DataObject 构造函数
定义
初始化 DataObject 类的新实例。Initializes a new instance of the DataObject class.
重载
| DataObject() |
初始化 DataObject 类的新实例。Initializes a new instance of the DataObject class. |
| DataObject(String, String, String, XmlElement) |
使用指定的标识、MIME 类型、编码和数据初始化 DataObject 类的新实例。Initializes a new instance of the DataObject class with the specified identification, MIME type, encoding, and data. |
DataObject()
初始化 DataObject 类的新实例。Initializes a new instance of the DataObject class.
public:
DataObject();
public DataObject ();
Public Sub New ()
示例
下面的代码示例演示如何生成封装 XML 签名。The following code example demonstrates how to generate an enveloping XML signature.
#using <System.dll>
#using <System.Xml.dll>
#using <System.Security.dll>
using namespace System;
using namespace System::IO;
using namespace System::Security::Cryptography;
using namespace System::Security::Cryptography::Xml;
using namespace System::Xml;
int main()
{
// Create example data to sign.
XmlDocument^ document = gcnew XmlDocument;
XmlNode^ node = document->CreateNode( XmlNodeType::Element, "", "MyElement", "samples" );
node->InnerText = "This is some text";
document->AppendChild( node );
Console::Error->WriteLine( "Data to sign:\n{0}\n", document->OuterXml );
// Create the SignedXml message.
SignedXml^ signedXml = gcnew SignedXml;
RSA^ key = RSA::Create();
signedXml->SigningKey = key;
// Create a data object to hold the data to sign.
DataObject^ dataObject = gcnew DataObject;
dataObject->Data = document->ChildNodes;
dataObject->Id = "MyObjectId";
// Add the data object to the signature.
signedXml->AddObject( dataObject );
// Create a reference to be able to package everything into the
// message.
Reference^ reference = gcnew Reference;
reference->Uri = "#MyObjectId";
// Add it to the message.
signedXml->AddReference( reference );
// Add a KeyInfo.
KeyInfo^ keyInfo = gcnew KeyInfo;
keyInfo->AddClause( gcnew RSAKeyValue( key ) );
signedXml->KeyInfo = keyInfo;
// Compute the signature.
signedXml->ComputeSignature();
// Get the XML representation of the signature.
XmlElement^ xmlSignature = signedXml->GetXml();
Console::WriteLine( xmlSignature->OuterXml );
}
using System;
using System.IO;
using System.Security.Cryptography;
using System.Security.Cryptography.Xml;
using System.Xml;
public class XMLdsigsample1 {
static void Main(String[] args)
{
// Create example data to sign.
XmlDocument document = new XmlDocument();
XmlNode node = document.CreateNode(XmlNodeType.Element, "", "MyElement", "samples");
node.InnerText = "This is some text";
document.AppendChild(node);
Console.Error.WriteLine("Data to sign:\n" + document.OuterXml + "\n");
// Create the SignedXml message.
SignedXml signedXml = new SignedXml();
RSA key = RSA.Create();
signedXml.SigningKey = key;
// Create a data object to hold the data to sign.
DataObject dataObject = new DataObject();
dataObject.Data = document.ChildNodes;
dataObject.Id = "MyObjectId";
// Add the data object to the signature.
signedXml.AddObject(dataObject);
// Create a reference to be able to package everything into the
// message.
Reference reference = new Reference();
reference.Uri = "#MyObjectId";
// Add it to the message.
signedXml.AddReference(reference);
// Add a KeyInfo.
KeyInfo keyInfo = new KeyInfo();
keyInfo.AddClause(new RSAKeyValue(key));
signedXml.KeyInfo = keyInfo;
// Compute the signature.
signedXml.ComputeSignature();
// Get the XML representation of the signature.
XmlElement xmlSignature = signedXml.GetXml();
Console.WriteLine(xmlSignature.OuterXml);
}
}
Imports System.IO
Imports System.Security.Cryptography
Imports System.Security.Cryptography.Xml
Imports System.Xml
_
Public Class XMLdsigsample1
Shared Sub Main(args() As [String])
' Create example data to sign.
Dim document As New XmlDocument()
Dim node As XmlNode = document.CreateNode(XmlNodeType.Element, "", "MyElement", "samples")
node.InnerText = "This is some text"
document.AppendChild(node)
Console.Error.WriteLine("Data to sign:")
Console.Error.WriteLine()
Console.Error.WriteLine(document.OuterXml)
Console.Error.WriteLine()
' Create the SignedXml message.
Dim signedXml As New SignedXml()
Dim key As RSA = RSA.Create()
signedXml.SigningKey = key
' Create a data object to hold the data to sign.
Dim dataObject As New DataObject()
dataObject.Data = document.ChildNodes
dataObject.Id = "MyObjectId"
' Add the data object to the signature.
signedXml.AddObject(dataObject)
' Create a reference to be able to package everything into the
' message.
Dim reference As New Reference()
reference.Uri = "#MyObjectId"
' Add it to the message.
signedXml.AddReference(reference)
' Add a KeyInfo.
