Bagikan melalui


EncryptedXml.Encrypt Metode

Definisi

Mengenkripsi XML luar elemen menggunakan sertifikat atau kunci yang ditentukan dalam tabel pemetaan kunci.

Overload

Encrypt(XmlElement, X509Certificate2)

Mengenkripsi XML luar elemen menggunakan sertifikat X.509 yang ditentukan.

Encrypt(XmlElement, String)

Mengenkripsi XML luar elemen menggunakan kunci yang ditentukan dalam tabel pemetaan kunci.

Contoh

Contoh kode berikut menunjukkan cara mengenkripsi dokumen XML menggunakan kunci konten.

#using <System.Security.dll>
#using <System.dll>
#using <System.Xml.dll>

using namespace System;
using namespace System::Xml;
using namespace System::Security::Cryptography;
using namespace System::Security::Cryptography::Xml;
static void Encrypt( XmlDocument^ Doc, String^ ElementToEncrypt, SymmetricAlgorithm^ Alg, String^ KeyName )
{
   
   // Check the arguments.  
   if ( Doc == nullptr )
      throw gcnew ArgumentNullException( L"Doc" );

   if ( ElementToEncrypt == nullptr )
      throw gcnew ArgumentNullException( L"ElementToEncrypt" );

   if ( Alg == nullptr )
      throw gcnew ArgumentNullException( L"Alg" );

   
   ////////////////////////////////////////////////
   // Find the specified element in the XmlDocument
   // object and create a new XmlElemnt object.
   ////////////////////////////////////////////////
   XmlElement^ elementToEncrypt = dynamic_cast<XmlElement^>(Doc->GetElementsByTagName( ElementToEncrypt )->Item( 0 ));
   
   // Throw an XmlException if the element was not found.
   if ( elementToEncrypt == nullptr )
   {
      throw gcnew XmlException( L"The specified element was not found" );
   }

   
   //////////////////////////////////////////////////
   // Create a new instance of the EncryptedXml class 
   // and use it to encrypt the XmlElement with the 
   // symmetric key.
   //////////////////////////////////////////////////
   EncryptedXml^ eXml = gcnew EncryptedXml;
   
   // Add the key mapping.
   eXml->AddKeyNameMapping( KeyName, Alg );
   
   // Encrypt the element.
   EncryptedData^ edElement = eXml->Encrypt( elementToEncrypt, KeyName );
   
   ////////////////////////////////////////////////////
   // Replace the element from the original XmlDocument
   // object with the EncryptedData element.
   ////////////////////////////////////////////////////
   EncryptedXml::ReplaceElement( elementToEncrypt, edElement, false );
}

static void Decrypt( XmlDocument^ Doc, SymmetricAlgorithm^ Alg, String^ KeyName )
{
   
   // Check the arguments.  
   if ( Doc == nullptr )
      throw gcnew ArgumentNullException( L"Doc" );

   if ( Alg == nullptr )
      throw gcnew ArgumentNullException( L"Alg" );

   if ( KeyName == nullptr )
      throw gcnew ArgumentNullException( L"KeyName" );

   
   // Create a new EncryptedXml object.
   EncryptedXml^ exml = gcnew EncryptedXml( Doc );
   
   // Add the key name mapping.
   exml->AddKeyNameMapping( KeyName, Alg );
   
   // Decrypt the XML document.
   exml->DecryptDocument();
}

int main()
{
   
   // Create an XmlDocument object.
   XmlDocument^ xmlDoc = gcnew XmlDocument;
   
   // Load an XML file into the XmlDocument object.
   try
   {
      xmlDoc->PreserveWhitespace = true;
      xmlDoc->Load( L"test.xml" );
   }
   catch ( Exception^ e ) 
   {
      Console::WriteLine( e->Message );
   }

   
   // Create a new TripleDES key. 
   TripleDESCryptoServiceProvider^ tDESkey = gcnew TripleDESCryptoServiceProvider;
   try
   {
      
      // Encrypt the "creditcard" element.
      Encrypt( xmlDoc, L"creditcard", tDESkey, L"tDesKey" );
      
      // Display the encrypted XML to the console.
      Console::WriteLine( L"Encrypted XML:" );
      Console::WriteLine();
      Console::WriteLine( xmlDoc->OuterXml );
      
      // Decrypt the "creditcard" element.
      Decrypt( xmlDoc, tDESkey, L"tDesKey" );
      
      // Display the encrypted XML to the console.
      Console::WriteLine();
      Console::WriteLine( L"Decrypted XML:" );
      Console::WriteLine();
      Console::WriteLine( xmlDoc->OuterXml );
   }
   catch ( Exception^ e ) 
   {
      Console::WriteLine( e->Message );
   }
   finally
   {
      
      // Clear the TripleDES key.
      tDESkey->Clear();
   }

}
using System;
using System.Xml;
using System.Security.Cryptography;
using System.Security.Cryptography.Xml;

class Program
{
    static void Main(string[] args)
    {

        // Create an XmlDocument object.
        XmlDocument xmlDoc = new XmlDocument();

        // Load an XML file into the XmlDocument object.
        try
        {
            xmlDoc.PreserveWhitespace = true;
            xmlDoc.Load("test.xml");
        }
        catch (Exception e)
        {
            Console.WriteLine(e.Message);
        }

        // Create a new TripleDES key.
        TripleDESCryptoServiceProvider tDESkey = new TripleDESCryptoServiceProvider();

        try
        {
            // Encrypt the "creditcard" element.
            Encrypt(xmlDoc, "creditcard", tDESkey, "tDesKey");

            // Display the encrypted XML to the console.
            Console.WriteLine("Encrypted XML:");
            Console.WriteLine();
            Console.WriteLine(xmlDoc.OuterXml);

            // Decrypt the "creditcard" element.
            Decrypt(xmlDoc, tDESkey, "tDesKey");

            // Display the encrypted XML to the console.
            Console.WriteLine();
            Console.WriteLine("Decrypted XML:");
            Console.WriteLine();
            Console.WriteLine(xmlDoc.OuterXml);
        }
        catch (Exception e)
        {
            Console.WriteLine(e.Message);
        }
        finally
        {
            // Clear the TripleDES key.
            tDESkey.Clear();
        }
    }

    public static void Encrypt(XmlDocument Doc, string ElementToEncrypt, SymmetricAlgorithm Alg, string KeyName)
    {
        // Check the arguments.
        if (Doc == null)
            throw new ArgumentNullException("Doc");
        if (ElementToEncrypt == null)
            throw new ArgumentNullException("ElementToEncrypt");
        if (Alg == null)
            throw new ArgumentNullException("Alg");

