Re: Lotus Notes Encryption Strategies

[Ollivier.Robert () hsc fr net (Ollivier Robert)]

> 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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