using System; using Org.BouncyCastle.Asn1.Pkcs; namespace Org.BouncyCastle.Asn1.X509 { /** * an X509Certificate structure. *
     *  Certificate ::= Sequence {
     *      tbsCertificate          TbsCertificate,
     *      signatureAlgorithm      AlgorithmIdentifier,
     *      signature               BIT STRING
     *  }
     * 
*/ public class X509CertificateStructure : Asn1Encodable { private readonly TbsCertificateStructure tbsCert; private readonly AlgorithmIdentifier sigAlgID; private readonly DerBitString sig; public static X509CertificateStructure GetInstance( Asn1TaggedObject obj, bool explicitly) { return GetInstance(Asn1Sequence.GetInstance(obj, explicitly)); } public static X509CertificateStructure GetInstance( object obj) { if (obj is X509CertificateStructure) return (X509CertificateStructure)obj; if (obj == null) return null; return new X509CertificateStructure(Asn1Sequence.GetInstance(obj)); } public X509CertificateStructure( TbsCertificateStructure tbsCert, AlgorithmIdentifier sigAlgID, DerBitString sig) { if (tbsCert == null) throw new ArgumentNullException("tbsCert"); if (sigAlgID == null) throw new ArgumentNullException("sigAlgID"); if (sig == null) throw new ArgumentNullException("sig"); this.tbsCert = tbsCert; this.sigAlgID = sigAlgID; this.sig = sig; } private X509CertificateStructure( Asn1Sequence seq) { if (seq.Count != 3) throw new ArgumentException("sequence wrong size for a certificate", "seq"); // // correct x509 certficate // tbsCert = TbsCertificateStructure.GetInstance(seq[0]); sigAlgID = AlgorithmIdentifier.GetInstance(seq[1]); sig = DerBitString.GetInstance(seq[2]); } public TbsCertificateStructure TbsCertificate { get { return tbsCert; } } public int Version { get { return tbsCert.Version; } } public DerInteger SerialNumber { get { return tbsCert.SerialNumber; } } public X509Name Issuer { get { return tbsCert.Issuer; } } public Time StartDate { get { return tbsCert.StartDate; } } public Time EndDate { get { return tbsCert.EndDate; } } public X509Name Subject { get { return tbsCert.Subject; } } public SubjectPublicKeyInfo SubjectPublicKeyInfo { get { return tbsCert.SubjectPublicKeyInfo; } } public AlgorithmIdentifier SignatureAlgorithm { get { return sigAlgID; } } public DerBitString Signature { get { return sig; } } public override Asn1Object ToAsn1Object() { return new DerSequence(tbsCert, sigAlgID, sig); } } }