CipherData.CipherReference Propiedad

Referencia

Definición

Espacio de nombres:: System.Security.Cryptography.Xml

Ensamblado:: System.Security.Cryptography.Xml.dll

Ensamblado:: System.Security.dll

Importante

Parte de la información hace referencia a la versión preliminar del producto, que puede haberse modificado sustancialmente antes de lanzar la versión definitiva. Microsoft no otorga ninguna garantía, explícita o implícita, con respecto a la información proporcionada aquí.

Obtiene o establece el elemento <CipherReference>.

public:
 property System::Security::Cryptography::Xml::CipherReference ^ CipherReference { System::Security::Cryptography::Xml::CipherReference ^ get(); void set(System::Security::Cryptography::Xml::CipherReference ^ value); };

public System.Security.Cryptography.Xml.CipherReference CipherReference { get; set; }

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

Public Property CipherReference As CipherReference

Valor de propiedad

CipherReference

Un objeto CipherReference.

Excepciones

ArgumentNullException

La propiedad CipherReference se estableció en null.

CryptographicException

La propiedad CipherReference se ha establecido más de una vez.

Ejemplos

En el ejemplo de código siguiente se muestra cómo crear una nueva instancia de la CipherData clase mediante CipherReference información.

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

using namespace System;
using namespace System::Security::Cryptography::Xml;
using namespace System::Xml;
using namespace System::IO;

/// This sample used the EncryptedData class to create an encrypted data element
/// and write it to an XML file. It demonstrates the use of CipherReference.

[STAThread]
int main()
{
   
   //Create a URI string.
   String^ uri = "http://www.woodgrovebank.com/document.xml";
   
   // Create a Base64 transform. The input content retrieved from the
   // URI should be Base64-decoded before other processing.
   Transform^ base64 = gcnew XmlDsigBase64Transform;
   
   //Create a transform chain and add the transform to it.
   TransformChain^ tc = gcnew TransformChain;
   tc->Add( base64 );
   
   //Create <CipherReference> information.
   CipherReference ^ reference = gcnew CipherReference( uri,tc );
   
   // Create a new CipherData object using the CipherReference information.
   // Note that you cannot assign both a CipherReference and a CipherValue
   // to a CipherData object.
   CipherData ^ cd = gcnew CipherData( reference );
   
   // Create a new EncryptedData object.
   EncryptedData^ ed = gcnew EncryptedData;
   
   //Add an encryption method to the object.
   ed->Id = "ED";
   ed->EncryptionMethod = gcnew EncryptionMethod( "http://www.w3.org/2001/04/xmlenc#aes128-cbc" );
   ed->CipherData = cd;
   
   //Add key information to the object.
   KeyInfo^ ki = gcnew KeyInfo;
   ki->AddClause( gcnew KeyInfoRetrievalMethod( "#EK","http://www.w3.org/2001/04/xmlenc#EncryptedKey" ) );
   ed->KeyInfo = ki;
   
   // Create new XML document and put encrypted data into it.
   XmlDocument^ doc = gcnew XmlDocument;
   XmlElement^ encryptionPropertyElement = dynamic_cast<XmlElement^>(doc->CreateElement( "EncryptionProperty", EncryptedXml::XmlEncNamespaceUrl ));
   EncryptionProperty ^ ep = gcnew EncryptionProperty( encryptionPropertyElement );
   ed->AddProperty( ep );
   
   // Output the resulting XML information into a file.
   try
   {
      String^ path = "c:\\test\\MyTest.xml";
      File::WriteAllText( path, ed->GetXml()->OuterXml );
   }
   catch ( IOException^ e ) 
   {
      Console::WriteLine( "File IO error. {0}", e );
   }

}

using System;
using System.Security.Cryptography.Xml;
using System.Xml;
using System.IO;

/// This sample used the EncryptedData class to create an encrypted data element
/// and write it to an XML file. It demonstrates the use of CipherReference.
namespace EncryptedDataSample
{
    class Example
    {
        [STAThread]
        static void Main(string[] args)
        {
            //Create a URI string.
            String uri = "http://www.woodgrovebank.com/document.xml";
            // Create a Base64 transform. The input content retrieved from the
            // URI should be Base64-decoded before other processing.
            Transform base64 = new XmlDsigBase64Transform();
            //Create a transform chain and add the transform to it.
            TransformChain tc = new TransformChain();
            tc.Add(base64);
            //Create <CipherReference> information.
            CipherReference reference = new CipherReference(uri, tc);

