Horton

Re: storing an explicit nonce

Andres Freund <andres@anarazel.de>

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From: Andres Freund <andres@anarazel.de>
To: Stephen Frost <sfrost@snowman.net>
Cc: Bruce Momjian <bruce@momjian.us>, Robert Haas <robertmhaas@gmail.com>, Alvaro Herrera <alvherre@alvh.no-ip.org>, Masahiko Sawada <sawada.mshk@gmail.com>, Tom Kincaid <tomjohnkincaid@gmail.com>, Amit Kapila <amit.kapila16@gmail.com>, Thomas Munro <thomas.munro@gmail.com>, PostgreSQL-development <pgsql-hackers@postgresql.org>, Masahiko Sawada <masahiko.sawada@2ndquadrant.com>
Date: 2021-05-25T23:35:42Z
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.

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