        ////////////////////////////////////////////////
        // Find the specified element in the XmlDocument
        // object and create a new XmlElemnt object.
        ////////////////////////////////////////////////

        XmlElement elementToEncrypt = Doc.GetElementsByTagName(ElementToEncrypt)[0] as XmlElement;

        // Throw an XmlException if the element was not found.
        if (elementToEncrypt == null)
        {
            throw new XmlException("The specified element was not found");
        }

        //////////////////////////////////////////////////
        // Create a new instance of the EncryptedXml class
        // and use it to encrypt the XmlElement with the
        // symmetric key.
        //////////////////////////////////////////////////

        EncryptedXml eXml = new EncryptedXml();

        // Add the key mapping.
        eXml.AddKeyNameMapping(KeyName, Alg);

        // Encrypt the element.
        EncryptedData edElement = eXml.Encrypt(elementToEncrypt, KeyName);

        ////////////////////////////////////////////////////
        // Replace the element from the original XmlDocument
        // object with the EncryptedData element.
        ////////////////////////////////////////////////////

        EncryptedXml.ReplaceElement(elementToEncrypt, edElement, false);
    }

    public static void Decrypt(XmlDocument Doc, SymmetricAlgorithm Alg, string KeyName)
    {
        // Check the arguments.
        if (Doc == null)
            throw new ArgumentNullException("Doc");
        if (Alg == null)
            throw new ArgumentNullException("Alg");
        if (KeyName == null)
            throw new ArgumentNullException("KeyName");

        // Create a new EncryptedXml object.
        EncryptedXml exml = new EncryptedXml(Doc);

        // Add the key name mapping.
        exml.AddKeyNameMapping(KeyName, Alg);

        // Decrypt the XML document.
        exml.DecryptDocument();
    }
}
Imports System.Xml
Imports System.Security.Cryptography
Imports System.Security.Cryptography.Xml



Module Program

    Sub Main(ByVal args() As String)

        ' Create an XmlDocument object.
        Dim xmlDoc As New XmlDocument()

        ' Load an XML file into the XmlDocument object.
        Try
            xmlDoc.PreserveWhitespace = True
            xmlDoc.Load("test.xml")
        Catch e As Exception
            Console.WriteLine(e.Message)
        End Try

        ' Create a new TripleDES key. 
        Dim tDESkey As New TripleDESCryptoServiceProvider()


        Try
            ' Encrypt the "creditcard" element.
            Encrypt(xmlDoc, "creditcard", tDESkey, "tDesKey")

            ' Display the encrypted XML to the console.
            Console.WriteLine("Encrypted XML:")
            Console.WriteLine()
            Console.WriteLine(xmlDoc.OuterXml)

            ' Decrypt the "creditcard" element.
            Decrypt(xmlDoc, tDESkey, "tDesKey")

            ' Display the encrypted XML to the console.
            Console.WriteLine()
            Console.WriteLine("Decrypted XML:")
            Console.WriteLine()
            Console.WriteLine(xmlDoc.OuterXml)
        Catch e As Exception
            Console.WriteLine(e.Message)
        Finally
            ' Clear the TripleDES key.
            tDESkey.Clear()
        End Try

    End Sub


    Sub Encrypt(ByVal Doc As XmlDocument, ByVal ElementToEncrypt As String, ByVal Alg As SymmetricAlgorithm, ByVal KeyName As String)
        ' Check the arguments.  
        If Doc Is Nothing Then
            Throw New ArgumentNullException("Doc")
        End If
        If ElementToEncrypt Is Nothing Then
            Throw New ArgumentNullException("ElementToEncrypt")
        End If
        If Alg Is Nothing Then
            Throw New ArgumentNullException("Alg")
        End If
        '''''''''''''''''''''''''''''''''''''''''''''''''''
        ' Find the specified element in the XmlDocument
        ' object and create a new XmlElemnt object.
        '''''''''''''''''''''''''''''''''''''''''''''''''''
        Dim elementEncrypt As XmlElement = Doc.GetElementsByTagName(ElementToEncrypt)(0) 


        ' Throw an XmlException if the element was not found.
        If ElementToEncrypt Is Nothing Then
            Throw New XmlException("The specified element was not found")
        End If

        '''''''''''''''''''''''''''''''''''''''''''''''''''
        ' Create a new instance of the EncryptedXml class 
        ' and use it to encrypt the XmlElement with the 
        ' symmetric key.
        '''''''''''''''''''''''''''''''''''''''''''''''''''
        Dim eXml As New EncryptedXml()

        ' Add the key mapping.
        eXml.AddKeyNameMapping(KeyName, Alg)

        ' Encrypt the element.
        Dim edElement As EncryptedData = eXml.Encrypt(elementEncrypt, KeyName)


        '''''''''''''''''''''''''''''''''''''''''''''''''''
        ' Replace the element from the original XmlDocument
        ' object with the EncryptedData element.
        '''''''''''''''''''''''''''''''''''''''''''''''''''
        EncryptedXml.ReplaceElement(elementEncrypt, edElement, False)

    End Sub


    Sub Decrypt(ByVal Doc As XmlDocument, ByVal Alg As SymmetricAlgorithm, ByVal KeyName As String)
        ' Check the arguments.  
        If Doc Is Nothing Then
            Throw New ArgumentNullException("Doc")
        End If
        If Alg Is Nothing Then
            Throw New ArgumentNullException("Alg")
        End If
        If KeyName Is Nothing Then
            Throw New ArgumentNullException("KeyName")
        End If
        ' Create a new EncryptedXml object.
        Dim exml As New EncryptedXml(Doc)

        ' Add the key name mapping.
        exml.AddKeyNameMapping(KeyName, Alg)

        ' Decrypt the XML document.
        exml.DecryptDocument()

    End Sub
End Module

Contoh kode berikut menunjukkan cara mengenkripsi dokumen XML menggunakan sertifikat X.509. Contoh ini membuat kunci sesi simetris untuk mengenkripsi dokumen lalu menggunakan sertifikat X.509 untuk menyematkan versi terenkripsi kunci sesi ke dalam dokumen XML.

