/**
* Get RFC 3161 timeStampToken.
* Method may return null indicating that timestamp should be skipped.
* @param imprint data imprint to be time-stamped
* @return encoded, TSA signed data of the timeStampToken
*/
public virtual byte[] GetTimeStampToken(byte[] imprint)
{
byte[] respBytes = null;
// Setup the time stamp request
TimeStampRequestGenerator tsqGenerator = new TimeStampRequestGenerator();
tsqGenerator.SetCertReq(true);
if (!string.IsNullOrEmpty(tsaReqPolicy))
{
tsqGenerator.SetReqPolicy(tsaReqPolicy);
}
// tsqGenerator.setReqPolicy("1.3.6.1.4.1.601.10.3.1");
BigInteger nonce = BigInteger.ValueOf(DateTime.Now.Ticks + Environment.TickCount);
TimeStampRequest request = tsqGenerator.Generate(DigestAlgorithms.GetAllowedDigests(digestAlgorithm), imprint, nonce);
byte[] requestBytes = request.GetEncoded();
// Call the communications layer
respBytes = GetTSAResponse(requestBytes);
// Handle the TSA response
TimeStampResponse response = new TimeStampResponse(respBytes);
// validate communication level attributes (RFC 3161 PKIStatus)
response.Validate(request);
PkiFailureInfo failure = response.GetFailInfo();
int value = (failure == null) ? 0 : failure.IntValue;
if (value != 0)
{
// @todo: Translate value of 15 error codes defined by PKIFailureInfo to string
throw new IOException(MessageLocalization.GetComposedMessage("invalid.tsa.1.response.code.2", tsaURL, value));
}
// @todo: validate the time stap certificate chain (if we want
// assure we do not sign using an invalid timestamp).
// extract just the time stamp token (removes communication status info)
TimeStampToken tsToken = response.TimeStampToken;
if (tsToken == null)
{
throw new IOException(MessageLocalization.GetComposedMessage("tsa.1.failed.to.return.time.stamp.token.2", tsaURL, response.GetStatusString()));
}
TimeStampTokenInfo tsTokenInfo = tsToken.TimeStampInfo; // to view details
byte[] encoded = tsToken.GetEncoded();
LOGGER.Info("Timestamp generated: " + tsTokenInfo.GenTime);
if (tsaInfo != null)
{
tsaInfo.InspectTimeStampTokenInfo(tsTokenInfo);
}
// Update our token size estimate for the next call (padded to be safe)
this.tokenSizeEstimate = encoded.Length + 32;
return(encoded);
}
/// <summary>Get RFC 3161 timeStampToken.</summary>
/// <remarks>
/// Get RFC 3161 timeStampToken.
/// Method may return null indicating that timestamp should be skipped.
/// </remarks>
/// <param name="imprint">data imprint to be time-stamped</param>
/// <returns>encoded, TSA signed data of the timeStampToken</returns>
/// <exception cref="System.IO.IOException"/>
/// <exception cref="Org.BouncyCastle.Tsp.TSPException"/>
public virtual byte[] GetTimeStampToken(byte[] imprint)
{
byte[] respBytes = null;
// Setup the time stamp request
TimeStampRequestGenerator tsqGenerator = new TimeStampRequestGenerator();
tsqGenerator.SetCertReq(true);
if (tsaReqPolicy != null && tsaReqPolicy.Length > 0)
{
tsqGenerator.SetReqPolicy(tsaReqPolicy);
}
// tsqGenerator.setReqPolicy("1.3.6.1.4.1.601.10.3.1");
BigInteger nonce = BigInteger.ValueOf(SystemUtil.GetTimeBasedSeed());
TimeStampRequest request = tsqGenerator.Generate(new DerObjectIdentifier(DigestAlgorithms.GetAllowedDigest
(digestAlgorithm)), imprint, nonce);
byte[] requestBytes = request.GetEncoded();
// Call the communications layer
respBytes = GetTSAResponse(requestBytes);
// Handle the TSA response
TimeStampResponse response = new TimeStampResponse(respBytes);
// validate communication level attributes (RFC 3161 PKIStatus)
response.Validate(request);
PkiFailureInfo failure = response.GetFailInfo();
int value = (failure == null) ? 0 : failure.IntValue;
if (value != 0)
{
// @todo: Translate value of 15 error codes defined by PKIFailureInfo to string
throw new PdfException(PdfException.InvalidTsa1ResponseCode2).SetMessageParams(tsaURL, value.ToString());
}
// @todo: validate the time stap certificate chain (if we want
// assure we do not sign using an invalid timestamp).
// extract just the time stamp token (removes communication status info)
TimeStampToken tsToken = response.TimeStampToken;
if (tsToken == null)
{
throw new PdfException(PdfException.Tsa1FailedToReturnTimeStampToken2).SetMessageParams(tsaURL, response.GetStatusString
());
}
TimeStampTokenInfo tsTokenInfo = tsToken.TimeStampInfo;
// to view details
byte[] encoded = tsToken.GetEncoded();
LOGGER.Info("Timestamp generated: " + tsTokenInfo.GenTime);
if (tsaInfo != null)
{
tsaInfo.InspectTimeStampTokenInfo(tsTokenInfo);
}
// Update our token size estimate for the next call (padded to be safe)
this.tokenSizeEstimate = encoded.Length + 32;
return(encoded);
}
