EssCertIDv2
using Org.BouncyCastle.Asn1.Nist;
using Org.BouncyCastle.Asn1.X509;
using Org.BouncyCastle.Utilities;
using System;
namespace Org.BouncyCastle.Asn1.Ess
{
public class EssCertIDv2 : Asn1Encodable
{
private readonly AlgorithmIdentifier hashAlgorithm;
private readonly byte[] certHash;
private readonly IssuerSerial issuerSerial;
private static readonly AlgorithmIdentifier DefaultAlgID = new AlgorithmIdentifier(NistObjectIdentifiers.IdSha256);
public AlgorithmIdentifier HashAlgorithm => hashAlgorithm;
public IssuerSerial IssuerSerial => issuerSerial;
public static EssCertIDv2 GetInstance(object obj)
{
if (obj == null)
return null;
EssCertIDv2 essCertIDv = obj as EssCertIDv2;
if (essCertIDv != null)
return essCertIDv;
return new EssCertIDv2(Asn1Sequence.GetInstance(obj));
}
private EssCertIDv2(Asn1Sequence seq)
{
if (seq.Count > 3)
throw new ArgumentException("Bad sequence size: " + seq.Count.ToString(), "seq");
int num = 0;
if (seq[0] is Asn1OctetString)
hashAlgorithm = DefaultAlgID;
else
hashAlgorithm = AlgorithmIdentifier.GetInstance(seq[num++].ToAsn1Object());
certHash = Asn1OctetString.GetInstance(seq[num++].ToAsn1Object()).GetOctets();
if (seq.Count > num)
issuerSerial = IssuerSerial.GetInstance(Asn1Sequence.GetInstance(seq[num].ToAsn1Object()));
}
public EssCertIDv2(byte[] certHash)
: this(null, certHash, null)
{
}
public EssCertIDv2(AlgorithmIdentifier algId, byte[] certHash)
: this(algId, certHash, null)
{
}
public EssCertIDv2(byte[] certHash, IssuerSerial issuerSerial)
: this(null, certHash, issuerSerial)
{
}
public EssCertIDv2(AlgorithmIdentifier algId, byte[] certHash, IssuerSerial issuerSerial)
{
if (algId == null)
hashAlgorithm = DefaultAlgID;
else
hashAlgorithm = algId;
this.certHash = certHash;
this.issuerSerial = issuerSerial;
}
public byte[] GetCertHash()
{
return Arrays.Clone(certHash);
}
public override Asn1Object ToAsn1Object()
{
Asn1EncodableVector asn1EncodableVector = new Asn1EncodableVector(3);
if (!hashAlgorithm.Equals(DefaultAlgID))
asn1EncodableVector.Add(hashAlgorithm);
asn1EncodableVector.Add(new DerOctetString(certHash).ToAsn1Object());
asn1EncodableVector.AddOptional(issuerSerial);
return new DerSequence(asn1EncodableVector);
}
}
}