public Stream Sign(Stream inputStream, Encoding encoding, string signatureXPath, IDictionary<string, string> signatureXPathNamespaces)
{
using (MemoryStream mInputStream = new MemoryStream())
{
inputStream.CopyTo(mInputStream);
mInputStream.Position = 0;
//Load xml in TElXMLDOMDocument
using (TElXMLDOMDocument xmlDocument = new TElXMLDOMDocument())
{
xmlDocument.LoadFromStream(mInputStream, encoding.HeaderName, true);
using (TElXMLKeyInfoX509Data x509KeyData = new TElXMLKeyInfoX509Data(false))
using (TElWinCertStorage winCertStorage = new TElWinCertStorage())
using (TElX509Certificate x509Certificate = GetX509Certificate(winCertStorage))
{
if (x509Certificate == null)
{
throw new Exception("Certificate not found.");
}
x509KeyData.IncludeKeyValue = true;
x509KeyData.Certificate = x509Certificate;
using (TElXMLSigner xmlSigner = GetXmlSigner(x509KeyData, GetXmlReference(xmlDocument)))
{
//Save signature value to definedxml node
TElXMLNamespaceMap map = new TElXMLNamespaceMap();
foreach (var ns in signatureXPathNamespaces)
{
map.AddNamespace(ns.Key, ns.Value);
}
TElXMLDOMNode signatureNode = xmlDocument.SelectNodes(signatureXPath, map)[0];
xmlSigner.Save(ref signatureNode);
MemoryStream outputStream = new MemoryStream();
xmlDocument.SaveToStream(outputStream, SBXMLDefs.Unit.xcmNone, encoding.HeaderName);
return outputStream;
}
}
}
}
}
public void SignInPlace(Stream inputStream)
{
TElOfficeDocument officeDocument = new TElOfficeDocument();
officeDocument.Open(inputStream, false);
using (TElWinCertStorage winCertStorage = new TElWinCertStorage())
{
using (TElXMLKeyInfoX509Data x509KeyData = new TElXMLKeyInfoX509Data(false))
{
TElX509Certificate x509Certificate = GetX509Certificate(winCertStorage);
if (x509Certificate == null)
{
throw new Exception("Certificate not found.");
}
x509KeyData.IncludeKeyValue = true;
x509KeyData.Certificate = x509Certificate;
if (officeDocument.OpenXMLDocument != null)
{
TElOfficeOpenXMLSignatureHandler openXMLSigHandler = new TElOfficeOpenXMLSignatureHandler();
officeDocument.AddSignature(openXMLSigHandler, true);
openXMLSigHandler.AddDocument();
openXMLSigHandler.Sign(x509Certificate);
officeDocument.Flush();
}
else if (officeDocument.BinaryDocument != null)
{
TElOfficeBinaryCryptoAPISignatureHandler BinCryptoAPISigHandler = new TElOfficeBinaryCryptoAPISignatureHandler();
officeDocument.AddSignature(BinCryptoAPISigHandler, true);
BinCryptoAPISigHandler.ExpireTime = DateTime.UtcNow.AddYears(100);
BinCryptoAPISigHandler.Sign(x509Certificate);
officeDocument.Flush();
}
else
{
throw new FormatException();
}
}
}
}
private TElX509Certificate GetX509Certificate(TElWinCertStorage winCertStorage)
{
winCertStorage.StorageType = TSBStorageType.stSystem;
winCertStorage.ReadOnly = true;
winCertStorage.SystemStores.Text = "MY";
winCertStorage.AccessType = TSBStorageAccessType.atLocalMachine;
TElX509Certificate certificate = null;
for (int i = 0; i < winCertStorage.Count; i++)
{
TElX509Certificate cert = winCertStorage.get_Certificates(i);
if (SBUtils.Unit.BinaryToString(cert.SerialNumber).ToLower() == this.SerialNumber.ToLower())
{
certificate = cert;
//Pass pinCode to certificate
certificate.KeyMaterial.KeyExchangePIN = this.PinCode;
certificate.KeyMaterial.SignaturePIN = this.PinCode;
break;
}
}
return certificate;
}
