAPrivateKey(bio, &rsa, NULL, NULL); + if (!rsa) + { + libpq_append_conn_error(conn, "could not read RSA private key: %s", + ERR_reason_error_string(ERR_get_error())); + goto fail; + } + + key = EVP_PKEY_new(); + if (!key) + { + libpq_append_conn_error(conn, "could not allocate private key structure: %s", + ERR_reason_error_string(ERR_get_error())); + goto fail; + } + + if (!EVP_PKEY_assign_RSA(key, rsa)) + { + libpq_append_conn_error(conn, "could not assign private key: %s", + ERR_reason_error_string(ERR_get_error())); + goto fail; + } + + ctx = EVP_PKEY_CTX_new(key, NULL); + if (!ctx) + { + libpq_append_conn_error(conn, "could not allocate public key algorithm context: %s", + ERR_reason_error_string(ERR_get_error())); + goto fail; + } + + if (EVP_PKEY_decrypt_init(ctx) <= 0) + { + libpq_append_conn_error(conn, "decryption initialization failed: %s", + ERR_reason_error_string(ERR_get_error())); + goto fail; + } + + if (EVP_PKEY_CTX_set_rsa_padding(ctx, RSA_PKCS1_OAEP_PADDING) <= 0 || + EVP_PKEY_CTX_set_rsa_mgf1_md(ctx, md) <= 0 || + EVP_PKEY_CTX_set_rsa_oaep_md(ctx, md) <= 0) + { + libpq_append_conn_error(conn, "could not set RSA parameter: %s", + ERR_reason_error_string(ERR_get_error())); + goto fail; + } + + /* get output length */ + if (EVP_PKEY_decrypt(ctx, NULL, &outlen, from, fromlen) <= 0) + { + libpq_append_conn_error(conn, "RSA decryption setup failed: %s", + ERR_reason_error_string(ERR_get_error())); + goto fail; + } + + out = malloc(outlen); + if (!out) + { + libpq_append_conn_error(conn, "out of memory"); + goto fail; + } + + if (EVP_PKEY_decrypt(ctx, out, &outlen, from, fromlen) <= 0) + { + libpq_append_conn_error(conn, "RSA decryption failed: %s", + ERR_reason_error_string(ERR_get_error())); + free(out); + out = NULL; + goto fail; + } + + *tolen = outlen; + +fail: + EVP_PKEY_CTX_free(ctx); + EVP_PKEY_free(key); + BIO_free(bio); + + return out; +} + + +/* + * The routines below implement the AEAD algorithms specified in + * + * for encrypting and decrypting column values. + */ + +#ifdef TEST_ENCRYPT + +/* + * Test data from + * + */ + +/* + * The different test cases just use different prefixes of K, so one constant + * is enough here. + */ +static const unsigned char K[] = { + 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, + 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, + 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, + 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f, +}; + +static const unsigned char P[] = { + 0x41, 0x20, 0x63, 0x69, 0x70, 0x68, 0x65, 0x72, 0x20, 0x73, 0x79, 0x73, 0x74, 0x65, 0x6d, 0x20, + 0x6d, 0x75, 0x73, 0x74, 0x20, 0x6e, 0x6f, 0x74, 0x20, 0x62, 0x65, 0x20, 0x72, 0x65, 0x71, 0x75, + 0x69, 0x72, 0x65, 0x64, 0x20, 0x74, 0x6f, 0x20, 0x62, 0x65, 0x20, 0x73, 0x65, 0x63, 0x72, 0x65, + 0x74, 0x2c, 0x20, 0x61, 0x6e, 0x64, 0x20, 0x69, 0x74, 0x20, 0x6d, 0x75, 0x73, 0x74, 0x20, 0x62, + 0x65, 0x20, 0x61, 0x62, 0x6c, 0x65, 0x20, 0x74, 0x6f, 0x20, 0x66, 0x61, 0x6c, 0x6c, 0x20, 0x69, + 0x6e, 0x74, 0x6f, 0x20, 0x74, 0x68, 0x65, 0x20, 0x68, 0x61, 0x6e, 0x64, 0x73, 0x20, 0x6f, 0x66, + 0x20, 0x74, 0x68, 0x65, 0x20, 0x65, 0x6e, 0x65, 0x6d, 0x79, 0x20, 0x77, 0x69, 0x74, 0x68, 0x6f, + 0x75, 0x74, 0x20, 0x69, 0x6e, 0x63, 0x6f, 0x6e, 0x76, 0x65, 0x6e, 0x69, 0x65, 0x6e, 0x63, 0x65, +}; + +static const unsigned char test_IV[] = { + 0x1a, 0xf3, 0x8c, 0x2d, 0xc2, 0xb9, 0x6f, 0xfd, 0xd8, 0x66, 0x94, 0x09, 0x23, 0x41, 0xbc, 0x04, +}; + +static const unsigned char test_A[] = { + 0x54, 0x68, 0x65, 0x20, 0x73, 0x65, 0x63, 0x6f, 0x6e, 0x64, 0x20, 0x70, 0x72, 0x69, 0x6e, 0x63, + 0x69, 0x70, 0x6c, 0x65, 0x20, 0x6f, 0x66, 0x20, 0x41, 0x75, 0x67, 0x75, 0x73, 0x74, 0x65, 0x20, + 0x4b, 0x65, 0x72, 0x63, 0x6b, 0x68, 0x6f, 0x66, 0x66, 0x73, +}; + +#endif /* TEST_ENCRYPT */ + + +/* + * Get OpenSSL cipher that corresponds to the CEK algorithm number. + */ +static const EVP_CIPHER * +pg_cekalg_to_openssl_cipher(int cekalg) +{ + const EVP_CIPHER *cipher; + + switch (cekalg) + { + case PG_CEK_AEAD_AES_128_CBC_HMAC_SHA_256: + cipher = EVP_aes_128_cbc(); + break; + case PG_CEK_AEAD_AES_192_CBC_HMAC_SHA_384: + cipher = EVP_aes_192_cbc(); + break; + case PG_CEK_AEAD_AES_256_CBC_HMAC_SHA_384: + case PG_CEK_AEAD_AES_256_CBC_HMAC_SHA_512: + cipher = EVP_aes_256_cbc(); + break; + default: + cipher = NULL; + } + + return cipher; +} + +/* + * Get OpenSSL digest (for MAC) that corresponds to the CEK algorithm number. + */ +static const EVP_MD * +pg_cekalg_to_openssl_md(int cekalg) +{ + const EVP_MD *md; + + switch (cekalg) + { + case PG_CEK_AEAD_AES_128_CBC_HMAC_SHA_256: + md = EVP_sha256(); + break; + case PG_CEK_AEAD_AES_192_CBC_HMAC_SHA_384: + case PG_CEK_AEAD_AES_256_CBC_HMAC_SHA_384: + md = EVP_sha384(); + break; + case PG_CEK_AEAD_AES_256_CBC_HMAC_SHA_512: + md = EVP_sha512(); + break; + default: + md = NULL; + } + + return md; +} + +/* + * Get the MAC key length (in octets) that corresponds to the CEK algorithm number. + * + * This is MAC_KEY_LEN in the mcgrew paper. + */ +static int +md_key_length(const EVP_MD *md) +{ + if (md == EVP_sha256()) + return 16; + else if (md == EVP_sha384()) + return 24; + else if (md == EVP_sha512()) + return 32; + else + return -1; +} + +/* + * Get the HMAC output length (in octets) that corresponds to the CEK + * algorithm number. + */ +static int +md_hash_length(const EVP_MD *md) +{ + if (md == EVP_sha256()) + return 32; + else if (md == EVP_sha384()) + return 48; + else if (md == EVP_sha512()) + return 64; + else + return -1; +} + +/* + * Length of associated data (A in mcgrew paper) + */ +#ifndef TEST_ENCRYPT +#define PG_AD_LEN 4 +#else +#define PG_AD_LEN sizeof(test_A) +#endif + +/* + * Compute message authentication tag (T in the mcgrew paper), from MAC key + * and ciphertext. + * + * Returns false on error, with error message in errmsgp. + */ +static bool +get_message_auth_tag(const EVP_MD *md, + const unsigned char *mac_key, int mac_key_len, + const unsigned char *encr, int encrlen, + unsigned char *md_value, size_t *md_len_p, + const char **errmsgp) +{ + static char msgbuf[1024]; + EVP_MD_CTX *evp_md_ctx = NULL; + EVP_PKEY *pkey = NULL; + size_t bufsize; + unsigned char *buf = NULL; + int64 al; + bool result = false; + + if (encrlen < 0) + { + snprintf(msgbuf, sizeof(msgbuf), + libpq_gettext("encrypted value has invalid length")); + *errmsgp = msgbuf; + goto fail; + } + + evp_md_ctx = EVP_MD_CTX_new(); + + pkey = EVP_PKEY_new_raw_private_key(EVP_PKEY_HMAC, NULL, mac_key, mac_key_len); + if (!pkey) + { + snprintf(msgbuf, sizeof(msgbuf), + libpq_gettext("could not allocate key for HMAC: %s"), + ERR_reason_error_string(ERR_get_error())); + *errmsgp = msgbuf; + goto fail; + } + + /* + * Build input to MAC call (A || S || AL in mcgrew paper) + */ + bufsize = PG_AD_LEN + encrlen + sizeof(int64); + buf = malloc(bufsize); + if (!buf) + { + *errmsgp = libpq_gettext("out of memory"); + goto fail; + } + /* A (associated data) */ +#ifndef TEST_ENCRYPT + buf[0] = 'P'; + buf[1] = 'G'; + *(int16 *) (buf + 2) = pg_hton16(1); +#else + memcpy(buf, test_A, sizeof(test_A)); +#endif + /* S (ciphertext) */ + memcpy(buf + PG_AD_LEN, encr, encrlen); + /* AL (number of *bits* in A) */ + al = pg_hton64(PG_AD_LEN * 8); + memcpy(buf + PG_AD_LEN + encrlen, &al, sizeof(al)); + + /* + * Call MAC + */ + if (!EVP_DigestSignInit(evp_md_ctx, NULL, md, NULL, pkey)) + { + snprintf(msgbuf, sizeof(msgbuf), + libpq_gettext("digest initialization failed: %s"), + ERR_reason_error_string(ERR_get_error())); + *errmsgp = msgbuf; + goto fail; + } + + if (!EVP_DigestSignUpdate(evp_md_ctx, buf, bufsize)) + { + snprintf(msgbuf, sizeof(msgbuf), + libpq_gettext("digest signing failed: %s"), + ERR_reason_error_string(ERR_get_error())); + *errmsgp = msgbuf; + goto fail; + } + + if (!EVP_DigestSignFinal(evp_md_ctx, md_value, md_len_p)) + { + snprintf(msgbuf, sizeof(msgbuf), + libpq_gettext("digest signing failed: %s"), + ERR_reason_error_string(ERR_get_error())); + *errmsgp = msgbuf; + goto fail; + } + Assert(*md_len_p == md_hash_length(md)); + + /* truncate output to half the length, per spec */ + *md_len_p /= 2; + + result = true; +fail: + free(buf); + EVP_PKEY_free(pkey); + EVP_MD_CTX_free(evp_md_ctx); + return result; +} + +/* + * Decrypt a column value + */ +unsigned char * +decrypt_value(PGresult *res, const PGCEK *cek, int cekalg, const unsigned char *input, int inputlen, const char **errmsgp) +{ + static char msgbuf[1024]; + + const unsigned char *iv = NULL; + size_t ivlen; + + const EVP_CIPHER *cipher; + const EVP_MD *md; + EVP_CIPHER_CTX *evp_cipher_ctx = NULL; + int enc_key_len; + int mac_key_len; + int iv_key_len; + int key_len; + const unsigned char *enc_key; + const unsigned char *mac_key; + unsigned char md_value[EVP_MAX_MD_SIZE]; + size_t md_len = sizeof(md_value); + size_t bufsize; + unsigned char *buf = NULL; + unsigned char *decr; + int decrlen, + decrlen2; + + unsigned char *result = NULL; + + cipher = pg_cekalg_to_openssl_cipher(cekalg); + if (!cipher) + { + snprintf(msgbuf, sizeof(msgbuf), + libpq_gettext("unrecognized encryption algorithm identifier: %d"), cekalg); + *errmsgp = msgbuf; + goto fail; + } + + md = pg_cekalg_to_openssl_md(cekalg); + if (!md) + { + snprintf(msgbuf, sizeof(msgbuf), + libpq_gettext("unrecognized digest algorithm identifier: %d"), cekalg); + *errmsgp = msgbuf; + goto fail; + } + + evp_cipher_ctx = EVP_CIPHER_CTX_new(); + + if (!EVP_DecryptInit_ex(evp_cipher_ctx, cipher, NULL, NULL, NULL)) + { + snprintf(msgbuf, sizeof(msgbuf), + libpq_gettext("decryption initialization failed: %s"), + ERR_reason_error_string(ERR_get_error())); + *errmsgp = msgbuf; + goto fail; + } + + enc_key_len = EVP_CIPHER_CTX_key_length(evp_cipher_ctx); + mac_key_len = iv_key_len = md_key_length(md); + key_len = mac_key_len + enc_key_len + iv_key_len; + + if (cek->cekdatalen != key_len) + { + snprintf(msgbuf, sizeof(msgbuf), + libpq_gettext("column encryption key has wrong length for algorithm (has: %zu, required: %d)"), + cek->cekdatalen, key_len); + *errmsgp = msgbuf; + goto fail; + } + + mac_key = cek->cekdata; + enc_key = cek->cekdata + mac_key_len; + + if (!get_message_auth_tag(md, mac_key, mac_key_len, + input, inputlen - (md_hash_length(md) / 2), + md_value, &md_len, + errmsgp)) + { + goto fail; + } + + /* use constant-time comparison, per mcgrew paper */ + if (CRYPTO_memcmp(input + (inputlen - md_len), md_value, md_len) != 0) + { + *errmsgp = libpq_gettext("MAC mismatch"); + goto fail; + } + + ivlen = EVP_CIPHER_CTX_iv_length(evp_cipher_ctx); + iv = input; + input += ivlen; + inputlen -= ivlen; + if (!EVP_DecryptInit_ex(evp_cipher_ctx, NULL, NULL, enc_key, iv)) + { + snprintf(msgbuf, sizeof(msgbuf), + libpq_gettext("decryption initialization failed: %s"), + ERR_reason_error_string(ERR_get_error())); + *errmsgp = msgbuf; + goto fail; + } + + bufsize = inputlen + EVP_CIPHER_CTX_block_size(evp_cipher_ctx) + 1; +#ifndef TEST_ENCRYPT + buf = pqResultAlloc(res, bufsize, false); +#else + buf = malloc(bufsize); +#endif + if (!buf) + { + *errmsgp = libpq_gettext("out of memory"); + goto fail; + } + decr = buf; + if (!EVP_DecryptUpdate(evp_cipher_ctx, decr, &decrlen, input, inputlen - md_len)) + { + snprintf(msgbuf, sizeof(msgbuf), + libpq_gettext("decryption failed: %s"), + ERR_reason_error_string(ERR_get_error())); + *errmsgp = msgbuf; + goto fail; + } + if (!EVP_DecryptFinal_ex(evp_cipher_ctx, decr + decrlen, &decrlen2)) + { + snprintf(msgbuf, sizeof(msgbuf), + libpq_gettext("decryption failed: %s"), + ERR_reason_error_string(ERR_get_error())); + *errmsgp = msgbuf; + goto fail; + } + decrlen += decrlen2; + Assert(decrlen < bufsize); + decr[decrlen] = '\0'; + result = decr; + +fail: + EVP_CIPHER_CTX_free(evp_cipher_ctx); + + return result; +} + +/* + * Compute a synthetic initialization vector (SIV), for deterministic + * encryption. + * + * Per protocol specification, the SIV is computed as: + * + * SUBSTRING(HMAC(K, P) FOR IVLEN) + */ +#ifndef TEST_ENCRYPT +static bool +make_siv(PGconn *conn, + unsigned char *iv, size_t ivlen, + const EVP_MD *md, + const unsigned char *iv_key, int iv_key_len, + const unsigned char *plaintext, int plaintext_len) +{ + EVP_MD_CTX *evp_md_ctx = NULL; + EVP_PKEY *pkey = NULL; + unsigned char md_value[EVP_MAX_MD_SIZE]; + size_t md_len = sizeof(md_value); + bool result = false; + + evp_md_ctx = EVP_MD_CTX_new(); + + pkey = EVP_PKEY_new_raw_private_key(EVP_PKEY_HMAC, NULL, iv_key, iv_key_len); + if (!pkey) + { + libpq_append_conn_error(conn, "could not allocate key for HMAC: %s", + ERR_reason_error_string(ERR_get_error())); + goto fail; + } + + if (!EVP_DigestSignInit(evp_md_ctx, NULL, md, NULL, pkey)) + { + libpq_append_conn_error(conn, "digest initialization failed: %s", + ERR_reason_error_string(ERR_get_error())); + goto fail; + } + + if (!EVP_DigestSignUpdate(evp_md_ctx, plaintext, plaintext_len)) + { + libpq_append_conn_error(conn, "digest signing failed: %s", + ERR_reason_error_string(ERR_get_error())); + goto fail; + } + + if (!EVP_DigestSignFinal(evp_md_ctx, md_value, &md_len)) + { + libpq_append_conn_error(conn, "digest