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

using System;

namespace Org.BouncyCastle.Asn1{
  /**
   * A Null object.
   */
  public class DerNull
    : Asn1Null
  {
    public static readonly DerNull Instance = new DerNull(0);

    byte[] zeroBytes = new byte[0];

    [Obsolete("Use static Instance object")]
    public DerNull()
    {
    }

    protected internal DerNull(int dummy)
    {
    }

    internal override void Encode(
      DerOutputStream  derOut)
    {
      derOut.WriteEncoded(Asn1Tags.Null, zeroBytes);
    }

    protected override bool Asn1Equals(
      Asn1Object asn1Object)
    {
      return asn1Object is DerNull;
    }

    protected override int Asn1GetHashCode()
    {
      return -1;
    }
  }
}