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Message-ID: <a82a919e0808240629wdf71b55r360a2e1ef8c83d75@mail.gmail.com>
Date: Sun, 24 Aug 2008 14:29:22 +0100
From: "Larry Bonner" <larry.bonner1@...il.com>
To: john-users@...ts.openwall.com
Subject: Re: "new" libc crypt functions
the algorithm SHACrypt is based on MD5Crypt
see details here: http://people.redhat.com/drepper/sha-crypt.html
the main differences are greater salt length, modular rounds in main
hashing routine and of course using sha256 or sha512 as you say.
its possible to create a SIMD version of this algorithm, whereas with
bcrypt, it isn't.(correct me if wrong)
so i still believe bcrypt to be more secure for just that reason, only
my opinion of course :)
On 8/23/08, RB <aoz.syn@...il.com> wrote:
> I wasn't aware of the additions until a few weeks ago, but found out
> that pam_unix now offers SHA256 ($5$) and SHA512 ($6$) hashes. Any
> thoughts on implementing them, or what the speed comparison may be to
> the blowfish hashes? Just an interesting development, it's not often
> the core libraries offer new encryption methods - used to seeing TLB
> or pam_unix2 for alternate hashes.
>
>
> RB
>
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