ietf-openpgp
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Re: Message Integrity

1999-04-22 09:49:56
uri <uri(_at_)watson(_dot_)ibm(_dot_)com> writes:

Werner Koch says:
However, to come to a solution we should use the
        IV|checkbytes|plaintext|SHA1
proposal and assign a new packet type to it (and add a version number
just in case we want to change it again).

If the above is the *plaintext* - I agree.  I personally like

Sure.

implicit IV=0x00...0 and the plaintext prepended with random
128 bits.

So do I,  s/IV/random_bytes/

NO! With 128-bit cipher you MUST use 128-bit IV. [I understand it's

So we have to fix it in the RFC (I already implemented it this way).


-- 
Werner Koch at guug.de           www.gnupg.org           keyid 621CC013