EncryptedData
using System;
namespace Org.BouncyCastle.Asn1.Cms
{
public class EncryptedData : Asn1Encodable
{
private readonly DerInteger m_version;
private readonly EncryptedContentInfo m_encryptedContentInfo;
private readonly Asn1Set m_unprotectedAttrs;
public virtual DerInteger Version => m_version;
public virtual EncryptedContentInfo EncryptedContentInfo => m_encryptedContentInfo;
public virtual Asn1Set UnprotectedAttrs => m_unprotectedAttrs;
public static EncryptedData GetInstance(object obj)
{
if (obj == null)
return null;
EncryptedData encryptedData = obj as EncryptedData;
if (encryptedData != null)
return encryptedData;
return new EncryptedData(Asn1Sequence.GetInstance(obj));
}
public static EncryptedData GetInstance(Asn1TaggedObject taggedObject, bool declaredExplicit)
{
return new EncryptedData(Asn1Sequence.GetInstance(taggedObject, declaredExplicit));
}
public static EncryptedData GetTagged(Asn1TaggedObject taggedObject, bool declaredExplicit)
{
return new EncryptedData(Asn1Sequence.GetTagged(taggedObject, declaredExplicit));
}
public EncryptedData(EncryptedContentInfo encInfo)
: this(encInfo, null)
{
}
public EncryptedData(EncryptedContentInfo encInfo, Asn1Set unprotectedAttrs)
{
m_version = ((unprotectedAttrs == null) ? DerInteger.Zero : DerInteger.Two);
if (encInfo == null)
throw new ArgumentNullException("encInfo");
m_encryptedContentInfo = encInfo;
m_unprotectedAttrs = unprotectedAttrs;
}
private EncryptedData(Asn1Sequence seq)
{
int count = seq.Count;
int sequencePosition = 0;
if (count < 2 || count > 3)
throw new ArgumentException("Bad sequence size: " + count.ToString(), "seq");
m_version = DerInteger.GetInstance(seq[sequencePosition++]);
m_encryptedContentInfo = EncryptedContentInfo.GetInstance(seq[sequencePosition++]);
m_unprotectedAttrs = Asn1Utilities.ReadOptionalContextTagged(seq, ref sequencePosition, 1, false, Asn1Set.GetTagged);
if (sequencePosition != count)
throw new ArgumentException("Unexpected elements in sequence", "seq");
}
public override Asn1Object ToAsn1Object()
{
Asn1EncodableVector asn1EncodableVector = new Asn1EncodableVector(3);
asn1EncodableVector.Add(m_version, m_encryptedContentInfo);
if (m_unprotectedAttrs != null)
asn1EncodableVector.Add(new BerTaggedObject(false, 1, m_unprotectedAttrs));
return new BerSequence(asn1EncodableVector);
}
}
}