KeyInfoX509Dataとは何？わかりやすく解説 Weblio辞書

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KeyInfoX509Data クラス

XMLDSIG または XML Encryption <KeyInfo> 要素の <X509Data> サブ要素を表します。

名前空間: System.Security.Cryptography.Xml
アセンブリ: System.Security (system.security.dll 内)
構文

Visual Basic (宣言)

Public Class KeyInfoX509Data
    Inherits KeyInfoClause

Visual Basic (使用法)

Dim instance As KeyInfoX509Data

public class KeyInfoX509Data : KeyInfoClause

C++

public ref class KeyInfoX509Data : public
 KeyInfoClause

public class KeyInfoX509Data extends KeyInfoClause

JScript

public class KeyInfoX509Data extends
 KeyInfoClause

解説

KeyInfoX509Data クラスは、検証キーまたは暗号化キーに関連付けられている X.509v3 証明書情報を含む <X509Data> 要素を表します。たとえば、<X509Data> 要素には、サブジェクト公開キーが検証キーである X.509 証明書、検証キーの証明書で終了している X.509 証明書のチェーン、または関連付けられている X.509 証明書のその他の識別子を格納する場合があります。

KeyInfoX509Data クラスは、X.509 証明書データを暗号化または署名された XML ドキュメントに含める必要がある場合に必ず使用します。

<X509Data> 要素の詳細については、W3C (World Wide Web Consortium) (www.w3.org/TR/xmldsig-core/) から入手できる XMLDSIG 仕様のセクション 4.4.4 を参照するか、または W3C から入手できる XML Encryption 仕様 (www.w3.org/TR/xmlenc-core/) を参照してください。

使用例

このセクションには、2 つのコード例が含まれています。最初の例では、デタッチシグネチャを使用して XML ファイルに署名する方法を示します。2 番目の例では、エンベロープシグネチャを使用して XML ファイルに署名する方法を示します。

例 1

Visual Basic

'
' This example signs a file specified by a URI 
' using a detached signature. It then verifies  
' the signed XML.
'
Imports System
Imports System.Security.Cryptography
Imports System.Security.Cryptography.Xml
Imports System.Security.Cryptography.X509Certificates
Imports System.Text
Imports System.Xml





Class XMLDSIGDetached
   
  
   <STAThread()>  _
   Overloads Shared Sub
 Main(args() As String)
      ' The URI to sign.
      Dim resourceToSign As String
 = "http://www.microsoft.com"
      
      ' The name of the file to which to save the XML signature.
      Dim XmlFileName As String
 = "xmldsig.xml"
      
      ' The name of the X509 certificate
      Dim Certificate As String
 = "microsoft.cer"
      
      Try
         
         ' Generate a signing key. This key should match the 
         ' certificate.
         Dim Key As New
 RSACryptoServiceProvider()
         
         Console.WriteLine("Signing: {0}", resourceToSign)
         
         ' Sign the detached resourceand save the signature in an XML
 file.
         SignDetachedResource(resourceToSign, XmlFileName, Key, Certificate)
         
         Console.WriteLine("XML signature was succesfully computed
 and saved to {0}.", XmlFileName)
      
      Catch e As CryptographicException
         Console.WriteLine(e.Message)
      End Try 
   End Sub 
   
   
   
   ' Sign an XML file and save the signature in a new file.
   Public Shared Sub SignDetachedResource(URIString
 As String, XmlSigFileName As
 String, Key As RSA, Certificate As String)
      ' Create a SignedXml object.
      Dim signedXml As New
 SignedXml()
      
      ' Assign the key to the SignedXml object.
      signedXml.SigningKey = Key
      
      ' Create a reference to be signed.
      Dim reference As New
 Reference()
      
      ' Add the passed URI to the reference object.
      reference.Uri = URIString
      
      ' Add the reference to the SignedXml object.
      signedXml.AddReference(reference)
      
      ' Create a new KeyInfo object.
      Dim keyInfo As New
 KeyInfo()
      
      ' Load the X509 certificate.
      Dim MSCert As X509Certificate = X509Certificate.CreateFromCertFile(Certificate)
      
      ' Load the certificate into a KeyInfoX509Data object
      ' and add it to the KeyInfo object.
      keyInfo.AddClause(New KeyInfoX509Data(MSCert))
      
