ietf-openpgp
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Re: Another draft coming your way.

1998-06-15 17:06:47
In looking at the source to PGP 5.5, I see that it had defined hash
algorithm 4 as an experimental double-width version of SHA.  It never
created messages with that hash, but if it sees hash algorithm 4, it will
think that is double-SHA rather than HAVAL as the spec has it.  Can we
reserve hash algorithm 4 and redefine HAVAL to be 7?  That way 5.5 will
know that it is seeing an unrecognized hash if it ever sees hash 7,
and produce an error message.  Otherwise it is likely to report a bad
signature if it sees hash 4 because someone used HAVAL.

Hal

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