signing failed: %s", + ERR_reason_error_string(ERR_get_error())); + goto fail; + } + Assert(md_len == md_hash_length(md)); + memcpy(iv, md_value, ivlen); + + result = true; +fail: + EVP_PKEY_free(pkey); + EVP_MD_CTX_free(evp_md_ctx); + return result; +} +#endif /* TEST_ENCRYPT */ + +/* + * Encrypt a column value + */ +unsigned char * +encrypt_value(PGconn *conn, const PGCEK *cek, int cekalg, const unsigned char *value, int *nbytesp, bool enc_det) +{ + int nbytes = *nbytesp; + unsigned char iv[EVP_MAX_IV_LENGTH]; + size_t ivlen; + const EVP_CIPHER *cipher; + const EVP_MD *md; + EVP_CIPHER_CTX *evp_cipher_ctx = NULL; + int enc_key_len; + int mac_key_len; + int iv_key_len; + int key_len; + const unsigned char *enc_key; + const unsigned char *mac_key; + const unsigned char *iv_key; + size_t bufsize; + unsigned char *buf = NULL; + unsigned char *encr; + int encrlen, + encrlen2; + + const char *errmsg; + unsigned char md_value[EVP_MAX_MD_SIZE]; + size_t md_len = sizeof(md_value); + size_t buf2size; + unsigned char *buf2 = NULL; + + unsigned char *result = NULL; + + cipher = pg_cekalg_to_openssl_cipher(cekalg); + if (!cipher) + { + libpq_append_conn_error(conn, "unrecognized encryption algorithm identifier: %d", cekalg); + goto fail; + } + + md = pg_cekalg_to_openssl_md(cekalg); + if (!md) + { + libpq_append_conn_error(conn, "unrecognized digest algorithm identifier: %d", cekalg); + goto fail; + } + + evp_cipher_ctx = EVP_CIPHER_CTX_new(); + + if (!EVP_EncryptInit_ex(evp_cipher_ctx, cipher, NULL, NULL, NULL)) + { + libpq_append_conn_error(conn, "encryption initialization failed: %s", + ERR_reason_error_string(ERR_get_error())); + goto fail; + } + + enc_key_len = EVP_CIPHER_CTX_key_length(evp_cipher_ctx); + mac_key_len = iv_key_len = md_key_length(md); + key_len = mac_key_len + enc_key_len + iv_key_len; + + if (cek->cekdatalen != key_len) + { + libpq_append_conn_error(conn, "column encryption key has wrong length for algorithm (has: %zu, required: %d)", + cek->cekdatalen, key_len); + goto fail; + } + + mac_key = cek->cekdata; + enc_key = cek->cekdata + mac_key_len; + iv_key = cek->cekdata + mac_key_len + enc_key_len; + + ivlen = EVP_CIPHER_CTX_iv_length(evp_cipher_ctx); + Assert(ivlen <= sizeof(iv)); + if (enc_det) + { +#ifndef TEST_ENCRYPT + make_siv(conn, iv, ivlen, md, iv_key, iv_key_len, value, nbytes); +#else + (void) iv_key; /* unused */ + memcpy(iv, test_IV, ivlen); +#endif + } + else + pg_strong_random(iv, ivlen); + if (!EVP_EncryptInit_ex(evp_cipher_ctx, NULL, NULL, enc_key, iv)) + { + libpq_append_conn_error(conn, "encryption initialization failed: %s", + ERR_reason_error_string(ERR_get_error())); + goto fail; + } + + bufsize = ivlen + (nbytes + 2 * EVP_CIPHER_CTX_block_size(evp_cipher_ctx) - 1); + buf = malloc(bufsize); + if (!buf) + { + libpq_append_conn_error(conn, "out of memory"); + goto fail; + } + memcpy(buf, iv, ivlen); + encr = buf + ivlen; + if (!EVP_EncryptUpdate(evp_cipher_ctx, encr, &encrlen, value, nbytes)) + { + libpq_append_conn_error(conn, "encryption failed: %s", + ERR_reason_error_string(ERR_get_error())); + goto fail; + } + if (!EVP_EncryptFinal_ex(evp_cipher_ctx, encr + encrlen, &encrlen2)) + { + libpq_append_conn_error(conn, "encryption failed: %s", + ERR_reason_error_string(ERR_get_error())); + goto fail; + } + encrlen += encrlen2; + + encr -= ivlen; + encrlen += ivlen; + + Assert(encrlen <= bufsize); + + if (!get_message_auth_tag(md, mac_key, mac_key_len, + encr, encrlen, + md_value, &md_len, + &errmsg)) + { + appendPQExpBuffer(&conn->errorMessage, "%s\n", errmsg); + goto fail; + } + + buf2size = encrlen + md_len; + buf2 = malloc(buf2size); + if (!buf2) + { + libpq_append_conn_error(conn, "out of memory"); + goto fail; + } + memcpy(buf2, encr, encrlen); + memcpy(buf2 + encrlen, md_value, md_len); + + result = buf2; + nbytes = buf2size; + +fail: + free(buf); + EVP_CIPHER_CTX_free(evp_cipher_ctx); + + *nbytesp = nbytes; + return result; +} + + +/* + * Run test cases + */ +#ifdef TEST_ENCRYPT + +static void +debug_print_hex(const char *name, const unsigned char *val, int len) +{ + printf("%s =", name); + for (int i = 0; i < len; i++) + { + if (i % 16 == 0) + printf("\n"); + else + printf(" "); + printf("%02x", val[i]); + } + printf("\n"); +} + +static void +test_case(int alg, const unsigned char *K, size_t K_len, const unsigned char *P, size_t P_len) +{ + unsigned char *C; + int nbytes; + PGCEK cek; + + nbytes = P_len; + cek.cekdata = unconstify(unsigned char *, K); + cek.cekdatalen = K_len; + + C = encrypt_value(NULL, &cek, alg, P, &nbytes, true); + debug_print_hex("C", C, nbytes); +} + +int +main(int argc, char **argv) +{ + printf("5.1\n"); + test_case(PG_CEK_AEAD_AES_128_CBC_HMAC_SHA_256, K, 32, P, sizeof(P)); + printf("5.2\n"); + test_case(PG_CEK_AEAD_AES_192_CBC_HMAC_SHA_384, K, 48, P, sizeof(P)); + printf("5.3\n"); + test_case(PG_CEK_AEAD_AES_256_CBC_HMAC_SHA_384, K, 56, P, sizeof(P)); + printf("5.4\n"); + test_case(PG_CEK_AEAD_AES_256_CBC_HMAC_SHA_512, K, 64, P, sizeof(P)); + + return 0; +} + +#endif /* TEST_ENCRYPT */ diff --git a/src/interfaces/libpq/fe-encrypt.h b/src/interfaces/libpq/fe-encrypt.h new file mode 100644 index 0000000000..0b65f913da --- /dev/null +++ b/src/interfaces/libpq/fe-encrypt.h @@ -0,0 +1,33 @@ +/*------------------------------------------------------------------------- + * + * fe-encrypt.h + * + * client-side column encryption support + * + * Portions Copyright (c) 1996-2023, PostgreSQL Global Development Group + * Portions Copyright (c) 1994, Regents of the University of California + * + * IDENTIFICATION + * src/interfaces/libpq/fe-encrypt.h + * + *------------------------------------------------------------------------- + */ + +#ifndef FE_ENCRYPT_H +#define FE_ENCRYPT_H + +#include "libpq-fe.h" +#include "libpq-int.h" + +extern unsigned char *decrypt_cek_from_file(PGconn *conn, const char *cmkfilename, int cmkalg, + int fromlen, const unsigned char *from, + int *tolen); + +extern unsigned char *decrypt_value(PGresult *res, const PGCEK *cek, int cekalg, + const unsigned char *input, int inputlen, + const char **errmsgp); + +extern unsigned char *encrypt_value(PGconn *conn, const PGCEK *cek, int cekalg, + const unsigned char *value, int *nbytesp, bool enc_det); + +#endif /* FE_ENCRYPT_H */ diff --git a/src/interfaces/libpq/fe-exec.c b/src/interfaces/libpq/fe-exec.c index da229d632a..ca0cb615cd 100644 --- a/src/interfaces/libpq/fe-exec.c +++ b/src/interfaces/libpq/fe-exec.c @@ -24,6 +24,8 @@ #include #endif +#include "common/colenc.h" +#include "fe-encrypt.h" #include "libpq-fe.h" #include "libpq-int.h" #include "mb/pg_wchar.h" @@ -72,7 +74,8 @@ static int PQsendQueryGuts(PGconn *conn, const char *const *paramValues, const int *paramLengths, const int *paramFormats, - int resultFormat); + int resultFormat, + PGresult *paramDesc); static void parseInput(PGconn *conn); static PGresult *getCopyResult(PGconn *conn, ExecStatusType copytype); static bool PQexecStart(PGconn *conn); @@ -1183,6 +1186,414 @@ pqSaveParameterStatus(PGconn *conn, const char *name, const char *value) } } +/* + * pqSaveColumnMasterKey - save column master key sent by backend + */ +int +pqSaveColumnMasterKey(PGconn *conn, int keyid, const char *keyname, + const char *keyrealm) +{ + char *keyname_copy; + char *keyrealm_copy; + bool found; + + keyname_copy = strdup(keyname); + if (!keyname_copy) + return EOF; + keyrealm_copy = strdup(keyrealm); + if (!keyrealm_copy) + { + free(keyname_copy); + return EOF; + } + + found = false; + for (int i = 0; i < conn->ncmks; i++) + { + struct pg_cmk *checkcmk = &conn->cmks[i]; + + /* replace existing? */ + if (checkcmk->cmkid == keyid) + { + free(checkcmk->cmkname); + free(checkcmk->cmkrealm); + checkcmk->cmkname = keyname_copy; + checkcmk->cmkrealm = keyrealm_copy; + found = true; + break; + } + } + + /* append new? */ + if (!found) + { + int newncmks; + struct pg_cmk *newcmks; + struct pg_cmk *newcmk; + + newncmks = conn->ncmks + 1; + if (newncmks <= 0) + return EOF; + newcmks = realloc(conn->cmks, newncmks * sizeof(struct pg_cmk)); + if (!newcmks) + { + free(keyname_copy); + free(keyrealm_copy); + return EOF; + } + + newcmk = &newcmks[newncmks - 1]; + newcmk->cmkid = keyid; + newcmk->cmkname = keyname_copy; + newcmk->cmkrealm = keyrealm_copy; + + conn->ncmks = newncmks; + conn->cmks = newcmks; + } + + return 0; +} + +/* + * Replace placeholders in input string. Return value malloc'ed. + */ +static char * +replace_cmk_placeholders(const char *in, const char *cmkname, const char *cmkrealm, int cmkalg, const char *tmpfile) +{ + PQExpBufferData buf; + + initPQExpBuffer(&buf); + + for (const char *p = in; *p; p++) + { + if (p[0] == '%') + { + switch (p[1]) + { + case 'a': + { + const char *s = get_cmkalg_name(cmkalg); + + appendPQExpBufferStr(&buf, s ? s : "INVALID"); + } + p++; + break; + case 'j': + { + const char *s = get_cmkalg_jwa_name(cmkalg); + + appendPQExpBufferStr(&buf, s ? s : "INVALID"); + } + p++; + break; + case 'k': + appendPQExpBufferStr(&buf, cmkname); + p++; + break; + case 'p': + appendPQExpBufferStr(&buf, tmpfile); + p++; + break; + case 'r': + appendPQExpBufferStr(&buf, cmkrealm); + p++; + break; + default: + appendPQExpBufferChar(&buf, p[0]); + } + } + else + appendPQExpBufferChar(&buf, p[0]); + } + + return buf.data; +} + +#ifndef USE_SSL +/* + * Dummy implementation for non-SSL builds + */ +unsigned char * +decrypt_cek_from_file(PGconn *conn, const char *cmkfilename, int cmkalg, + int fromlen, const unsigned char *from, + int *tolen) +{ + libpq_append_conn_error(conn, "column encryption not supported by this build"); + return NULL; +} +#endif + +/* + * Decrypt a CEK using the given CMK. The ciphertext is passed in + * "from" and "fromlen". Return the decrypted value in a malloc'ed area, its + * length via "tolen". Return NULL on error; add error messages directly to + * "conn". + */ +static unsigned char * +decrypt_cek(PGconn *conn, const PGCMK *cmk, int cmkalg, + int fromlen, const unsigned char *from, + int *tolen) +{ + char *cmklookup; + bool found = false; + unsigned char *result = NULL; + + cmklookup = strdup(conn->cmklookup ? conn->cmklookup : ""); + + if (!cmklookup) + { + libpq_append_conn_error(conn, "out of memory"); + return NULL; + } + + /* + * Analyze semicolon-separated list + */ + for (char *s = strtok(cmklookup, ";"); s; s = strtok(NULL, ";")) + { + char *sep; + + /* split found token at '=' */ + sep = strchr(s, '='); + if (!sep) + { + libpq_append_conn_error(conn, "syntax error in CMK lookup specification, missing \"%c\": %s", '=', s); + break; + } + + /* matching realm? */ + if (strncmp(s, "*", sep - s) == 0 || strncmp(s, cmk->cmkrealm, sep - s) == 0) + { + char *sep2; + + found = true; + + sep2 = strchr(sep, ':'); + if (!sep2) + { + libpq_append_conn_error(conn, "syntax error in CMK lookup specification, missing \"%c\": %s", ':', s); + goto fail; + } + + if (strncmp(sep + 1, "file", sep2 - (sep + 1)) == 0) + { + char *cmkfilename; + + cmkfilename = replace_cmk_placeholders(sep2 + 1, cmk->cmkname, cmk->cmkrealm, cmkalg, "INVALID"); + result = decrypt_cek_from_file(conn, cmkfilename, cmkalg, fromlen, from, tolen); + free(cmkfilename); + } + else if (strncmp(sep + 1, "run", sep2 - (sep + 1)) == 0) + { + char tmpfile[MAXPGPATH] = {0}; + int fd; + char *command; + FILE *fp; + /* only needs enough room for CEK key material */ + char buf[1024]; + size_t nread; + int rc; + +#ifndef WIN32 + { + const char *tmpdir; + + tmpdir = getenv("TMPDIR"); + if (!tmpdir) + tmpdir = "/tmp"; + strlcpy(tmpfile, tmpdir, sizeof(tmpfile)); + strlcat(tmpfile, "/libpq-XXXXXX", sizeof(tmpfile)); + fd = mkstemp(tmpfile); + if (fd < 0) + { + libpq_append_conn_error(conn, "could not run create temporary file: %m"); + goto fail; + } + } +#else + { + char tmpdir[MAXPGPATH]; + int ret; + + ret = GetTempPath(MAXPGPATH, tmpdir); + if (ret == 0 || ret > MAXPGPATH) + { + libpq_append_conn_error(conn, "could not locate temporary directory: %s", + !ret ? strerror(errno) : ""); + return false; + } + + if (GetTempFileName(tmpdir, "libpq", 0, tmpfile) == 0) + { + libpq_append_conn_error(conn, "could not run create temporary file: error code %lu", + GetLastError()); + goto fail; + } + + fd = open(tmpfile, O_WRONLY, 0); + if (fd < 0) + { + libpq_append_conn_error(conn, "could not run open temporary file: %m"); + goto fail; + } + } +#endif + if (write(fd, from, fromlen) < fromlen) + { + libpq_append_conn_error(conn, "could not write to temporary file: %m"); + close(fd); + unlink(tmpfile); + goto fail; + } + if (close(fd) < 0) + { + libpq_append_conn_error(conn, "could not close temporary file: %m"); + unlink(tmpfile); + goto fail; + } + + command = replace_cmk_placeholders(sep2 + 1, cmk->cmkname, cmk->cmkrealm, cmkalg, tmpfile); + fp = popen(command, "r"); + if (!fp) + { + libpq_append_conn_error(conn, "could not run command \"%s\": %m", command); + free(command); + unlink(tmpfile); + goto fail; + } + nread = fread(buf, 1, sizeof(buf), fp); + if (ferror(fp)) + { + libpq_append_conn_error(conn, "could