#using <System.Security.dll>
#using <System.dll>
#using <System.Xml.dll>

using namespace System;
using namespace System::Xml;
using namespace System::Security::Cryptography;
using namespace System::Security::Cryptography::Xml;
using namespace System::Security::Cryptography::X509Certificates;
static void Encrypt( XmlDocument^ Doc, String^ ElementToEncrypt, X509Certificate2^ Cert )
{

   // Check the arguments.
   if ( Doc == nullptr )
      throw gcnew ArgumentNullException( L"Doc" );

   if ( ElementToEncrypt == nullptr )
      throw gcnew ArgumentNullException( L"ElementToEncrypt" );

   if ( Cert == nullptr )
      throw gcnew ArgumentNullException( L"Cert" );


   ////////////////////////////////////////////////
   // Find the specified element in the XmlDocument
   // object and create a new XmlElemnt object.
   ////////////////////////////////////////////////
   XmlElement^ elementToEncrypt = dynamic_cast<XmlElement^>(Doc->GetElementsByTagName( ElementToEncrypt )->Item( 0 ));

   // Throw an XmlException if the element was not found.
   if ( elementToEncrypt == nullptr )
   {
      throw gcnew XmlException( L"The specified element was not found" );
   }


   //////////////////////////////////////////////////
   // Create a new instance of the EncryptedXml class
   // and use it to encrypt the XmlElement with the
   // X.509 Certificate.
   //////////////////////////////////////////////////
   EncryptedXml^ eXml = gcnew EncryptedXml;

   // Encrypt the element.
   EncryptedData^ edElement = eXml->Encrypt( elementToEncrypt, Cert );

   ////////////////////////////////////////////////////
   // Replace the element from the original XmlDocument
   // object with the EncryptedData element.
   ////////////////////////////////////////////////////
   EncryptedXml::ReplaceElement( elementToEncrypt, edElement, false );
}

static void Decrypt( XmlDocument^ Doc )
{

   // Check the arguments.
   if ( Doc == nullptr )
      throw gcnew ArgumentNullException( L"Doc" );


   // Create a new EncryptedXml object.
   EncryptedXml^ exml = gcnew EncryptedXml( Doc );

   // Decrypt the XML document.
   exml->DecryptDocument();
}

int main()
{

   // Create an XmlDocument object.
   XmlDocument^ xmlDoc = gcnew XmlDocument;

   // Load an XML file into the XmlDocument object.
   try
   {
      xmlDoc->PreserveWhitespace = true;
      xmlDoc->Load( L"test.xml" );
   }
   catch ( Exception^ e )
   {
      Console::WriteLine( e->Message );
      return 0;
   }


   // Create a new X509Certificate2 object by loading
   // an X.509 certificate file.  To use XML encryption
   // with an X.509 certificate, use an X509Certificate2
   // object to encrypt, but use a certificate in a certificate
   // store to decrypt.
   // You can create a new test certificate file using the
   // makecert.exe tool.
   // Create an X509Certificate2 object for encryption.
   X509Certificate2^ cert = gcnew X509Certificate2( L"test.pfx" );

   // Put the certificate in certificate store for decryption.
   X509Store^ store = gcnew X509Store( StoreLocation::CurrentUser );
   store->Open( OpenFlags::ReadWrite );
   store->Add( cert );
   store->Close();
   try
   {

      // Encrypt the "creditcard" element.
      Encrypt( xmlDoc, L"creditcard", cert );

      // Display the encrypted XML to the console.
      Console::WriteLine( L"Encrypted XML:" );
      Console::WriteLine();
      Console::WriteLine( xmlDoc->OuterXml );

      // Decrypt the "creditcard" element.
      Decrypt( xmlDoc );

      // Display the encrypted XML to the console.
      Console::WriteLine();
      Console::WriteLine( L"Decrypted XML:" );
      Console::WriteLine();
      Console::WriteLine( xmlDoc->OuterXml );
   }
   catch ( Exception^ e )
   {
      Console::WriteLine( e->Message );
   }

   return 1;
}
using System;
using System.Xml;
using System.Security.Cryptography;
using System.Security.Cryptography.Xml;
using System.Security.Cryptography.X509Certificates;

class Program
{
    static void Main(string[] args)
    {

        // Create an XmlDocument object.
        XmlDocument xmlDoc = new XmlDocument();

        // Load an XML file into the XmlDocument object.
        try
        {
            xmlDoc.PreserveWhitespace = true;
            xmlDoc.Load("test.xml");
        }
        catch (Exception e)
        {
            Console.WriteLine(e.Message);
            return;
        }

        // Create a new X509Certificate2 object by loading
        // an X.509 certificate file.  To use XML encryption
        // with an X.509 certificate, use an X509Certificate2
        // object to encrypt, but use a certificate in a certificate
        // store to decrypt.

        // You can create a new test certificate file using the
        // makecert.exe tool.

        // Create an X509Certificate2 object for encryption.
        X509Certificate2 cert = new X509Certificate2("test.pfx");

        // Put the certificate in certificate store for decryption.
        X509Store store = new X509Store(StoreLocation.CurrentUser);

        store.Open(OpenFlags.ReadWrite);

        store.Add(cert);

        store.Close();

        try
        {
            // Encrypt the "creditcard" element.
            Encrypt(xmlDoc, "creditcard", cert);

            // Display the encrypted XML to the console.
            Console.WriteLine("Encrypted XML:");
            Console.WriteLine();
            Console.WriteLine(xmlDoc.OuterXml);

            // Decrypt the "creditcard" element.
            Decrypt(xmlDoc);

            // Display the encrypted XML to the console.
            Console.WriteLine();
            Console.WriteLine("Decrypted XML:");
            Console.WriteLine();
            Console.WriteLine(xmlDoc.OuterXml);
        }
        catch (Exception e)
        {
            Console.WriteLine(e.Message);
        }
    }

    public static void Encrypt(XmlDocument Doc, string ElementToEncrypt, X509Certificate2 Cert)
    {
        // Check the arguments.
        if (Doc == null)
            throw new ArgumentNullException("Doc");
        if (ElementToEncrypt == null)
            throw new ArgumentNullException("ElementToEncrypt");
        if (Cert == null)
            throw new ArgumentNullException("Cert");

        ////////////////////////////////////////////////
        // Find the specified element in the XmlDocument
        // object and create a new XmlElemnt object.
        ////////////////////////////////////////////////

        XmlElement elementToEncrypt = Doc.GetElementsByTagName(ElementToEncrypt)[0] as XmlElement;

        // Throw an XmlException if the element was not found.
        if (elementToEncrypt == null)
        {
            throw new XmlException("The specified element was not found");
        }

        //////////////////////////////////////////////////
        // Create a new instance of the EncryptedXml class
        // and use it to encrypt the XmlElement with the
        // X.509 Certificate.
        //////////////////////////////////////////////////

        EncryptedXml eXml = new EncryptedXml();

        // Encrypt the element.
        EncryptedData edElement = eXml.Encrypt(elementToEncrypt, Cert);

        ////////////////////////////////////////////////////
        // Replace the element from the original XmlDocument
        // object with the EncryptedData element.
        ////////////////////////////////////////////////////

