<PackageReference Include="BouncyCastle.Cryptography" Version="2.4.0" />

CertTemplateBuilder

public class CertTemplateBuilder
using Org.BouncyCastle.Asn1.X509; namespace Org.BouncyCastle.Asn1.Crmf { public class CertTemplateBuilder { private DerInteger version; private DerInteger serialNumber; private AlgorithmIdentifier signingAlg; private X509Name issuer; private OptionalValidity validity; private X509Name subject; private SubjectPublicKeyInfo publicKey; private DerBitString issuerUID; private DerBitString subjectUID; private X509Extensions extensions; public virtual CertTemplateBuilder SetVersion(int ver) { version = new DerInteger(ver); return this; } public virtual CertTemplateBuilder SetSerialNumber(DerInteger ser) { serialNumber = ser; return this; } public virtual CertTemplateBuilder SetSigningAlg(AlgorithmIdentifier aid) { signingAlg = aid; return this; } public virtual CertTemplateBuilder SetIssuer(X509Name name) { issuer = name; return this; } public virtual CertTemplateBuilder SetValidity(OptionalValidity v) { validity = v; return this; } public virtual CertTemplateBuilder SetSubject(X509Name name) { subject = name; return this; } public virtual CertTemplateBuilder SetPublicKey(SubjectPublicKeyInfo spki) { publicKey = spki; return this; } public virtual CertTemplateBuilder SetIssuerUID(DerBitString uid) { issuerUID = uid; return this; } public virtual CertTemplateBuilder SetSubjectUID(DerBitString uid) { subjectUID = uid; return this; } public virtual CertTemplateBuilder SetExtensions(X509Extensions extens) { extensions = extens; return this; } public virtual CertTemplate Build() { Asn1EncodableVector asn1EncodableVector = new Asn1EncodableVector(10); asn1EncodableVector.AddOptionalTagged(false, 0, version); asn1EncodableVector.AddOptionalTagged(false, 1, serialNumber); asn1EncodableVector.AddOptionalTagged(false, 2, signingAlg); asn1EncodableVector.AddOptionalTagged(true, 3, issuer); asn1EncodableVector.AddOptionalTagged(false, 4, validity); asn1EncodableVector.AddOptionalTagged(true, 5, subject); asn1EncodableVector.AddOptionalTagged(false, 6, publicKey); asn1EncodableVector.AddOptionalTagged(false, 7, issuerUID); asn1EncodableVector.AddOptionalTagged(false, 8, subjectUID); asn1EncodableVector.AddOptionalTagged(false, 9, extensions); return CertTemplate.GetInstance(new DerSequence(asn1EncodableVector)); } } }