non-standard CFB (Re: Lutz formal spec / ROT-13 persists)

Adam Back aba at
Fri Feb 13 00:26:32 CET 1998

Werner Koch <wk at> writes:
> By the way, is is really required that PGP's strange CFB mode is
> required for other ciphers that IDEA?

I argued against earlier on list, and argued for the non-standard CFB
to be depracated for all ciphers.  However I think pgp5.x already is
deployed with non-standard CFB for CAST (and I presume 3DES also).


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