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Re: patch providing SHA-2 utilities

From: David Madore
Subject: Re: patch providing SHA-2 utilities
Date: Wed, 9 Nov 2005 17:45:45 +0100
User-agent: Mutt/1.5.9i

On Wed, Nov 09, 2005 at 04:17:08PM +0100, Simon Josefsson wrote:
> Hi.  Would it be possible to re-license this work to the LGPL, and
> merge it with gnulib?  I will eventually need SHA-2 in some of my
> projects that is using gnulib, and I want the LGPL license.  I
> contacted FSF earlier to re-license MD5, and that was eventually done,
> but I'd like to avoid that experience if possible.  Since this is a
> fairly new contribution, I hope the original authors are still
> responsive.  Would you consider licensing your work under the LGPL?

I believe that now that I've signed the copyright assignment to the
FSF I no longer can relicense this code (at least under U.S. law:
under French law I the copyright assignment is nil so I think I can,
but you probably don't care much).  So you'll have to ask the FSF

Given that producing the SHA-2 code from the SHA-1 code is about 1% of
the work and the 99% remaining is just banging one's head against the
wall to understand the build system, I think you'd just as well do to
take whatever SHA-1 (or even MD5) code you have and adapt it to do
SHA-2.  There are already Public Domain implementations of SHA-1 at
least and probably SHA-2 (at least some functions) "out there" on the

     David A. Madore
     http://www.madore.org/~david/ )

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