Asn1Encodable.cs :  » PDF » iTextSharp » Org » BouncyCastle » Asn1 » C# / CSharp Open Source

using System.IO;

namespace Org.BouncyCastle.Asn1{
  public abstract class Asn1Encodable
    : IAsn1Convertible
    {
    public const string Der = "DER";
    public const string Ber = "BER";

    public byte[] GetEncoded()
        {
            MemoryStream bOut = new MemoryStream();
            Asn1OutputStream aOut = new Asn1OutputStream(bOut);

      aOut.WriteObject(this);

      return bOut.ToArray();
        }

    public byte[] GetEncoded(
      string encoding)
    {
      if (encoding.Equals(Der))
      {
        MemoryStream bOut = new MemoryStream();
        DerOutputStream dOut = new DerOutputStream(bOut);

        dOut.WriteObject(this);

        return bOut.ToArray();
      }

      return GetEncoded();
    }

    /**
    * Return the DER encoding of the object, null if the DER encoding can not be made.
    *
    * @return a DER byte array, null otherwise.
    */
    public byte[] GetDerEncoded()
    {
      try
      {
        return GetEncoded(Der);
      }
      catch (IOException)
      {
        return null;
      }
    }

    public sealed override int GetHashCode()
    {
      return ToAsn1Object().CallAsn1GetHashCode();
    }

    public sealed override bool Equals(
      object obj)
    {
      if (obj == this)
        return true;

      IAsn1Convertible other = obj as IAsn1Convertible;

      if (other == null)
        return false;

      Asn1Object o1 = ToAsn1Object();
      Asn1Object o2 = other.ToAsn1Object();

      return o1 == o2 || o1.CallAsn1Equals(o2);
    }

    public abstract Asn1Object ToAsn1Object();
    }
}