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

using System;

using Org.BouncyCastle.Asn1;

namespace Org.BouncyCastle.Asn1.X509{
    public class AttributeCertificateInfo
        : Asn1Encodable
    {
        internal readonly DerInteger      version;
        internal readonly Holder        holder;
        internal readonly AttCertIssuer      issuer;
        internal readonly AlgorithmIdentifier  signature;
        internal readonly DerInteger      serialNumber;
        internal readonly AttCertValidityPeriod  attrCertValidityPeriod;
        internal readonly Asn1Sequence      attributes;
        internal readonly DerBitString      issuerUniqueID;
        internal readonly X509Extensions    extensions;

    public static AttributeCertificateInfo GetInstance(
            Asn1TaggedObject  obj,
            bool        isExplicit)
        {
            return GetInstance(Asn1Sequence.GetInstance(obj, isExplicit));
        }

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

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

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

    private AttributeCertificateInfo(
            Asn1Sequence seq)
        {
      if (seq.Count < 7 || seq.Count > 9)
      {
        throw new ArgumentException("Bad sequence size: " + seq.Count);
      }

      this.version = DerInteger.GetInstance(seq[0]);
            this.holder = Holder.GetInstance(seq[1]);
            this.issuer = AttCertIssuer.GetInstance(seq[2]);
            this.signature = AlgorithmIdentifier.GetInstance(seq[3]);
            this.serialNumber = DerInteger.GetInstance(seq[4]);
            this.attrCertValidityPeriod = AttCertValidityPeriod.GetInstance(seq[5]);
            this.attributes = Asn1Sequence.GetInstance(seq[6]);

      for (int i = 7; i < seq.Count; i++)
            {
                Asn1Encodable obj = (Asn1Encodable) seq[i];

        if (obj is DerBitString)
                {
                    this.issuerUniqueID = DerBitString.GetInstance(seq[i]);
                }
                else if (obj is Asn1Sequence || obj is X509Extensions)
                {
                    this.extensions = X509Extensions.GetInstance(seq[i]);
                }
            }
        }

    public DerInteger Version
    {
      get { return version; }
    }

    public Holder Holder
    {
      get { return holder; }
    }

    public AttCertIssuer Issuer
    {
      get { return issuer; }
    }

    public AlgorithmIdentifier Signature
    {
      get { return signature; }
    }

    public DerInteger SerialNumber
    {
      get { return serialNumber; }
    }

    public AttCertValidityPeriod AttrCertValidityPeriod
    {
      get { return attrCertValidityPeriod; }
    }

    public Asn1Sequence Attributes
    {
      get { return attributes; }
    }

    public DerBitString IssuerUniqueID
    {
      get { return issuerUniqueID; }
    }

    public X509Extensions Extensions
    {
      get { return extensions; }
    }

    /**
         * Produce an object suitable for an Asn1OutputStream.
         * <pre>
         *  AttributeCertificateInfo ::= Sequence {
         *       version              AttCertVersion -- version is v2,
         *       holder               Holder,
         *       issuer               AttCertIssuer,
         *       signature            AlgorithmIdentifier,
         *       serialNumber         CertificateSerialNumber,
         *       attrCertValidityPeriod   AttCertValidityPeriod,
         *       attributes           Sequence OF Attr,
         *       issuerUniqueID       UniqueIdentifier OPTIONAL,
         *       extensions           Extensions OPTIONAL
         *  }
         *
         *  AttCertVersion ::= Integer { v2(1) }
         * </pre>
         */
        public override Asn1Object ToAsn1Object()
        {
            Asn1EncodableVector v = new Asn1EncodableVector(
        version, holder, issuer, signature, serialNumber,
        attrCertValidityPeriod, attributes);

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

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

      return new DerSequence(v);
        }
    }
}