FreeTDS Development Group

[Steve Langasek <vorlon AT netexpress.net>]

On Fri, Sep 27, 2002 at 03:46:05PM -0400, Lowden, James K wrote:
> > From: Steve Langasek [mailto:vorlon AT netexpress.net]
> > Sent: September 27, 2002 3:06 PM

> > Not sure where to find GPL- and BSD-friendly MD4 routines.

> Is this in the right vicinity?  I don't know how portable it is, or what
> dependencies it has.  

It's portable enough, but I believe the license text you quote below is
no more GPL compatible than OpenSSL's is.  It has a rather steep
advertising requirement, in that *any* derived work must mention its
origins in *all* material referencing the derived work.

However, the file in question happens to be from RFC 1320, and using the
text of RFC 1320 as a launching point for an MD4 reimplementation seems
safe enough.  This is an approach I'm currently considering.

Steve Langasek
postmodern programmer

> COPYRIGHT
>      Copyright (C) 1991-2, RSA Data Security, Inc. Created 1991. All rights
>      reserved.
> 
>      License to copy and use this software is granted provided that it is
>      identified as the "RSA Data Security, Inc. MD4 Message-Digest
> Algorithm"
>      in all material mentioning or referencing this software or this
> function.
>      License is also granted to make and use derivative works provided that
>      such works are identified as "derived from the RSA Data Security, Inc.
>      MD4 Message-Digest Algorithm" in all material mentioning or referencing
>      the derived work.
> 
>      RSA Data Security, Inc. makes no representations concerning either the
>      merchantability of this software or the suitability of this software
> for
>      any particular purpose. It is provided "as is" without express or
> implied
>      warranty of any kind.
> 
>      These notices must be retained in any copies of any part of this
> documen-
>      tation and/or software.

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