Dim keyInfo As New KeyInfo()
keyInfo.AddClause(New RSAKeyValue(key))
signedXml.KeyInfo = keyInfo
' Compute the signature.
signedXml.ComputeSignature()
' Get the XML representation of the signature.
Dim xmlSignature As XmlElement = signedXml.GetXml()
Console.WriteLine(xmlSignature.OuterXml)
End Sub
End Class
下面的代码示例演示如何检查 XML 签名。The following code example demonstrates how to check an XML signature.
#using <System.dll>
#using <System.Security.dll>
#using <System.Xml.dll>
using namespace System;
using namespace System::Security::Cryptography;
using namespace System::Security::Cryptography::Xml;
using namespace System::IO;
using namespace System::Xml;
int main()
{
array<String^>^args = System::Environment::GetCommandLineArgs();
Console::WriteLine( "Verifying {0}...", args[ 1 ] );
// Create a SignedXml.
SignedXml^ signedXml = gcnew SignedXml;
// Load the XML.
XmlDocument^ xmlDocument = gcnew XmlDocument;
xmlDocument->PreserveWhitespace = true;
xmlDocument->Load( gcnew XmlTextReader( args[ 1 ] ) );
XmlNodeList^ nodeList = xmlDocument->GetElementsByTagName( "Signature" );
signedXml->LoadXml( safe_cast<XmlElement^>(nodeList[ 0 ]) );
if ( signedXml->CheckSignature() )
{
Console::WriteLine( "Signature check OK" );
}
else
{
Console::WriteLine( "Signature check FAILED" );
}
}
using System;
using System.Security.Cryptography;
using System.Security.Cryptography.Xml;
using System.IO;
using System.Xml;
public class Verify {
public static void Main(String[] args)
{
Console.WriteLine("Verifying " + args[0] + "...");
// Create a SignedXml.
SignedXml signedXml = new SignedXml();
// Load the XML.
XmlDocument xmlDocument = new XmlDocument();
xmlDocument.PreserveWhitespace = true;
xmlDocument.Load(new XmlTextReader(args[0]));
XmlNodeList nodeList = xmlDocument.GetElementsByTagName("Signature");
signedXml.LoadXml((XmlElement)nodeList[0]);
if (signedXml.CheckSignature()) {
Console.WriteLine("Signature check OK");
} else {
Console.WriteLine("Signature check FAILED");
}
}
}
Imports System.Security.Cryptography
Imports System.Security.Cryptography.Xml
Imports System.IO
Imports System.Xml
_
Public Class Verify
Public Shared Sub Main(args() As [String])
Console.WriteLine(("Verifying " + args(0) + "..."))
' Create a SignedXml.
Dim signedXml As New SignedXml()
' Load the XML.
Dim xmlDocument As New XmlDocument()
xmlDocument.PreserveWhitespace = True
xmlDocument.Load(New XmlTextReader(args(0)))
Dim nodeList As XmlNodeList = xmlDocument.GetElementsByTagName("Signature")
signedXml.LoadXml(CType(nodeList(0), XmlElement))
If signedXml.CheckSignature() Then
Console.WriteLine("Signature check OK")
Else
Console.WriteLine("Signature check FAILED")
End If
End Sub
End Class
注解
DataObject类与 XML 签名一起使用。The DataObject class is used with XML signatures. 初始化后 DataObject ,可以分配 Data 和 Id 属性。After you have initialized the DataObject, you can assign the Data and Id properties.
适用于
DataObject(String, String, String, XmlElement)
使用指定的标识、MIME 类型、编码和数据初始化 DataObject 类的新实例。Initializes a new instance of the DataObject class with the specified identification, MIME type, encoding, and data.
public:
DataObject(System::String ^ id, System::String ^ mimeType, System::String ^ encoding, System::Xml::XmlElement ^ data);
public DataObject (string id, string mimeType, string encoding, System.Xml.XmlElement data);
new System.Security.Cryptography.Xml.DataObject : string * string * string * System.Xml.XmlElement -> System.Security.Cryptography.Xml.DataObject
Public Sub New (id As String, mimeType As String, encoding As String, data As XmlElement)
参数
- id
- String
用于初始化 DataObject 的新实例的标识。The identification to initialize the new instance of DataObject with.
- mimeType
- String
用于初始化 DataObject 的新实例的数据的 MIME 类型。The MIME type of the data used to initialize the new instance of DataObject.
- encoding
- String
用于初始化 DataObject 的新实例的数据的编码。The encoding of the data used to initialize the new instance of DataObject.
- data
- XmlElement
用于初始化 DataObject 的新实例的数据。The data to initialize the new instance of DataObject with.
例外
data 参数为 null。The data parameter is null.
注解
DataObject类与 XML 签名一起使用。The DataObject class is used with XML signatures. id参数引用包含要使用的数据的元素的名称。The id parameter refers to the name of the element that contains the data to be used. data参数引用包含 parameter 元素的 XML 节点列表 id 。The data parameter refers to the XML node list that contains the id parameter element.