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using System;
using System.Collections.Generic;
using System.IO;
using Org.BouncyCastle.Asn1;
using Org.BouncyCastle.Asn1.X509;
using Org.BouncyCastle.Crypto;
using Org.BouncyCastle.Math;
using Org.BouncyCastle.Security.Certificates;
using Org.BouncyCastle.Utilities;
namespace Org.BouncyCastle.X509
{
/// <remarks>Class to produce an X.509 Version 2 AttributeCertificate.</remarks>
public class X509V2AttributeCertificateGenerator
{
private readonly X509ExtensionsGenerator extGenerator = new X509ExtensionsGenerator();
private V2AttributeCertificateInfoGenerator acInfoGen;
public X509V2AttributeCertificateGenerator()
{
acInfoGen = new V2AttributeCertificateInfoGenerator();
}
/// <summary>Reset the generator</summary>
public void Reset()
{
acInfoGen = new V2AttributeCertificateInfoGenerator();
extGenerator.Reset();
}
/// <summary>Set the Holder of this Attribute Certificate.</summary>
public void SetHolder(
AttributeCertificateHolder holder)
{
acInfoGen.SetHolder(holder.holder);
}
/// <summary>Set the issuer.</summary>
public void SetIssuer(
AttributeCertificateIssuer issuer)
{
acInfoGen.SetIssuer(AttCertIssuer.GetInstance(issuer.form));
}
/// <summary>Set the serial number for the certificate.</summary>
public void SetSerialNumber(
BigInteger serialNumber)
{
acInfoGen.SetSerialNumber(new DerInteger(serialNumber));
}
public void SetNotBefore(
DateTime date)
{
acInfoGen.SetStartDate(new Asn1GeneralizedTime(date));
}
public void SetNotAfter(
DateTime date)
{
acInfoGen.SetEndDate(new Asn1GeneralizedTime(date));
}
/// <summary>Add an attribute.</summary>
public void AddAttribute(
X509Attribute attribute)
{
acInfoGen.AddAttribute(AttributeX509.GetInstance(attribute.ToAsn1Object()));
}
public void SetIssuerUniqueId(
bool[] iui)
{
// TODO convert bool array to bit string
//acInfoGen.SetIssuerUniqueID(iui);
throw new NotImplementedException("SetIssuerUniqueId()");
}
/// <summary>Add a given extension field for the standard extensions tag.</summary>
public void AddExtension(
string oid,
bool critical,
Asn1Encodable extensionValue)
{
extGenerator.AddExtension(new DerObjectIdentifier(oid), critical, extensionValue);
}
/// <summary>
/// Add a given extension field for the standard extensions tag.
/// The value parameter becomes the contents of the octet string associated
/// with the extension.
/// </summary>
public void AddExtension(
string oid,
bool critical,
byte[] extensionValue)
{
extGenerator.AddExtension(new DerObjectIdentifier(oid), critical, extensionValue);
}
/// <summary>
/// Generate a new <see cref="X509V2AttributeCertificate"/> using the provided <see cref="ISignatureFactory"/>.
/// </summary>
/// <param name="signatureFactory">A <see cref="ISignatureFactory">signature factory</see> with the necessary
/// algorithm details.</param>
/// <returns>An <see cref="X509V2AttributeCertificate"/>.</returns>
public X509V2AttributeCertificate Generate(ISignatureFactory signatureFactory)
{
var sigAlgID = (AlgorithmIdentifier)signatureFactory.AlgorithmDetails;
acInfoGen.SetSignature(sigAlgID);
if (!extGenerator.IsEmpty)
{
acInfoGen.SetExtensions(extGenerator.Generate());
}
AttributeCertificateInfo acInfo = acInfoGen.GenerateAttributeCertificateInfo();
IStreamCalculator<IBlockResult> streamCalculator = signatureFactory.CreateCalculator();
using (var sigStream = streamCalculator.Stream)
{
acInfo.EncodeTo(sigStream, Asn1Encodable.Der);
}
var signature = streamCalculator.GetResult().Collect();
return new X509V2AttributeCertificate(
new AttributeCertificate(acInfo, sigAlgID, new DerBitString(signature)));
}
/// <summary>
/// Allows enumeration of the signature names supported by the generator.
/// </summary>
public IEnumerable<string> SignatureAlgNames
{
get { return X509Utilities.GetAlgNames(); }
}
}
}
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