Hilton,
The KeyTransRecipientInfo syntax does not include a field to carry or
identify the originator's key management public key. This is required for
key agreement algorithms such as D-H.
The recipient's cert indicates which flavor must be used. If it is a key
transfer algorithm such as RSA, then the KeyTransRecipientInfo syntax is
used. If it is a key agreement algorithm such as D-H, then the
KeyAgreeRecipientInfo syntax is used.
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John Pawling, Director - Systems Engineering
J.G. Van Dyke & Associates, Inc., a Wang Global Company
jsp(_at_)jgvandyke(_dot_)com
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