        EncryptedXml.ReplaceElement(elementToEncrypt, edElement, false);
    }

    public static void Decrypt(XmlDocument Doc)
    {
        // Check the arguments.
        if (Doc == null)
            throw new ArgumentNullException("Doc");

        // Create a new EncryptedXml object.
        EncryptedXml exml = new EncryptedXml(Doc);

        // Decrypt the XML document.
        exml.DecryptDocument();
    }
}
Imports System.Xml
Imports System.Security.Cryptography
Imports System.Security.Cryptography.Xml
Imports System.Security.Cryptography.X509Certificates



Module Program

    Sub Main(ByVal args() As String)

        ' Create an XmlDocument object.
        Dim xmlDoc As New XmlDocument()

        ' Load an XML file into the XmlDocument object.
        Try
            xmlDoc.PreserveWhitespace = True
            xmlDoc.Load("test.xml")
        Catch e As Exception
            Console.WriteLine(e.Message)
            Return
        End Try

        ' Create a new X509Certificate2 object by loading
        ' an X.509 certificate file.  To use XML encryption 
        ' with an X.509 certificate, use an X509Certificate2 
        ' object to encrypt, but use a certificate in a certificate
        ' store to decrypt.
        ' You can create a new test certificate file using the 
        ' makecert.exe tool.
        ' Create an X509Certificate2 object for encryption.
        Dim cert As New X509Certificate2("test.pfx")

        ' Put the certificate in certificate store for decryption.  
        Dim store As New X509Store(StoreLocation.CurrentUser)

        store.Open(OpenFlags.ReadWrite)

        store.Add(cert)

        store.Close()


        Try
            ' Encrypt the "creditcard" element.
            Encrypt(xmlDoc, "creditcard", cert)

            ' Display the encrypted XML to the console.
            Console.WriteLine("Encrypted XML:")
            Console.WriteLine()
            Console.WriteLine(xmlDoc.OuterXml)

            ' Decrypt the "creditcard" element.
            Decrypt(xmlDoc)

            ' Display the encrypted XML to the console.
            Console.WriteLine()
            Console.WriteLine("Decrypted XML:")
            Console.WriteLine()
            Console.WriteLine(xmlDoc.OuterXml)
        Catch e As Exception
            Console.WriteLine(e.Message)
        End Try

    End Sub


    Sub Encrypt(ByVal Doc As XmlDocument, ByVal ElementToEncrypt As String, ByVal Cert As X509Certificate2)
        ' Check the arguments.  
        If Doc Is Nothing Then
            Throw New ArgumentNullException("Doc")
        End If
        If ElementToEncrypt Is Nothing Then
            Throw New ArgumentNullException("ElementToEncrypt")
        End If
        If Cert Is Nothing Then
            Throw New ArgumentNullException("Cert")
        End If
        '''''''''''''''''''''''''''''''''''''''''''''''''''
        ' Find the specified element in the XmlDocument
        ' object and create a new XmlElemnt object.
        '''''''''''''''''''''''''''''''''''''''''''''''''''
        Dim elementEncrypt As XmlElement = Doc.GetElementsByTagName(ElementToEncrypt)(0) 


        ' Throw an XmlException if the element was not found.
        If elementToEncrypt Is Nothing Then
            Throw New XmlException("The specified element was not found")
        End If

        '''''''''''''''''''''''''''''''''''''''''''''''''''
        ' Create a new instance of the EncryptedXml class 
        ' and use it to encrypt the XmlElement with the 
        ' X.509 Certificate.
        '''''''''''''''''''''''''''''''''''''''''''''''''''
        Dim eXml As New EncryptedXml()

        ' Encrypt the element.
        Dim edElement As EncryptedData = eXml.Encrypt(elementEncrypt, Cert)


        '''''''''''''''''''''''''''''''''''''''''''''''''''
        ' Replace the element from the original XmlDocument
        ' object with the EncryptedData element.
        '''''''''''''''''''''''''''''''''''''''''''''''''''
        EncryptedXml.ReplaceElement(elementEncrypt, edElement, False)

    End Sub


    Sub Decrypt(ByVal Doc As XmlDocument)
        ' Check the arguments.  
        If Doc Is Nothing Then
            Throw New ArgumentNullException("Doc")
        End If
        ' Create a new EncryptedXml object.
        Dim exml As New EncryptedXml(Doc)

        ' Decrypt the XML document.
        exml.DecryptDocument()

    End Sub
End Module

Encrypt(XmlElement, X509Certificate2)

Sumber:
EncryptedXml.cs
Sumber:
EncryptedXml.cs
Sumber:
EncryptedXml.cs
Sumber:
EncryptedXml.cs
Sumber:
EncryptedXml.cs

Mengenkripsi XML luar elemen menggunakan sertifikat X.509 yang ditentukan.

public:
 System::Security::Cryptography::Xml::EncryptedData ^ Encrypt(System::Xml::XmlElement ^ inputElement, System::Security::Cryptography::X509Certificates::X509Certificate2 ^ certificate);
public System.Security.Cryptography.Xml.EncryptedData Encrypt (System.Xml.XmlElement inputElement, System.Security.Cryptography.X509Certificates.X509Certificate2 certificate);
member this.Encrypt : System.Xml.XmlElement * System.Security.Cryptography.X509Certificates.X509Certificate2 -> System.Security.Cryptography.Xml.EncryptedData
Public Function Encrypt (inputElement As XmlElement, certificate As X509Certificate2) As EncryptedData

Parameter

inputElement
XmlElement

Elemen XML untuk dienkripsi.

certificate
X509Certificate2

Sertifikat X.509 yang digunakan untuk enkripsi.

Mengembalikan

Elemen EncryptedData yang mewakili data XML terenkripsi.

Pengecualian

Nilai inputElement parameter adalah null.

-atau-

Nilai certificate parameter adalah null.

Nilai certificate parameter tidak mewakili algoritma kunci RSA.

Contoh

Contoh kode berikut menunjukkan cara mengenkripsi dokumen XML menggunakan sertifikat X.509. Contoh ini membuat kunci sesi simetris untuk mengenkripsi dokumen lalu menggunakan sertifikat X.509 untuk menyematkan versi terenkripsi kunci sesi ke dalam dokumen XML.

