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

using System;

using Org.BouncyCastle.Asn1.X509;

namespace Org.BouncyCastle.Asn1.Mozilla{
  /**
   * This is designed to parse
   * the PublicKeyAndChallenge created by the KEYGEN tag included by
   * Mozilla based browsers.
   *  <pre>
   *  PublicKeyAndChallenge ::= SEQUENCE {
   *    spki SubjectPublicKeyInfo,
   *    challenge IA5STRING
   *  }
   *
   *  </pre>
   */
  public class PublicKeyAndChallenge
    : Asn1Encodable
  {
    private Asn1Sequence      pkacSeq;
    private SubjectPublicKeyInfo  spki;
    private DerIA5String      challenge;

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

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

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

    public PublicKeyAndChallenge(
      Asn1Sequence seq)
    {
      pkacSeq = seq;
      spki = SubjectPublicKeyInfo.GetInstance(seq[0]);
      challenge = DerIA5String.GetInstance(seq[1]);
    }

    public override Asn1Object ToAsn1Object()
    {
      return pkacSeq;
    }

    public SubjectPublicKeyInfo SubjectPublicKeyInfo
    {
      get { return spki; }
    }

    public DerIA5String Challenge
    {
      get { return challenge; }
    }
  }
}