MQVuserKeyingMaterial.cs :  » PDF » iTextSharp » Org » BouncyCastle » Asn1 » Cms » Ecc » C# / CSharp Open Source

using System;

namespace Org.BouncyCastle.Asn1.Cms.Ecc{
  public class MQVuserKeyingMaterial
    : Asn1Encodable
  {
    private OriginatorPublicKey  ephemeralPublicKey;
    private Asn1OctetString    addedukm;

    public MQVuserKeyingMaterial(
      OriginatorPublicKey  ephemeralPublicKey,
      Asn1OctetString    addedukm)
    {
      // TODO Check ephemeralPublicKey not null

      this.ephemeralPublicKey = ephemeralPublicKey;
      this.addedukm = addedukm;
    }

    private MQVuserKeyingMaterial(
      Asn1Sequence seq)
    {
      // TODO Check seq has either 1 or 2 elements

      this.ephemeralPublicKey = OriginatorPublicKey.GetInstance(seq[0]);

      if (seq.Count > 1)
      {
        this.addedukm = Asn1OctetString.GetInstance(
          (Asn1TaggedObject)seq[1], true);
      }
    }

    /**
     * return an AuthEnvelopedData object from a tagged object.
     *
     * @param obj      the tagged object holding the object we want.
     * @param isExplicit true if the object is meant to be explicitly
     *                 tagged false otherwise.
     * @throws ArgumentException if the object held by the
     *                                  tagged object cannot be converted.
     */
    public static MQVuserKeyingMaterial GetInstance(
      Asn1TaggedObject  obj,
      bool        isExplicit)
    {
      return GetInstance(Asn1Sequence.GetInstance(obj, isExplicit));
    }

    /**
     * return an AuthEnvelopedData object from the given object.
     *
     * @param obj the object we want converted.
     * @throws ArgumentException if the object cannot be converted.
     */
    public static MQVuserKeyingMaterial GetInstance(
      object  obj)
    {
      if (obj == null || obj is MQVuserKeyingMaterial)
      {
        return (MQVuserKeyingMaterial)obj;
      }

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

      throw new ArgumentException("Invalid MQVuserKeyingMaterial: " + obj.GetType().Name);
    }
    
    public OriginatorPublicKey EphemeralPublicKey
    {
      get { return ephemeralPublicKey; }
    }

    public Asn1OctetString AddedUkm
    {
      get { return addedukm; }
    }

    /**
    * Produce an object suitable for an Asn1OutputStream.
    * <pre>
    * MQVuserKeyingMaterial ::= SEQUENCE {
    *   ephemeralPublicKey OriginatorPublicKey,
    *   addedukm [0] EXPLICIT UserKeyingMaterial OPTIONAL  }
    * </pre>
    */
    public override Asn1Object ToAsn1Object()
    {
      Asn1EncodableVector v = new Asn1EncodableVector(ephemeralPublicKey);

      if (addedukm != null)
      {
        v.Add(new DerTaggedObject(true, 0, addedukm));
      }

      return new DerSequence(v);
    }
  }
}