/// <summary>
/// Timestamps data present in the TimestampRequest.
/// </summary>
internal async Task <SignedCms> GetTimestampAsync(TimestampRequest request, ILogger logger, CancellationToken token)
{
token.ThrowIfCancellationRequested();
if (request == null)
{
throw new ArgumentNullException(nameof(request));
}
if (logger == null)
{
throw new ArgumentNullException(nameof(logger));
}
// Allows us to track the request.
var nonce = GenerateNonce();
var rfc3161TimestampRequest = Rfc3161TimestampRequestFactory.Create(
request.HashedMessage,
request.HashAlgorithm.ConvertToSystemSecurityHashAlgorithmName(),
requestedPolicyId: null,
nonce: nonce,
requestSignerCertificates: true,
extensions: null);
// Request a timestamp
// The response status need not be checked here as lower level api will throw if the response is invalid
IRfc3161TimestampToken timestampToken = await rfc3161TimestampRequest.SubmitRequestAsync(
_timestamperUrl,
RequestTimeout);
// quick check for response validity
var normalizedNonce = rfc3161TimestampRequest.GetNonce();
ValidateTimestampResponse(normalizedNonce, request.HashedMessage, timestampToken);
var timestampCms = timestampToken.AsSignedCms();
ValidateTimestampCms(request.SigningSpecifications, timestampCms, timestampToken);
// If the timestamp signed CMS already has a complete chain for the signing certificate,
// it's ready to be added to the signature to be timestamped.
// However, a timestamp service is not required to include all certificates in a complete
// chain for the signing certificate in the SignedData.certificates collection.
// Some timestamp services include all certificates except the root in the
// SignedData.certificates collection.
var signerInfo = timestampCms.SignerInfos[0];
using (var chain = CertificateChainUtility.GetCertificateChain(
signerInfo.Certificate,
timestampCms.Certificates,
logger,
CertificateType.Timestamp))
{
return(EnsureCertificatesInCertificatesCollection(timestampCms, chain));
}
}
private Task <Signature> TimestampSignature(SignPackageRequest request, ILogger logger, Signature signature, CancellationToken token)
{
var timestampRequest = new TimestampRequest
{
SignatureValue = signature.GetBytes(),
SigningSpec = SigningSpecifications.V1,
TimestampHashAlgorithm = request.TimestampHashAlgorithm
};
return(_timestampProvider.TimestampSignatureAsync(timestampRequest, logger, token));
}
private Task <PrimarySignature> TimestampPrimarySignatureAsync(SignPackageRequest request, ILogger logger, PrimarySignature signature, CancellationToken token)
{
var signatureValue = signature.GetSignatureValue();
var messageHash = request.TimestampHashAlgorithm.ComputeHash(signatureValue);
var timestampRequest = new TimestampRequest(
signingSpecifications: SigningSpecifications.V1,
hashedMessage: messageHash,
hashAlgorithm: request.TimestampHashAlgorithm,
target: SignaturePlacement.PrimarySignature
);
return(_timestampProvider.TimestampSignatureAsync(signature, timestampRequest, logger, token));
}
/// <summary>
/// Timestamps data present in the TimestampRequest.
/// </summary>
public SignedCms GetTimestamp(TimestampRequest request, ILogger logger, CancellationToken token)
{
token.ThrowIfCancellationRequested();
if (request == null)
{
throw new ArgumentNullException(nameof(request));
}
if (logger == null)
{
throw new ArgumentNullException(nameof(logger));
}
// Allows us to track the request.
var nonce = GenerateNonce();
var rfc3161TimestampRequest = new Rfc3161TimestampRequest(
request.HashedMessage,
request.HashAlgorithm.ConvertToSystemSecurityHashAlgorithmName(),
nonce: nonce,
requestSignerCertificates: true);
// Request a timestamp
// The response status need not be checked here as lower level api will throw if the response is invalid
var timestampToken = rfc3161TimestampRequest.SubmitRequest(
_timestamperUrl,
TimeSpan.FromSeconds(_rfc3161RequestTimeoutSeconds));
// quick check for response validity
ValidateTimestampResponse(nonce, request.HashedMessage, timestampToken);
var timestampCms = timestampToken.AsSignedCms();
ValidateTimestampCms(request.SigningSpecifications, timestampCms);
// If the timestamp signed CMS already has a complete chain for the signing certificate,
// it's ready to be added to the signature to be timestamped.