      ' Add the KeyInfo object to the SignedXml object.
      signedXml.KeyInfo = keyInfo
      
      ' Compute the signature.
      signedXml.ComputeSignature()
      
      ' Get the XML representation of the signature and save
      ' it to an XmlElement object.
      Dim xmlDigitalSignature As XmlElement
 = signedXml.GetXml()
      
      ' Save the signed XML document to a file specified
      ' using the passed string.
      Dim xmltw As New XmlTextWriter(XmlSigFileName,
 New UTF8Encoding(False))
      xmlDigitalSignature.WriteTo(xmltw)
      xmltw.Close()
   End Sub  
End Class

//
// This example signs a file specified by a URI 
// using a detached signature. It then verifies  
// the signed XML.
//

using System;
using System.Security.Cryptography;
using System.Security.Cryptography.Xml;
using System.Security.Cryptography.X509Certificates;
using System.Text;
using System.Xml;



class XMLDSIGDetached
{
    
    [STAThread]
    static void Main(string[]
 args)
    {
        // The URI to sign.
        string resourceToSign = "http://www.microsoft.com";
        
        // The name of the file to which to save the XML signature.
        string XmlFileName = "xmldsig.xml";

        // The name of the X509 certificate
        string Certificate = "microsoft.cer";

        try
        {

            // Generate a signing key. This key should match the certificate.
            RSACryptoServiceProvider Key = new RSACryptoServiceProvider();

            Console.WriteLine("Signing: {0}", resourceToSign);

            // Sign the detached resourceand save the signature in an
 XML file.
            SignDetachedResource(resourceToSign, XmlFileName, Key, Certificate);

            Console.WriteLine("XML signature was succesfully computed and saved
 to {0}.", XmlFileName);

        }
        catch(CryptographicException e)
        {
            Console.WriteLine(e.Message);

        }
        
    }

    // Sign an XML file and save the signature in a new file.
    public static void SignDetachedResource(string
 URIString, string XmlSigFileName, RSA Key, string
 Certificate)
    {
        // Create a SignedXml object.
        SignedXml signedXml = new SignedXml();

        // Assign the key to the SignedXml object.
        signedXml.SigningKey = Key;

        // Create a reference to be signed.
        Reference reference = new Reference();

        // Add the passed URI to the reference object.
        reference.Uri = URIString;
        
        // Add the reference to the SignedXml object.
        signedXml.AddReference(reference);

        // Create a new KeyInfo object.
        KeyInfo keyInfo = new KeyInfo();

        // Load the X509 certificate.
        X509Certificate MSCert = X509Certificate.CreateFromCertFile(Certificate);
 
        // Load the certificate into a KeyInfoX509Data object
        // and add it to the KeyInfo object.
        keyInfo.AddClause(new KeyInfoX509Data(MSCert));
  
        // Add the KeyInfo object to the SignedXml object.
        signedXml.KeyInfo = keyInfo;

        // Compute the signature.
        signedXml.ComputeSignature();

        // Get the XML representation of the signature and save
        // it to an XmlElement object.
        XmlElement xmlDigitalSignature = signedXml.GetXml();

        // Save the signed XML document to a file specified
        // using the passed string.
        XmlTextWriter xmltw = new XmlTextWriter(XmlSigFileName,
 new UTF8Encoding(false));
        xmlDigitalSignature.WriteTo(xmltw);
        xmltw.Close();

    }
}

C++

//
// This example signs a file specified by a URI 
// using a detached signature. It then verifies  
// the signed XML.
//
#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::Security::Cryptography::X509Certificates;
using namespace System::Text;
using namespace System::Xml;

// Sign an XML file and save the signature in a new file.
void SignDetachedResource( String^ URIString, String^ XmlSigFileName,
 RSA^ Key, String^ Certificate )
{
   
   // Create a SignedXml object.
   SignedXml^ signedXml = gcnew SignedXml;
   
   // Assign the key to the SignedXml object.
   signedXml->SigningKey = Key;
   
   // Create a reference to be signed.
   Reference^ reference = gcnew Reference;
   
   // Add the passed URI to the reference object.
   reference->Uri = URIString;
   
   // Add the reference to the SignedXml object.
   signedXml->AddReference( reference );
   
   // Create a new KeyInfo object.
   KeyInfo^ keyInfo = gcnew KeyInfo;
   
