Follow @Openwall on Twitter for new release announcements and other news
[<prev] [next>] [<thread-prev] [day] [month] [year] [list]
Date: Sun, 8 Apr 2012 22:29:44 +0400
From: Solar Designer <>
Subject: Re: SHA-256 and SHA-512 implementations

On Mon, Apr 02, 2012 at 12:09:06PM +0400, Solar Designer wrote:
> On Sat, Mar 24, 2012 at 02:05:02AM +0400, Solar Designer wrote:
> >
> > 
> > Besides a novel idea of how a single SHA-2 digest may be computed with a
> > SIMD parallelized implementation of the compression function
> Upon a closer look, I was wrong about that: they parallelize message
> scheduling, not the compression function.
> > (great, but
> > not needed for JtR in particular), this paper gives actual pieces of
> > code with SSSE3 and AVX2 intrinsics (separately).  No license, though.
> > I might e-mail the authors.
> I just did.

I heard back.  They're submitting the patch for inclusion in OpenSSL:

if accepted, it will be available under OpenSSL's license.  There's also
a patent application involved, although as far as I understood the
authors intend to issue free licenses upon request.  I think these
things will hamper adoption, unfortunately.  Luckily, this is of little
relevance for JtR specifically since we'll need to be computing several
independent hashes in parallel instead.


Powered by blists - more mailing lists

Confused about mailing lists and their use? Read about mailing lists on Wikipedia and check out these guidelines on proper formatting of your messages.