#using <System.Security.dll>
#using <System.dll>
#using <System.Xml.dll>

using namespace System;
using namespace System::Xml;
using namespace System::Security::Cryptography;
using namespace System::Security::Cryptography::Xml;
using namespace System::Security::Cryptography::X509Certificates;
static void Encrypt( XmlDocument^ Doc, String^ ElementToEncrypt, X509Certificate2^ Cert )
{

   // Check the arguments.
   if ( Doc == nullptr )
      throw gcnew ArgumentNullException( L"Doc" );

   if ( ElementToEncrypt == nullptr )
      throw gcnew ArgumentNullException( L"ElementToEncrypt" );

   if ( Cert == nullptr )
      throw gcnew ArgumentNullException( L"Cert" );


   ////////////////////////////////////////////////
   // Find the specified element in the XmlDocument
   // object and create a new XmlElemnt object.
   ////////////////////////////////////////////////
   XmlElement^ elementToEncrypt = dynamic_cast<XmlElement^>(Doc->GetElementsByTagName( ElementToEncrypt )->Item( 0 ));

   // Throw an XmlException if the element was not found.
   if ( elementToEncrypt == nullptr )
   {
      throw gcnew XmlException( L"The specified element was not found" );
   }


   //////////////////////////////////////////////////
   // Create a new instance of the EncryptedXml class
   // and use it to encrypt the XmlElement with the
   // X.509 Certificate.
   //////////////////////////////////////////////////
   EncryptedXml^ eXml = gcnew EncryptedXml;

   // Encrypt the element.
   EncryptedData^ edElement = eXml->Encrypt( elementToEncrypt, Cert );

   ////////////////////////////////////////////////////
   // Replace the element from the original XmlDocument
   // object with the EncryptedData element.
   ////////////////////////////////////////////////////
   EncryptedXml::ReplaceElement( elementToEncrypt, edElement, false );
}

static void Decrypt( XmlDocument^ Doc )
{

   // Check the arguments.
   if ( Doc == nullptr )
      throw gcnew ArgumentNullException( L"Doc" );


   // Create a new EncryptedXml object.
   EncryptedXml^ exml = gcnew EncryptedXml( Doc );

   // Decrypt the XML document.
   exml->DecryptDocument();
}

int main()
{

   // Create an XmlDocument object.
   XmlDocument^ xmlDoc = gcnew XmlDocument;

   // Load an XML file into the XmlDocument object.
   try
   {
      xmlDoc->PreserveWhitespace = true;
      xmlDoc->Load( L"test.xml" );
   }
   catch ( Exception^ e )
   {
      Console::WriteLine( e->Message );
      return 0;
   }


   // Create a new X509Certificate2 object by loading
   // an X.509 certificate file.  To use XML encryption
   // with an X.509 certificate, use an X509Certificate2
   // object to encrypt, but use a certificate in a certificate
   // store to decrypt.
   // You can create a new test certificate file using the
   // makecert.exe tool.
   // Create an X509Certificate2 object for encryption.
   X509Certificate2^ cert = gcnew X509Certificate2( L"test.pfx" );

   // Put the certificate in certificate store for decryption.
   X509Store^ store = gcnew X509Store( StoreLocation::CurrentUser );
   store->Open( OpenFlags::ReadWrite );
   store->Add( cert );
   store->Close();
   try
   {

      // Encrypt the "creditcard" element.
      Encrypt( xmlDoc, L"creditcard", cert );

      // Display the encrypted XML to the console.
      Console::WriteLine( L"Encrypted XML:" );
      Console::WriteLine();
      Console::WriteLine( xmlDoc->OuterXml );

      // Decrypt the "creditcard" element.
      Decrypt( xmlDoc );

      // Display the encrypted XML to the console.
      Console::WriteLine();
      Console::WriteLine( L"Decrypted XML:" );
      Console::WriteLine();
      Console::WriteLine( xmlDoc->OuterXml );
   }
   catch ( Exception^ e )
   {
      Console::WriteLine( e->Message );
   }

   return 1;
}
using System;
using System.Xml;
using System.Security.Cryptography;
using System.Security.Cryptography.Xml;
using System.Security.Cryptography.X509Certificates;

class Program
{
    static void Main(string[] args)
    {

        // Create an XmlDocument object.
        XmlDocument xmlDoc = new XmlDocument();

        // Load an XML file into the XmlDocument object.
        try
        {
            xmlDoc.PreserveWhitespace = true;
            xmlDoc.Load("test.xml");
        }
        catch (Exception e)
        {
            Console.WriteLine(e.Message);
            return;
        }

        // Create a new X509Certificate2 object by loading
        // an X.509 certificate file.  To use XML encryption
        // with an X.509 certificate, use an X509Certificate2
        // object to encrypt, but use a certificate in a certificate
        // store to decrypt.

        // You can create a new test certificate file using the
        // makecert.exe tool.

        // Create an X509Certificate2 object for encryption.
        X509Certificate2 cert = new X509Certificate2("test.pfx");

        // Put the certificate in certificate store for decryption.
        X509Store store = new X509Store(StoreLocation.CurrentUser);

        store.Open(OpenFlags.ReadWrite);

        store.Add(cert);

        store.Close();

        try
        {
            // Encrypt the "creditcard" element.
            Encrypt(xmlDoc, "creditcard", cert);

            // Display the encrypted XML to the console.
            Console.WriteLine("Encrypted XML:");
            Console.WriteLine();
            Console.WriteLine(xmlDoc.OuterXml);

            // Decrypt the "creditcard" element.
            Decrypt(xmlDoc);

            // Display the encrypted XML to the console.
            Console.WriteLine();
            Console.WriteLine("Decrypted XML:");
            Console.WriteLine();
            Console.WriteLine(xmlDoc.OuterXml);
        }
        catch (Exception e)
        {
            Console.WriteLine(e.Message);
        }
    }

    public static void Encrypt(XmlDocument Doc, string ElementToEncrypt, X509Certificate2 Cert)
    {
        // Check the arguments.
        if (Doc == null)
            throw new ArgumentNullException("Doc");
        if (ElementToEncrypt == null)
            throw new ArgumentNullException("ElementToEncrypt");
        if (Cert == null)
            throw new ArgumentNullException("Cert");

        ////////////////////////////////////////////////
        // Find the specified element in the XmlDocument
        // object and create a new XmlElemnt object.
        ////////////////////////////////////////////////

        XmlElement elementToEncrypt = Doc.GetElementsByTagName(ElementToEncrypt)[0] as XmlElement;

        // Throw an XmlException if the element was not found.
        if (elementToEncrypt == null)
        {
            throw new XmlException("The specified element was not found");
        }

        //////////////////////////////////////////////////
        // Create a new instance of the EncryptedXml class
        // and use it to encrypt the XmlElement with the
        // X.509 Certificate.
        //////////////////////////////////////////////////

        EncryptedXml eXml = new EncryptedXml();

