<PackageReference Include="BouncyCastle.Cryptography" Version="2.5.1" />

IssuerAndSerialNumber

using Org.BouncyCastle.Asn1.X509; using Org.BouncyCastle.Math; using System; namespace Org.BouncyCastle.Asn1.Pkcs { public class IssuerAndSerialNumber : Asn1Encodable { private readonly X509Name m_name; private readonly DerInteger m_certSerialNumber; public X509Name Name => m_name; public DerInteger CertificateSerialNumber => m_certSerialNumber; public static IssuerAndSerialNumber GetInstance(object obj) { if (obj == null) return null; IssuerAndSerialNumber issuerAndSerialNumber = obj as IssuerAndSerialNumber; if (issuerAndSerialNumber != null) return issuerAndSerialNumber; return new IssuerAndSerialNumber(Asn1Sequence.GetInstance(obj)); } public static IssuerAndSerialNumber GetInstance(Asn1TaggedObject taggedObject, bool declaredExplicit) { return new IssuerAndSerialNumber(Asn1Sequence.GetInstance(taggedObject, declaredExplicit)); } public static IssuerAndSerialNumber GetTagged(Asn1TaggedObject taggedObject, bool declaredExplicit) { return new IssuerAndSerialNumber(Asn1Sequence.GetTagged(taggedObject, declaredExplicit)); } private IssuerAndSerialNumber(Asn1Sequence seq) { int count = seq.Count; if (count != 2) throw new ArgumentException("Bad sequence size: " + count.ToString(), "seq"); m_name = X509Name.GetInstance(seq[0]); m_certSerialNumber = DerInteger.GetInstance(seq[1]); } public IssuerAndSerialNumber(X509Name name, BigInteger certSerialNumber) { if (name == null) throw new ArgumentNullException("name"); m_name = name; m_certSerialNumber = new DerInteger(certSerialNumber); } public IssuerAndSerialNumber(X509Name name, DerInteger certSerialNumber) { if (name == null) throw new ArgumentNullException("name"); m_name = name; if (certSerialNumber == null) throw new ArgumentNullException("certSerialNumber"); m_certSerialNumber = certSerialNumber; } public override Asn1Object ToAsn1Object() { return new DerSequence(m_name, m_certSerialNumber); } } }