public async Task TimestampData_WithValidInput_ReturnsTimestamp()
        {
            var logger           = new TestLogger();
            var timestampService = await _testFixture.GetDefaultTrustedTimestampServiceAsync();

            var timestampProvider = new Rfc3161TimestampProvider(timestampService.Url);
            var data = "Test data to be signed and timestamped";

            using (var authorCert = new X509Certificate2(_trustedTestCert.Source.Cert))
            {
                var signedCms      = SigningTestUtility.GenerateSignedCms(authorCert, Encoding.ASCII.GetBytes(data));
                var signatureValue = signedCms.Encode();

                var request = new TimestampRequest
                {
                    SigningSpec            = SigningSpecifications.V1,
                    TimestampHashAlgorithm = Common.HashAlgorithmName.SHA256,
                    Signature = signatureValue
                };

                // Act
                var timestampedData = timestampProvider.TimestampData(request, logger, CancellationToken.None);
                var timestampedCms  = new SignedCms();
                timestampedCms.Decode(timestampedData);

                // Assert
                timestampedData.Should().NotBeNull();
                timestampedCms.Should().NotBeNull();
                timestampedCms.Detached.Should().BeFalse();
                timestampedCms.ContentInfo.Should().NotBeNull();
                timestampedCms.SignerInfos.Count.Should().Be(1);
                timestampedCms.SignerInfos[0].UnsignedAttributes.Count.Should().Be(1);
                timestampedCms.SignerInfos[0].UnsignedAttributes[0].Oid.Value.Should().Be(Oids.SignatureTimeStampTokenAttribute);
            }
        }
        public void Rfc3161TimestampProvider_Success()
        {
            // Arrange
            var logger            = new TestLogger();
            var timestampProvider = new Rfc3161TimestampProvider(new Uri(_testTimestampServer));
            var data = "Test data to be signed and timestamped";

            using (var authorCert = new X509Certificate2(_trustedTestCert.Source.Cert))
            {
                var signedCms      = SigningTestUtility.GenerateSignedCms(authorCert, Encoding.ASCII.GetBytes(data));
                var signatureValue = signedCms.Encode();

                var request = new TimestampRequest
                {
                    Certificate            = authorCert,
                    SigningSpec            = SigningSpecifications.V1,
                    TimestampHashAlgorithm = Common.HashAlgorithmName.SHA256,
                    SignatureValue         = signatureValue
                };

                // Act
                var timestampedData = timestampProvider.TimestampData(request, logger, CancellationToken.None);
                var timestampedCms  = new SignedCms();
                timestampedCms.Decode(timestampedData);

                // Assert
                timestampedData.Should().NotBeNull();
                timestampedCms.Should().NotBeNull();
                timestampedCms.Detached.Should().BeFalse();
                timestampedCms.ContentInfo.Should().NotBeNull();
                timestampedCms.Certificates.Count.Should().Be(1);
                timestampedCms.SignerInfos.Count.Should().Be(1);
                timestampedCms.SignerInfos[0].UnsignedAttributes.Count.Should().Be(1);
                timestampedCms.SignerInfos[0].UnsignedAttributes[0].Oid.Value.Should().Be(Oids.SignatureTimeStampTokenAttributeOid);
            }
        }