Horton

Re: Key management with tests

Bruce Momjian <bruce@momjian.us>

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From: Bruce Momjian <bruce@momjian.us>
To: Stephen Frost <sfrost@snowman.net>
Cc: Masahiko Sawada <sawada.mshk@gmail.com>, Thomas Munro <thomas.munro@gmail.com>, PostgreSQL-development <pgsql-hackers@postgresql.org>, Masahiko Sawada <masahiko.sawada@2ndquadrant.com>
Date: 2021-01-12T18:51:08Z
Lists: pgsql-hackers

Commits

Same data as JSON: GET /api/v1/messages/:b64id/commits the thread's linked commits as JSON, with link sources. API reference →

  1. Rethink method for assigning OIDs to the template0 and postgres DBs.

  2. pg_upgrade: Preserve database OIDs.

  3. pg_upgrade: Preserve relfilenodes and tablespace OIDs.

  4. Fix for new Boolean node

  5. Improve error handling of HMAC computations

  6. Add macro RelationIsPermanent() to report relation permanence

  7. Enhance nbtree index tuple deletion.

On Tue, Jan 12, 2021 at 01:44:05PM -0500, Stephen Frost wrote:
> * Bruce Momjian (bruce@momjian.us) wrote:
> > Well, we have eight unused bits in the IV, so we could just increment
> > that for every hint bit change that uses the same LSN, and then force a
> > dummy WAL record when that 8-bit counter overflows --- that seems
> > simpler than logging hint bits.
> 
> Sure, as long as we have a place to store that information..  We need to
> have the full IV available when we go to decrypt the page.

Oh, yeah, we would need that counter recorded since previously the IV
was made up of already-recorded information, i.e., the page LSN and page
number.  However, the reason don't WAL-log hint bits always is because
we can afford to lose them, but in this case, any counter we need to
store will need to be WAL logged since we can't affort to lose that
counter value for decryption --- that gets us back to WAL-logging
something during hint bit changes.  :-(

-- 
  Bruce Momjian  <bruce@momjian.us>        https://momjian.us
  EnterpriseDB                             https://enterprisedb.com

  The usefulness of a cup is in its emptiness, Bruce Lee