/**
  * Produce an object suitable for an Asn1OutputStream.
  * <pre>
  * KekIdentifier ::= Sequence {
  *     keyIdentifier OCTET STRING,
  *     date GeneralizedTime OPTIONAL,
  *     other OtherKeyAttribute OPTIONAL
  * }
  * </pre>
  */
 public override Asn1Object ToAsn1Object()
 {
     Asn1EncodableVector v = new Asn1EncodableVector(keyIdentifier);
     v.AddOptional(date, other);
     return new DerSequence(v);
 }