not read from command: %m"); + pclose(fp); + free(command); + unlink(tmpfile); + goto fail; + } + else if (!feof(fp)) + { + libpq_append_conn_error(conn, "output from command too long"); + pclose(fp); + free(command); + unlink(tmpfile); + goto fail; + } + rc = pclose(fp); + if (rc != 0) + { + /* + * XXX would like to use wait_result_to_str(rc) but that + * cannot be called from libpq because it calls exit() + */ + libpq_append_conn_error(conn, "could not run command \"%s\"", command); + free(command); + unlink(tmpfile); + goto fail; + } + free(command); + unlink(tmpfile); + + result = malloc(nread); + if (!result) + { + libpq_append_conn_error(conn, "out of memory"); + goto fail; + } + memcpy(result, buf, nread); + *tolen = nread; + } + else + { + libpq_append_conn_error(conn, "CMK lookup scheme \"%s\" not recognized", sep + 1); + goto fail; + } + } + } + + if (!found) + { + libpq_append_conn_error(conn, "no CMK lookup found for realm \"%s\"", cmk->cmkrealm); + } + +fail: + free(cmklookup); + return result; +} + +/* + * pqSaveColumnEncryptionKey - save column encryption key sent by backend + */ +int +pqSaveColumnEncryptionKey(PGconn *conn, int keyid, int cmkid, int cmkalg, const unsigned char *value, int len) +{ + PGCMK *cmk = NULL; + unsigned char *plainval = NULL; + int plainvallen = 0; + bool found; + + for (int i = 0; i < conn->ncmks; i++) + { + if (conn->cmks[i].cmkid == cmkid) + { + cmk = &conn->cmks[i]; + break; + } + } + + if (!cmk) + return EOF; + + plainval = decrypt_cek(conn, cmk, cmkalg, len, value, &plainvallen); + if (!plainval) + return EOF; + + found = false; + for (int i = 0; i < conn->nceks; i++) + { + struct pg_cek *checkcek = &conn->ceks[i]; + + /* replace existing? */ + if (checkcek->cekid == keyid) + { + free(checkcek->cekdata); + checkcek->cekdata = plainval; + checkcek->cekdatalen = plainvallen; + found = true; + break; + } + } + + /* append new? */ + if (!found) + { + int newnceks; + struct pg_cek *newceks; + struct pg_cek *newcek; + + newnceks = conn->nceks + 1; + if (newnceks <= 0) + { + free(plainval); + return EOF; + } + newceks = realloc(conn->ceks, newnceks * sizeof(struct pg_cek)); + if (!newceks) + { + free(plainval); + return EOF; + } + + newcek = &newceks[newnceks - 1]; + newcek->cekid = keyid; + newcek->cekdata = plainval; + newcek->cekdatalen = plainvallen; + + conn->nceks = newnceks; + conn->ceks = newceks; + } + + return 0; +} /* * pqRowProcessor @@ -1251,6 +1662,43 @@ pqRowProcessor(PGconn *conn, const char **errmsgp) bool isbinary = (res->attDescs[i].format != 0); char *val; + if (res->attDescs[i].cekid) + { + /* encrypted column */ +#ifdef USE_SSL + PGCEK *cek = NULL; + + if (!isbinary) + { + *errmsgp = libpq_gettext("encrypted column was not sent in binary format"); + goto fail; + } + + for (int j = 0; j < conn->nceks; j++) + { + if (conn->ceks[j].cekid == res->attDescs[i].cekid) + { + cek = &conn->ceks[j]; + break; + } + } + if (!cek) + { + *errmsgp = libpq_gettext("column encryption key not found"); + goto fail; + } + + val = (char *) decrypt_value(res, cek, res->attDescs[i].cekalg, + (const unsigned char *) columns[i].value, clen, errmsgp); + if (val == NULL) + goto fail; +#else + *errmsgp = libpq_gettext("column encryption not supported by this build"); + goto fail; +#endif + } + else + { val = (char *) pqResultAlloc(res, clen + 1, isbinary); if (val == NULL) goto fail; @@ -1258,6 +1706,7 @@ pqRowProcessor(PGconn *conn, const char **errmsgp) /* copy and zero-terminate the data (even if it's binary) */ memcpy(val, columns[i].value, clen); val[clen] = '\0'; + } tup[i].len = clen; tup[i].value = val; @@ -1500,6 +1949,8 @@ PQsendQueryParams(PGconn *conn, const int *paramFormats, int resultFormat) { + PGresult *paramDesc = NULL; + if (!PQsendQueryStart(conn, true)) return 0; @@ -1516,6 +1967,37 @@ PQsendQueryParams(PGconn *conn, return 0; } + if (conn->column_encryption_enabled) + { + PGresult *res; + bool error; + + if (conn->pipelineStatus != PQ_PIPELINE_OFF) + { + libpq_append_conn_error(conn, "synchronous command execution functions are not allowed in pipeline mode"); + return 0; + } + + if (!PQsendPrepare(conn, "", command, nParams, paramTypes)) + return 0; + error = false; + while ((res = PQgetResult(conn)) != NULL) + { + if (PQresultStatus(res) != PGRES_COMMAND_OK) + error = true; + PQclear(res); + } + if (error) + return 0; + + paramDesc = PQdescribePrepared(conn, ""); + if (PQresultStatus(paramDesc) != PGRES_COMMAND_OK) + return 0; + + command = NULL; + paramTypes = NULL; + } + return PQsendQueryGuts(conn, command, "", /* use unnamed statement */ @@ -1524,7 +2006,8 @@ PQsendQueryParams(PGconn *conn, paramValues, paramLengths, paramFormats, - resultFormat); + resultFormat, + paramDesc); } /* @@ -1639,6 +2122,24 @@ PQsendQueryPrepared(PGconn *conn, const int *paramLengths, const int *paramFormats, int resultFormat) +{ + return PQsendQueryPreparedDescribed(conn, stmtName, nParams, paramValues, paramLengths, paramFormats, resultFormat, NULL); +} + +/* + * PQsendQueryPreparedDescribed + * Like PQsendQueryPrepared, but with additional argument to pass + * parameter descriptions, for column encryption. + */ +int +PQsendQueryPreparedDescribed(PGconn *conn, + const char *stmtName, + int nParams, + const char *const *paramValues, + const int *paramLengths, + const int *paramFormats, + int resultFormat, + PGresult *paramDesc) { if (!PQsendQueryStart(conn, true)) return 0; @@ -1664,7 +2165,8 @@ PQsendQueryPrepared(PGconn *conn, paramValues, paramLengths, paramFormats, - resultFormat); + resultFormat, + paramDesc); } /* @@ -1762,7 +2264,8 @@ PQsendQueryGuts(PGconn *conn, const char *const *paramValues, const int *paramLengths, const int *paramFormats, - int resultFormat) + int resultFormat, + PGresult *paramDesc) { int i; PGcmdQueueEntry *entry; @@ -1810,13 +2313,47 @@ PQsendQueryGuts(PGconn *conn, goto sendFailed; /* Send parameter formats */ - if (nParams > 0 && paramFormats) + if (nParams > 0 && (paramFormats || (paramDesc && paramDesc->paramDescs))) { if (pqPutInt(nParams, 2, conn) < 0) goto sendFailed; + for (i = 0; i < nParams; i++) { - if (pqPutInt(paramFormats[i], 2, conn) < 0) + int format = paramFormats ? paramFormats[i] : 0; + + /* Check force column encryption */ + if (format & 0x10) + { + if (!(paramDesc && + paramDesc->paramDescs && + paramDesc->paramDescs[i].cekid)) + { + libpq_append_conn_error(conn, "parameter with forced encryption is not to be encrypted"); + goto sendFailed; + } + } + format &= ~0x10; + + if (paramDesc && paramDesc->paramDescs) + { + PGresParamDesc *pd = ¶mDesc->paramDescs[i]; + + if (pd->cekid) + { + if (format != 0) + { + libpq_append_conn_error(conn, "format must be text for encrypted parameter"); + goto sendFailed; + } + /* Send encrypted value in binary */ + format = 1; + /* And mark it as encrypted */ + format |= 0x10; + } + } + + if (pqPutInt(format, 2, conn) < 0) goto sendFailed; } } @@ -1835,8 +2372,9 @@ PQsendQueryGuts(PGconn *conn, if (paramValues && paramValues[i]) { int nbytes; + const char *paramValue; - if (paramFormats && paramFormats[i] != 0) + if (paramFormats && (paramFormats[i] & 0x01) != 0) { /* binary parameter */ if (paramLengths) @@ -1852,9 +2390,53 @@ PQsendQueryGuts(PGconn *conn, /* text parameter, do not use paramLengths */ nbytes = strlen(paramValues[i]); } + + paramValue = paramValues[i]; + + if (paramDesc && paramDesc->paramDescs && paramDesc->paramDescs[i].cekid) + { + /* encrypted column */ +#ifdef USE_SSL + bool enc_det = (paramDesc->paramDescs[i].flags & 0x01) != 0; + PGCEK *cek = NULL; + char *enc_paramValue; + int enc_nbytes = nbytes; + + for (int j = 0; j < conn->nceks; j++) + { + if (conn->ceks[j].cekid == paramDesc->paramDescs[i].cekid) + { + cek = &conn->ceks[j]; + break; + } + } + if (!cek) + { + libpq_append_conn_error(conn, "column encryption key not found"); + goto sendFailed; + } + + enc_paramValue = (char *) encrypt_value(conn, cek, paramDesc->paramDescs[i].cekalg, + (const unsigned char *) paramValue, &enc_nbytes, enc_det); + if (!enc_paramValue) + goto sendFailed; + + if (pqPutInt(enc_nbytes, 4, conn) < 0 || + pqPutnchar(enc_paramValue, enc_nbytes, conn) < 0) + goto sendFailed; + + free(enc_paramValue); +#else + libpq_append_conn_error(conn, "column encryption not supported by this build"); + goto sendFailed; +#endif + } + else + { if (pqPutInt(nbytes, 4, conn) < 0 || - pqPutnchar(paramValues[i], nbytes, conn) < 0) + pqPutnchar(paramValue, nbytes, conn) < 0) goto sendFailed; + } } else { @@ -2290,12 +2872,31 @@ PQexecPrepared(PGconn *conn, const int *paramLengths, const int *paramFormats, int resultFormat) +{ + return PQexecPreparedDescribed(conn, stmtName, nParams, paramValues, paramLengths, paramFormats, resultFormat, NULL); +} + +/* + * PQexecPreparedDescribed + * Like PQexecPrepared, but with additional argument to pass parameter + * descriptions, for column encryption. + */ +PGresult * +PQexecPreparedDescribed(PGconn *conn, + const char *stmtName, + int nParams, + const char *const *paramValues, + const int *paramLengths, + const int *paramFormats, + int resultFormat, + PGresult *paramDesc) { if (!PQexecStart(conn)) return NULL; - if (!PQsendQueryPrepared(conn, stmtName, - nParams, paramValues, paramLengths, - paramFormats, resultFormat)) + if (!PQsendQueryPreparedDescribed(conn, stmtName, + nParams, paramValues, paramLengths, + paramFormats, + resultFormat, paramDesc)) return NULL; return PQexecFinish(conn); } @@ -3539,7 +4140,17 @@ PQfformat(const PGresult *res, int field_num) if (!check_field_number(res, field_num)) return 0; if (res->attDescs) + { + /* + * An encrypted column is always presented to the application in text + * format. The .format field applies to the ciphertext, which might + * be in either format, but the plaintext inside is always in text + * format. + */ + if (res->attDescs[field_num].cekid != 0) + return 0; return res->attDescs[field_num].format; + } else return 0; } @@ -3577,6 +4188,17 @@ PQfmod(const PGresult *res, int field_num) return 0; } +int +PQfisencrypted(const PGresult *res, int field_num) +{ + if (!check_field_number(res, field_num)) + return false; + if (res->attDescs) + return (res->attDescs[field_num].cekid != 0); + else + return false; +} + char * PQcmdStatus(PGresult *res) { @@ -3762,6 +4384,17 @@ PQparamtype(const PGresult *res, int param_num) return InvalidOid; } +int +PQparamisencrypted(const PGresult *res, int param_num) +{ + if (!check_param_number(res, param_num)) + return false; + if (res->paramDescs) + return (res->paramDescs[param_num].cekid != 0); + else + return false; +} + /* PQsetnonblocking: * sets the PGconn's database connection non-blocking if the arg is true diff --git a/src/interfaces/libpq/fe-protocol3.c b/src/interfaces/libpq/fe-protocol3.c index 364bad2b88..4bdb45b503 100644 --- a/src/interfaces/libpq/fe-protocol3.c +++ b/src/interfaces/libpq/fe-protocol3.c @@ -43,6 +43,8 @@ static int getRowDescriptions(PGconn *conn, int msgLength); static int getParamDescriptions(PGconn *conn, int msgLength); static int getAnotherTuple(PGconn *conn, int msgLength); static int getParameterStatus(PGconn *conn); +static int getColumnMasterKey(PGconn *conn); +static int getColumnEncryptionKey(PGconn *conn); static int getNotify(PGconn *conn); static int getCopyStart(PGconn *conn, ExecStatusType copytype); static int getReadyForQuery(PGconn *conn); @@ -297,6 +299,12 @@ pqParseInput3(PGconn *conn) if (pqGetInt(&(conn->be_key), 4, conn)) return; break; + case 'y': /* Column Master Key */ + getColumnMasterKey(conn); + break; + case 'Y': /* Column Encryption Key */ + getColumnEncryptionKey(conn); + break; case 'T': /* Row Description */ if (conn->error_result || (conn->result != NULL && @@ -547,6 +555,8 @@ getRowDescriptions(PGconn *conn, int msgLength) int typlen; int atttypmod; int format; + int cekid; + int cekalg; if (pqGets(&conn->workBuffer, conn) || pqGetInt(&tableid, 4, conn) || @@ -561,6 +571,21 @@ getRowDescriptions(PGconn *conn, int msgLength) goto advance_and_error; } + if (conn->column_encryption_enabled) + { + if (pqGetInt(&cekid, 4, conn) || + pqGetInt(&cekalg, 4, conn)) + { + errmsg = libpq_gettext("insufficient data in \"T\" message"); + goto advance_and_error; + } + } + else + { + cekid = 0; + cekalg = 0; + } + /* * Since pqGetInt treats 2-byte integers as unsigned, we need to * coerce these results to signed form. @@ -582,8 +607,10 @@ getRowDescriptions(PGconn *conn, int msgLength) result->attDescs[i].typid = typid; result->attDescs[i].typlen = typlen; result->attDescs[i].atttypmod = atttypmod; + result->attDescs[i].cekid = cekid; + result->attDescs[i].cekalg = cekalg; - if (format != 1) + if ((format & 0x0F) != 1) result->binary = 0; } @@ -685,10 +712,31 @@ getParamDescriptions(PGconn *conn, int msgLength) for (i = 0; i < nparams; i++) { int typid; + int cekid; + int cekalg; + int flags; if (pqGetInt(&typid, 4, conn)) goto not_enough_data; + if (conn->column_encryption_enabled) + { + if (pqGetInt(&cekid, 4, conn)) + goto not_enough_data; + if (pqGetInt(&cekalg, 4, conn)) + goto