Signature
using Org.BouncyCastle.Asn1.X509;
using System;
namespace Org.BouncyCastle.Asn1.Ocsp
{
public class Signature : Asn1Encodable
{
private readonly AlgorithmIdentifier m_signatureAlgorithm;
private readonly DerBitString m_signatureValue;
private readonly Asn1Sequence m_certs;
public AlgorithmIdentifier SignatureAlgorithm => m_signatureAlgorithm;
public DerBitString SignatureValue => m_signatureValue;
public Asn1Sequence Certs => m_certs;
public static Signature GetInstance(object obj)
{
if (obj == null)
return null;
Signature signature = obj as Signature;
if (signature != null)
return signature;
return new Signature(Asn1Sequence.GetInstance(obj));
}
public static Signature GetInstance(Asn1TaggedObject obj, bool explicitly)
{
return new Signature(Asn1Sequence.GetInstance(obj, explicitly));
}
public static Signature GetTagged(Asn1TaggedObject taggedObject, bool declaredExplicit)
{
return new Signature(Asn1Sequence.GetTagged(taggedObject, declaredExplicit));
}
public Signature(AlgorithmIdentifier signatureAlgorithm, DerBitString signatureValue)
: this(signatureAlgorithm, signatureValue, null)
{
}
public Signature(AlgorithmIdentifier signatureAlgorithm, DerBitString signatureValue, Asn1Sequence certs)
{
if (signatureAlgorithm == null)
throw new ArgumentNullException("signatureAlgorithm");
m_signatureAlgorithm = signatureAlgorithm;
if (signatureValue == null)
throw new ArgumentNullException("signatureValue");
m_signatureValue = signatureValue;
m_certs = certs;
}
private Signature(Asn1Sequence seq)
{
int count = seq.Count;
if (count < 2 || count > 3)
throw new ArgumentException("Bad sequence size: " + count.ToString(), "seq");
int sequencePosition = 0;
m_signatureAlgorithm = AlgorithmIdentifier.GetInstance(seq[sequencePosition++]);
m_signatureValue = DerBitString.GetInstance(seq[sequencePosition++]);
m_certs = Asn1Utilities.ReadOptionalContextTagged(seq, ref sequencePosition, 0, true, Asn1Sequence.GetTagged);
if (sequencePosition != count)
throw new ArgumentException("Unexpected elements in sequence", "seq");
}
public byte[] GetSignatureOctets()
{
return m_signatureValue.GetOctets();
}
public override Asn1Object ToAsn1Object()
{
Asn1EncodableVector asn1EncodableVector = new Asn1EncodableVector(3);
asn1EncodableVector.Add(m_signatureAlgorithm, m_signatureValue);
asn1EncodableVector.AddOptionalTagged(true, 0, m_certs);
return new DerSequence(asn1EncodableVector);
}
}
}