通过


CipherData 构造函数

定义

初始化 CipherData 类的新实例。

重载

名称 说明
CipherData()

初始化 CipherData 类的新实例。

CipherData(Byte[])

使用字节数组作为CipherValue值初始化类的新实例CipherData

CipherData(CipherReference)

使用CipherReference对象初始化类的新实例CipherData

CipherData()

Source:
CipherData.cs
Source:
CipherData.cs
Source:
CipherData.cs
Source:
CipherData.cs
Source:
CipherData.cs
Source:
CipherData.cs
Source:
CipherData.cs
Source:
CipherData.cs

初始化 CipherData 类的新实例。

public:
 CipherData();
public CipherData();
Public Sub New ()

示例

下面的代码示例演示如何创建类的新实例 CipherData 。 可以在类主题中找到 CipherData 整个示例。

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

注解

此构造函数创建一个 CipherData 对象,该对象表示 <CipherData> XML 加密中的元素。 该 <CipherData> 元素是 XML 加密中的必需元素。

适用于

CipherData(Byte[])

Source:
CipherData.cs
Source:
CipherData.cs
Source:
CipherData.cs
Source:
CipherData.cs
Source:
CipherData.cs
Source:
CipherData.cs
Source:
CipherData.cs
Source:
CipherData.cs

使用字节数组作为CipherValue值初始化类的新实例CipherData

public:
 CipherData(cli::array <System::Byte> ^ cipherValue);
public CipherData(byte[] cipherValue);
new System.Security.Cryptography.Xml.CipherData : byte[] -> System.Security.Cryptography.Xml.CipherData
Public Sub New (cipherValue As Byte())

参数

cipherValue
Byte[]

要用于元素的 <CipherValue> 加密数据。

例外

参数 cipherValuenull.

CipherValue已设置该属性。

示例

下面的代码示例演示如何创建类的新实例 CipherData

// Create a new CipherData object using a byte array to represent encrypted data.
Byte[] sampledata = new byte[8];
CipherData cd = new CipherData(sampledata);

    ' Create a new CipherData object using a byte array to represent encrypted data.
Dim sampledata(7) As Byte
    Dim cd As New CipherData(sampledata)

注解

此构造函数创建一个 CipherData 对象,该对象表示 <CipherData> XML 加密中的元素。 构造函数将 cipherValue 值作为实际加密数据分配给 CipherValue 属性。

注释

<CipherData> 元素可以有一 CipherReference 个或一个子元素,但不能同时具有这两个 CipherValue 元素。 如果两者都分配给对象CipherData,则会引发 ACryptographicException

适用于

CipherData(CipherReference)

Source:
CipherData.cs
Source:
CipherData.cs
Source:
CipherData.cs
Source:
CipherData.cs
Source:
CipherData.cs
Source:
CipherData.cs
Source:
CipherData.cs
Source:
CipherData.cs

使用CipherReference对象初始化类的新实例CipherData

public:
 CipherData(System::Security::Cryptography::Xml::CipherReference ^ cipherReference);
public CipherData(System.Security.Cryptography.Xml.CipherReference cipherReference);
new System.Security.Cryptography.Xml.CipherData : System.Security.Cryptography.Xml.CipherReference -> System.Security.Cryptography.Xml.CipherData
Public Sub New (cipherReference As CipherReference)

参数

cipherReference
CipherReference

CipherReference要使用的对象。

例外

参数 cipherReferencenull.

CipherValue已设置该属性。

示例

下面的代码示例演示如何使用CipherReference信息创建类的新实例CipherData

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

注解

此构造函数创建一个CipherData对象,该对象表示 <CipherData> XML 加密中的元素,并将该值CipherReference分配给cipherReference该属性。 该 CipherReference 对象表示 <CipherReference> 提供加密数据的位置的元素。

注释

对象CipherData可以具有属性或CipherValue属性,但不能同时具有CipherReference两者。 如果两者都分配给对象CipherData,则会引发 ACryptographicException

适用于