/** * 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); // 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(GetDigestAlgorithm()), 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 info = tsToken.TimeStampInfo; // to view details byte[] encoded = tsToken.GetEncoded(); // Update our token size estimate for the next call (padded to be safe) this.tokenSizeEstimate = encoded.Length + 32; return encoded; }
/** * Get timestamp token - Bouncy Castle request encoding / decoding layer */ protected internal byte[] GetTimeStampToken(byte[] imprint) { byte[] respBytes = null; // Setup the time stamp request TimeStampRequestGenerator tsqGenerator = new TimeStampRequestGenerator(); tsqGenerator.SetCertReq(true); // 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(X509ObjectIdentifiers.IdSha1.Id, 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 Exception("Invalid TSA '" + tsaURL + "' response, code " + 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 Exception("TSA '" + tsaURL + "' failed to return time stamp token: " + response.GetStatusString()); } TimeStampTokenInfo info = tsToken.TimeStampInfo; // to view details byte[] encoded = tsToken.GetEncoded(); // Update our token size estimate for the next call (padded to be safe) this.tokSzEstimate = encoded.Length + 32; return encoded; }