linux-kernel - Re: [PATCH RFC] crypto/hkdf: Skip tests with keys too short in FIPS mode

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <CAHhBTWuXQY5CBLTT+-+WsTDw6Pua=Kt-4Mrj6+qiEjKEi+SSSQ@mail.gmail.com>
Date: Wed, 17 Dec 2025 08:08:48 +0800
From: Li Tian <litian@...hat.com>
To: Eric Biggers <ebiggers@...nel.org>
Cc: linux-kernel@...r.kernel.org, linux-crypto@...r.kernel.org, 
	Herbert Xu <herbert@...dor.apana.org.au>, "David S . Miller" <davem@...emloft.net>, 
	Vitaly Kuznetsov <vkuznets@...hat.com>, Simo Sorce <ssorce@...hat.com>
Subject: Re: [PATCH RFC] crypto/hkdf: Skip tests with keys too short in FIPS mode

On Wed, Dec 10, 2025 at 6:54 AM Eric Biggers <ebiggers@...nel.org> wrote:
> What problem are you trying to solve?

Eric, as you've said "keylen < 14 check in the new version in
crypto/sha256.c." was forgotten.
IMHO, it deserves recovery in terms of FIPS. And by the time the check
is restored, the hkdf_test
cases failure will likely surface again. Hence the skipping in this proposal.

Li Tian