XmlLicenseTransform.Decryptor Property
Definition
Important
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Gets or sets the decryptor of the current XmlLicenseTransform object.
public:
property System::Security::Cryptography::Xml::IRelDecryptor ^ Decryptor { System::Security::Cryptography::Xml::IRelDecryptor ^ get(); void set(System::Security::Cryptography::Xml::IRelDecryptor ^ value); };
public System.Security.Cryptography.Xml.IRelDecryptor? Decryptor { get; set; }
public System.Security.Cryptography.Xml.IRelDecryptor Decryptor { get; set; }
member this.Decryptor : System.Security.Cryptography.Xml.IRelDecryptor with get, set
Public Property Decryptor As IRelDecryptor
Property Value
The decryptor of the current XmlLicenseTransform object.
Examples
The following code example shows how to validate an XML digital signature using the IRelDecryptor interface and the XmlLicenseTransform class.
void CheckSignatureWithEncryptedGrant(
String^ fileName, IRelDecryptor^ decryptor)
{
// Create a new XML document.
XmlDocument^ sourceDocument = gcnew XmlDocument();
XmlNamespaceManager^ namespaceManager =
gcnew XmlNamespaceManager(sourceDocument->NameTable);
// Format using white spaces.
sourceDocument->PreserveWhitespace = true;
// Load the passed XML file into the document.
sourceDocument->Load(fileName);
namespaceManager->AddNamespace("dsig",
SignedXml::XmlDsigNamespaceUrl);
// Find the "Signature" node and create a new
// XmlNodeList object.
XmlNodeList^ nodeList =
sourceDocument->SelectNodes("//dsig:Signature", namespaceManager);
for (int i = 0, count = nodeList->Count; i < count; i++)
{
XmlDocument^ clone = (XmlDocument^) sourceDocument->Clone();
XmlNodeList^ signatures =
clone->SelectNodes("//dsig:Signature", namespaceManager);
// Create a new SignedXml object and pass into it the
// XML document clone.
SignedXml^ signedDocument = gcnew SignedXml(clone);
// Load the signature node.
signedDocument->LoadXml((XmlElement^)signatures[i]);
// Set the context for license transform
Transform^ licenseTransform = ((Reference^)signedDocument->
SignedInfo->References[0])->TransformChain[0];
if ((licenseTransform::typeid == XmlLicenseTransform::typeid)
&& (decryptor != nullptr))
{
// Decryptor is used to decrypt encryptedGrant
// elements.
((XmlLicenseTransform^) licenseTransform)->Decryptor = decryptor;
}
// Check the signature and display the result.
if (signedDocument->CheckSignature())
{
Console::WriteLine("SUCCESS: " +
"CheckSignatureWithEncryptedGrant - issuer index #" + i);
}
else
{
Console::WriteLine("FAILURE: " +
"CheckSignatureWithEncryptedGrant - issuer index #" + i);
}
}
}
public static void CheckSignatureWithEncryptedGrant(string fileName, IRelDecryptor decryptor)
{
// Create a new XML document.
XmlDocument xmlDocument = new XmlDocument();
XmlNamespaceManager nsManager = new XmlNamespaceManager(xmlDocument.NameTable);
// Format using white spaces.
xmlDocument.PreserveWhitespace = true;
// Load the passed XML file into the document.
xmlDocument.Load(fileName);
nsManager.AddNamespace("dsig", SignedXml.XmlDsigNamespaceUrl);
// Find the "Signature" node and create a new XmlNodeList object.
XmlNodeList nodeList = xmlDocument.SelectNodes("//dsig:Signature", nsManager);
for (int i = 0, count = nodeList.Count; i < count; i++)
{
XmlDocument clone = xmlDocument.Clone() as XmlDocument;
XmlNodeList signatures = clone.SelectNodes("//dsig:Signature", nsManager);
// Create a new SignedXml object and pass into it the XML document clone.
SignedXml signedXml = new SignedXml(clone);
// Load the signature node.
signedXml.LoadXml((XmlElement)signatures[i]);
// Set the context for license transform
Transform trans = ((Reference)signedXml.SignedInfo.References[0]).TransformChain[0];
if (trans is XmlLicenseTransform)
{
// Decryptor is used to decrypt encryptedGrant elements.
if (decryptor != null)
(trans as XmlLicenseTransform).Decryptor = decryptor;
}
// Check the signature and display the result.
bool result = signedXml.CheckSignature();
if (result)
Console.WriteLine("SUCCESS: CheckSignatureWithEncryptedGrant - issuer index #" +
i.ToString());
else
Console.WriteLine("FAILURE: CheckSignatureWithEncryptedGrant - issuer index #" +
i.ToString());
}
}
Public Shared Sub CheckSignatureWithEncryptedGrant(ByVal fileName As String, ByVal decryptor As IRelDecryptor)
' Create a new XML document.
Dim xmlDocument As New XmlDocument()
Dim nsManager As New XmlNamespaceManager(xmlDocument.NameTable)
' Format using white spaces.
xmlDocument.PreserveWhitespace = True
' Load the passed XML file into the document.
xmlDocument.Load(fileName)
nsManager.AddNamespace("dsig", SignedXml.XmlDsigNamespaceUrl)
' Find the "Signature" node and create a new XmlNodeList object.
Dim nodeList As XmlNodeList = xmlDocument.SelectNodes("//dsig:Signature", nsManager)
Dim count = nodeList.Count
For i As Integer = 0 To count - 1
Dim clone As XmlDocument = xmlDocument.Clone()
Dim signatures As XmlNodeList = clone.SelectNodes("//dsig:Signature", nsManager)
' Create a new SignedXml object and pass into it the XML document clone.
Dim signedXml As New SignedXml(clone)
' Load the signature node.
signedXml.LoadXml(CType(signatures(i), XmlElement))
' Set the context for license transform
Dim trans As Transform = CType(signedXml.SignedInfo.References(0), Reference).TransformChain(0)
If TypeOf trans Is XmlLicenseTransform Then
' Decryptor is used to decrypt encryptedGrant elements.
If Not (decryptor Is Nothing) Then
CType(trans, XmlLicenseTransform).Decryptor = decryptor
End If
End If
' Check the signature and display the result.
Dim result As Boolean = signedXml.CheckSignature()
If result Then
Console.WriteLine("SUCCESS: CheckSignatureWithEncryptedGrant - issuer index #" + i.ToString())
Else
Console.WriteLine("FAILURE: CheckSignatureWithEncryptedGrant - issuer index #" + i.ToString())
End If
Next i
End Sub
End Class
Remarks
The XmlLicenseTransform object uses an IRelDecryptor interface to decrypt <encryptedGrant>
elements from the current <license>
element.
Applies to
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