not_enough_data; + if (pqGetInt(&flags, 2, conn)) + goto not_enough_data; + } + else + { + cekid = 0; + cekalg = 0; + flags = 0; + } result->paramDescs[i].typid = typid; + result->paramDescs[i].cekid = cekid; + result->paramDescs[i].cekalg = cekalg; + result->paramDescs[i].flags = flags; } /* Success! */ @@ -1468,6 +1516,92 @@ getParameterStatus(PGconn *conn) return 0; } +/* + * Attempt to read a ColumnMasterKey message. + * Entry: 'y' message type and length have already been consumed. + * Exit: returns 0 if successfully consumed message. + * returns EOF if not enough data. + */ +static int +getColumnMasterKey(PGconn *conn) +{ + int keyid; + char *keyname; + char *keyrealm; + int ret; + + /* Get the key ID */ + if (pqGetInt(&keyid, 4, conn) != 0) + return EOF; + /* Get the key name */ + if (pqGets(&conn->workBuffer, conn) != 0) + return EOF; + keyname = strdup(conn->workBuffer.data); + if (!keyname) + return EOF; + /* Get the key realm */ + if (pqGets(&conn->workBuffer, conn) != 0) + return EOF; + keyrealm = strdup(conn->workBuffer.data); + if (!keyrealm) + return EOF; + /* And save it */ + ret = pqSaveColumnMasterKey(conn, keyid, keyname, keyrealm); + if (ret != 0) + pqSaveErrorResult(conn); + + free(keyname); + free(keyrealm); + + return ret; +} + +/* + * Attempt to read a ColumnEncryptionKey message. + * Entry: 'Y' message type and length have already been consumed. + * Exit: returns 0 if successfully consumed message. + * returns EOF if not enough data. + */ +static int +getColumnEncryptionKey(PGconn *conn) +{ + int keyid; + int cmkid; + int cmkalg; + char *buf; + int vallen; + int ret; + + /* Get the key ID */ + if (pqGetInt(&keyid, 4, conn) != 0) + return EOF; + /* Get the CMK ID */ + if (pqGetInt(&cmkid, 4, conn) != 0) + return EOF; + /* Get the CMK algorithm */ + if (pqGetInt(&cmkalg, 4, conn) != 0) + return EOF; + /* Get the key data len */ + if (pqGetInt(&vallen, 4, conn) != 0) + return EOF; + /* Get the key data */ + buf = malloc(vallen); + if (!buf) + return EOF; + if (pqGetnchar(buf, vallen, conn) != 0) + { + free(buf); + return EOF; + } + /* And save it */ + ret = pqSaveColumnEncryptionKey(conn, keyid, cmkid, cmkalg, (unsigned char *) buf, vallen); + if (ret != 0) + pqSaveErrorResult(conn); + + free(buf); + + return ret; +} /* * Attempt to read a Notify response message. @@ -2286,6 +2420,9 @@ build_startup_packet(const PGconn *conn, char *packet, if (conn->client_encoding_initial && conn->client_encoding_initial[0]) ADD_STARTUP_OPTION("client_encoding", conn->client_encoding_initial); + if (conn->column_encryption_enabled) + ADD_STARTUP_OPTION("_pq_.column_encryption", "1"); + /* Add any environment-driven GUC settings needed */ for (next_eo = options; next_eo->envName; next_eo++) { diff --git a/src/interfaces/libpq/fe-trace.c b/src/interfaces/libpq/fe-trace.c index 5d68cf2eb3..86b7e64e1f 100644 --- a/src/interfaces/libpq/fe-trace.c +++ b/src/interfaces/libpq/fe-trace.c @@ -450,7 +450,8 @@ pqTraceOutputS(FILE *f, const char *message, int *cursor) /* ParameterDescription */ static void -pqTraceOutputt(FILE *f, const char *message, int *cursor, bool regress) +pqTraceOutputt(FILE *f, const char *message, int *cursor, bool regress, + bool column_encryption_enabled) { int nfields; @@ -458,12 +459,21 @@ pqTraceOutputt(FILE *f, const char *message, int *cursor, bool regress) nfields = pqTraceOutputInt16(f, message, cursor); for (int i = 0; i < nfields; i++) + { pqTraceOutputInt32(f, message, cursor, regress); + if (column_encryption_enabled) + { + pqTraceOutputInt32(f, message, cursor, regress); + pqTraceOutputInt32(f, message, cursor, false); + pqTraceOutputInt16(f, message, cursor); + } + } } /* RowDescription */ static void -pqTraceOutputT(FILE *f, const char *message, int *cursor, bool regress) +pqTraceOutputT(FILE *f, const char *message, int *cursor, bool regress, + bool column_encryption_enabled) { int nfields; @@ -479,6 +489,11 @@ pqTraceOutputT(FILE *f, const char *message, int *cursor, bool regress) pqTraceOutputInt16(f, message, cursor); pqTraceOutputInt32(f, message, cursor, false); pqTraceOutputInt16(f, message, cursor); + if (column_encryption_enabled) + { + pqTraceOutputInt32(f, message, cursor, regress); + pqTraceOutputInt32(f, message, cursor, false); + } } } @@ -514,6 +529,30 @@ pqTraceOutputW(FILE *f, const char *message, int *cursor, int length) pqTraceOutputInt16(f, message, cursor); } +/* ColumnMasterKey */ +static void +pqTraceOutputy(FILE *f, const char *message, int *cursor, bool regress) +{ + fprintf(f, "ColumnMasterKey\t"); + pqTraceOutputInt32(f, message, cursor, regress); + pqTraceOutputString(f, message, cursor, false); + pqTraceOutputString(f, message, cursor, false); +} + +/* ColumnEncryptionKey */ +static void +pqTraceOutputY(FILE *f, const char *message, int *cursor, bool regress) +{ + int len; + + fprintf(f, "ColumnEncryptionKey\t"); + pqTraceOutputInt32(f, message, cursor, regress); + pqTraceOutputInt32(f, message, cursor, regress); + pqTraceOutputInt32(f, message, cursor, false); + len = pqTraceOutputInt32(f, message, cursor, false); + pqTraceOutputNchar(f, len, message, cursor); +} + /* ReadyForQuery */ static void pqTraceOutputZ(FILE *f, const char *message, int *cursor) @@ -647,10 +686,12 @@ pqTraceOutputMessage(PGconn *conn, const char *message, bool toServer) fprintf(conn->Pfdebug, "Sync"); /* no message content */ break; case 't': /* Parameter Description */ - pqTraceOutputt(conn->Pfdebug, message, &logCursor, regress); + pqTraceOutputt(conn->Pfdebug, message, &logCursor, regress, + conn->column_encryption_enabled); break; case 'T': /* Row Description */ - pqTraceOutputT(conn->Pfdebug, message, &logCursor, regress); + pqTraceOutputT(conn->Pfdebug, message, &logCursor, regress, + conn->column_encryption_enabled); break; case 'v': /* Negotiate Protocol Version */ pqTraceOutputv(conn->Pfdebug, message, &logCursor); @@ -665,6 +706,12 @@ pqTraceOutputMessage(PGconn *conn, const char *message, bool toServer) fprintf(conn->Pfdebug, "Terminate"); /* No message content */ break; + case 'y': + pqTraceOutputy(conn->Pfdebug, message, &logCursor, regress); + break; + case 'Y': + pqTraceOutputY(conn->Pfdebug, message, &logCursor, regress); + break; case 'Z': /* Ready For Query */ pqTraceOutputZ(conn->Pfdebug, message, &logCursor); break; diff --git a/src/interfaces/libpq/libpq-fe.h b/src/interfaces/libpq/libpq-fe.h index b7df3224c0..d4c91dce74 100644 --- a/src/interfaces/libpq/libpq-fe.h +++ b/src/interfaces/libpq/libpq-fe.h @@ -267,6 +267,8 @@ typedef struct pgresAttDesc Oid typid; /* type id */ int typlen; /* type size */ int atttypmod; /* type-specific modifier info */ + Oid cekid; + int cekalg; } PGresAttDesc; /* ---------------- @@ -438,6 +440,14 @@ extern PGresult *PQexecPrepared(PGconn *conn, const int *paramLengths, const int *paramFormats, int resultFormat); +extern PGresult *PQexecPreparedDescribed(PGconn *conn, + const char *stmtName, + int nParams, + const char *const *paramValues, + const int *paramLengths, + const int *paramFormats, + int resultFormat, + PGresult *paramDesc); /* Interface for multiple-result or asynchronous queries */ #define PQ_QUERY_PARAM_MAX_LIMIT 65535 @@ -461,6 +471,14 @@ extern int PQsendQueryPrepared(PGconn *conn, const int *paramLengths, const int *paramFormats, int resultFormat); +extern int PQsendQueryPreparedDescribed(PGconn *conn, + const char *stmtName, + int nParams, + const char *const *paramValues, + const int *paramLengths, + const int *paramFormats, + int resultFormat, + PGresult *paramDesc); extern int PQsetSingleRowMode(PGconn *conn); extern PGresult *PQgetResult(PGconn *conn); @@ -531,6 +549,7 @@ extern int PQfformat(const PGresult *res, int field_num); extern Oid PQftype(const PGresult *res, int field_num); extern int PQfsize(const PGresult *res, int field_num); extern int PQfmod(const PGresult *res, int field_num); +extern int PQfisencrypted(const PGresult *res, int field_num); extern char *PQcmdStatus(PGresult *res); extern char *PQoidStatus(const PGresult *res); /* old and ugly */ extern Oid PQoidValue(const PGresult *res); /* new and improved */ @@ -540,6 +559,7 @@ extern int PQgetlength(const PGresult *res, int tup_num, int field_num); extern int PQgetisnull(const PGresult *res, int tup_num, int field_num); extern int PQnparams(const PGresult *res); extern Oid PQparamtype(const PGresult *res, int param_num); +extern int PQparamisencrypted(const PGresult *res, int param_num); /* Describe prepared statements and portals */ extern PGresult *PQdescribePrepared(PGconn *conn, const char *stmt); diff --git a/src/interfaces/libpq/libpq-int.h b/src/interfaces/libpq/libpq-int.h index 512762f999..9783ba7736 100644 --- a/src/interfaces/libpq/libpq-int.h +++ b/src/interfaces/libpq/libpq-int.h @@ -112,6 +112,9 @@ union pgresult_data typedef struct pgresParamDesc { Oid typid; /* type id */ + Oid cekid; + int cekalg; + int flags; } PGresParamDesc; /* @@ -343,6 +346,26 @@ typedef struct pg_conn_host * found in password file. */ } pg_conn_host; +/* + * Column encryption support data + */ + +/* column master key */ +typedef struct pg_cmk +{ + Oid cmkid; + char *cmkname; + char *cmkrealm; +} PGCMK; + +/* column encryption key */ +typedef struct pg_cek +{ + Oid cekid; + unsigned char *cekdata; /* (decrypted) */ + size_t cekdatalen; +} PGCEK; + /* * PGconn stores all the state data associated with a single connection * to a backend. @@ -396,6 +419,8 @@ struct pg_conn char *ssl_min_protocol_version; /* minimum TLS protocol version */ char *ssl_max_protocol_version; /* maximum TLS protocol version */ char *target_session_attrs; /* desired session properties */ + char *cmklookup; /* CMK lookup specification */ + char *column_encryption_setting; /* column_encryption connection parameter (0 or 1) */ /* Optional file to write trace info to */ FILE *Pfdebug; @@ -477,6 +502,13 @@ struct pg_conn PGVerbosity verbosity; /* error/notice message verbosity */ PGContextVisibility show_context; /* whether to show CONTEXT field */ PGlobjfuncs *lobjfuncs; /* private state for large-object access fns */ + bool column_encryption_enabled; /* parsed version of column_encryption_setting */ + + /* Column encryption support data */ + int ncmks; + PGCMK *cmks; + int nceks; + PGCEK *ceks; /* Buffer for data received from backend and not yet processed */ char *inBuffer; /* currently allocated buffer */ @@ -673,6 +705,10 @@ extern void pqSaveMessageField(PGresult *res, char code, const char *value); extern void pqSaveParameterStatus(PGconn *conn, const char *name, const char *value); +extern int pqSaveColumnMasterKey(PGconn *conn, int keyid, const char *keyname, + const char *keyrealm); +extern int pqSaveColumnEncryptionKey(PGconn *conn, int keyid, int cmkid, int cmkalg, + const unsigned char *value, int len); extern int pqRowProcessor(PGconn *conn, const char **errmsgp); extern void pqCommandQueueAdvance(PGconn *conn); extern int PQsendQueryContinue(PGconn *conn, const char *query); diff --git a/src/interfaces/libpq/meson.build b/src/interfaces/libpq/meson.build index 8e696f1183..a3e2d2e98b 100644 --- a/src/interfaces/libpq/meson.build +++ b/src/interfaces/libpq/meson.build @@ -27,6 +27,7 @@ endif if ssl.found() libpq_sources += files('fe-secure-common.c') + libpq_sources += files('fe-encrypt-openssl.c') libpq_sources += files('fe-secure-openssl.c') endif diff --git a/src/interfaces/libpq/nls.mk b/src/interfaces/libpq/nls.mk index 4df544ecef..0c36aa5f32 100644 --- a/src/interfaces/libpq/nls.mk +++ b/src/interfaces/libpq/nls.mk @@ -1,6 +1,6 @@ # src/interfaces/libpq/nls.mk CATALOG_NAME = libpq -GETTEXT_FILES = fe-auth.c fe-auth-scram.c fe-connect.c fe-exec.c fe-gssapi-common.c fe-lobj.c fe-misc.c fe-protocol3.c fe-secure.c fe-secure-common.c fe-secure-gssapi.c fe-secure-openssl.c win32.c ../../port/thread.c +GETTEXT_FILES = fe-auth.c fe-auth-scram.c fe-connect.c fe-encrypt-openssl.c fe-exec.c fe-gssapi-common.c fe-lobj.c fe-misc.c fe-protocol3.c fe-secure.c fe-secure-common.c fe-secure-gssapi.c fe-secure-openssl.c win32.c ../../port/thread.c GETTEXT_TRIGGERS = libpq_append_conn_error:2 \ libpq_append_error:2 \ libpq_gettext pqInternalNotice:2 diff --git a/src/interfaces/libpq/test/.gitignore b/src/interfaces/libpq/test/.gitignore index 6ba78adb67..1846594ec5 100644 --- a/src/interfaces/libpq/test/.gitignore +++ b/src/interfaces/libpq/test/.gitignore @@ -1,2 +1,3 @@ +/libpq_test_encrypt /libpq_testclient /libpq_uri_regress diff --git a/src/interfaces/libpq/test/Makefile b/src/interfaces/libpq/test/Makefile index 75ac08f943..b1ebab90d4 100644 --- a/src/interfaces/libpq/test/Makefile +++ b/src/interfaces/libpq/test/Makefile @@ -15,10 +15,17 @@ override CPPFLAGS := -I$(libpq_srcdir) $(CPPFLAGS) LDFLAGS_INTERNAL += $(libpq_pgport) PROGS = libpq_testclient libpq_uri_regress +ifeq ($(with_ssl),openssl) +PROGS += libpq_test_encrypt +endif + all: $(PROGS) $(PROGS): $(WIN32RES) +libpq_test_encrypt: ../fe-encrypt-openssl.c + $(CC) $(CPPFLAGS) -DTEST_ENCRYPT $(CFLAGS) $^ $(LDFLAGS) $(LDFLAGS_EX) $(LIBS) -o $@$(X) + clean