            // Create a new CipherData object using the CipherReference information.
            // Note that you cannot assign both a CipherReference and a CipherValue
            // to a CipherData object.
            CipherData cd = new CipherData(reference);

            // Create a new EncryptedData object.
            EncryptedData ed = new EncryptedData();

            //Add an encryption method to the object.
            ed.Id = "ED";
            ed.EncryptionMethod = new EncryptionMethod("http://www.w3.org/2001/04/xmlenc#aes128-cbc");
            ed.CipherData = cd;

            //Add key information to the object.
            KeyInfo ki = new KeyInfo();
            ki.AddClause(new KeyInfoRetrievalMethod("#EK", "http://www.w3.org/2001/04/xmlenc#EncryptedKey"));
            ed.KeyInfo = ki;

            // Create new XML document and put encrypted data into it.
            XmlDocument doc = new XmlDocument();
            XmlElement encryptionPropertyElement = (XmlElement)doc.CreateElement("EncryptionProperty", EncryptedXml.XmlEncNamespaceUrl);
            EncryptionProperty ep = new EncryptionProperty(encryptionPropertyElement);
            ed.AddProperty(ep);

            // Output the resulting XML information into a file.
            try
            {
                string path = @"c:\test\MyTest.xml";

                File.WriteAllText(path, ed.GetXml().OuterXml);
            }
            catch (IOException e)
            {
                Console.WriteLine("File IO error. {0}", e);
            }
        }
    }
}

Imports System.Security.Cryptography.Xml
Imports System.Xml
Imports System.IO


'/ This sample used the EncryptedData class to create a EncryptedData element
'/ and write it to an XML file. It demonstrates the use of CipherReference.
Module Module1

    Sub Main()
        ' Create a URI string.
        Dim uri As String = "http://www.woodgrovebank.com/document.xml"
        ' Create a Base64 transform. The input content retrieved from the
        ' URI should be Base64-decoded before other processing.
        Dim base64 As Transform = New XmlDsigBase64Transform
        Dim tc As New TransformChain
        tc.Add(base64)
        ' Create <CipherReference> information.
        Dim reference As CipherReference = New CipherReference(uri, tc)

        ' Create a new CipherData object.
        ' Note that you cannot assign both a CipherReference and a CipherValue
        ' to a CipherData object.
        Dim cd As CipherData = New CipherData(Reference)

        ' Create a new EncryptedData object.
        Dim ed As New EncryptedData

        'Add an encryption method to the object.
        ed.Id = "ED"
        ed.EncryptionMethod = New EncryptionMethod("http://www.w3.org/2001/04/xmlenc#aes128-cbc")
        ed.CipherData = cd

        'Add key information to the object.
        Dim ki As New KeyInfo
        ki.AddClause(New KeyInfoRetrievalMethod("#EK", "http://www.w3.org/2001/04/xmlenc#EncryptedKey"))
        ed.KeyInfo = ki

        ' Create new XML document and put encrypted data into it.
        Dim doc As New XmlDocument
        Dim encryptionPropertyElement As XmlElement = CType(doc.CreateElement("EncryptionProperty", EncryptedXml.XmlEncNamespaceUrl), XmlElement)
        Dim ep As New EncryptionProperty(encryptionPropertyElement)
        ed.AddProperty(ep)

        ' Output the resulting XML information into a file.
        Dim path As String = "c:\test\MyTest.xml"
        File.WriteAllText(path, ed.GetXml().OuterXml)
    End Sub

End Module

Comentarios

El <CipherReference> elemento identifica un origen que, cuando se procesa, produce los datos cifrados. Para obtener más información sobre este elemento, vea CipherReference.

Nota

Un CipherData objeto puede tener una CipherReference propiedad o una CipherValue propiedad, pero no ambas. Se produce una CryptographicException excepción si ambos se asignan a un CipherData objeto .

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