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From: keith@EXPO.LCS.MIT.EDU (Keith Packard)
Newsgroups: comp.protocols.kerberos
Subject: Kerberos DES library interface spec
Message-ID: <9009062018.AA17038@xenon.lcs.mit.edu>
Date: 6 Sep 90 20:18:47 GMT
References: <90Sep1.164647edt.63965@gpu.utcs.utoronto.ca>
Sender: daemon@shelby.Stanford.EDU
Organization: The Internet
Lines: 21


I'm trying to use DES in a project and would like to allow people to plug in
their own DES code when it can't be shipped to them.  Can someone send me
a functional interface spec that Kerberos uses for this?  I only need
two functions; right now I've got the following interface:

	encryptBits (data, key)
		char	data[8];
		char	key[8];

	decryptBits (data, key)
		char	data[8];
		char	key[8];

where the data is modified in place, and the key is 56 bits packed 7 bits to
a byte, high bit unused.

What functions does Kerberos use for these two operations?

Keith Packard
keith@expo.lcs.mit.edu