        // Encrypt the element.
        EncryptedData edElement = eXml.Encrypt(elementToEncrypt, Cert);

        ////////////////////////////////////////////////////
        // Replace the element from the original XmlDocument
        // object with the EncryptedData element.
        ////////////////////////////////////////////////////

        EncryptedXml.ReplaceElement(elementToEncrypt, edElement, false);
    }

    public static void Decrypt(XmlDocument Doc)
    {
        // Check the arguments.
        if (Doc == null)
            throw new ArgumentNullException("Doc");

        // Create a new EncryptedXml object.
        EncryptedXml exml = new EncryptedXml(Doc);

        // Decrypt the XML document.
        exml.DecryptDocument();
    }
}
Imports System.Xml
Imports System.Security.Cryptography
Imports System.Security.Cryptography.Xml
Imports System.Security.Cryptography.X509Certificates



Module Program

    Sub Main(ByVal args() As String)

        ' Create an XmlDocument object.
        Dim xmlDoc As New XmlDocument()

        ' Load an XML file into the XmlDocument object.
        Try
            xmlDoc.PreserveWhitespace = True
            xmlDoc.Load("test.xml")
        Catch e As Exception
            Console.WriteLine(e.Message)
            Return
        End Try

        ' Create a new X509Certificate2 object by loading
        ' an X.509 certificate file.  To use XML encryption 
        ' with an X.509 certificate, use an X509Certificate2 
        ' object to encrypt, but use a certificate in a certificate
        ' store to decrypt.
        ' You can create a new test certificate file using the 
        ' makecert.exe tool.
        ' Create an X509Certificate2 object for encryption.
        Dim cert As New X509Certificate2("test.pfx")

        ' Put the certificate in certificate store for decryption.  
        Dim store As New X509Store(StoreLocation.CurrentUser)

        store.Open(OpenFlags.ReadWrite)

        store.Add(cert)

        store.Close()


        Try
            ' Encrypt the "creditcard" element.
            Encrypt(xmlDoc, "creditcard", cert)

            ' Display the encrypted XML to the console.
            Console.WriteLine("Encrypted XML:")
            Console.WriteLine()
            Console.WriteLine(xmlDoc.OuterXml)

            ' Decrypt the "creditcard" element.
            Decrypt(xmlDoc)

            ' Display the encrypted XML to the console.
            Console.WriteLine()
            Console.WriteLine("Decrypted XML:")
            Console.WriteLine()
            Console.WriteLine(xmlDoc.OuterXml)
        Catch e As Exception
            Console.WriteLine(e.Message)
        End Try

    End Sub


    Sub Encrypt(ByVal Doc As XmlDocument, ByVal ElementToEncrypt As String, ByVal Cert As X509Certificate2)
        ' Check the arguments.  
        If Doc Is Nothing Then
            Throw New ArgumentNullException("Doc")
        End If
        If ElementToEncrypt Is Nothing Then
            Throw New ArgumentNullException("ElementToEncrypt")
        End If
        If Cert Is Nothing Then
            Throw New ArgumentNullException("Cert")
        End If
        '''''''''''''''''''''''''''''''''''''''''''''''''''
        ' Find the specified element in the XmlDocument
        ' object and create a new XmlElemnt object.
        '''''''''''''''''''''''''''''''''''''''''''''''''''
        Dim elementEncrypt As XmlElement = Doc.GetElementsByTagName(ElementToEncrypt)(0) 


        ' Throw an XmlException if the element was not found.
        If elementToEncrypt Is Nothing Then
            Throw New XmlException("The specified element was not found")
        End If

        '''''''''''''''''''''''''''''''''''''''''''''''''''
        ' Create a new instance of the EncryptedXml class 
        ' and use it to encrypt the XmlElement with the 
        ' X.509 Certificate.
        '''''''''''''''''''''''''''''''''''''''''''''''''''
        Dim eXml As New EncryptedXml()

        ' Encrypt the element.
        Dim edElement As EncryptedData = eXml.Encrypt(elementEncrypt, Cert)


        '''''''''''''''''''''''''''''''''''''''''''''''''''
        ' Replace the element from the original XmlDocument
        ' object with the EncryptedData element.
        '''''''''''''''''''''''''''''''''''''''''''''''''''
        EncryptedXml.ReplaceElement(elementEncrypt, edElement, False)

    End Sub


    Sub Decrypt(ByVal Doc As XmlDocument)
        ' Check the arguments.  
        If Doc Is Nothing Then
            Throw New ArgumentNullException("Doc")
        End If
        ' Create a new EncryptedXml object.
        Dim exml As New EncryptedXml(Doc)

        ' Decrypt the XML document.
        exml.DecryptDocument()

    End Sub
End Module

Keterangan

Metode Encrypt ini adalah cara mudah untuk mengenkripsi XML luar elemen menggunakan sertifikat. Metode ini menghasilkan kunci sesi Standar Enkripsi Lanjutan (AES) 256-bit untuk mengenkripsi elemen XML lalu mengenkripsi dan menandatangani kunci AES menggunakan X509Certificate2 objek . Metode ini Encrypt kemudian mengembalikan XML yang dihasilkan sebagai EncryptedData elemen.

Jika Anda memerlukan kontrol lebih besar atas enkripsi, sehingga Anda dapat menempatkan informasi terenkripsi ke dalam <CipherReference> elemen atau menentukan apakah seluruh elemen XML atau hanya kontennya yang harus dienkripsi, gunakan EncryptData metode kelebihan beban.

Untuk menggunakan Enkripsi XML dengan sertifikat X.509, Anda harus menginstal Penyedia Kriptografi Yang Ditingkatkan Microsoft dan sertifikat X.509 harus menggunakan Penyedia yang Ditingkatkan. Jika Anda tidak menginstal Penyedia Kriptografi Yang Ditingkatkan Microsoft atau sertifikat X.509 tidak menggunakan Penyedia yang Ditingkatkan, CryptographicException dengan "Kesalahan Tidak Diketahui" akan dilemparkan saat Anda mendekripsi dokumen XML.

Berlaku untuk

Encrypt(XmlElement, String)

Sumber:
EncryptedXml.cs
Sumber:
EncryptedXml.cs
Sumber:
EncryptedXml.cs
Sumber:
EncryptedXml.cs
Sumber:
EncryptedXml.cs

Mengenkripsi XML luar elemen menggunakan kunci yang ditentukan dalam tabel pemetaan kunci.

public:
 System::Security::Cryptography::Xml::EncryptedData ^ Encrypt(System::Xml::XmlElement ^ inputElement, System::String ^ keyName);
public System.Security.Cryptography.Xml.EncryptedData Encrypt (System.Xml.XmlElement inputElement, string keyName);
member this.Encrypt : System.Xml.XmlElement * string -> System.Security.Cryptography.Xml.EncryptedData
Public Function Encrypt (inputElement As XmlElement, keyName As String) As EncryptedData

Parameter

inputElement
XmlElement

Elemen XML untuk dienkripsi.

keyName
String

Nama kunci yang dapat ditemukan di tabel pemetaan kunci.

