CertID.cs :  » PDF » iTextSharp » Org » BouncyCastle » Asn1 » Ocsp » C# / CSharp Open Source

using System;

using Org.BouncyCastle.Asn1;
using Org.BouncyCastle.Asn1.X509;

namespace Org.BouncyCastle.Asn1.Ocsp{
    public class CertID
        : Asn1Encodable
    {
        private readonly AlgorithmIdentifier    hashAlgorithm;
        private readonly Asn1OctetString        issuerNameHash;
        private readonly Asn1OctetString        issuerKeyHash;
        private readonly DerInteger             serialNumber;

    public static CertID GetInstance(
      Asn1TaggedObject  obj,
      bool        explicitly)
    {
      return GetInstance(Asn1Sequence.GetInstance(obj, explicitly));
    }

    public static CertID GetInstance(
      object obj)
    {
      if (obj == null || obj is CertID)
      {
        return (CertID)obj;
      }

      if (obj is Asn1Sequence)
      {
        return new CertID((Asn1Sequence)obj);
      }

      throw new ArgumentException("unknown object in factory: " + obj.GetType().Name, "obj");
    }

    public CertID(
            AlgorithmIdentifier hashAlgorithm,
            Asn1OctetString     issuerNameHash,
            Asn1OctetString     issuerKeyHash,
            DerInteger          serialNumber)
        {
            this.hashAlgorithm = hashAlgorithm;
            this.issuerNameHash = issuerNameHash;
            this.issuerKeyHash = issuerKeyHash;
            this.serialNumber = serialNumber;
        }

    private CertID(
            Asn1Sequence seq)
        {
      if (seq.Count != 4)
        throw new ArgumentException("Wrong number of elements in sequence", "seq");

      this.hashAlgorithm = AlgorithmIdentifier.GetInstance(seq[0]);
            this.issuerNameHash = Asn1OctetString.GetInstance(seq[1]);
            this.issuerKeyHash = Asn1OctetString.GetInstance(seq[2]);
            this.serialNumber = DerInteger.GetInstance(seq[3]);
        }

    public AlgorithmIdentifier HashAlgorithm
    {
      get { return hashAlgorithm; }
    }

    public Asn1OctetString IssuerNameHash
    {
      get { return issuerNameHash; }
    }

    public Asn1OctetString IssuerKeyHash
    {
      get { return issuerKeyHash; }
    }

    public DerInteger SerialNumber
    {
      get { return serialNumber; }
    }

    /**
         * Produce an object suitable for an Asn1OutputStream.
         * <pre>
         * CertID          ::=     Sequence {
         *     hashAlgorithm       AlgorithmIdentifier,
         *     issuerNameHash      OCTET STRING, -- Hash of Issuer's DN
         *     issuerKeyHash       OCTET STRING, -- Hash of Issuers public key
         *     serialNumber        CertificateSerialNumber }
         * </pre>
         */
    public override Asn1Object ToAsn1Object()
    {
      return new DerSequence(hashAlgorithm, issuerNameHash, issuerKeyHash, serialNumber);
    }
  }
}