| From: | Andres Freund <andres(at)anarazel(dot)de> |
|---|---|
| To: | Stephen Frost <sfrost(at)snowman(dot)net> |
| Cc: | Bruce Momjian <bruce(at)momjian(dot)us>, Robert Haas <robertmhaas(at)gmail(dot)com>, Alvaro Herrera <alvherre(at)alvh(dot)no-ip(dot)org>, Masahiko Sawada <sawada(dot)mshk(at)gmail(dot)com>, Tom Kincaid <tomjohnkincaid(at)gmail(dot)com>, Amit Kapila <amit(dot)kapila16(at)gmail(dot)com>, Thomas Munro <thomas(dot)munro(at)gmail(dot)com>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>, Masahiko Sawada <masahiko(dot)sawada(at)2ndquadrant(dot)com> |
| Subject: | Re: storing an explicit nonce |
| Date: | 2021-05-25 23:35:42 |
| Message-ID: | 20210525233542.xaces6ttypnkeofj@alap3.anarazel.de |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-hackers |
Hi,
On 2021-05-25 17:22:43 -0400, Stephen Frost wrote:
> Err, to be clear, I was saying that we could exclude the hint bits
> *entirely* from what's being encrypted and I don't think that would be a
> huge issue.
It's a *huge* issue. For one, the computational effort of doing so would
be a problem. But there's a more fundamental issue: We don't even know
the type of the page at the time we write data out! We can't do a lookup
of pg_class in the checkpointer to see whether the page is a heap page
where we need to mask out hint bits.
Greetings,
Andres Freund
| From | Date | Subject | |
|---|---|---|---|
| Next Message | Andres Freund | 2021-05-25 23:48:21 | Re: storing an explicit nonce |
| Previous Message | Andres Freund | 2021-05-25 23:33:13 | Re: storing an explicit nonce |