Mengembalikan

Objek EncryptedData yang mewakili data XML terenkripsi.

Pengecualian

Nilai inputElement parameter adalah null.

-atau-

Nilai keyName parameter adalah null.

Nilai keyName parameter tidak cocok dengan pasangan nama kunci terdaftar.

-atau-

Kunci kriptografi yang keyName dijelaskan oleh parameter tidak didukung.

Contoh

Contoh kode berikut menunjukkan cara mengenkripsi dokumen XML menggunakan kunci konten.

#using <System.Security.dll>
#using <System.dll>
#using <System.Xml.dll>

using namespace System;
using namespace System::Xml;
using namespace System::Security::Cryptography;
using namespace System::Security::Cryptography::Xml;
static void Encrypt( XmlDocument^ Doc, String^ ElementToEncrypt, SymmetricAlgorithm^ Alg, String^ KeyName )
{
   
   // Check the arguments.  
   if ( Doc == nullptr )
      throw gcnew ArgumentNullException( L"Doc" );

   if ( ElementToEncrypt == nullptr )
      throw gcnew ArgumentNullException( L"ElementToEncrypt" );

   if ( Alg == nullptr )
      throw gcnew ArgumentNullException( L"Alg" );

   
   ////////////////////////////////////////////////
   // Find the specified element in the XmlDocument
   // object and create a new XmlElemnt object.
   ////////////////////////////////////////////////
   XmlElement^ elementToEncrypt = dynamic_cast<XmlElement^>(Doc->GetElementsByTagName( ElementToEncrypt )->Item( 0 ));
   
   // Throw an XmlException if the element was not found.
   if ( elementToEncrypt == nullptr )
   {
      throw gcnew XmlException( L"The specified element was not found" );
   }

   
   //////////////////////////////////////////////////
   // Create a new instance of the EncryptedXml class 
   // and use it to encrypt the XmlElement with the 
   // symmetric key.
   //////////////////////////////////////////////////
   EncryptedXml^ eXml = gcnew EncryptedXml;
   
   // Add the key mapping.
   eXml->AddKeyNameMapping( KeyName, Alg );
   
   // Encrypt the element.
   EncryptedData^ edElement = eXml->Encrypt( elementToEncrypt, KeyName );
   
   ////////////////////////////////////////////////////
   // Replace the element from the original XmlDocument
   // object with the EncryptedData element.
   ////////////////////////////////////////////////////
   EncryptedXml::ReplaceElement( elementToEncrypt, edElement, false );
}

static void Decrypt( XmlDocument^ Doc, SymmetricAlgorithm^ Alg, String^ KeyName )
{
   
   // Check the arguments.  
   if ( Doc == nullptr )
      throw gcnew ArgumentNullException( L"Doc" );

   if ( Alg == nullptr )
      throw gcnew ArgumentNullException( L"Alg" );

   if ( KeyName == nullptr )
      throw gcnew ArgumentNullException( L"KeyName" );

   
   // Create a new EncryptedXml object.
   EncryptedXml^ exml = gcnew EncryptedXml( Doc );
   
   // Add the key name mapping.
   exml->AddKeyNameMapping( KeyName, Alg );
   
   // Decrypt the XML document.
   exml->DecryptDocument();
}

int main()
{
   
   // Create an XmlDocument object.
   XmlDocument^ xmlDoc = gcnew XmlDocument;
   
   // Load an XML file into the XmlDocument object.
   try
   {
      xmlDoc->PreserveWhitespace = true;
      xmlDoc->Load( L"test.xml" );
   }
   catch ( Exception^ e ) 
   {
      Console::WriteLine( e->Message );
   }

   
   // Create a new TripleDES key. 
   TripleDESCryptoServiceProvider^ tDESkey = gcnew TripleDESCryptoServiceProvider;
   try
   {
      
      // Encrypt the "creditcard" element.
      Encrypt( xmlDoc, L"creditcard", tDESkey, L"tDesKey" );
      
      // Display the encrypted XML to the console.
      Console::WriteLine( L"Encrypted XML:" );
      Console::WriteLine();
      Console::WriteLine( xmlDoc->OuterXml );
      
      // Decrypt the "creditcard" element.
      Decrypt( xmlDoc, tDESkey, L"tDesKey" );
      
      // Display the encrypted XML to the console.
      Console::WriteLine();
      Console::WriteLine( L"Decrypted XML:" );
      Console::WriteLine();
      Console::WriteLine( xmlDoc->OuterXml );
   }
   catch ( Exception^ e ) 
   {
      Console::WriteLine( e->Message );
   }
   finally
   {
      
      // Clear the TripleDES key.
      tDESkey->Clear();
   }

}
using System;
using System.Xml;
using System.Security.Cryptography;
using System.Security.Cryptography.Xml;

class Program
{
    static void Main(string[] args)
    {

        // Create an XmlDocument object.
        XmlDocument xmlDoc = new XmlDocument();

        // Load an XML file into the XmlDocument object.
        try
        {
            xmlDoc.PreserveWhitespace = true;
            xmlDoc.Load("test.xml");
        }
        catch (Exception e)
        {
            Console.WriteLine(e.Message);
        }

        // Create a new TripleDES key.
        TripleDESCryptoServiceProvider tDESkey = new TripleDESCryptoServiceProvider();

        try
        {
            // Encrypt the "creditcard" element.
            Encrypt(xmlDoc, "creditcard", tDESkey, "tDesKey");

            // Display the encrypted XML to the console.
            Console.WriteLine("Encrypted XML:");
            Console.WriteLine();
            Console.WriteLine(xmlDoc.OuterXml);

            // Decrypt the "creditcard" element.
            Decrypt(xmlDoc, tDESkey, "tDesKey");

            // Display the encrypted XML to the console.
            Console.WriteLine();
            Console.WriteLine("Decrypted XML:");
            Console.WriteLine();
            Console.WriteLine(xmlDoc.OuterXml);
        }
        catch (Exception e)
        {
            Console.WriteLine(e.Message);
        }
        finally
        {
            // Clear the TripleDES key.
            tDESkey.Clear();
        }
    }

    public static void Encrypt(XmlDocument Doc, string ElementToEncrypt, SymmetricAlgorithm Alg, string KeyName)
    {
        // Check the arguments.
        if (Doc == null)
            throw new ArgumentNullException("Doc");
        if (ElementToEncrypt == null)
            throw new ArgumentNullException("ElementToEncrypt");
        if (Alg == null)
            throw new ArgumentNullException("Alg");

