private string DigitalSign(string location, string id, string password, byte[] data)
{
foreach (var certificatePair in GetCertificates(location))
{
var certId = GetCertificateId(certificatePair.Key);
if (certId == id)
{
var rsa = CertificateManager.DecryptPrivateKey(certificatePair.Value, password);
if (rsa == null)
{
return(null);
}
var privateKey = DotNetUtilities.GetKeyPair(rsa).Private;
var signatureFactory = new Asn1SignatureFactory("SHA1WITHRSA", privateKey);
var signerInfoGenerator = new SignerInfoGeneratorBuilder().Build(signatureFactory, DotNetUtilities.FromX509Certificate(certificatePair.Key));
var generator = new CmsSignedDataGenerator();
generator.AddSignerInfoGenerator(signerInfoGenerator);
var signedData = generator.Generate(new CmsProcessableByteArray(data), true);
return(Uri.EscapeDataString(Convert.ToBase64String(signedData.GetEncoded())));
}
}
return(null);
}
