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

using System;
using System.Collections;

using Org.BouncyCastle.Asn1.X509;

namespace Org.BouncyCastle.Asn1.Pkcs{
    public class EncryptedPrivateKeyInfo
        : Asn1Encodable
    {
        private readonly AlgorithmIdentifier algId;
        private readonly Asn1OctetString data;

    private EncryptedPrivateKeyInfo(
            Asn1Sequence seq)
        {
      if (seq.Count != 2)
        throw new ArgumentException("Wrong number of elements in sequence", "seq");

            algId = AlgorithmIdentifier.GetInstance(seq[0]);
            data = Asn1OctetString.GetInstance(seq[1]);
        }

    public EncryptedPrivateKeyInfo(
            AlgorithmIdentifier  algId,
            byte[]        encoding)
        {
            this.algId = algId;
            this.data = new DerOctetString(encoding);
        }

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

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

      throw new ArgumentException("Unknown object in factory: " + obj.GetType().FullName, "obj");
    }

    public AlgorithmIdentifier EncryptionAlgorithm
    {
      get { return algId; }
    }

    public byte[] GetEncryptedData()
        {
            return data.GetOctets();
        }

    /**
         * Produce an object suitable for an Asn1OutputStream.
         * <pre>
         * EncryptedPrivateKeyInfo ::= Sequence {
         *      encryptionAlgorithm AlgorithmIdentifier {{KeyEncryptionAlgorithms}},
         *      encryptedData EncryptedData
         * }
         *
         * EncryptedData ::= OCTET STRING
         *
         * KeyEncryptionAlgorithms ALGORITHM-IDENTIFIER ::= {
         *          ... -- For local profiles
         * }
         * </pre>
         */
        public override Asn1Object ToAsn1Object()
        {
      return new DerSequence(algId, data);
        }
    }
}