public Class PKIHeaderBuilder

 PKIHeader ::= SEQUENCE {
           pvno                INTEGER     { cmp1999(1), cmp2000(2) },
           sender              GeneralName,
           -- identifies the sender
           recipient           GeneralName,
           -- identifies the intended recipient
           messageTime     [0] GeneralizedTime         OPTIONAL,
           -- time of production of this message (used when sender
           -- believes that the transport will be "suitable"; i.e.,
           -- that the time will still be meaningful upon receipt)
           protectionAlg   [1] AlgorithmIdentifier     OPTIONAL,
           -- algorithm used for calculation of protection bits
           senderKID       [2] KeyIdentifier           OPTIONAL,
           recipKID        [3] KeyIdentifier           OPTIONAL,
           -- to identify specific keys used for protection
           transactionID   [4] OCTET STRING            OPTIONAL,
           -- identifies the transaction; i.e., this will be the same in
           -- corresponding request, response, certConf, and PKIConf
           -- messages
           senderNonce     [5] OCTET STRING            OPTIONAL,
           recipNonce      [6] OCTET STRING            OPTIONAL,
           -- nonces used to provide replay protection, senderNonce
           -- is inserted by the creator of this message; recipNonce
           -- is a nonce previously inserted in a related message by
           -- the intended recipient of this message
           freeText        [7] PKIFreeText             OPTIONAL,
           -- this may be used to indicate context-specific instructions
           -- (this field is intended for human consumption)
           generalInfo     [8] SEQUENCE SIZE (1..MAX) OF
                                InfoTypeAndValue     OPTIONAL
           -- this may be used to convey context-specific information
           -- (this field not primarily intended for human consumption)
}

Returns:PKIHeader

a basic ASN.1 object representation.