public byte[] GetEncoded()
{
return(tstInfo.GetEncoded());
}
private CmsSignedData GenerateTimestamp(
TimeStampRequest request,
BigInteger serialNumber,
DateTime generalizedTime)
{
var messageImprint = new MessageImprint(
new AlgorithmIdentifier(
new DerObjectIdentifier(request.MessageImprintAlgOid)), request.GetMessageImprintDigest());
DerInteger nonce = request.Nonce == null ? null : new DerInteger(request.Nonce);
var tstInfo = new TstInfo(
new DerObjectIdentifier(_options.Policy.Value),
messageImprint,
new DerInteger(serialNumber),
new DerGeneralizedTime(generalizedTime),
_options.Accuracy,
DerBoolean.False,
nonce,
tsa: null,
extensions: null);
var content = new CmsProcessableByteArray(tstInfo.GetEncoded());
var signedAttributes = new Asn1EncodableVector();
var certificateBytes = new Lazy <byte[]>(() => Certificate.GetEncoded());
if (_options.SigningCertificateUsage.HasFlag(SigningCertificateUsage.V1))
{
byte[] hash = _options.SigningCertificateV1Hash ?? DigestUtilities.CalculateDigest("SHA-1", certificateBytes.Value);
var signingCertificate = new SigningCertificate(new EssCertID(hash));
var attributeValue = new DerSet(signingCertificate);
var attribute = new BcAttribute(PkcsObjectIdentifiers.IdAASigningCertificate, attributeValue);
signedAttributes.Add(attribute);
}
if (_options.SigningCertificateUsage.HasFlag(SigningCertificateUsage.V2))
{
byte[] hash = DigestUtilities.CalculateDigest("SHA-256", certificateBytes.Value);
var signingCertificateV2 = new SigningCertificateV2(new EssCertIDv2(hash));
var attributeValue = new DerSet(signingCertificateV2);
var attribute = new BcAttribute(PkcsObjectIdentifiers.IdAASigningCertificateV2, attributeValue);
signedAttributes.Add(attribute);
}
var generator = new CmsSignedDataGenerator();
if (_options.ReturnSigningCertificate)
{
var certificates = X509StoreFactory.Create(
"Certificate/Collection",
new X509CollectionStoreParameters(new[] { Certificate }));
generator.AddCertificates(certificates);
}
generator.AddSigner(
_keyPair.Private,
Certificate,
_options.SignatureHashAlgorithm.Value,
new BcAttributeTable(signedAttributes),
new BcAttributeTable(DerSet.Empty));
CmsSignedData signedCms = generator.Generate(
PkcsObjectIdentifiers.IdCTTstInfo.Id,
content,
encapsulate: true);
return(signedCms);
}