public bool VerifyXmlFromStream(System.IO.Stream SignedXmlDocumentStream)
{
// load the document to be verified
XmlDocument xd = new XmlDocument();
xd.PreserveWhitespace = true;
SignedXmlDocumentStream.Position = 0; //Bugfix
xd.Load(SignedXmlDocumentStream);
SignedXmlWithId signedXml = new SignedXmlWithId(xd);
// load the first <signature> node and load the signature
XmlNode MessageSignatureNode =
xd.GetElementsByTagName("Signature")[0];
signedXml.LoadXml((XmlElement)MessageSignatureNode);
// get the cert from the signature
X509Certificate2 certificate = null;
foreach (KeyInfoClause clause in signedXml.KeyInfo)
{
if (clause is KeyInfoX509Data)
{
if (((KeyInfoX509Data)clause).Certificates.Count > 0)
{
certificate =
(X509Certificate2)((KeyInfoX509Data)clause).Certificates[0];
}
}
}
// check the signature and return the result.
return signedXml.CheckSignature(certificate, true);
}
public override string SignXml(XmlDocument Document)
{
// create detached envelope
XmlDocument envelope = new XmlDocument();
envelope.PreserveWhitespace = true;
envelope.AppendChild(envelope.CreateElement("Envelope"));
XmlElement message = envelope.CreateElement("Message");
message.InnerXml = Document.DocumentElement.OuterXml;
message.SetAttribute("Id", "MyObjectID");
envelope.DocumentElement.AppendChild(message);
SignedXmlWithId signedXml = new SignedXmlWithId(envelope);
signedXml.SigningKey = manager.Certificate.PrivateKey;
// Create a reference to be signed.
Reference reference = new Reference();
reference.Uri = "#MyObjectID";
if (c14)
{
XmlDsigC14NTransform env = new XmlDsigC14NTransform();
reference.AddTransform(env);
}
KeyInfo keyInfo = new KeyInfo();
KeyInfoX509Data keyInfoData = new KeyInfoX509Data(manager.Certificate);
keyInfo.AddClause(keyInfoData);
signedXml.KeyInfo = keyInfo;
// Add the reference to the SignedXml object.
signedXml.AddReference(reference);
// Compute the signature.
signedXml.ComputeSignature();
// Get the XML representation of the signature and save
// it to an XmlElement object.
XmlElement xmlDigitalSignature = signedXml.GetXml();
envelope.DocumentElement.AppendChild(
envelope.ImportNode(xmlDigitalSignature, true));
return envelope.OuterXml;
}
public override string SignXml(XmlDocument Document)
{
SignedXmlWithId signedXml = new SignedXmlWithId(Document);
signedXml.SigningKey = manager.Certificate.PrivateKey;
KeyInfo keyInfo = new KeyInfo();
KeyInfoX509Data keyInfoData = new KeyInfoX509Data(manager.Certificate);
keyInfo.AddClause(keyInfoData);
signedXml.KeyInfo = keyInfo;
// the DataObject has to point to a XmlNodeList
DataObject dataObject = new DataObject();
dataObject.Id = "MyObjectID1";
dataObject.Data =
new CustomXmlNodeList(new[] { Document.DocumentElement });
signedXml.AddObject(dataObject);
// Add the reference to the SignedXml object.
Reference reference = new Reference();
reference.Uri = "#MyObjectID1";
signedXml.AddReference(reference);
// Create a reference to be signed.
if (c14)
{
XmlDsigC14NTransform env = new XmlDsigC14NTransform();
reference.AddTransform(env);
}
// Compute the signature.
signedXml.ComputeSignature();
// Get the XML representation of the signature and save
// it to an XmlElement object.
XmlElement xmlDigitalSignature = signedXml.GetXml();
// create detached envelope
XmlDocument envelope = new XmlDocument();
envelope.AppendChild(envelope.CreateElement("Envelope"));
envelope.DocumentElement.AppendChild(
envelope.ImportNode(xmlDigitalSignature, true));
return envelope.OuterXml;
}
public override string SignXml(XmlDocument Document)
{
SignedXmlWithId signedXml = new SignedXmlWithId(Document);
signedXml.SigningKey = manager.Certificate.PrivateKey;
// Create a reference to be signed.
Reference reference = new Reference();
reference.Uri = "";
// Add an enveloped transformation to the reference.
XmlDsigEnvelopedSignatureTransform env =
new XmlDsigEnvelopedSignatureTransform(true);
reference.AddTransform(env);
if (c14)
{
XmlDsigC14NTransform c14t = new XmlDsigC14NTransform();
reference.AddTransform(c14t);
}
KeyInfo keyInfo = new KeyInfo();
KeyInfoX509Data keyInfoData = new KeyInfoX509Data(manager.Certificate);
keyInfo.AddClause(keyInfoData);
signedXml.KeyInfo = keyInfo;
// Add the reference to the SignedXml object.
signedXml.AddReference(reference);
// Compute the signature.
signedXml.ComputeSignature();
// Get the XML representation of the signature and save
// it to an XmlElement object.
XmlElement xmlDigitalSignature = signedXml.GetXml();
Document.DocumentElement.AppendChild(
Document.ImportNode(xmlDigitalSignature, true));
return Document.OuterXml;
}
