CipherData Kelas

Definisi

Ruang nama:

System.Security.Cryptography.Xml

Rakitan:

System.Security.Cryptography.Xml.dll

<CipherData> Mewakili elemen dalam enkripsi XML. Kelas ini tidak dapat diwariskan.

public ref class CipherData sealed

public sealed class CipherData

type CipherData = class

Public NotInheritable Class CipherData

Warisan

Object

CipherData

Contoh

Contoh kode berikut menggunakan EncryptedData kelas untuk membuat <EncryptedData> elemen yang berisi <CipherData> elemen, lalu menulis XML ke file XML.

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

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

/// This sample used the EncryptedData class to create a EncryptedData element
/// and write it to an XML file.
int main()
{
    // Create a new CipherData object.
    CipherData^ cipher = gcnew CipherData();
    // Assign a byte array to be the CipherValue. This is a
    // byte array representing encrypted data.
    cipher->CipherValue = gcnew array<Byte>(8);
    // Create a new EncryptedData object.
    EncryptedData^ encryptionRoot = gcnew EncryptedData();
    //Add an encryption method to the object.
    encryptionRoot->Id = "ED";
    encryptionRoot->EncryptionMethod = gcnew EncryptionMethod(
        "http://www.w3.org/2001/04/xmlenc#aes128-cbc");
    encryptionRoot->CipherData = cipher;

    //Add key information to the object.
    KeyInfo^ keyDetails = gcnew KeyInfo();
    keyDetails->AddClause(gcnew KeyInfoRetrievalMethod("#EK",
        "http://www.w3.org/2001/04/xmlenc#EncryptedKey"));
    encryptionRoot->KeyInfo = keyDetails;

    // Create new XML document and put encrypted data into it.
    XmlDocument^ doc = gcnew XmlDocument();
    XmlElement^ encryptionPropertyElement =
        doc->CreateElement("EncryptionProperty", 
        EncryptedXml::XmlEncNamespaceUrl);
    EncryptionProperty^ property = gcnew EncryptionProperty(
        encryptionPropertyElement);
    encryptionRoot->AddProperty(property);

    // Output the resulting XML information into a file.
    String^ path = "test.xml";
    try
    {
        File::WriteAllText(path, encryptionRoot->GetXml()->OuterXml);
    }
    catch (IOException^ ex)
    {
        Console::WriteLine("There was an error writing to {0}", path);
        Console::WriteLine(ex->Message);
    }
    //Console.WriteLine(ed.GetXml().OuterXml);
}

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

/// This sample used the EncryptedData class to create a EncryptedData element
/// and write it to an XML file.
namespace EncryptedDataSample
{
    class Sample1
    {
        [STAThread]
        static void Main(string[] args)
        {
            // Create a new CipherData object.
            CipherData cd = new CipherData();
            // Assign a byte array to be the CipherValue. This is a byte array representing encrypted data.
            cd.CipherValue = new byte[8];
            // 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.
            string path = @"c:\test\MyTest.xml";
            File.WriteAllText(path,ed.GetXml().OuterXml);
            //Console.WriteLine(ed.GetXml().OuterXml);
        }
    }
}

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.
Module EncryptedDataSample1

    Sub Main()
        ' Create a new CipherData object.
        Dim cd As New CipherData
        ' Assign a byte array to the CipherValue.
        cd.CipherValue = New Byte(7) {}
        ' 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 Sub

End Module

Keterangan

Kelas CipherData mewakili <CipherData> elemen dalam enkripsi XML. Ini adalah elemen yang diperlukan yang menyediakan data terenkripsi. Ini harus berisi data terenkripsi sebagai teks <CipherValue> elemen yang dikodekan base64, atau memberikan referensi ke lokasi eksternal yang berisi data terenkripsi menggunakan <CipherReference> elemen .

Dalam banyak kasus, Anda tidak perlu langsung membuat instans CipherData baru kelas. Kelas EncryptedXml, EncryptedData, dan EncryptedKey membuat instans untuk Anda.

Catatan

Objek CipherData dapat memiliki CipherReference properti atau CipherValue properti, tetapi tidak keduanya. CryptographicException akan dilemparkan jika keduanya ditetapkan ke CipherData objek .

Konstruktor

CipherData()	Menginisialisasi instans baru kelas CipherData.
CipherData(Byte[])	Menginisialisasi instans CipherData baru kelas menggunakan array byte sebagai CipherValue nilai.
CipherData(CipherReference)	Menginisialisasi instans CipherData baru kelas menggunakan CipherReference objek .

Properti

CipherReference	Mendapatkan atau mengatur <CipherReference> elemen .
CipherValue	Mendapatkan atau mengatur <CipherValue> elemen .

Metode

Equals(Object)	Menentukan apakah objek yang ditentukan sama dengan objek saat ini. (Diperoleh dari Object)
GetHashCode()	Berfungsi sebagai fungsi hash default. (Diperoleh dari Object)
GetType()	Mendapatkan dari instans Type saat ini. (Diperoleh dari Object)
GetXml()	Mendapatkan nilai XML untuk CipherData objek .
LoadXml(XmlElement)	Memuat data XML dari XmlElement ke dalam CipherData objek.
MemberwiseClone()	Membuat salinan dangkal dari saat ini Object. (Diperoleh dari Object)
ToString()	Mengembalikan string yang mewakili objek saat ini. (Diperoleh dari Object)