using Org.BouncyCastle.Asn1.X509; using System.Collections.Generic; namespace Org.BouncyCastle.Asn1.Pkcs { public class SignerInfo : Asn1Encodable { private DerInteger version; private IssuerAndSerialNumber issuerAndSerialNumber; private AlgorithmIdentifier digAlgorithm; private Asn1Set authenticatedAttributes; private AlgorithmIdentifier digEncryptionAlgorithm; private Asn1OctetString encryptedDigest; private Asn1Set unauthenticatedAttributes; public DerInteger Version => version; public IssuerAndSerialNumber IssuerAndSerialNumber => issuerAndSerialNumber; public Asn1Set AuthenticatedAttributes => authenticatedAttributes; public AlgorithmIdentifier DigestAlgorithm => digAlgorithm; public Asn1OctetString EncryptedDigest => encryptedDigest; public AlgorithmIdentifier DigestEncryptionAlgorithm => digEncryptionAlgorithm; public Asn1Set UnauthenticatedAttributes => unauthenticatedAttributes; public static SignerInfo GetInstance(object obj) { if (obj == null) return null; SignerInfo signerInfo = obj as SignerInfo; if (signerInfo != null) return signerInfo; return new SignerInfo(Asn1Sequence.GetInstance(obj)); } public SignerInfo(DerInteger version, IssuerAndSerialNumber issuerAndSerialNumber, AlgorithmIdentifier digAlgorithm, Asn1Set authenticatedAttributes, AlgorithmIdentifier digEncryptionAlgorithm, Asn1OctetString encryptedDigest, Asn1Set unauthenticatedAttributes) { this.version = version; this.issuerAndSerialNumber = issuerAndSerialNumber; this.digAlgorithm = digAlgorithm; this.authenticatedAttributes = authenticatedAttributes; this.digEncryptionAlgorithm = digEncryptionAlgorithm; this.encryptedDigest = encryptedDigest; this.unauthenticatedAttributes = unauthenticatedAttributes; } public SignerInfo(Asn1Sequence seq) { IEnumerator<Asn1Encodable> enumerator = seq.GetEnumerator(); enumerator.MoveNext(); version = (DerInteger)enumerator.Current; enumerator.MoveNext(); issuerAndSerialNumber = IssuerAndSerialNumber.GetInstance(enumerator.Current); enumerator.MoveNext(); digAlgorithm = AlgorithmIdentifier.GetInstance(enumerator.Current); enumerator.MoveNext(); Asn1Encodable current = enumerator.Current; Asn1TaggedObject asn1TaggedObject = current as Asn1TaggedObject; if (asn1TaggedObject != null) { authenticatedAttributes = Asn1Set.GetInstance(asn1TaggedObject, false); enumerator.MoveNext(); digEncryptionAlgorithm = AlgorithmIdentifier.GetInstance(enumerator.Current); } else { authenticatedAttributes = null; digEncryptionAlgorithm = AlgorithmIdentifier.GetInstance(current); } enumerator.MoveNext(); encryptedDigest = Asn1OctetString.GetInstance(enumerator.Current); if (enumerator.MoveNext()) unauthenticatedAttributes = Asn1Set.GetInstance((Asn1TaggedObject)enumerator.Current, false); else unauthenticatedAttributes = null; } public override Asn1Object ToAsn1Object() { Asn1EncodableVector asn1EncodableVector = new Asn1EncodableVector(version, issuerAndSerialNumber, digAlgorithm); asn1EncodableVector.AddOptionalTagged(false, 0, authenticatedAttributes); asn1EncodableVector.Add(digEncryptionAlgorithm, encryptedDigest); asn1EncodableVector.AddOptionalTagged(false, 1, unauthenticatedAttributes); return new DerSequence(asn1EncodableVector); } } }