using Org.BouncyCastle.Asn1.X509; using System; namespace Org.BouncyCastle.Asn1.Pkcs { public class CertificationRequestInfo : Asn1Encodable { private readonly DerInteger m_version; private readonly X509Name m_subject; private readonly SubjectPublicKeyInfo m_subjectPKInfo; private readonly Asn1Set m_attributes; public DerInteger Version => m_version; public X509Name Subject => m_subject; public SubjectPublicKeyInfo SubjectPublicKeyInfo => m_subjectPKInfo; public Asn1Set Attributes => m_attributes; public static CertificationRequestInfo GetInstance(object obj) { if (obj == null) return null; CertificationRequestInfo certificationRequestInfo = obj as CertificationRequestInfo; if (certificationRequestInfo != null) return certificationRequestInfo; return new CertificationRequestInfo(Asn1Sequence.GetInstance(obj)); } public static CertificationRequestInfo GetInstance(Asn1TaggedObject taggedObject, bool declaredExplicit) { return new CertificationRequestInfo(Asn1Sequence.GetInstance(taggedObject, declaredExplicit)); } public static CertificationRequestInfo GetTagged(Asn1TaggedObject taggedObject, bool declaredExplicit) { return new CertificationRequestInfo(Asn1Sequence.GetTagged(taggedObject, declaredExplicit)); } public CertificationRequestInfo(X509Name subject, SubjectPublicKeyInfo pkInfo, Asn1Set attributes) { m_version = DerInteger.Zero; if (subject == null) throw new ArgumentNullException("subject"); m_subject = subject; if (pkInfo == null) throw new ArgumentNullException("pkInfo"); m_subjectPKInfo = pkInfo; m_attributes = ValidateAttributes(attributes); } private CertificationRequestInfo(Asn1Sequence seq) { int count = seq.Count; int sequencePosition = 0; if (count < 3 || count > 4) throw new ArgumentException("Bad sequence size: " + count.ToString(), "seq"); m_version = DerInteger.GetInstance(seq[sequencePosition++]); m_subject = X509Name.GetInstance(seq[sequencePosition++]); m_subjectPKInfo = SubjectPublicKeyInfo.GetInstance(seq[sequencePosition++]); m_attributes = Asn1Utilities.ReadOptionalContextTagged(seq, ref sequencePosition, 0, false, Asn1Set.GetTagged); if (sequencePosition != count) throw new ArgumentException("Unexpected elements in sequence", "seq"); ValidateAttributes(m_attributes); } public override Asn1Object ToAsn1Object() { Asn1EncodableVector asn1EncodableVector = new Asn1EncodableVector(4); asn1EncodableVector.Add(m_version, m_subject, m_subjectPKInfo); asn1EncodableVector.AddOptionalTagged(false, 0, m_attributes); return new DerSequence(asn1EncodableVector); } private static Asn1Set ValidateAttributes(Asn1Set attributes) { if (attributes != null) { foreach (Asn1Encodable attribute in attributes) { AttributePkcs instance = AttributePkcs.GetInstance(attribute); if (PkcsObjectIdentifiers.Pkcs9AtChallengePassword.Equals(instance.AttrType) && instance.AttrValues.Count != 1) throw new ArgumentException("challengePassword attribute must have one value"); } return attributes; } return attributes; } } }