// However, a timestamp service is not required to include all certificates in a complete
// chain for the signing certificate in the SignedData.certificates collection.
// Some timestamp services include all certificates except the root in the
// SignedData.certificates collection.
var signerInfo = timestampCms.SignerInfos[0];
var chain = CertificateChainUtility.GetCertificateChain(
signerInfo.Certificate,
timestampCms.Certificates,
logger,
CertificateType.Timestamp);
return(EnsureCertificatesInCertificatesCollection(timestampCms, chain));
}
/// <summary>
/// Timestamps data present in the TimestampRequest.
/// </summary>
public Task <PrimarySignature> TimestampSignatureAsync(PrimarySignature primarySignature, TimestampRequest request, ILogger logger, CancellationToken token)
{
var timestampCms = GetTimestamp(request, logger, token);
using (var signatureNativeCms = NativeCms.Decode(primarySignature.GetBytes()))
{
if (request.Target == SignaturePlacement.Countersignature)
{
signatureNativeCms.AddTimestampToRepositoryCountersignature(timestampCms);
}
else
{
signatureNativeCms.AddTimestamp(timestampCms);
}
return(Task.FromResult(PrimarySignature.Load(signatureNativeCms.Encode())));
}
}
/// <summary>
/// Timestamp a signature.
/// </summary>
public Task <PrimarySignature> TimestampSignatureAsync(PrimarySignature primarySignature, TimestampRequest timestampRequest, ILogger logger, CancellationToken token)
{
throw new NotImplementedException();
}
/// <summary>
/// Timestamps data present in the TimestampRequest.
/// </summary>
public async Task <PrimarySignature> TimestampSignatureAsync(PrimarySignature primarySignature, TimestampRequest request, ILogger logger, CancellationToken token)
{
SignedCms timestampCms = await GetTimestampAsync(request, logger, token);
using (ICms signatureCms = CmsFactory.Create(primarySignature.GetBytes()))
{
if (request.Target == SignaturePlacement.Countersignature)
{
signatureCms.AddTimestampToRepositoryCountersignature(timestampCms);
}
else
{
signatureCms.AddTimestamp(timestampCms);
}
return(PrimarySignature.Load(signatureCms.Encode()));
}
}
/// <summary>
/// Timestamps data present in the TimestampRequest.
/// </summary>
public Task <PrimarySignature> TimestampPrimarySignatureAsync(TimestampRequest request, ILogger logger, CancellationToken token)
{
var timestampedSignature = TimestampData(request, logger, token);
return(Task.FromResult(PrimarySignature.Load(timestampedSignature)));
}
/// <summary>
/// Timestamps data present in the TimestampRequest.
/// </summary>
public byte[] TimestampData(TimestampRequest request, ILogger logger, CancellationToken token)
{
token.ThrowIfCancellationRequested();
if (request == null)
{
throw new ArgumentNullException(nameof(request));
}
if (logger == null)
{
throw new ArgumentNullException(nameof(logger));
}
// Get the signatureValue from the signerInfo object
using (var signatureNativeCms = NativeCms.Decode(request.SignatureValue, detached: false))
{
var signatureValueHashByteArray = NativeCms.GetSignatureValueHash(
request.TimestampHashAlgorithm,
signatureNativeCms);
// Allows us to track the request.
