home *** CD-ROM | disk | FTP | other *** search
- Xref: sparky sci.crypt:5913 alt.security:5169
- Newsgroups: sci.crypt,alt.security
- Path: sparky!uunet!caen!hellgate.utah.edu!hellgate!moore
- From: moore@cs.utah.edu (Tim Moore)
- Subject: Re: PGP v. 2.1 Released
- Message-ID: <MOORE.92Dec18162557@defmacro.cs.utah.edu>
- In-reply-to: strnlght@netcom.com's message of Fri, 18 Dec 1992 21:57:50 GMT
- Organization: University of Utah CS Dept
- References: <1glvofINNc0o@roche.csl.sri.com> <a_rubin.724526808@dn66>
- <MOORE.92Dec18095153@defmacro.cs.utah.edu>
- <1992Dec18.215750.1696@netcom.com>
- Date: 18 Dec 92 16:25:57
- Lines: 68
-
- In article <1992Dec18.215750.1696@netcom.com> strnlght@netcom.com (David Sternlight) writes:
-
- Tim Moore makes the interesting point that PGP 2.x contains RSADSI code
- for the MD5 algorithm. He goes on to say it's licensed to all.
-
- To avoid reading too much into my paraphrase, here's the notice from
- md5.c:
-
- /*
- ***********************************************************************
- ** Copyright (C) 1990, RSA Data Security, Inc. 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. **
- ***********************************************************************
- */
-
- Aha! The smoking gun?
-
- Doubtful. Most people would say that this code is "freeware"; this
- header isn't too different from that included in e.g. BSD 4.4 sources,
- except the loaded term "license" is used.
-
- RSA/PKP are not obligated to license to anyone, and may deny or even
- withdraw licenses for what they consider to be cause. If they were to
-
- I don't see how that follows. The "license" says nothing about RSADSI
- retaining a right to restrict its distribution. The license is in the
- source file. It is not whatever RSADSI feels that the license should
- be at any given moment.
-
- take the position that PGP users are not entitled to a license then
- this would be "proof", if any further proof were needed, that PGP2.x
- contains illegal code. I believe that even outside the U.S. the use of
- someone else's code without permission is at least a copyright
- violation in most countries, including many from which PGP defenders
- are writing from.
-
- Restricting use of MD5 would be an extremely stupid move on their
- part. It's interesting to contrast md5 (and the other members of the
- digest family, MD2 and MD4) with RSA. It seems like every day someone
- suggests a new use for MD5 in sci.crypt, and those uses are
- immediately implementable because Rivest put the md5 algorithm in the
- public domain (as if algorithms could be patented :-). I predict that
- in the year 2000 the use of MD5 and follow-ons will be much more
- widespread than that of RSA in the U.S. I'll really go out on a limb
- and say that RSADSI will be making more money from MD5 applications
- than RSA.
-
- --
- Tim Moore moore@cs.utah.edu {bellcore,hplabs}!utah-cs!moore
- "Wind in my hair - Shifting and drifting - Mechanical music - Adrenaline surge"
- - Rush
-