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CipherData 類別

定義

表示 XML 加密中的 <CipherData> 項目。 此類別無法獲得繼承。

public ref class CipherData sealed
public sealed class CipherData
type CipherData = class
Public NotInheritable Class CipherData
繼承
CipherData

範例

下列程式代碼範例會 EncryptedData 使用 類別來建立 <EncryptedData> 包含 <CipherData> 元素的專案,然後將 XML 寫入 XML 檔案。

#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

備註

類別 CipherData 代表 <CipherData> XML 加密中的專案。 這是提供加密數據的必要元素。 它必須包含加密的數據做為元素的 <CipherValue> base64編碼文字,或使用 元素提供包含加密數據 <CipherReference> 的外部位置參考。

在許多情況下,您不需要直接建立 類別的新實例 CipherDataEncryptedXmlEncryptedDataEncryptedKey 類別會為您建立實例。

注意

CipherData物件可以有屬性或CipherValue屬性,但不能同時擁有CipherReference兩者。 CryptographicException如果兩者都指派給 CipherData 物件,則會擲回 。

建構函式

CipherData()

初始化 CipherData 類別的新執行個體。

CipherData(Byte[])

使用位元組陣列做為 CipherData 值,初始化 CipherValue 類別的新執行個體。

CipherData(CipherReference)

使用 CipherData 物件初始化 CipherReference 類別的新執行個體。

屬性

CipherReference

取得或設定 <CipherReference> 項目。

CipherValue

取得或設定 <CipherValue> 項目。

方法

Equals(Object)

判斷指定的物件是否等於目前的物件。

(繼承來源 Object)
GetHashCode()

做為預設雜湊函式。

(繼承來源 Object)
GetType()

取得目前執行個體的 Type

(繼承來源 Object)
GetXml()

取得 CipherData 物件的 XML 值。

LoadXml(XmlElement)

XmlElement 將 XML 資料載入 CipherData 物件內。

MemberwiseClone()

建立目前 Object 的淺層複製。

(繼承來源 Object)
ToString()

傳回代表目前物件的字串。

(繼承來源 Object)

適用於