XmlLicenseTransform.Decryptor Propiedad

Definición

Espacio de nombres:

System.Security.Cryptography.Xml

Ensamblado:

System.Security.Cryptography.Xml.dll

Source:

XmlLicenseTransform.cs

Obtiene o establece el descriptor del objeto XmlLicenseTransform actual.

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; }

member this.Decryptor : System.Security.Cryptography.Xml.IRelDecryptor with get, set

Public Property Decryptor As IRelDecryptor

Valor de propiedad

IRelDecryptor

Descriptor del objeto XmlLicenseTransform actual.

Ejemplos

En el ejemplo de código siguiente se muestra cómo validar una firma digital XML mediante la IRelDecryptor interfaz y la XmlLicenseTransform clase .

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

Comentarios

El XmlLicenseTransform objeto usa una IRelDecryptor interfaz para descifrar <encryptedGrant> elementos del elemento actual <license> .