public CertificationRequest(CertificationRequestInfo certificationRequestInfo, AlgorithmIdentifier signatureAlgorithm, BitString signature)
     : base(certificationRequestInfo, signatureAlgorithm, signature)
 {            
 }
 public SubjectPublicKeyInfo(AlgorithmIdentifier algorithm, BitString subjectPublicKey) : base(algorithm, subjectPublicKey)
 {            
 }