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Re: Message Integrity

1999-04-27 16:57:44
On Fri, 23 Apr 1999, Werner Koch wrote:

Jon Callas <jon(_at_)callas(_dot_)org> writes:

I presume that this is a V4 signature, with signature type of 0 (binary
document), PKALG of 0 (no public-key algorithm), hash algorithm type of the
appropriate hash, no subpackets, two hash bytes that duplicate the

Hmmm, I think I have subpackets but I can drop them.

Same here - I include the time and keyid, but they were required for

high-order octets of the hash, and then a single MPI containing the hash.
Is this correct?

Yes.   And I put a onepass signature packet in front with a keyid of
all 0 and a pubkey algo of 0; it is not required for decryption.

My 1pass is optional, but the same thing happens.  It does start the
proper hash algorithm.

(I haven't done anything with the other method - a new MDC packet; too
many other projects at the moment).