   // Load the X509 certificate.
   X509Certificate^ MSCert = X509Certificate::CreateFromCertFile( Certificate );
   
   // Load the certificate into a KeyInfoX509Data object
   // and add it to the KeyInfo object.
   keyInfo->AddClause( gcnew KeyInfoX509Data( MSCert ) );
   
   // Add the KeyInfo object to the SignedXml object.
   signedXml->KeyInfo = keyInfo;
   
   // Compute the signature.
   signedXml->ComputeSignature();
   
   // Get the XML representation of the signature and save
   // it to an XmlElement object.
   XmlElement^ xmlDigitalSignature = signedXml->GetXml();
   
   // Save the signed XML document to a file specified
   // using the passed string.
   XmlTextWriter^ xmltw = gcnew XmlTextWriter( XmlSigFileName,gcnew UTF8Encoding(
 false ) );
   xmlDigitalSignature->WriteTo( xmltw );
   xmltw->Close();
}



[STAThread]
int main()
{
   array<String^>^args = Environment::GetCommandLineArgs();
   
   // The URI to sign.
   String^ resourceToSign = "http://www.microsoft.com";
   
   // The name of the file to which to save the XML signature.
   String^ XmlFileName = "xmldsig.xml";
   
   // The name of the X509 certificate
   String^ Certificate = "microsoft.cer";
   try
   {
      
      // Generate a signing key. This key should match the certificate.
      RSACryptoServiceProvider^ Key = gcnew RSACryptoServiceProvider;
      Console::WriteLine( "Signing: {0}", resourceToSign );
      
      // Sign the detached resource and save the signature in an XML
 file.
      SignDetachedResource( resourceToSign, XmlFileName, Key, Certificate );
      Console::WriteLine( "XML signature was succesfully computed and saved
 to {0}.", XmlFileName );
   }
   catch ( CryptographicException^ e ) 
   {
      Console::WriteLine( e->Message );
   }

}

//
// This example signs a file specified by a URI 
// using a detached signature. It then verifies  
// the signed XML.
//
import System.*;
import System.Security.Cryptography.*;
import System.Security.Cryptography.Xml.*;
import System.Security.Cryptography.X509Certificates.*;
import System.Text.*;
import System.Xml.*;

class XMLDSIGDetached
{
    /** @attribute STAThread()
     */
    public static void main(String[]
 args)
    {
        // The URI to sign.
        String resourceToSign = "http://www.microsoft.com";

        // The name of the file to which to save the XML signature.
        String xmlFileName = "xmldsig.xml";

        // The name of the X509 certificate
        String certificate = "microsoft.cer";

        try {
            // Generate a signing key. This key should match the certificate.
            RSACryptoServiceProvider key = new RSACryptoServiceProvider();

            Console.WriteLine("Signing: {0}", resourceToSign);

            // Sign the detached resourceand save the signature in an
 XML file.
            SignDetachedResource(resourceToSign, xmlFileName, key, certificate);
            Console.WriteLine("XML signature was succesfully " 
                + "computed and saved to {0}.", xmlFileName);
        }
        catch (CryptographicException e) {
            Console.WriteLine(e.get_Message());
        }
    } //main

    // Sign an XML file and save the signature in a new file.
    public static void SignDetachedResource(String
 uriString, 
        String xmlSigFileName, RSA key, String certificate)
    {
        // Create a SignedXml object.
        SignedXml signedXml = new SignedXml();

        // Assign the key to the SignedXml object.
        signedXml.set_SigningKey(key);

        // Create a reference to be signed.
        Reference reference = new Reference();

        // Add the passed URI to the reference object.
        reference.set_Uri(uriString);

        // Add a transformation if the URI is an XML file.
        if (uriString.EndsWith("xml")) {
            reference.AddTransform(new XmlDsigC14NTransform());
        }

        // Add the reference to the SignedXml object.
        signedXml.AddReference(reference);

        // Create a new KeyInfo object.
        KeyInfo keyInfo = new KeyInfo();

        // Load the X509 certificate.
        X509Certificate msCert = 
            X509Certificate.CreateFromCertFile(certificate);

        // Load the certificate into a KeyInfoX509Data object
        // and add it to the KeyInfo object.
        keyInfo.AddClause(new KeyInfoX509Data(msCert));

        // