Re: Lotus Notes Encryption Strategies
Ollivier Robert (Ollivier.Robert@hsc.fr.net)
Tue, 14 Mar 1995 22:05:11 +0100 (MET)
> I have been looking at the methods used by Lotus Notes to do encryption on
> its mail transfers. It seems to use RC4 (Rivest Cipher) for domestic
> communications and RC2 for international communications.
Are you implying that RC2 is weaker than RC4 ? I've heard that the international
version used RC4 with a 40 bit keys ...
RC4 is known because someone posted on Usenet a source believed to be if not
the actual source at least something compatible with it.
> Both these keys seem rather small in comparison to something like PGP's
> 1028bit key.
Remember that PGP key sizes are for RSA not IDEA. IDEA uses 128 bits keys so the
key sizes are equivalent.
Noone knows anything -- to my knowledge -- about RC2 except that it is a block
cipher (RC4 is a stream cipher).
--
Ollivier ROBERT -=-=- Herve Schauer Consultants -=-=- roberto@hsc.fr.net
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