System.Security.Cryptography.Pkcs.KeyAgreeRecipientInfo
The KeyAgreeRecipientInfo class defines key agreement recipient information. Key agreement algorithms typically use the Diffie-Hellman key agreement algorithm, in which the two parties that establish a shared cryptographic key both take part in its generation and, by definition, agree on that key. This is in contrast to key transport algorithms, in which one party generates the key unilaterally and sends, or transports it, to the other party.
The Date property retrieves the date and time of the start of the key agreement protocol by the originator.
The OriginatorIdentifierOrKey property retrieves information about the originator of the key agreement for key agreement algorithms that warrant it.
The OtherKeyAttribute property retrieves attributes of the keying material.