home *** CD-ROM | disk | FTP | other *** search
- Xref: sparky alt.security.pgp:352 sci.crypt:6010
- Newsgroups: alt.security.pgp,sci.crypt
- Path: sparky!uunet!mcsun!Germany.EU.net!rzsun2.informatik.uni-hamburg.de!fbihh!bontchev
- From: bontchev@fbihh.informatik.uni-hamburg.de (Vesselin Bontchev)
- Subject: Re: Legal Stuff!
- Message-ID: <bontchev.724976946@fbihh>
- Sender: news@informatik.uni-hamburg.de (Mr. News)
- Reply-To: bontchev@fbihh.informatik.uni-hamburg.de
- Organization: Virus Test Center, University of Hamburg
- References: <bontchev.724943800@fbihh> <9212211051.AA59278@chaos.intercon.com>
- Date: 21 Dec 92 22:29:06 GMT
- Lines: 60
-
- amanda@intercon.com (Amanda Walker) writes:
-
- > > (I just wonder how all those crypt(3) functions in the Unixes around
- > > were exported...)
-
- > They weren't. Export versions of UNIX have the crypt(3) functions removed
- > from the C libraries. The login program (which uses crypt(3) internally to
-
- Very funny... Now, our system, which is a DEC Ultrix, running on a
- VAX, -does- have the crypt(3) function... The funnier thing is that it
- doesn't have the crypt(1) program, which is a much weaker encryptor...
- On the top of that, there is a des(1) program! (Well, I'll have to
- check, maybe des(1) is in /usr/local/bin and has been put there by the
- sysadmin, who has got one of the zillions free DES implementations,
- available on the net...)
-
- > authenticate passwords) turns out to be OK, because it cannot be used to
- > encrypt or decrypt information. I have seen it reported in print that there
-
- Ah, but you should be able to recompile login(1) and how to do that if
- crypt(3) is not available?
-
- > > Fortunately, the USA is not the only country that has programmers, so
- > > there are plenty of free DES implementations around. I really cannot
- > > understand why RIPEM is not available for anonymous ftp, without the DES
- > > and the RSAREF stuff. Anybody should be able to plug in additional
- > > DES- and RSAREF-compatible modules...
-
- > This possibility is being explored. Making it available without DES included
- > is not a problem. Making it available without RSAREF, but still assuming the
- > *use* of RSA in its operation, may not be enough to satisfy RSA's lawyers.
- > However, we shall see how this develops. I hope that something along these
- > lines can be worked out.
-
- Somebody else just explained me in private e-mail that this is even
- less likely... It seems that the NSA is -very- reluctant to allow
- export of programs that have "hooks" for user-supplied encryption
- software... For instance, there is usually no problem to export a
- program that provides DES encryption using an arbitrary key, but NOT
- ON ARBITRARY DATA! (By "no problem", I mean that you can get the
- permission without problems, not that you don't need a pemission...)
- In the same time, it is extremely unlikely that you'll be permitted to
- export a program that does not perform encryption at all, but has
- "hooks" for the user to plug in his/her own implementation of DES or
- whatever! On the top of that, there seem to be no written laws or
- regulations about this; my correspondents (there were two of them) had
- got this feeling by personal experience...
-
- As an example, the Kerberos implementation that is allowed to be
- exported by DEC has not only the encryption routines removed - it has
- even the -calls- to those routines removed! So, you cannot just add
- encryption to it...
-
- Regards,
- Vesselin
- --
- Vesselin Vladimirov Bontchev Virus Test Center, University of Hamburg
- Tel.:+49-40-54715-224, Fax: +49-40-54715-226 Fachbereich Informatik - AGN
- < PGP 2.1 public key available on request. > Vogt-Koelln-Strasse 30, rm. 107 C
- e-mail: bontchev@fbihh.informatik.uni-hamburg.de D-2000 Hamburg 54, Germany
-