linux-kernel - Re: [PATCH] lib/sha1: use the git implementation of SHA-1

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: <CA+55aFyNtMwgJaMDjsy8V4k3v+WPcw9byNEVN46VGetvDOheuw@mail.gmail.com>
Date:	Sun, 7 Aug 2011 14:06:51 -0700
From:	Linus Torvalds <torvalds@...ux-foundation.org>
To:	Joachim Eastwood <manabian@...il.com>
Cc:	Andreas Schwab <schwab@...ux-m68k.org>,
	Nicolas Pitre <nico@...xnic.net>,
	Mandeep Singh Baines <msb@...omium.org>,
	linux-kernel@...r.kernel.org,
	Ramsay Jones <ramsay@...say1.demon.co.uk>,
	Herbert Xu <herbert@...dor.hengli.com.au>,
	"David S. Miller" <davem@...emloft.net>,
	linux-crypto@...r.kernel.org, linux@....linux.org.uk
Subject: Re: [PATCH] lib/sha1: use the git implementation of SHA-1

On Sun, Aug 7, 2011 at 1:48 PM, Joachim  Eastwood <manabian@...il.com> wrote:
>
> yes, this works. At least my board boots as normal.

Ok, I'll remove it for -rc1, just to have a working ARM setup. Maybe
we can re-introduce it later (either together with some arm-specific
hack for SHA_WORKSPACE_WORDS or by having an arm-optimized version of
the *good* sha1 routine).

But I doubt it: there used to be an ARM-optimized thing in git too. It
was removed two years ago with the commit message:

    remove ARM and Mozilla SHA1 implementations

    They are both slower than the new BLK_SHA1 implementation, so it is
    pointless to keep them around.

and quite frankly, that removed code seems to be the same as the
in-kernel one. So I bet the ARM "optimized" SHA1 is simply not worth
keeping around.

                      Linus
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/