        ////////////////////////////////////////////////
        // Find the specified element in the XmlDocument
        // object and create a new XmlElemnt object.
        ////////////////////////////////////////////////

        XmlElement elementToEncrypt = Doc.GetElementsByTagName(ElementToEncrypt)[0] as XmlElement;

        // Throw an XmlException if the element was not found.
        if (elementToEncrypt == null)
        {
            throw new XmlException("The specified element was not found");
        }

        //////////////////////////////////////////////////
        // Create a new instance of the EncryptedXml class
        // and use it to encrypt the XmlElement with the
        // symmetric key.
        //////////////////////////////////////////////////

        EncryptedXml eXml = new EncryptedXml();

        // Add the key mapping.
        eXml.AddKeyNameMapping(KeyName, Alg);

        // Encrypt the element.
        EncryptedData edElement = eXml.Encrypt(elementToEncrypt, KeyName);

        ////////////////////////////////////////////////////
        // Replace the element from the original XmlDocument
        // object with the EncryptedData element.
        ////////////////////////////////////////////////////

        EncryptedXml.ReplaceElement(elementToEncrypt, edElement, false);
    }

    public static void Decrypt(XmlDocument Doc, SymmetricAlgorithm Alg, string KeyName)
    {
        // Check the arguments.
        if (Doc == null)
            throw new ArgumentNullException("Doc");
        if (Alg == null)
            throw new ArgumentNullException("Alg");
        if (KeyName == null)
            throw new ArgumentNullException("KeyName");

        // Create a new EncryptedXml object.
        EncryptedXml exml = new EncryptedXml(Doc);

        // Add the key name mapping.
        exml.AddKeyNameMapping(KeyName, Alg);

        // Decrypt the XML document.
        exml.DecryptDocument();
    }
}
Imports System.Xml
Imports System.Security.Cryptography
Imports System.Security.Cryptography.Xml



Module Program

    Sub Main(ByVal args() As String)

        ' Create an XmlDocument object.
        Dim xmlDoc As New XmlDocument()

        ' Load an XML file into the XmlDocument object.
        Try
            xmlDoc.PreserveWhitespace = True
            xmlDoc.Load("test.xml")
        Catch e As Exception
            Console.WriteLine(e.Message)
        End Try

        ' Create a new TripleDES key. 
        Dim tDESkey As New TripleDESCryptoServiceProvider()


        Try
            ' Encrypt the "creditcard" element.
            Encrypt(xmlDoc, "creditcard", tDESkey, "tDesKey")

            ' Display the encrypted XML to the console.
            Console.WriteLine("Encrypted XML:")
            Console.WriteLine()
            Console.WriteLine(xmlDoc.OuterXml)

            ' Decrypt the "creditcard" element.
            Decrypt(xmlDoc, tDESkey, "tDesKey")

            ' Display the encrypted XML to the console.
            Console.WriteLine()
            Console.WriteLine("Decrypted XML:")
            Console.WriteLine()
            Console.WriteLine(xmlDoc.OuterXml)
        Catch e As Exception
            Console.WriteLine(e.Message)
        Finally
            ' Clear the TripleDES key.
            tDESkey.Clear()
        End Try

    End Sub


    Sub Encrypt(ByVal Doc As XmlDocument, ByVal ElementToEncrypt As String, ByVal Alg As SymmetricAlgorithm, ByVal KeyName As String)
        ' Check the arguments.  
        If Doc Is Nothing Then
            Throw New ArgumentNullException("Doc")
        End If
        If ElementToEncrypt Is Nothing Then
            Throw New ArgumentNullException("ElementToEncrypt")
        End If
        If Alg Is Nothing Then
            Throw New ArgumentNullException("Alg")
        End If
        '''''''''''''''''''''''''''''''''''''''''''''''''''
        ' Find the specified element in the XmlDocument
        ' object and create a new XmlElemnt object.
        '''''''''''''''''''''''''''''''''''''''''''''''''''
        Dim elementEncrypt As XmlElement = Doc.GetElementsByTagName(ElementToEncrypt)(0) 


        ' Throw an XmlException if the element was not found.
        If ElementToEncrypt Is Nothing Then
            Throw New XmlException("The specified element was not found")
        End If

        '''''''''''''''''''''''''''''''''''''''''''''''''''
        ' Create a new instance of the EncryptedXml class 
        ' and use it to encrypt the XmlElement with the 
        ' symmetric key.
        '''''''''''''''''''''''''''''''''''''''''''''''''''
        Dim eXml As New EncryptedXml()

        ' Add the key mapping.
        eXml.AddKeyNameMapping(KeyName, Alg)

        ' Encrypt the element.
        Dim edElement As EncryptedData = eXml.Encrypt(elementEncrypt, KeyName)


        '''''''''''''''''''''''''''''''''''''''''''''''''''
        ' Replace the element from the original XmlDocument
        ' object with the EncryptedData element.
        '''''''''''''''''''''''''''''''''''''''''''''''''''
        EncryptedXml.ReplaceElement(elementEncrypt, edElement, False)

    End Sub


    Sub Decrypt(ByVal Doc As XmlDocument, ByVal Alg As SymmetricAlgorithm, ByVal KeyName As String)
        ' Check the arguments.  
        If Doc Is Nothing Then
            Throw New ArgumentNullException("Doc")
        End If
        If Alg Is Nothing Then
            Throw New ArgumentNullException("Alg")
        End If
        If KeyName Is Nothing Then
            Throw New ArgumentNullException("KeyName")
        End If
        ' Create a new EncryptedXml object.
        Dim exml As New EncryptedXml(Doc)

        ' Add the key name mapping.
        exml.AddKeyNameMapping(KeyName, Alg)

        ' Decrypt the XML document.
        exml.DecryptDocument()

    End Sub
End Module

Keterangan

Metode ini adalah cara mudah untuk mengenkripsi XML luar elemen menggunakan nama kunci. Jika Anda memerlukan kontrol lebih besar atas enkripsi, sehingga Anda dapat menempatkan informasi terenkripsi ke dalam <CipherReference> elemen atau menentukan apakah seluruh elemen XML atau hanya kontennya yang harus dienkripsi, gunakan EncryptData metode kelebihan beban.

Untuk daftar semua algoritma yang didukung, lihat daftar bidang konstanta yang terkait dengan EncryptedXml kelas .

Berlaku untuk