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

using System;

using Org.BouncyCastle.Utilities;

namespace Org.BouncyCastle.Asn1{
    /**
     * We insert one of these when we find a tag we don't recognise.
     */
    public class DerUnknownTag
        : Asn1Object
    {
    private readonly bool  isConstructed;
        private readonly int  tag;
        private readonly byte[]  data;

        /**
         * @param tag the tag value.
         * @param data the contents octets.
         */
        public DerUnknownTag(
            int    tag,
            byte[]  data)
      : this(false, tag, data)
        {
        }

    public DerUnknownTag(
      bool  isConstructed,
      int    tag,
      byte[]  data)
    {
      if (data == null)
        throw new ArgumentNullException("data");

      this.isConstructed = isConstructed;
      this.tag = tag;
      this.data = data;
    }

    public bool IsConstructed
    {
      get { return isConstructed; }
    }

    public int Tag
        {
      get { return tag; }
        }

    public byte[] GetData()
        {
            return data;
        }

        internal override void Encode(
            DerOutputStream derOut)
        {
      derOut.WriteEncoded(isConstructed ? Asn1Tags.Constructed : 0, tag, data);
        }

    protected override bool Asn1Equals(
      Asn1Object asn1Object)
    {
      DerUnknownTag other = asn1Object as DerUnknownTag;

      if (other == null)
        return false;

      return this.isConstructed == other.isConstructed
        && this.tag == other.tag
        && Arrays.AreEqual(this.data, other.data);
        }

    protected override int Asn1GetHashCode()
    {
      return isConstructed.GetHashCode() ^ tag.GetHashCode() ^ Arrays.GetHashCode(data);
        }
    }
}