KekRecipientInfo
using Org.BouncyCastle.Asn1.X509;
using System;
namespace Org.BouncyCastle.Asn1.Cms
{
public class KekRecipientInfo : Asn1Encodable
{
private readonly DerInteger m_version;
private readonly KekIdentifier m_kekID;
private readonly AlgorithmIdentifier m_keyEncryptionAlgorithm;
private readonly Asn1OctetString m_encryptedKey;
public DerInteger Version => m_version;
public KekIdentifier KekID => m_kekID;
public AlgorithmIdentifier KeyEncryptionAlgorithm => m_keyEncryptionAlgorithm;
public Asn1OctetString EncryptedKey => m_encryptedKey;
public static KekRecipientInfo GetInstance(object obj)
{
if (obj == null)
return null;
KekRecipientInfo kekRecipientInfo = obj as KekRecipientInfo;
if (kekRecipientInfo != null)
return kekRecipientInfo;
return new KekRecipientInfo(Asn1Sequence.GetInstance(obj));
}
public static KekRecipientInfo GetInstance(Asn1TaggedObject obj, bool explicitly)
{
return new KekRecipientInfo(Asn1Sequence.GetInstance(obj, explicitly));
}
public static KekRecipientInfo GetTagged(Asn1TaggedObject taggedObject, bool declaredExplicit)
{
return new KekRecipientInfo(Asn1Sequence.GetTagged(taggedObject, declaredExplicit));
}
public KekRecipientInfo(KekIdentifier kekID, AlgorithmIdentifier keyEncryptionAlgorithm, Asn1OctetString encryptedKey)
{
m_version = DerInteger.Four;
if (kekID == null)
throw new ArgumentNullException("kekID");
m_kekID = kekID;
if (keyEncryptionAlgorithm == null)
throw new ArgumentNullException("keyEncryptionAlgorithm");
m_keyEncryptionAlgorithm = keyEncryptionAlgorithm;
if (encryptedKey == null)
throw new ArgumentNullException("encryptedKey");
m_encryptedKey = encryptedKey;
}
[Obsolete("Use 'GetInstance' instead")]
public KekRecipientInfo(Asn1Sequence seq)
{
int count = seq.Count;
if (count != 4)
throw new ArgumentException("Bad sequence size: " + count.ToString(), "seq");
m_version = DerInteger.GetInstance(seq[0]);
m_kekID = KekIdentifier.GetInstance(seq[1]);
m_keyEncryptionAlgorithm = AlgorithmIdentifier.GetInstance(seq[2]);
m_encryptedKey = Asn1OctetString.GetInstance(seq[3]);
}
public override Asn1Object ToAsn1Object()
{
return new DerSequence(m_version, m_kekID, m_keyEncryptionAlgorithm, m_encryptedKey);
}
}
}