public RecipientEncryptedKey(
     KeyAgreeRecipientIdentifier id,
     Asn1OctetString encryptedKey)
 {
     this.identifier   = id;
     this.encryptedKey = encryptedKey;
 }
 private RecipientEncryptedKey(
     Asn1Sequence seq)
 {
     identifier   = KeyAgreeRecipientIdentifier.GetInstance(seq[0]);
     encryptedKey = (Asn1OctetString)seq[1];
 }