distclean maintainer-clean: rm -f $(PROGS) *.o diff --git a/src/interfaces/libpq/test/meson.build b/src/interfaces/libpq/test/meson.build index 017f729d43..fea613dd63 100644 --- a/src/interfaces/libpq/test/meson.build +++ b/src/interfaces/libpq/test/meson.build @@ -34,3 +34,5 @@ executable('libpq_testclient', 'install': false, } ) + +# TODO: libpq_test_encrypt diff --git a/src/test/Makefile b/src/test/Makefile index dbd3192874..c8ba170503 100644 --- a/src/test/Makefile +++ b/src/test/Makefile @@ -24,7 +24,7 @@ ifeq ($(with_ldap),yes) SUBDIRS += ldap endif ifeq ($(with_ssl),openssl) -SUBDIRS += ssl +SUBDIRS += column_encryption ssl endif # Test suites that are not safe by default but can be run if selected @@ -36,7 +36,7 @@ export PG_TEST_EXTRA # clean" etc to recurse into them. (We must filter out those that we # have conditionally included into SUBDIRS above, else there will be # make confusion.) -ALWAYS_SUBDIRS = $(filter-out $(SUBDIRS),examples kerberos icu ldap ssl) +ALWAYS_SUBDIRS = $(filter-out $(SUBDIRS),examples kerberos icu ldap ssl column_encryption) # We want to recurse to all subdirs for all standard targets, except that # installcheck and install should not recurse into the subdirectory "modules". diff --git a/src/test/column_encryption/.gitignore b/src/test/column_encryption/.gitignore new file mode 100644 index 0000000000..456dbf69d2 --- /dev/null +++ b/src/test/column_encryption/.gitignore @@ -0,0 +1,3 @@ +/test_client +# Generated by test suite +/tmp_check/ diff --git a/src/test/column_encryption/Makefile b/src/test/column_encryption/Makefile new file mode 100644 index 0000000000..764cadf550 --- /dev/null +++ b/src/test/column_encryption/Makefile @@ -0,0 +1,31 @@ +#------------------------------------------------------------------------- +# +# Makefile for src/test/column_encryption +# +# Portions Copyright (c) 1996-2023, PostgreSQL Global Development Group +# Portions Copyright (c) 1994, Regents of the University of California +# +# src/test/column_encryption/Makefile +# +#------------------------------------------------------------------------- + +subdir = src/test/column_encryption +top_builddir = ../../.. +include $(top_builddir)/src/Makefile.global + +export OPENSSL + +override CPPFLAGS := -I$(libpq_srcdir) $(CPPFLAGS) +LDFLAGS_INTERNAL += -L$(top_builddir)/src/fe_utils -lpgfeutils $(libpq_pgport) + +all: test_client + +check: all + $(prove_check) + +installcheck: + $(prove_installcheck) + +clean distclean maintainer-clean: + rm -f test_client.o test_client + rm -rf tmp_check diff --git a/src/test/column_encryption/meson.build b/src/test/column_encryption/meson.build new file mode 100644 index 0000000000..84cfa84e12 --- /dev/null +++ b/src/test/column_encryption/meson.build @@ -0,0 +1,23 @@ +column_encryption_test_client = executable('test_client', + files('test_client.c'), + dependencies: [frontend_code, libpq], + kwargs: default_bin_args + { + 'install': false, + }, +) +testprep_targets += column_encryption_test_client + +tests += { + 'name': 'column_encryption', + 'sd': meson.current_source_dir(), + 'bd': meson.current_build_dir(), + 'tap': { + 'tests': [ + 't/001_column_encryption.pl', + 't/002_cmk_rotation.pl', + ], + 'env': { + 'OPENSSL': openssl.path(), + }, + }, +} diff --git a/src/test/column_encryption/t/001_column_encryption.pl b/src/test/column_encryption/t/001_column_encryption.pl new file mode 100644 index 0000000000..2de31632d0 --- /dev/null +++ b/src/test/column_encryption/t/001_column_encryption.pl @@ -0,0 +1,238 @@ +# Copyright (c) 2021-2023, PostgreSQL Global Development Group + +use strict; +use warnings; +use PostgreSQL::Test::Cluster; +use PostgreSQL::Test::Utils; +use Test::More; + +my $openssl = $ENV{OPENSSL}; + +# Can be changed manually for testing other algorithms. Note that +# RSAES_OAEP_SHA_256 requires OpenSSL 1.1.0. +my $cmkalg = 'RSAES_OAEP_SHA_1'; + +my $node = PostgreSQL::Test::Cluster->new('node'); +$node->init; +$node->start; + + +sub create_cmk +{ + my ($cmkname) = @_; + my $cmkfilename = "${PostgreSQL::Test::Utils::tmp_check}/${cmkname}.pem"; + system_or_bail $openssl, 'genpkey', '-algorithm', 'rsa', '-out', $cmkfilename; + $node->safe_psql('postgres', qq{CREATE COLUMN MASTER KEY ${cmkname}}); + return $cmkfilename; +} + +sub create_cek +{ + my ($cekname, $bytes, $cmkname, $cmkfilename) = @_; + + my $digest = $cmkalg; + $digest =~ s/.*(?=SHA)//; + $digest =~ s/_//g; + + # generate random bytes + system_or_bail $openssl, 'rand', '-out', "${PostgreSQL::Test::Utils::tmp_check}/${cekname}.bin", $bytes; + + # encrypt CEK using CMK + my @cmd = ( + $openssl, 'pkeyutl', '-encrypt', + '-inkey', $cmkfilename, + '-pkeyopt', 'rsa_padding_mode:oaep', + '-in', "${PostgreSQL::Test::Utils::tmp_check}/${cekname}.bin", + '-out', "${PostgreSQL::Test::Utils::tmp_check}/${cekname}.bin.enc" + ); + if ($digest ne 'SHA1') + { + # These options require OpenSSL >=1.1.0, so if the digest is + # SHA1, which is the default, omit the options. + push @cmd, + '-pkeyopt', "rsa_mgf1_md:$digest", + '-pkeyopt', "rsa_oaep_md:$digest"; + } + system_or_bail @cmd; + + my $cekenchex = unpack('H*', slurp_file "${PostgreSQL::Test::Utils::tmp_check}/${cekname}.bin.enc"); + + # create CEK in database + $node->safe_psql('postgres', qq{CREATE COLUMN ENCRYPTION KEY ${cekname} WITH VALUES (column_master_key = ${cmkname}, algorithm = '${cmkalg}', encrypted_value = '\\x${cekenchex}');}); + + return; +} + + +my $cmk1filename = create_cmk('cmk1'); +my $cmk2filename = create_cmk('cmk2'); +create_cek('cek1', 48, 'cmk1', $cmk1filename); +create_cek('cek2', 72, 'cmk2', $cmk2filename); + +$ENV{'PGCOLUMNENCRYPTION'} = '1'; +$ENV{'PGCMKLOOKUP'} = '*=file:' . ${PostgreSQL::Test::Utils::tmp_check} . '/%k.pem'; + + +$node->safe_psql('postgres', qq{ +CREATE TABLE tbl1 ( + a int, + b text ENCRYPTED WITH (column_encryption_key = cek1), + c smallint ENCRYPTED WITH (column_encryption_key = cek1) +); +}); + +$node->safe_psql('postgres', q{ +INSERT INTO tbl1 (a, b, c) VALUES (1, $1, $2) \bind 'val1' 11 \g +INSERT INTO tbl1 (a, b, c) VALUES (2, $1, $2) \bind 'val2' 22 \g +}); + +# Expected ciphertext length is 2 blocks of AES output (2 * 16) plus +# half SHA-256 output (16) in hex encoding: (2 * 16 + 16) * 2 = 96 +like($node->safe_psql('postgres', q{COPY (SELECT * FROM tbl1) TO STDOUT}), + qr/1\tencrypted\$[0-9a-f]{96}\tencrypted\$[0-9a-f]{96}\n2\tencrypted\$[0-9a-f]{96}\tencrypted\$[0-9a-f]{96}/, + 'inserted data is encrypted'); + +my $result; + +$result = $node->safe_psql('postgres', q{SELECT a, b, c FROM tbl1 \gdesc}); +is($result, + q(a|integer +b|text +c|smallint), + 'query result description has original type'); + +$result = $node->safe_psql('postgres', q{SELECT a, b, c FROM tbl1}); +is($result, + q(1|val1|11 +2|val2|22), + 'decrypted query result'); + +{ + local $ENV{'PGCMKLOOKUP'} = '*=run:broken %k "%p"'; + $result = $node->psql('postgres', q{SELECT a, b, c FROM tbl1}); + isnt($result, 0, 'query fails with broken cmklookup run setting'); +} + +TODO: { + local $TODO = 'path not being passed correctly on Windows' if $windows_os; + + local $ENV{'PGCMKLOOKUP'} = "*=run:perl ./test_run_decrypt.pl '${PostgreSQL::Test::Utils::tmp_check}' %k %a '%p'"; + + my $stdout; + $result = $node->psql('postgres', q{SELECT a, b, c FROM tbl1}, stdout => \$stdout); + is($stdout, + q(1|val1|11 +2|val2|22), + 'decrypted query result with cmklookup run'); +} + + +$node->command_fails_like(['test_client', 'test1'], qr/not encrypted/, 'test client fails because parameters not encrypted'); + +$result = $node->safe_psql('postgres', q{SELECT a, b, c FROM tbl1}); +is($result, + q(1|val1|11 +2|val2|22), + 'decrypted query result after test client insert'); + +$node->command_ok(['test_client', 'test2'], 'test client test 2'); + +$result = $node->safe_psql('postgres', q{SELECT a, b, c FROM tbl1}); +is($result, + q(1|val1|11 +2|val2|22 +3|val3|33), + 'decrypted query result after test client insert 2'); + +like($node->safe_psql('postgres', q{COPY (SELECT * FROM tbl1 WHERE a = 3) TO STDOUT}), + qr/3\tencrypted\$[0-9a-f]{96}/, + 'inserted data is encrypted'); + + +# Tests with binary format + +# Supplying a parameter in binary format when the parameter is to be +# encrypted results in an error from libpq. +$node->command_fails_like(['test_client', 'test3'], + qr/format must be text for encrypted parameter/, + 'test client fails because to-be-encrypted parameter is in binary format'); + +# Requesting a binary result set still causes any encrypted columns to +# be returned as text from the libpq API. +$node->command_like(['test_client', 'test4'], + qr/<0,0>=1:\n<0,1>=0:val1\n<0,2>=0:11/, + 'binary result set with encrypted columns: encrypted columns returned as text'); + + +# Test UPDATE + +$node->safe_psql('postgres', q{ +UPDATE tbl1 SET b = $2 WHERE a = $1 \bind '3' 'val3upd' \g +}); + +$result = $node->safe_psql('postgres', q{SELECT a, b, c FROM tbl1}); +is($result, + q(1|val1|11 +2|val2|22 +3|val3upd|33), + 'decrypted query result after update'); + + +# Test deterministic encryption + +$node->safe_psql('postgres', qq{ +CREATE TABLE tbl2 ( + a int, + b text ENCRYPTED WITH (encryption_type = deterministic, column_encryption_key = cek1) +); +}); + +$node->safe_psql('postgres', q{ +INSERT INTO tbl2 (a, b) VALUES ($1, $2), ($3, $4), ($5, $6) \bind '1' 'valA' '2' 'valB' '3' 'valA' \g +}); + +$result = $node->safe_psql('postgres', q{SELECT a, b FROM tbl2}); +is($result, + q(1|valA +2|valB +3|valA), + 'decrypted query result in table for deterministic encryption'); + +is($node->safe_psql('postgres', q{SELECT b, count(*) FROM tbl2 GROUP BY b ORDER BY 2}), + q(valB|1 +valA|2), + 'group by deterministically encrypted column'); + + +# Test multiple keys in one table + +$node->safe_psql('postgres', qq{ +CREATE TABLE tbl3 ( + a int, + b text ENCRYPTED WITH (column_encryption_key = cek1), + c text ENCRYPTED WITH (column_encryption_key = cek2, algorithm = 'AEAD_AES_192_CBC_HMAC_SHA_384') +); +}); + +$node->safe_psql('postgres', q{ +INSERT INTO tbl3 (a, b, c) VALUES (1, $1, $2) \bind 'valB1' 'valC1' \g +}); + +$result = $node->safe_psql('postgres', q{SELECT a, b, c FROM tbl3}); +is($result, + q(1|valB1|valC1), + 'decrypted query result multiple keys'); + +$node->safe_psql('postgres', q{ +INSERT INTO tbl3 (a, b, c) VALUES ($1, $2, $3), ($4, $5, $6) \bind '2' 'valB2' 'valC2' '3' 'valB3' 'valC3' \g +}); + +$result = $node->safe_psql('postgres', q{SELECT a, b, c FROM tbl3}); +is($result, + q(1|valB1|valC1 +2|valB2|valC2 +3|valB3|valC3), + 'decrypted query result multiple keys after second insert'); + + +done_testing(); diff --git a/src/test/column_encryption/t/002_cmk_rotation.pl b/src/test/column_encryption/t/002_cmk_rotation.pl new file mode 100644 index 0000000000..bb3b170d3b --- /dev/null +++ b/src/test/column_encryption/t/002_cmk_rotation.pl @@ -0,0 +1,112 @@ +# Copyright (c) 2021-2023, PostgreSQL Global Development Group + +# Test column master key rotation. First, we generate CMK1 and a CEK +# encrypted with it. Then we add a CMK2 and encrypt the CEK with it +# as well. (Recall that a CEK can be associated with multiple CMKs, +# for this reason. That's why pg_colenckeydata is split out from +# pg_colenckey.) Then we remove CMK1. We test that we can get +# decrypted query results at each step. + +use strict; +use warnings; +use PostgreSQL::Test::Cluster; +use PostgreSQL::Test::Utils; +use Test::More; + +my $openssl = $ENV{OPENSSL}; + +my $cmkalg = 'RSAES_OAEP_SHA_1'; + +my $node = PostgreSQL::Test::Cluster->new('node'); +$node->init; +$node->start; + + +sub create_cmk +{ + my ($cmkname) = @_; + my $cmkfilename = "${PostgreSQL::Test::Utils::tmp_check}/${cmkname}.pem"; + system_or_bail $openssl, 'genpkey', '-algorithm', 'rsa', '-out', $cmkfilename; + $node->safe_psql('postgres', qq{CREATE COLUMN MASTER KEY ${cmkname}}); + return $cmkfilename; +} + + +my $cmk1filename = create_cmk('cmk1'); + +# create CEK +my ($cekname, $bytes) = ('cek1', 48); + +# generate random bytes +system_or_bail $openssl, 'rand', '-out', "${PostgreSQL::Test::Utils::tmp_check}/${cekname}.bin", $bytes; + +# encrypt CEK using CMK +system_or_bail $openssl, 'pkeyutl', '-encrypt', + '-inkey', $cmk1filename, + '-pkeyopt', 'rsa_padding_mode:oaep', + '-in', "${PostgreSQL::Test::Utils::tmp_check}/${cekname}.bin", + '-out', "${PostgreSQL::Test::Utils::tmp_check}/${cekname}.bin.enc"; + +my $cekenchex = unpack('H*', slurp_file "${PostgreSQL::Test::Utils::tmp_check}/${cekname}.bin.enc"); + +# create CEK in database +$node->safe_psql('postgres', qq{CREATE COLUMN ENCRYPTION KEY ${cekname} WITH VALUES (column_master_key = cmk1, algorithm = '$cmkalg', encrypted_value = '\\x${cekenchex}');}); + +$ENV{'PGCOLUMNENCRYPTION'} = '1'; +$ENV{'PGCMKLOOKUP'} = '*=file:' . ${PostgreSQL::Test::Utils::tmp_check} . '/%k.pem'; + +$node->safe_psql('postgres', qq{ +CREATE TABLE tbl1 ( + a int, + b text ENCRYPTED WITH (column_encryption_key = cek1) +); +}); + +$node->safe_psql('postgres', q{ +INSERT INTO tbl1 (a, b) VALUES (1, $1) \bind 'val1' \g +INSERT INTO tbl1 (a, b) VALUES (2, $1) \bind 'val2' \g +}); + +is($node->safe_psql('postgres', q{SELECT a, b FROM tbl1}), + q(1|val1 +2|val2), + 'decrypted query result with one CMK'); + + +# create new CMK +my $cmk2filename = create_cmk('cmk2'); + +# encrypt CEK using new CMK +# +# (Here, we still have the plaintext of the CEK available from +# earlier. In reality, one would decrypt the CEK with the first CMK +# and then re-encrypt it with the second CMK.) +system_or_bail $openssl, 'pkeyutl', '-encrypt', + '-inkey', $cmk2filename, + '-pkeyopt', 'rsa_padding_mode:oaep', + '-in', "${PostgreSQL::Test::Utils::tmp_check}/${cekname}.bin", + '-out', "${PostgreSQL::Test::Utils::tmp_check}/${cekname}.bin.enc"; + +$cekenchex = unpack('H*', slurp_file "${PostgreSQL::Test::Utils::tmp_check}/${cekname}.bin.enc"); + +# add new data record for CEK in database +$node->safe_psql('postgres', qq{ALTER COLUMN ENCRYPTION KEY ${cekname} ADD VALUE (column_master_key = cmk2, algorithm = '$cmkalg', encrypted_value = '\\x${cekenchex}');}); + + +is($node->safe_psql('postgres', q{SELECT a, b FROM tbl1}), + q(1|val1 +2|val2), + 'decrypted query result with two CMKs'); + + +# delete CEK record for first CMK +$node->safe_psql('postgres', qq{ALTER COLUMN ENCRYPTION KEY ${cekname} DROP VALUE (column_master_key = cmk1);}); + + +is($node->safe_psql('postgres', q{SELECT a, b FROM tbl1}), + q(1|val1 +2|val2), + 'decrypted query result with only new CMK'); + + +done_testing(); diff --git a/src/test/column_encryption/test_client.c b/src/test/column_encryption/test_client.c new file mode 100644 index 0000000000..9c257a3ddb --- /dev/null +++ b/src/test/column_encryption/test_client.c @@ -0,0 +1,161 @@ +/* + * Copyright (c) 2021-2023, PostgreSQL Global Development Group + */ + +#include "postgres_fe.h" + +#include "libpq-fe.h" + + +/* + * Test calls that don't support encryption + */ +static int +test1(PGconn *conn) +{ + PGresult *res; + const char *values[] = {"3", "val3", "33"}; + + res = PQprepare(conn, "", "INSERT INTO tbl1 (a, b, c) VALUES ($1, $2, $3)", + 3, NULL); + if (PQresultStatus(res) != PGRES_COMMAND_OK) + { + fprintf(stderr, "PQprepare() failed: %s\n", + PQerrorMessage(conn)); + return 1; + } + + res = PQexecPrepared(conn, "", 3, values, NULL, NULL, 0); + if (PQresultStatus(res) != PGRES_COMMAND_OK) + { + fprintf(stderr, "PQexecPrepared() failed: %s\n", + PQerrorMessage(conn)); + return 1; + } + + return 0; +} + +/* + * Test forced encryption + */ +static int +test2(PGconn *conn) +{ + PGresult *res, + *res2; + const char *values[] = {"3", "val3", "33"}; + int formats[] = {0x00, 0x10, 0x00}; + + res = PQprepare(conn, "", "INSERT INTO tbl1 (a, b, c) VALUES ($1, $2, $3)", + 3, NULL); + if (PQresultStatus(res) != PGRES_COMMAND_OK) + { + fprintf(stderr, "PQprepare() failed: %s\n", + PQerrorMessage(conn)); + return 1; + } + + res2 = PQdescribePrepared(conn, ""); + if (PQresultStatus(res2) != PGRES_COMMAND_OK) + { + fprintf(stderr, "PQdescribePrepared() failed: %s\n", + PQerrorMessage(conn)); + return 1; + } + + if (!(!PQparamisencrypted(res2, 0) && + PQparamisencrypted(res2, 1))) + { + fprintf(stderr, "wrong results from PQparamisencrypted()\n"); + return 1; + } + + res = PQexecPreparedDescribed(conn, "", 3, values, NULL, formats, 0, res2); + if (PQresultStatus(res) != PGRES_COMMAND_OK) + { + fprintf(stderr, "PQexecPrepared() failed: %s\n", + PQerrorMessage(conn)); + return 1; + } + + return 0; +} + +/* + * Test what happens when you supply a binary parameter that is required to be + * encrypted. + */ +static int +test3(PGconn *conn) +{ + PGresult *res; + const char *values[] = {""}; + int lengths[] = {1}; + int formats[] = {1}; + + res = PQexecParams(conn, "INSERT INTO tbl1 (a, b, c) VALUES (100, NULL, $1)", + 3, NULL, values, lengths, formats, 0); + if (PQresultStatus(res) != PGRES_COMMAND_OK) + { + fprintf(stderr, "PQexecParams() failed: %s\n", + PQerrorMessage(conn)); + return 1; + } + + return 0; +} + +/* + * Test what happens when you request results in binary and the result rows + * contain an encrypted column. + */ +static int +test4(PGconn *conn) +{ + PGresult *res; + + res = PQexecParams(conn, "SELECT a, b, c FROM tbl1 WHERE a = 1", 0, NULL, NULL, NULL, NULL, 1); + if (PQresultStatus(res) != PGRES_TUPLES_OK) + { + fprintf(stderr, "PQexecParams() failed: %s\n", + PQerrorMessage(conn)); + return 1; + } + + for (int row = 0; row < PQntuples(res); row++) + for (int col = 0; col < PQnfields(res); col++) + printf("<%d,%d>=%d:%s\n", row, col, PQfformat(res, col), PQgetvalue(res, row, col)); + return 0; +} + +int +main(int argc, char **argv) +{ + PGconn *conn; + int ret = 0; + + conn = PQconnectdb(""); + if (PQstatus(conn) != CONNECTION_OK) + { + fprintf(stderr, "Connection to database failed: %s\n", + PQerrorMessage(conn)); + return 1; + } + + if (argc < 2 || argv[1] == NULL) + return 87; + else if (strcmp(argv[1], "test1") == 0) + ret = test1(conn); + else if (strcmp(argv[1], "test2") == 0) + ret = test2(conn); + else if (strcmp(argv[1], "test3") == 0) + ret = test3(conn); + else if (strcmp(argv[1], "test4") == 0) + ret = test4(conn); + else + ret = 88; + + PQfinish(conn); + return ret; +} diff --git a/src/test/column_encryption/test_run_decrypt.pl b/src/test/column_encryption/test_run_decrypt.pl new file mode 100755 index 0000000000..94bb69066a --- /dev/null +++ b/src/test/column_encryption/test_run_decrypt.pl @@ -0,0 +1,58 @@ +#!/usr/bin/perl + +# Test/sample command for libpq cmklookup run scheme +# +# This just places the data into temporary files and runs the openssl +# command on it. (In practice, this could more simply be written as a +# shell script, but this way it's more portable.) + +# Copyright (c) 2021-2023, PostgreSQL Global Development Group + +use strict; +use warnings; + +use MIME::Base64; + +my ($tmpdir, $cmkname, $alg, $filename) = @ARGV; + +die unless $alg =~ 'RSAES_OAEP_SHA'; + +my $digest = $alg; +$digest =~ s/.*(?=SHA)//; +$digest =~ s/_//g; + +my $openssl = $ENV{OPENSSL}; + +my @cmd = ( + $openssl, 'pkeyutl', '-decrypt', + '-inkey', "${tmpdir}/${cmkname}.pem", '-pkeyopt', 'rsa_padding_mode:oaep', + '-in', $filename, '-out', "${tmpdir}/output.tmp" +); + +if ($digest ne 'SHA1') +{ + # These options require OpenSSL >=1.1.0, so if the digest is + # SHA1, which is the default, omit the options. + push @cmd, + '-pkeyopt', "rsa_mgf1_md:$digest", + '-pkeyopt', "rsa_oaep_md:$digest"; +} + +system(@cmd) == 0 or die "system failed: $?"; + +open my $fh, '<:raw', "${tmpdir}/output.tmp" or die $!; +my $data = ''; + +while (1) { + my $success = read $fh, $data, 100, length($data); + die $! if not defined $success; + last if not $success; +} + +close $fh; + +unlink "${tmpdir}/output.tmp"; + +binmode STDOUT; + +print $data; diff --git a/src/test/meson.build b/src/test/meson.build index 241d9d48aa..0d39cedeb1 100644 --- a/src/test/meson.build +++ b/src/test/meson.build @@ -7,6 +7,7 @@ subdir('subscription') subdir('modules') if ssl.found() + subdir('column_encryption') subdir('ssl') endif diff --git a/src/test/regress/expected/column_encryption.out b/src/test/regress/expected/column_encryption.out new file mode 100644 index 0000000000..a5b691e32a --- /dev/null +++ b/src/test/regress/expected/column_encryption.out @@ -0,0 +1,164 @@ +\set HIDE_COLUMN_ENCRYPTION false +CREATE ROLE regress_enc_user1; +CREATE COLUMN MASTER KEY cmk1 WITH ( + realm = 'test' +); +COMMENT ON COLUMN MASTER KEY cmk1 IS 'column master key'; +CREATE COLUMN MASTER KEY cmk1a WITH ( + realm = 'test' +); +CREATE COLUMN MASTER KEY cmk2; +CREATE COLUMN MASTER KEY cmk2a WITH ( + realm = 'testx' +); +ALTER COLUMN MASTER KEY cmk2a (realm = 'test2'); +CREATE COLUMN ENCRYPTION KEY fail WITH VALUES ( + column_master_key = cmk1, + algorithm = 'foo', -- invalid + encrypted_value = '\xDEADBEEF' +); +ERROR: unrecognized encryption algorithm: foo +CREATE COLUMN ENCRYPTION KEY cek1 WITH VALUES ( + column_master_key = cmk1, + algorithm = 'RSAES_OAEP_SHA_1', + encrypted_value = '\xDEADBEEF' +); +COMMENT ON COLUMN ENCRYPTION KEY cek1 IS 'column encryption key'; +ALTER COLUMN ENCRYPTION KEY cek1 ADD VALUE ( + column_master_key = cmk1a, + algorithm = 'RSAES_OAEP_SHA_1', + encrypted_value = '\xDEADBEEF' +); +-- duplicate +ALTER COLUMN ENCRYPTION KEY cek1 ADD VALUE ( + column_master_key = cmk1a, + algorithm = 'RSAES_OAEP_SHA_1', + encrypted_value = '\xDEADBEEF' +); +ERROR: column encryption key "cek1" already has data for master key "cmk1a" +ALTER COLUMN ENCRYPTION KEY fail ADD VALUE ( + column_master_key = cmk1a, + algorithm = 'RSAES_OAEP_SHA_1', + encrypted_value = '\xDEADBEEF' +); +ERROR: column encryption key "fail" does not exist +CREATE COLUMN ENCRYPTION KEY cek2 WITH VALUES ( + column_master_key = cmk2, + algorithm = 'RSAES_OAEP_SHA_1', + encrypted_value = '\xDEADBEEF' +), +( + column_master_key = cmk2a, + algorithm = 'RSAES_OAEP_SHA_1', + encrypted_value = '\xDEADBEEF' +); +CREATE COLUMN ENCRYPTION KEY cek4 WITH VALUES ( + column_master_key = cmk1, + algorithm = 'RSAES_OAEP_SHA_1', + encrypted_value = '\xDEADBEEF' +); +CREATE TABLE tbl_fail ( + a int, + b text, + c text ENCRYPTED WITH (column_encryption_key = notexist) +); +ERROR: column encryption key "notexist" does not exist +CREATE TABLE tbl_fail ( + a int, + b text, + c text ENCRYPTED WITH (column_encryption_key = cek1, algorithm = 'foo') +); +ERROR: unrecognized encryption algorithm: foo +CREATE TABLE tbl_fail ( + a int, + b text, + c text ENCRYPTED WITH (column_encryption_key = cek1, encryption_type = wrong) +); +ERROR: unrecognized encryption type: wrong +CREATE TABLE tbl_29f3 ( + a int, + b text, + c text ENCRYPTED WITH (column_encryption_key = cek1) +); +\d tbl_29f3 + Table "public.tbl_29f3" + Column | Type | Collation | Nullable | Default +--------+---------+-----------+----------+--------- + a | integer | | | + b | text | | | + c | text | | | + +\d+ tbl_29f3 + Table "public.tbl_29f3" + Column | Type | Collation | Nullable | Default | Storage | Encryption | Stats target | Description +--------+---------+-----------+----------+---------+----------+------------+--------------+------------- + a | integer | | | | plain | | | + b | text | | | | extended | | | + c | text | | | | external | cek1 | | + +CREATE TABLE tbl_447f ( + a int, + b text +); +ALTER TABLE tbl_447f ADD COLUMN c text ENCRYPTED WITH (column_encryption_key = cek1); +\d tbl_447f + Table "public.tbl_447f" + Column | Type | Collation | Nullable | Default +--------+---------+-----------+----------+--------- + a | integer | | | + b | text | | | + c | text | | | + +\d+ tbl_447f + Table "public.tbl_447f" + Column | Type | Collation | Nullable | Default | Storage | Encryption | Stats target | Description +--------+---------+-----------+----------+---------+----------+------------+--------------+------------- + a | integer | | | | plain | | | + b | text | | | | extended | | | + c | text | | | | external | cek1 | | + +DROP COLUMN MASTER KEY cmk1 RESTRICT; -- fail +ERROR: cannot drop column master key cmk1 because other objects depend on it +DETAIL: column encryption key cek1 data for master key cmk1 depends on column master key cmk1 +column encryption key cek4 data for master key cmk1 depends on column master key cmk1 +HINT: Use DROP ... CASCADE to drop the dependent objects too. +ALTER COLUMN MASTER KEY cmk2 RENAME TO cmk3; +ALTER COLUMN MASTER KEY cmk1 RENAME TO cmk3; -- fail +ERROR: column master key "cmk3" already exists +ALTER COLUMN MASTER KEY cmkx RENAME TO cmky; -- fail +ERROR: column master key "cmkx" does not exist +ALTER COLUMN ENCRYPTION KEY cek2 RENAME TO cek3; +ALTER COLUMN ENCRYPTION KEY cek1 RENAME TO cek3; -- fail +ERROR: column encryption key "cek3" already exists +ALTER COLUMN ENCRYPTION KEY cekx RENAME TO ceky; -- fail +ERROR: column encryption key "cekx" does not exist +SET SESSION AUTHORIZATION 'regress_enc_user1'; +DROP COLUMN ENCRYPTION KEY cek3; -- fail +ERROR: must be owner of column encryption key cek3 +DROP COLUMN MASTER KEY cmk3; -- fail +ERROR: must be owner of column master key cmk3 +RESET SESSION AUTHORIZATION; +ALTER COLUMN MASTER KEY cmk3 OWNER TO regress_enc_user1; +ALTER COLUMN ENCRYPTION KEY cek3 OWNER TO regress_enc_user1; +SET SESSION AUTHORIZATION 'regress_enc_user1'; +DROP COLUMN ENCRYPTION KEY cek3; -- ok now +DROP COLUMN MASTER KEY cmk3; -- ok now +RESET SESSION AUTHORIZATION; +ALTER COLUMN ENCRYPTION KEY cek1 DROP VALUE (column_master_key = cmk1a); +ALTER COLUMN ENCRYPTION KEY cek1 DROP VALUE (column_master_key = cmk1a); -- fail +ERROR: column encryption key "cek1" has no data for master key "cmk1a" +ALTER COLUMN ENCRYPTION KEY cek1 DROP VALUE (column_master_key = fail); -- fail +ERROR: column master key "fail" does not exist +ALTER COLUMN ENCRYPTION KEY cek1 DROP VALUE (column_master_key = cmk1a, algorithm = 'foo'); -- fail +ERROR: attribute "algorithm" must not be specified +DROP COLUMN ENCRYPTION KEY cek4; +DROP COLUMN ENCRYPTION KEY fail; +ERROR: column encryption key "fail" does not exist +DROP COLUMN ENCRYPTION KEY IF EXISTS nonexistent; +NOTICE: column encryption key "nonexistent" does not