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

using System;

using Org.BouncyCastle.Asn1.X509;

namespace Org.BouncyCastle.Asn1.Cms{
  /**
  * <pre>
  * EncryptedContentInfo ::= SEQUENCE {
  *     contentType ContentType,
  *     contentEncryptionAlgorithm ContentEncryptionAlgorithmIdentifier,
  *     encryptedContent [0] IMPLICIT EncryptedContent OPTIONAL
  * }
  * </pre>
  */
  public class EncryptedContentInfoParser
  {
    private DerObjectIdentifier    _contentType;
    private AlgorithmIdentifier    _contentEncryptionAlgorithm;
    private Asn1TaggedObjectParser  _encryptedContent;

    public EncryptedContentInfoParser(
      Asn1SequenceParser seq)
    {
      _contentType = (DerObjectIdentifier)seq.ReadObject();
      _contentEncryptionAlgorithm = AlgorithmIdentifier.GetInstance(seq.ReadObject().ToAsn1Object());
      _encryptedContent = (Asn1TaggedObjectParser)seq.ReadObject();
    }

    public DerObjectIdentifier ContentType
    {
      get { return _contentType; }
    }

    public AlgorithmIdentifier ContentEncryptionAlgorithm
    {
      get { return _contentEncryptionAlgorithm; }
    }

    public IAsn1Convertible GetEncryptedContent(
      int tag)
    {
      return _encryptedContent.GetObjectParser(tag, false);
    }
  }
}