init commit

output/Libraries/BouncyCastle.Crypto/Org/BouncyCastle/Tsp/TimeStampResponseGenerator.cs

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+using System;
+using System.Collections;
+using System.IO;
+using Org.BouncyCastle.Asn1;
+using Org.BouncyCastle.Asn1.Cmp;
+using Org.BouncyCastle.Asn1.Cms;
+using Org.BouncyCastle.Asn1.Tsp;
+using Org.BouncyCastle.Math;
+using Org.BouncyCastle.Utilities.Date;
+
+namespace Org.BouncyCastle.Tsp;
+
+public class TimeStampResponseGenerator
+{
+	private class FailInfo : DerBitString
+	{
+		internal FailInfo(int failInfoValue)
+			: base(failInfoValue)
+		{
+		}
+	}
+
+	private PkiStatus status;
+
+	private Asn1EncodableVector statusStrings;
+
+	private int failInfo;
+
+	private TimeStampTokenGenerator tokenGenerator;
+
+	private IList acceptedAlgorithms;
+
+	private IList acceptedPolicies;
+
+	private IList acceptedExtensions;
+
+	public TimeStampResponseGenerator(TimeStampTokenGenerator tokenGenerator, IList acceptedAlgorithms)
+		: this(tokenGenerator, acceptedAlgorithms, null, null)
+	{
+	}
+
+	public TimeStampResponseGenerator(TimeStampTokenGenerator tokenGenerator, IList acceptedAlgorithms, IList acceptedPolicy)
+		: this(tokenGenerator, acceptedAlgorithms, acceptedPolicy, null)
+	{
+	}
+
+	public TimeStampResponseGenerator(TimeStampTokenGenerator tokenGenerator, IList acceptedAlgorithms, IList acceptedPolicies, IList acceptedExtensions)
+	{
+		this.tokenGenerator = tokenGenerator;
+		this.acceptedAlgorithms = acceptedAlgorithms;
+		this.acceptedPolicies = acceptedPolicies;
+		this.acceptedExtensions = acceptedExtensions;
+		statusStrings = new Asn1EncodableVector();
+	}
+
+	private void AddStatusString(string statusString)
+	{
+		statusStrings.Add(new DerUtf8String(statusString));
+	}
+
+	private void SetFailInfoField(int field)
+	{
+		failInfo |= field;
+	}
+
+	private PkiStatusInfo GetPkiStatusInfo()
+	{
+		Asn1EncodableVector asn1EncodableVector = new Asn1EncodableVector(new DerInteger((int)status));
+		if (statusStrings.Count > 0)
+		{
+			asn1EncodableVector.Add(new PkiFreeText(new DerSequence(statusStrings)));
+		}
+		if (failInfo != 0)
+		{
+			asn1EncodableVector.Add(new FailInfo(failInfo));
+		}
+		return new PkiStatusInfo(new DerSequence(asn1EncodableVector));
+	}
+
+	public TimeStampResponse Generate(TimeStampRequest request, BigInteger serialNumber, DateTime genTime)
+	{
+		return Generate(request, serialNumber, new DateTimeObject(genTime));
+	}
+
+	public TimeStampResponse Generate(TimeStampRequest request, BigInteger serialNumber, DateTimeObject genTime)
+	{
+		TimeStampResp resp;
+		try
+		{
+			if (genTime == null)
+			{
+				throw new TspValidationException("The time source is not available.", 512);
+			}
+			request.Validate(acceptedAlgorithms, acceptedPolicies, acceptedExtensions);
+			status = PkiStatus.Granted;
+			AddStatusString("Operation Okay");
+			PkiStatusInfo pkiStatusInfo = GetPkiStatusInfo();
+			ContentInfo instance;
+			try
+			{
+				TimeStampToken timeStampToken = tokenGenerator.Generate(request, serialNumber, genTime.Value);
+				byte[] encoded = timeStampToken.ToCmsSignedData().GetEncoded();
+				instance = ContentInfo.GetInstance(Asn1Object.FromByteArray(encoded));
+			}
+			catch (IOException e)
+			{
+				throw new TspException("Timestamp token received cannot be converted to ContentInfo", e);
+			}
+			resp = new TimeStampResp(pkiStatusInfo, instance);
+		}
+		catch (TspValidationException ex)
+		{
+			status = PkiStatus.Rejection;
+			SetFailInfoField(ex.FailureCode);
+			AddStatusString(ex.Message);
+			PkiStatusInfo pkiStatusInfo2 = GetPkiStatusInfo();
+			resp = new TimeStampResp(pkiStatusInfo2, null);
+		}
+		try
+		{
+			return new TimeStampResponse(resp);
+		}
+		catch (IOException e2)
+		{
+			throw new TspException("created badly formatted response!", e2);
+		}
+	}
+
+	public TimeStampResponse GenerateFailResponse(PkiStatus status, int failInfoField, string statusString)
+	{
+		this.status = status;
+		SetFailInfoField(failInfoField);
+		if (statusString != null)
+		{
+			AddStatusString(statusString);
+		}
+		PkiStatusInfo pkiStatusInfo = GetPkiStatusInfo();
+		TimeStampResp resp = new TimeStampResp(pkiStatusInfo, null);
+		try
+		{
+			return new TimeStampResponse(resp);
+		}
+		catch (IOException e)
+		{
+			throw new TspException("created badly formatted response!", e);
+		}
+	}
+}