CertificateList.cs :  » PDF » iTextSharp » Org » BouncyCastle » Asn1 » X509 » C# / CSharp Open Source

using System;
using System.Collections;

using Org.BouncyCastle.Asn1;

namespace Org.BouncyCastle.Asn1.X509{
    /**
     * PKIX RFC-2459
     *
     * The X.509 v2 CRL syntax is as follows.  For signature calculation,
     * the data that is to be signed is ASN.1 Der encoded.
     *
     * <pre>
     * CertificateList  ::=  Sequence  {
     *      tbsCertList          TbsCertList,
     *      signatureAlgorithm   AlgorithmIdentifier,
     *      signatureValue       BIT STRING  }
     * </pre>
     */
    public class CertificateList
        : Asn1Encodable
    {
        private readonly TbsCertificateList  tbsCertList;
        private readonly AlgorithmIdentifier sigAlgID;
        private readonly DerBitString sig;

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

    public static CertificateList GetInstance(
            object obj)
        {
            if (obj is CertificateList)
            {
                return (CertificateList) obj;
            }

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

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

    private CertificateList(
            Asn1Sequence seq)
        {
      if (seq.Count != 3)
        throw new ArgumentException("sequence wrong size for CertificateList", "seq");

      tbsCertList = TbsCertificateList.GetInstance(seq[0]);
      sigAlgID = AlgorithmIdentifier.GetInstance(seq[1]);
      sig = DerBitString.GetInstance(seq[2]);
        }

    public TbsCertificateList TbsCertList
    {
      get { return tbsCertList; }
    }

    public CrlEntry[] GetRevokedCertificates()
        {
            return tbsCertList.GetRevokedCertificates();
        }

    public IEnumerable GetRevokedCertificateEnumeration()
    {
      return tbsCertList.GetRevokedCertificateEnumeration();
    }

    public AlgorithmIdentifier SignatureAlgorithm
    {
      get { return sigAlgID; }
    }

    public DerBitString Signature
    {
      get { return sig; }
    }

    public int Version
    {
      get { return tbsCertList.Version; }
    }

    public X509Name Issuer
    {
      get { return tbsCertList.Issuer; }
    }

    public Time ThisUpdate
    {
      get { return tbsCertList.ThisUpdate; }
    }

    public Time NextUpdate
    {
      get { return tbsCertList.NextUpdate; }
    }

    public override Asn1Object ToAsn1Object()
        {
      return new DerSequence(tbsCertList, sigAlgID, sig);
        }
    }
}