CrlIdentifier.cs :  » PDF » iTextSharp » Org » BouncyCastle » Asn1 » Esf » C# / CSharp Open Source

using System;

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

namespace Org.BouncyCastle.Asn1.Esf{
  /// <remarks>
  /// RFC 3126: 4.2.2 Complete Revocation Refs Attribute Definition
  /// <code>
  /// CrlIdentifier ::= SEQUENCE 
  /// {
  ///   crlissuer    Name,
  ///   crlIssuedTime  UTCTime,
  ///   crlNumber    INTEGER OPTIONAL
  /// }
  /// </code>
  /// </remarks>
  public class CrlIdentifier
    : Asn1Encodable
  {
    private readonly X509Name  crlIssuer;
    private readonly DerUtcTime  crlIssuedTime;
    private readonly DerInteger  crlNumber;

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

      if (obj is Asn1Sequence)
        return new CrlIdentifier((Asn1Sequence) obj);

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

    private CrlIdentifier(
      Asn1Sequence seq)
    {
      if (seq == null)
        throw new ArgumentNullException("seq");
      if (seq.Count < 2 || seq.Count > 3)
        throw new ArgumentException("Bad sequence size: " + seq.Count, "seq");

      this.crlIssuer = X509Name.GetInstance(seq[0]);
      this.crlIssuedTime = DerUtcTime.GetInstance(seq[1]);

      if (seq.Count > 2)
      {
        this.crlNumber = DerInteger.GetInstance(seq[2]);
      }
    }

    public CrlIdentifier(
      X509Name  crlIssuer,
      DateTime  crlIssuedTime)
      : this(crlIssuer, crlIssuedTime, null)
    {
    }

    public CrlIdentifier(
      X509Name  crlIssuer,
      DateTime  crlIssuedTime,
      BigInteger  crlNumber)
    {
      if (crlIssuer == null)
        throw new ArgumentNullException("crlIssuer");

      this.crlIssuer = crlIssuer;
      this.crlIssuedTime = new DerUtcTime(crlIssuedTime);

      if (crlNumber != null)
      {
        this.crlNumber = new DerInteger(crlNumber);
      }
    }

    public X509Name CrlIssuer
    {
      get { return crlIssuer; }
    }

    public DateTime CrlIssuedTime
    {
      get { return crlIssuedTime.ToAdjustedDateTime(); }
    }

    public BigInteger CrlNumber
    {
      get { return crlNumber == null ? null : crlNumber.Value; }
    }

    public override Asn1Object ToAsn1Object()
    {
      Asn1EncodableVector v = new Asn1EncodableVector(
        crlIssuer.ToAsn1Object(), crlIssuedTime);

      if (crlNumber != null)
      {
        v.Add(crlNumber);
      }

      return new DerSequence(v);
    }
  }
}