Re: Improve error handling of HMAC computations and SCRAM

From: Michael Paquier <michael(at)paquier(dot)xyz>
To: Sergey Shinderuk <s(dot)shinderuk(at)postgrespro(dot)ru>
Cc: Postgres hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org>
Subject: Re: Improve error handling of HMAC computations and SCRAM
Date: 2022-01-12 03:56:17
Message-ID: Yd5RYX89Qy6Okv8u@paquier.xyz
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On Tue, Jan 11, 2022 at 11:08:59AM +0300, Sergey Shinderuk wrote:
> Yeah, that's better. I thought "providing errors about an error" was a
> typo, but now I see the same comment was committed in b69aba745. Is it just
> me? :)

It is not only you :) I have applied a fix to fix the comments on
HEAD and REL_14_STABLE.

Attached is a rebased patch for the HMAC portions, with a couple of
fixes I noticed while going through this stuff again (mostly around
SASLprep and pg_fe_scram_build_secret), and a fix for a conflict
coming from 9cb5518. psql's \password is wrong to assume that the
only error that can happen for scran-sha-256 is an OOM, but we'll get
there.
--
Michael

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