exist, skipping +DROP COLUMN MASTER KEY cmk1a; +DROP COLUMN MASTER KEY fail; +ERROR: column master key "fail" does not exist +DROP COLUMN MASTER KEY IF EXISTS nonexistent; +NOTICE: column master key "nonexistent" does not exist, skipping +DROP ROLE regress_enc_user1; diff --git a/src/test/regress/expected/object_address.out b/src/test/regress/expected/object_address.out index 25c174f275..fe045dff4c 100644 --- a/src/test/regress/expected/object_address.out +++ b/src/test/regress/expected/object_address.out @@ -38,6 +38,8 @@ CREATE SERVER "integer" FOREIGN DATA WRAPPER addr_fdw; CREATE USER MAPPING FOR regress_addr_user SERVER "integer"; ALTER DEFAULT PRIVILEGES FOR ROLE regress_addr_user IN SCHEMA public GRANT ALL ON TABLES TO regress_addr_user; ALTER DEFAULT PRIVILEGES FOR ROLE regress_addr_user REVOKE DELETE ON TABLES FROM regress_addr_user; +CREATE COLUMN MASTER KEY addr_cmk; +CREATE COLUMN ENCRYPTION KEY addr_cek WITH VALUES (column_master_key = addr_cmk, algorithm = 'RSAES_OAEP_SHA_1', encrypted_value = ''); -- this transform would be quite unsafe to leave lying around, -- except that the SQL language pays no attention to transforms: CREATE TRANSFORM FOR int LANGUAGE SQL ( @@ -107,7 +109,8 @@ BEGIN ('text search template'), ('text search configuration'), ('policy'), ('user mapping'), ('default acl'), ('transform'), ('operator of access method'), ('function of access method'), - ('publication namespace'), ('publication relation') + ('publication namespace'), ('publication relation'), + ('column encryption key'), ('column encryption key data'), ('column master key') LOOP FOR names IN VALUES ('{eins}'), ('{addr_nsp, zwei}'), ('{eins, zwei, drei}') LOOP @@ -327,6 +330,24 @@ WARNING: error for publication relation,{addr_nsp,zwei},{}: argument list lengt WARNING: error for publication relation,{addr_nsp,zwei},{integer}: relation "addr_nsp.zwei" does not exist WARNING: error for publication relation,{eins,zwei,drei},{}: argument list length must be exactly 1 WARNING: error for publication relation,{eins,zwei,drei},{integer}: cross-database references are not implemented: "eins.zwei.drei" +WARNING: error for column encryption key,{eins},{}: column encryption key "eins" does not exist +WARNING: error for column encryption key,{eins},{integer}: column encryption key "eins" does not exist +WARNING: error for column encryption key,{addr_nsp,zwei},{}: name list length must be exactly 1 +WARNING: error for column encryption key,{addr_nsp,zwei},{integer}: name list length must be exactly 1 +WARNING: error for column encryption key,{eins,zwei,drei},{}: name list length must be exactly 1 +WARNING: error for column encryption key,{eins,zwei,drei},{integer}: name list length must be exactly 1 +WARNING: error for column encryption key data,{eins},{}: argument list length must be exactly 1 +WARNING: error for column encryption key data,{eins},{integer}: column encryption key "eins" does not exist +WARNING: error for column encryption key data,{addr_nsp,zwei},{}: name list length must be exactly 1 +WARNING: error for column encryption key data,{addr_nsp,zwei},{integer}: name list length must be exactly 1 +WARNING: error for column encryption key data,{eins,zwei,drei},{}: name list length must be exactly 1 +WARNING: error for column encryption key data,{eins,zwei,drei},{integer}: name list length must be exactly 1 +WARNING: error for column master key,{eins},{}: column master key "eins" does not exist +WARNING: error for column master key,{eins},{integer}: column master key "eins" does not exist +WARNING: error for column master key,{addr_nsp,zwei},{}: name list length must be exactly 1 +WARNING: error for column master key,{addr_nsp,zwei},{integer}: name list length must be exactly 1 +WARNING: error for column master key,{eins,zwei,drei},{}: name list length must be exactly 1 +WARNING: error for column master key,{eins,zwei,drei},{integer}: name list length must be exactly 1 -- these object types cannot be qualified names SELECT pg_get_object_address('language', '{one}', '{}'); ERROR: language "one" does not exist @@ -382,6 +403,14 @@ SELECT pg_get_object_address('subscription', '{one}', '{}'); ERROR: subscription "one" does not exist SELECT pg_get_object_address('subscription', '{one,two}', '{}'); ERROR: name list length must be exactly 1 +SELECT pg_get_object_address('column encryption key', '{one}', '{}'); +ERROR: column encryption key "one" does not exist +SELECT pg_get_object_address('column encryption key', '{one,two}', '{}'); +ERROR: name list length must be exactly 1 +SELECT pg_get_object_address('column master key', '{one}', '{}'); +ERROR: column master key "one" does not exist +SELECT pg_get_object_address('column master key', '{one,two}', '{}'); +ERROR: name list length must be exactly 1 -- Make sure that NULL handling is correct. \pset null 'NULL' -- Temporarily disable fancy output, so as future additions never create @@ -409,6 +438,9 @@ WITH objects (type, name, args) AS (VALUES ('type', '{addr_nsp.genenum}', '{}'), ('cast', '{int8}', '{int4}'), ('collation', '{default}', '{}'), + ('column encryption key', '{addr_cek}', '{}'), + ('column encryption key data', '{addr_cek}', '{addr_cmk}'), + ('column master key', '{addr_cmk}', '{}'), ('table constraint', '{addr_nsp, gentable, a_chk}', '{}'), ('domain constraint', '{addr_nsp.gendomain}', '{domconstr}'), ('conversion', '{pg_catalog, koi8_r_to_mic}', '{}'), @@ -505,6 +537,9 @@ subscription|NULL|regress_addr_sub|regress_addr_sub|t publication|NULL|addr_pub|addr_pub|t publication relation|NULL|NULL|addr_nsp.gentable in publication addr_pub|t publication namespace|NULL|NULL|addr_nsp in publication addr_pub_schema|t +column master key|NULL|addr_cmk|addr_cmk|t +column encryption key|NULL|addr_cek|addr_cek|t +column encryption key data|NULL|NULL|of addr_cek for addr_cmk|t --- --- Cleanup resources --- @@ -517,6 +552,8 @@ drop cascades to user mapping for regress_addr_user on server integer DROP PUBLICATION addr_pub; DROP PUBLICATION addr_pub_schema; DROP SUBSCRIPTION regress_addr_sub; +DROP COLUMN ENCRYPTION KEY addr_cek; +DROP COLUMN MASTER KEY addr_cmk; DROP SCHEMA addr_nsp CASCADE; NOTICE: drop cascades to 14 other objects DETAIL: drop cascades to text search dictionary addr_ts_dict @@ -547,6 +584,9 @@ WITH objects (classid, objid, objsubid) AS (VALUES ('pg_type'::regclass, 0, 0), -- no type ('pg_cast'::regclass, 0, 0), -- no cast ('pg_collation'::regclass, 0, 0), -- no collation + ('pg_colenckey'::regclass, 0, 0), -- no column encryption key + ('pg_colenckeydata'::regclass, 0, 0), -- no column encryption key data + ('pg_colmasterkey'::regclass, 0, 0), -- no column master key ('pg_constraint'::regclass, 0, 0), -- no constraint ('pg_conversion'::regclass, 0, 0), -- no conversion ('pg_attrdef'::regclass, 0, 0), -- no default attribute @@ -634,5 +674,8 @@ ORDER BY objects.classid, objects.objid, objects.objsubid; ("(""publication relation"",,,)")|("(""publication relation"",,)")|NULL ("(""publication namespace"",,,)")|("(""publication namespace"",,)")|NULL ("(""parameter ACL"",,,)")|("(""parameter ACL"",,)")|NULL +("(""column master key"",,,)")|("(""column master key"",,)")|NULL +("(""column encryption key"",,,)")|("(""column encryption key"",,)")|NULL +("(""column encryption key data"",,,)")|("(""column encryption key data"",,)")|NULL -- restore normal output mode \a\t diff --git a/src/test/regress/expected/oidjoins.out b/src/test/regress/expected/oidjoins.out index 215eb899be..2aa0e16323 100644 --- a/src/test/regress/expected/oidjoins.out +++ b/src/test/regress/expected/oidjoins.out @@ -73,6 +73,8 @@ NOTICE: checking pg_type {typbasetype} => pg_type {oid} NOTICE: checking pg_type {typcollation} => pg_collation {oid} NOTICE: checking pg_attribute {attrelid} => pg_class {oid} NOTICE: checking pg_attribute {atttypid} => pg_type {oid} +NOTICE: checking pg_attribute {attcek} => pg_colenckey {oid} +NOTICE: checking pg_attribute {attrealtypid} => pg_type {oid} NOTICE: checking pg_attribute {attcollation} => pg_collation {oid} NOTICE: checking pg_class {relnamespace} => pg_namespace {oid} NOTICE: checking pg_class {reltype} => pg_type {oid} @@ -266,3 +268,7 @@ NOTICE: checking pg_subscription {subdbid} => pg_database {oid} NOTICE: checking pg_subscription {subowner} => pg_authid {oid} NOTICE: checking pg_subscription_rel {srsubid} => pg_subscription {oid} NOTICE: checking pg_subscription_rel {srrelid} => pg_class {oid} +NOTICE: checking pg_colmasterkey {cmkowner} => pg_authid {oid} +NOTICE: checking pg_colenckey {cekowner} => pg_authid {oid} +NOTICE: checking pg_colenckeydata {ckdcekid} => pg_colenckey {oid} +NOTICE: checking pg_colenckeydata {ckdcmkid} => pg_colmasterkey {oid} diff --git a/src/test/regress/expected/opr_sanity.out b/src/test/regress/expected/opr_sanity.out index 02f5348ab1..d493ac5f7c 100644 --- a/src/test/regress/expected/opr_sanity.out +++ b/src/test/regress/expected/opr_sanity.out @@ -159,7 +159,8 @@ ORDER BY 1, 2; text | character varying timestamp without time zone | timestamp with time zone txid_snapshot | pg_snapshot -(4 rows) + pg_encrypted_det | pg_encrypted_rnd +(5 rows) SELECT DISTINCT p1.proargtypes[0]::regtype, p2.proargtypes[0]::regtype FROM pg_proc AS p1, pg_proc AS p2 @@ -175,13 +176,15 @@ WHERE p1.oid != p2.oid AND ORDER BY 1, 2; proargtypes | proargtypes -----------------------------+-------------------------- + bytea | pg_encrypted_det bigint | xid8 text | character text | character varying timestamp without time zone | timestamp with time zone bit | bit varying txid_snapshot | pg_snapshot -(6 rows) + pg_encrypted_det | pg_encrypted_rnd +(8 rows) SELECT DISTINCT p1.proargtypes[1]::regtype, p2.proargtypes[1]::regtype FROM pg_proc AS p1, pg_proc AS p2 @@ -197,12 +200,13 @@ WHERE p1.oid != p2.oid AND ORDER BY 1, 2; proargtypes | proargtypes -----------------------------+-------------------------- + bytea | pg_encrypted_det integer | xid timestamp without time zone | timestamp with time zone bit | bit varying txid_snapshot | pg_snapshot anyrange | anymultirange -(5 rows) +(6 rows) SELECT DISTINCT p1.proargtypes[2]::regtype, p2.proargtypes[2]::regtype FROM pg_proc AS p1, pg_proc AS p2 @@ -872,6 +876,8 @@ xid8ge(xid8,xid8) xid8eq(xid8,xid8) xid8ne(xid8,xid8) xid8cmp(xid8,xid8) +pg_encrypted_det_eq(pg_encrypted_det,pg_encrypted_det) +pg_encrypted_det_ne(pg_encrypted_det,pg_encrypted_det) -- restore normal output mode \a\t -- List of functions used by libpq's fe-lobj.c diff --git a/src/test/regress/expected/prepare.out b/src/test/regress/expected/prepare.out index 5815e17b39..4482a65d24 100644 --- a/src/test/regress/expected/prepare.out +++ b/src/test/regress/expected/prepare.out @@ -162,26 +162,26 @@ PREPARE q7(unknown) AS -- DML statements PREPARE q8 AS UPDATE tenk1 SET stringu1 = $2 WHERE unique1 = $1; -SELECT name, statement, parameter_types, result_types FROM pg_prepared_statements +SELECT name, statement, parameter_types, parameter_orig_tables, parameter_orig_columns, result_types FROM pg_prepared_statements ORDER BY name; - name | statement | parameter_types | result_types -------+------------------------------------------------------------------+----------------------------------------------------+-------------------------------------------------------------------------------------------------------------------------- - q2 | PREPARE q2(text) AS +| {text} | {name,boolean,boolean} - | SELECT datname, datistemplate, datallowconn +| | - | FROM pg_database WHERE datname = $1; | | - q3 | PREPARE q3(text, int, float, boolean, smallint) AS +| {text,integer,"double precision",boolean,smallint} | {integer,integer,integer,integer,integer,integer,integer,integer,integer,integer,integer,integer,integer,name,name,name} - | SELECT * FROM tenk1 WHERE string4 = $1 AND (four = $2 OR+| | - | ten = $3::bigint OR true = $4 OR odd = $5::int) +| | - | ORDER BY unique1; | | - q5 | PREPARE q5(int, text) AS +| {integer,text} | {integer,integer,integer,integer,integer,integer,integer,integer,integer,integer,integer,integer,integer,name,name,name} - | SELECT * FROM tenk1 WHERE unique1 = $1 OR stringu1 = $2 +| | - | ORDER BY unique1; | | - q6 | PREPARE q6 AS +| {integer,name} | {integer,integer,integer,integer,integer,integer,integer,integer,integer,integer,integer,integer,integer,name,name,name} - | SELECT * FROM tenk1 WHERE unique1 = $1 AND stringu1 = $2; | | - q7 | PREPARE q7(unknown) AS +| {path} | {text,path} - | SELECT * FROM road WHERE thepath = $1; | | - q8 | PREPARE q8 AS +| {integer,name} | - | UPDATE tenk1 SET stringu1 = $2 WHERE unique1 = $1; | | + name | statement | parameter_types | parameter_orig_tables | parameter_orig_columns | result_types +------+------------------------------------------------------------------+----------------------------------------------------+-----------------------+------------------------+-------------------------------------------------------------------------------------------------------------------------- + q2 | PREPARE q2(text) AS +| {text} | {-} | {0} | {name,boolean,boolean} + | SELECT