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using System;
using Org.BouncyCastle.Asn1.Pkcs;
namespace Org.BouncyCastle.Asn1.X509
{
/**
* an X509Certificate structure.
* <pre>
* Certificate ::= Sequence {
* tbsCertificate TbsCertificate,
* signatureAlgorithm AlgorithmIdentifier,
* signature BIT STRING
* }
* </pre>
*/
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 byte[] GetSignatureOctets()
{
return sig.GetOctets();
}
public override Asn1Object ToAsn1Object()
{
return new DerSequence(tbsCert, sigAlgID, sig);
}
}
}
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