var nonce = GenerateNonce();
var rfc3161TimestampRequest = new Rfc3161TimestampRequest(
signatureValueHashByteArray,
request.TimestampHashAlgorithm.ConvertToSystemSecurityHashAlgorithmName(),
nonce: nonce,
requestSignerCertificates: true);
// Request a timestamp
// The response status need not be checked here as lower level api will throw if the response is invalid
var timestampToken = rfc3161TimestampRequest.SubmitRequest(
_timestamperUrl,
TimeSpan.FromSeconds(_rfc3161RequestTimeoutSeconds));
// quick check for response validity
ValidateTimestampResponse(nonce, signatureValueHashByteArray, timestampToken);
var timestampCms = timestampToken.AsSignedCms();
ValidateTimestampCms(request.SigningSpec, timestampCms);
byte[] timestampByteArray;
using (var timestampNativeCms = NativeCms.Decode(timestampCms.Encode(), detached: false))
using (var chainHolder = new X509ChainHolder())
{
var chain = chainHolder.Chain;
var policy = chain.ChainPolicy;
policy.ApplicationPolicy.Add(new Oid(Oids.TimeStampingEku));
policy.VerificationFlags = X509VerificationFlags.IgnoreNotTimeValid | X509VerificationFlags.IgnoreCtlNotTimeValid;
policy.ExtraStore.AddRange(timestampCms.Certificates);
policy.RevocationFlag = X509RevocationFlag.ExcludeRoot;
policy.RevocationMode = X509RevocationMode.Online;
var timestampSignerCertificate = timestampCms.SignerInfos[0].Certificate;
if (timestampSignerCertificate == null)
{
throw new TimestampException(NuGetLogCode.NU3020, Strings.TimestampNoCertificate);
}
if (!chain.Build(timestampSignerCertificate))
{
var messages = CertificateChainUtility.GetMessagesFromChainStatuses(chain.ChainStatus);
throw new TimestampException(NuGetLogCode.NU3028, string.Format(CultureInfo.CurrentCulture, Strings.TimestampCertificateChainBuildFailure, string.Join(", ", messages)));
}
// Insert all the certificates into timestampCms
InsertTimestampCertChainIntoTimestampCms(timestampCms, chain, timestampNativeCms);
timestampByteArray = timestampNativeCms.Encode();
}
signatureNativeCms.AddTimestamp(timestampByteArray);
return(signatureNativeCms.Encode());
}
}
/// <summary>
/// Timestamps data present in the TimestampRequest.
/// </summary>
public byte[] TimestampData(TimestampRequest request, ILogger logger, CancellationToken token)
{
token.ThrowIfCancellationRequested();
if (request == null)
{
throw new ArgumentNullException(nameof(request));
}
if (logger == null)
{
throw new ArgumentNullException(nameof(logger));
}
// Get the signatureValue from the signerInfo object
using (var signatureNativeCms = NativeCms.Decode(request.SignatureValue, detached: false))
{
var signatureValueHashByteArray = NativeCms.GetSignatureValueHash(
request.TimestampHashAlgorithm,
signatureNativeCms);
// Allows us to track the request.
var nonce = GenerateNonce();
var rfc3161TimestampRequest = new Rfc3161TimestampRequest(
signatureValueHashByteArray,
request.TimestampHashAlgorithm.ConvertToSystemSecurityHashAlgorithmName(),
nonce: nonce,
requestSignerCertificates: true);
// Request a timestamp
// The response status need not be checked here as lower level api will throw if the response is invalid
var timestampToken = rfc3161TimestampRequest.SubmitRequest(
_timestamperUrl,
TimeSpan.FromSeconds(_rfc3161RequestTimeoutSeconds));
// ensure response is for this request
ValidateTimestampResponseNonce(nonce, timestampToken);
var timestampCms = timestampToken.AsSignedCms();
byte[] timestampByteArray;
using (var timestampNativeCms = NativeCms.Decode(timestampCms.Encode(), detached: false))
using (var timestampCertChain = new X509Chain())
{
var policy = timestampCertChain.ChainPolicy;
policy.ApplicationPolicy.Add(new Oid(Oids.TimeStampingEkuOid));
policy.VerificationFlags = X509VerificationFlags.IgnoreNotTimeValid;
policy.ExtraStore.AddRange(timestampCms.Certificates);
policy.RevocationFlag = X509RevocationFlag.ExcludeRoot;
policy.RevocationMode = X509RevocationMode.Online;
var timestampSignerCertificate = GetTimestampSignerCertificate(timestampCms);
if (DateTime.Now < timestampSignerCertificate.NotBefore)
{
throw new TimestampException(LogMessage.CreateError(
NuGetLogCode.NU3025,
string.Format(CultureInfo.CurrentCulture,
Strings.TimestampCertificateInvalid,
$"{Environment.NewLine}{CertificateUtility.X509Certificate2ToString(timestampSignerCertificate)}")));
}
if (!timestampCertChain.Build(timestampSignerCertificate))
{
throw new TimestampException(LogMessage.CreateError(
NuGetLogCode.NU3028,
string.Format(CultureInfo.CurrentCulture,
Strings.TimestampCertificateChainBuildFailure,
$"{Environment.NewLine}{CertificateUtility.X509Certificate2ToString(timestampSignerCertificate)}")));
}
// Insert all the certificates into timestampCms
InsertTimestampCertChainIntoTimestampCms(timestampCms, timestampCertChain, timestampNativeCms);
timestampByteArray = timestampCms.Encode();
}
signatureNativeCms.AddTimestamp(timestampByteArray);
return(signatureNativeCms.Encode());
}
}