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using System;
using System.Collections.Generic;
using Org.BouncyCastle.Asn1;
using Org.BouncyCastle.Asn1.Tsp;
using Org.BouncyCastle.Asn1.X509;
using Org.BouncyCastle.Math;
using Org.BouncyCastle.Utilities;
namespace Org.BouncyCastle.Tsp
{
/**
* Generator for RFC 3161 Time Stamp Request objects.
*/
public class TimeStampRequestGenerator
{
private DerObjectIdentifier reqPolicy;
private DerBoolean certReq;
private Dictionary<DerObjectIdentifier, X509Extension> m_extensions =
new Dictionary<DerObjectIdentifier, X509Extension>();
private List<DerObjectIdentifier> m_ordering = new List<DerObjectIdentifier>();
public void SetReqPolicy(string reqPolicy)
{
this.reqPolicy = new DerObjectIdentifier(reqPolicy);
}
public void SetCertReq(bool certReq)
{
this.certReq = DerBoolean.GetInstance(certReq);
}
/**
* add a given extension field for the standard extensions tag (tag 3)
* @throws IOException
*/
public virtual void AddExtension(DerObjectIdentifier oid, bool critical, Asn1Encodable extValue)
{
this.AddExtension(oid, critical, extValue.GetEncoded());
}
/**
* add a given extension field for the standard extensions tag
* The value parameter becomes the contents of the octet string associated
* with the extension.
*/
public virtual void AddExtension(DerObjectIdentifier oid, bool critical, byte[] extValue)
{
m_extensions.Add(oid, new X509Extension(critical, new DerOctetString(extValue)));
m_ordering.Add(oid);
}
public TimeStampRequest Generate(string digestAlgorithm, byte[] digest)
{
return Generate(digestAlgorithm, digest, null);
}
public TimeStampRequest Generate(string digestAlgorithmOid, byte[] digest, BigInteger nonce)
{
if (digestAlgorithmOid == null)
throw new ArgumentException("No digest algorithm specified");
DerObjectIdentifier digestAlgOid = new DerObjectIdentifier(digestAlgorithmOid);
AlgorithmIdentifier algID = new AlgorithmIdentifier(digestAlgOid, DerNull.Instance);
MessageImprint messageImprint = new MessageImprint(algID, digest);
X509Extensions ext = null;
if (m_ordering.Count > 0)
{
ext = new X509Extensions(m_ordering, m_extensions);
}
DerInteger derNonce = nonce == null ? null : new DerInteger(nonce);
return new TimeStampRequest(
new TimeStampReq(messageImprint, reqPolicy, derNonce, certReq, ext));
}
public virtual TimeStampRequest Generate(DerObjectIdentifier digestAlgorithm, byte[] digest)
{
return Generate(digestAlgorithm.Id, digest);
}
public virtual TimeStampRequest Generate(DerObjectIdentifier digestAlgorithm, byte[] digest, BigInteger nonce)
{
return Generate(digestAlgorithm.Id, digest, nonce);
}
}
}
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