On 10 Nov 1996 02:26:04 +0100 
 tron@lyssa.owl.de (Matthias Scheler) wrote:

 > You are aware that those algorithms are affected by those pesky
 > USA export laws?
 > 
 > [I hope MD5 is free or isn't it?]
 > 
 > And those certificates would have to be recreated every a module
 > changes, quite annoying for debugging.

MD5 is free, yes.  Attached below is the copyright/license appearing
in a common md5 library.

Jason R. Thorpe                                       thorpej@nas.nasa.gov
NASA Ames Research Center                               Home: 408.866.1912
NAS: M/S 258-6                                          Work: 415.604.0935
Moffett Field, CA 94035                                Pager: 415.428.6939

/* 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. MD5 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. MD5 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
documentation and/or software.
*/