ietf-smime
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RE: DH keypair generation (was RE: S/MIME V3 Msg Spec Comments)

1997-11-10 07:50:49
From: "Darren Harter" <dharter(_at_)classic(_dot_)msn(_dot_)com>

John,

We should also take care to ensure that DH derivatives that have
separate key-pairs (and thus certificates) for sending and receiving
are not ignored.

Darren Harter
dharter(_at_)msn(_dot_)com


Darren,
  I'm not clear on what scenario you have in mind.  DH long-term public
keys can be certified to allow the sender to authenticate the recipient,
but do not allow the recipient to authenticate the sender; for that a
certified signature key is required.

Can you describe the protocol/usage mode that requires two *certified*
DH public keys per entity, in addition to the certified signature key?