datname, datistemplate, datallowconn +| | | | + | FROM pg_database WHERE datname = $1; | | | | + q3 | PREPARE q3(text, int, float, boolean, smallint) AS +| {text,integer,"double precision",boolean,smallint} | {-,-,-,-,-} | {0,0,0,0,0} | {integer,integer,integer,integer,integer,integer,integer,integer,integer,integer,integer,integer,integer,name,name,name} + | SELECT * FROM tenk1 WHERE string4 = $1 AND (four = $2 OR+| | | | + | ten = $3::bigint OR true = $4 OR odd = $5::int) +| | | | + | ORDER BY unique1; | | | | + q5 | PREPARE q5(int, text) AS +| {integer,text} | {-,-} | {0,0} | {integer,integer,integer,integer,integer,integer,integer,integer,integer,integer,integer,integer,integer,name,name,name} + | SELECT * FROM tenk1 WHERE unique1 = $1 OR stringu1 = $2 +| | | | + | ORDER BY unique1; | | | | + q6 | PREPARE q6 AS +| {integer,name} | {-,-} | {0,0} | {integer,integer,integer,integer,integer,integer,integer,integer,integer,integer,integer,integer,integer,name,name,name} + | SELECT * FROM tenk1 WHERE unique1 = $1 AND stringu1 = $2; | | | | + q7 | PREPARE q7(unknown) AS +| {path} | {-} | {0} | {text,path} + | SELECT * FROM road WHERE thepath = $1; | | | | + q8 | PREPARE q8 AS +| {integer,name} | {-,tenk1} | {0,14} | + | UPDATE tenk1 SET stringu1 = $2 WHERE unique1 = $1; | | | | (6 rows) -- test DEALLOCATE ALL; diff --git a/src/test/regress/expected/rules.out b/src/test/regress/expected/rules.out index fb9f936d43..f123f3f31e 100644 --- a/src/test/regress/expected/rules.out +++ b/src/test/regress/expected/rules.out @@ -1428,11 +1428,13 @@ pg_prepared_statements| SELECT p.name, p.statement, p.prepare_time, p.parameter_types, + p.parameter_orig_tables, + p.parameter_orig_columns, p.result_types, p.from_sql, p.generic_plans, p.custom_plans - FROM pg_prepared_statement() p(name, statement, prepare_time, parameter_types, result_types, from_sql, generic_plans, custom_plans); + FROM pg_prepared_statement() p(name, statement, prepare_time, parameter_types, parameter_orig_tables, parameter_orig_columns, result_types, from_sql, generic_plans, custom_plans); pg_prepared_xacts| SELECT p.transaction, p.gid, p.prepared, diff --git a/src/test/regress/expected/type_sanity.out b/src/test/regress/expected/type_sanity.out index a640cfc476..2e47131b37 100644 --- a/src/test/regress/expected/type_sanity.out +++ b/src/test/regress/expected/type_sanity.out @@ -75,7 +75,9 @@ ORDER BY t1.oid; 4600 | pg_brin_bloom_summary 4601 | pg_brin_minmax_multi_summary 5017 | pg_mcv_list -(6 rows) + 8243 | pg_encrypted_det + 8244 | pg_encrypted_rnd +(8 rows) -- Make sure typarray points to a "true" array type of our own base SELECT t1.oid, t1.typname as basetype, t2.typname as arraytype, @@ -676,6 +678,8 @@ CREATE TABLE tab_core_types AS SELECT 'txt'::text, true::bool, E'\\xDEADBEEF'::bytea, + 'encrypted$3aacd063d2d3a1a04119df76874e0b9785ea466177f18fe9c0a1a313eaf09c98'::pg_encrypted_det, + 'encrypted$3dade6cec75b107d379f397876c70640e1a1f39bd20884339bc64203abe73d6d'::pg_encrypted_rnd, B'10001'::bit, B'10001'::varbit AS varbit, '12.34'::money, diff --git a/src/test/regress/parallel_schedule b/src/test/regress/parallel_schedule index 9a139f1e24..08a00e1dd4 100644 --- a/src/test/regress/parallel_schedule +++ b/src/test/regress/parallel_schedule @@ -106,7 +106,7 @@ test: publication subscription # Another group of parallel tests # select_views depends on create_view # ---------- -test: select_views portals_p2 foreign_key cluster dependency guc bitmapops combocid tsearch tsdicts foreign_data window xmlmap functional_deps advisory_lock indirect_toast equivclass +test: select_views portals_p2 foreign_key cluster dependency guc bitmapops combocid tsearch tsdicts foreign_data window xmlmap functional_deps advisory_lock indirect_toast equivclass column_encryption # ---------- # Another group of parallel tests (JSON related) diff --git a/src/test/regress/pg_regress_main.c b/src/test/regress/pg_regress_main.c index a4b354c9e6..8ad1f458d5 100644 --- a/src/test/regress/pg_regress_main.c +++ b/src/test/regress/pg_regress_main.c @@ -82,7 +82,7 @@ psql_start_test(const char *testname, bindir ? bindir : "", bindir ? "/" : "", dblist->str, - "-v HIDE_TABLEAM=on -v HIDE_TOAST_COMPRESSION=on", + "-v HIDE_TABLEAM=on -v HIDE_TOAST_COMPRESSION=on -v HIDE_COLUMN_ENCRYPTION=on", infile, outfile); if (offset >= sizeof(psql_cmd)) diff --git a/src/test/regress/sql/column_encryption.sql b/src/test/regress/sql/column_encryption.sql new file mode 100644 index 0000000000..5010ca82c3 --- /dev/null +++ b/src/test/regress/sql/column_encryption.sql @@ -0,0 +1,144 @@ +\set HIDE_COLUMN_ENCRYPTION false + +CREATE ROLE regress_enc_user1; + +CREATE COLUMN MASTER KEY cmk1 WITH ( + realm = 'test' +); + +COMMENT ON COLUMN MASTER KEY cmk1 IS 'column master key'; + +CREATE COLUMN MASTER KEY cmk1a WITH ( + realm = 'test' +); + +CREATE COLUMN MASTER KEY cmk2; + +CREATE COLUMN MASTER KEY cmk2a WITH ( + realm = 'testx' +); + +ALTER COLUMN MASTER KEY cmk2a (realm = 'test2'); + +CREATE COLUMN ENCRYPTION KEY fail WITH VALUES ( + column_master_key = cmk1, + algorithm = 'foo', -- invalid + encrypted_value = '\xDEADBEEF' +); + +CREATE COLUMN ENCRYPTION KEY cek1 WITH VALUES ( + column_master_key = cmk1, + algorithm = 'RSAES_OAEP_SHA_1', + encrypted_value = '\xDEADBEEF' +); + +COMMENT ON COLUMN ENCRYPTION KEY cek1 IS 'column encryption key'; + +ALTER COLUMN ENCRYPTION KEY cek1 ADD VALUE ( + column_master_key = cmk1a, + algorithm = 'RSAES_OAEP_SHA_1', + encrypted_value = '\xDEADBEEF' +); + +-- duplicate +ALTER COLUMN ENCRYPTION KEY cek1 ADD VALUE ( + column_master_key = cmk1a, + algorithm = 'RSAES_OAEP_SHA_1', + encrypted_value = '\xDEADBEEF' +); + +ALTER COLUMN ENCRYPTION KEY fail ADD VALUE ( + column_master_key = cmk1a, + algorithm = 'RSAES_OAEP_SHA_1', + encrypted_value = '\xDEADBEEF' +); + +CREATE COLUMN ENCRYPTION KEY cek2 WITH VALUES ( + column_master_key = cmk2, + algorithm = 'RSAES_OAEP_SHA_1', + encrypted_value = '\xDEADBEEF' +), +( + column_master_key = cmk2a, + algorithm = 'RSAES_OAEP_SHA_1', + encrypted_value = '\xDEADBEEF' +); + +CREATE COLUMN ENCRYPTION KEY cek4 WITH VALUES ( + column_master_key = cmk1, + algorithm = 'RSAES_OAEP_SHA_1', + encrypted_value = '\xDEADBEEF' +); + +CREATE TABLE tbl_fail ( + a int, + b text, + c text ENCRYPTED WITH (column_encryption_key = notexist) +); + +CREATE TABLE tbl_fail ( + a int, + b text, + c text ENCRYPTED WITH (column_encryption_key = cek1, algorithm = 'foo') +); + +CREATE TABLE tbl_fail ( + a int, + b text, + c text ENCRYPTED WITH (column_encryption_key = cek1, encryption_type = wrong) +); + +CREATE TABLE tbl_29f3 ( + a int, + b text, + c text ENCRYPTED WITH (column_encryption_key = cek1) +); + +\d tbl_29f3 +\d+ tbl_29f3 + +CREATE TABLE tbl_447f ( + a int, + b text +); + +ALTER TABLE tbl_447f ADD COLUMN c text ENCRYPTED WITH (column_encryption_key = cek1); + +\d tbl_447f +\d+ tbl_447f + +DROP COLUMN MASTER KEY cmk1 RESTRICT; -- fail + +ALTER COLUMN MASTER KEY cmk2 RENAME TO cmk3; +ALTER COLUMN MASTER KEY cmk1 RENAME TO cmk3; -- fail +ALTER COLUMN MASTER KEY cmkx RENAME TO cmky; -- fail + +ALTER COLUMN ENCRYPTION KEY cek2 RENAME TO cek3; +ALTER COLUMN ENCRYPTION KEY cek1 RENAME TO cek3; -- fail +ALTER COLUMN ENCRYPTION KEY cekx RENAME TO ceky; -- fail + +SET SESSION AUTHORIZATION 'regress_enc_user1'; +DROP COLUMN ENCRYPTION KEY cek3; -- fail +DROP COLUMN MASTER KEY cmk3; -- fail +RESET SESSION AUTHORIZATION; +ALTER COLUMN MASTER KEY cmk3 OWNER TO regress_enc_user1; +ALTER COLUMN ENCRYPTION KEY cek3 OWNER TO regress_enc_user1; +SET SESSION AUTHORIZATION 'regress_enc_user1'; +DROP COLUMN ENCRYPTION KEY cek3; -- ok now +DROP COLUMN MASTER KEY cmk3; -- ok now +RESET SESSION AUTHORIZATION; + +ALTER COLUMN ENCRYPTION KEY cek1 DROP VALUE (column_master_key = cmk1a); +ALTER COLUMN ENCRYPTION KEY cek1 DROP VALUE (column_master_key = cmk1a); -- fail +ALTER COLUMN ENCRYPTION KEY cek1 DROP VALUE (column_master_key = fail); -- fail +ALTER COLUMN ENCRYPTION KEY cek1 DROP VALUE (column_master_key = cmk1a, algorithm = 'foo'); -- fail + +DROP COLUMN ENCRYPTION KEY cek4; +DROP COLUMN ENCRYPTION KEY fail; +DROP COLUMN ENCRYPTION KEY IF EXISTS nonexistent; + +DROP COLUMN MASTER KEY cmk1a; +DROP COLUMN MASTER KEY fail; +DROP COLUMN MASTER KEY IF EXISTS nonexistent; + +DROP ROLE regress_enc_user1; diff --git a/src/test/regress/sql/object_address.sql b/src/test/regress/sql/object_address.sql index 1a6c61f49d..25a7f2ae98 100644 --- a/src/test/regress/sql/object_address.sql +++ b/src/test/regress/sql/object_address.sql @@ -41,6 +41,8 @@ CREATE SERVER "integer" FOREIGN DATA WRAPPER addr_fdw; CREATE USER MAPPING FOR regress_addr_user SERVER "integer"; ALTER DEFAULT PRIVILEGES FOR ROLE regress_addr_user IN SCHEMA public GRANT ALL ON TABLES TO regress_addr_user; ALTER DEFAULT PRIVILEGES FOR ROLE regress_addr_user REVOKE DELETE ON TABLES FROM regress_addr_user; +CREATE COLUMN MASTER KEY addr_cmk; +CREATE COLUMN ENCRYPTION KEY addr_cek WITH VALUES (column_master_key = addr_cmk, algorithm = 'RSAES_OAEP_SHA_1', encrypted_value = ''); -- this transform would be quite unsafe to leave lying around, -- except that the SQL language pays no attention to transforms: CREATE TRANSFORM FOR int LANGUAGE SQL ( @@ -99,7 +101,8 @@ CREATE STATISTICS addr_nsp.gentable_stat ON a, b FROM addr_nsp.gentable; ('text search template'), ('text search configuration'), ('policy'), ('user mapping'), ('default acl'), ('transform'), ('operator of access method'), ('function of access method'), - ('publication namespace'), ('publication relation') + ('publication namespace'), ('publication relation'), + ('column encryption key'), ('column encryption key data'), ('column master key') LOOP FOR names IN VALUES ('{eins}'), ('{addr_nsp, zwei}'), ('{eins, zwei, drei}') LOOP @@ -144,6 +147,10 @@ CREATE STATISTICS addr_nsp.gentable_stat ON a, b FROM addr_nsp.gentable; SELECT pg_get_object_address('publication', '{one,two}', '{}'); SELECT pg_get_object_address('subscription', '{one}', '{}'); SELECT pg_get_object_address('subscription', '{one,two}', '{}'); +SELECT pg_get_object_address('column encryption key', '{one}', '{}'); +SELECT pg_get_object_address('column encryption key', '{one,two}', '{}'); +SELECT pg_get_object_address('column master key', '{one}', '{}'); +SELECT pg_get_object_address('column master key', '{one,two}', '{}'); -- Make sure that NULL handling is correct. \pset null 'NULL' @@ -174,6 +181,9 @@ CREATE STATISTICS addr_nsp.gentable_stat ON a, b FROM addr_nsp.gentable; ('type', '{addr_nsp.genenum}', '{}'), ('cast', '{int8}', '{int4}'), ('collation', '{default}', '{}'), + ('column encryption key', '{addr_cek}', '{}'), + ('column encryption key data', '{addr_cek}', '{addr_cmk}'), + ('column master key', '{addr_cmk}', '{}'), ('table constraint', '{addr_nsp, gentable, a_chk}', '{}'), ('domain constraint', '{addr_nsp.gendomain}', '{domconstr}'), ('conversion', '{pg_catalog, koi8_r_to_mic}', '{}'), @@ -228,6 +238,8 @@ CREATE STATISTICS addr_nsp.gentable_stat ON a, b FROM addr_nsp.gentable; DROP PUBLICATION addr_pub; DROP PUBLICATION addr_pub_schema; DROP SUBSCRIPTION regress_addr_sub; +DROP COLUMN ENCRYPTION KEY addr_cek; +DROP COLUMN MASTER KEY addr_cmk; DROP SCHEMA addr_nsp CASCADE; @@ -247,6 +259,9 @@ CREATE STATISTICS addr_nsp.gentable_stat ON a, b FROM addr_nsp.gentable; ('pg_type'::regclass, 0, 0), -- no type ('pg_cast'::regclass, 0, 0), -- no cast ('pg_collation'::regclass, 0, 0), -- no collation + ('pg_colenckey'::regclass, 0, 0), -- no column encryption key + ('pg_colenckeydata'::regclass, 0, 0), -- no column encryption key data + ('pg_colmasterkey'::regclass, 0, 0), -- no column master key ('pg_constraint'::regclass, 0, 0), -- no constraint ('pg_conversion'::regclass, 0, 0), -- no conversion ('pg_attrdef'::regclass, 0, 0), -- no default attribute diff --git a/src/test/regress/sql/prepare.sql b/src/test/regress/sql/prepare.sql index c6098dc95c..7db788735c 100644 --- a/src/test/regress/sql/prepare.sql +++ b/src/test/regress/sql/prepare.sql @@ -75,7 +75,7 @@ CREATE TEMPORARY TABLE q5_prep_nodata AS EXECUTE q5(200, 'DTAAAA') PREPARE q8 AS UPDATE tenk1 SET stringu1 = $2 WHERE unique1 = $1; -SELECT name, statement, parameter_types, result_types FROM pg_prepared_statements +SELECT name, statement, parameter_types, parameter_orig_tables, parameter_orig_columns, result_types FROM pg_prepared_statements ORDER BY name; -- test DEALLOCATE ALL; diff --git a/src/test/regress/sql/type_sanity.sql b/src/test/regress/sql/type_sanity.sql index 79ec410a6c..4c4cf39398 100644 --- a/src/test/regress/sql/type_sanity.sql +++ b/src/test/regress/sql/type_sanity.sql @@ -503,6 +503,8 @@ CREATE TABLE tab_core_types AS SELECT 'txt'::text, true::bool, E'\\xDEADBEEF'::bytea, + 'encrypted$3aacd063d2d3a1a04119df76874e0b9785ea466177f18fe9c0a1a313eaf09c98'::pg_encrypted_det, + 'encrypted$3dade6cec75b107d379f397876c70640e1a1f39bd20884339bc64203abe73d6d'::pg_encrypted_rnd, B'10001'::bit, B'10001'::varbit AS varbit, '12.34'::money, base-commit: cca186348929cd75f23ef1b25922386bf38cf99c -- 2.39.0