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Problems with pgcrypto and special characters

From: "Markus Wollny" <Markus(dot)Wollny(at)computec(dot)de>
To: <pgsql-general(at)postgresql(dot)org>
Subject: Problems with pgcrypto and special characters
Date: 2005-02-28 17:32:41
Message-ID: (view raw, whole thread or download thread mbox)
Lists: pgsql-general
To get straight to the point, here's my problem:

mypgdb=# select bytea2text(decrypt(encrypt('Tübingen'::bytea, 'mypassphrase'::bytea,'bf'::text),'mypassphrase'::bytea,'bf'::text)) as foo;
(1 row)

I have compiled and installed pg_crypto and I'am using the following function as workaround for a bytea-to-text-cast:

create or replace function bytea2text(bytea) returns text as '
   return $1;
 ' language plpgsql;

The cluster was initialized with locale de_DE.UTF-8, pg_controldata confirms:
LC_COLLATE:                           de_DE.UTF-8
LC_CTYPE:                             de_DE.UTF-8

Database version is PostgreSQL 8.0.1 on i686-pc-linux-gnu, compiled by GCC gcc (GCC) 3.2

I think I'm missing something very obvious here, so please give me a hint: How can I use pgcrypto to encrypt and decrypt text which contains UTF-8 special characters like german umlauts? I think that this simple bytea2text-function probably needs a replacement, but I haven't got the faintest clue about how to actually retrieve the original input after encryption. Any help would be tremendously appreciated :)

Thanks in advance!

Kind regards



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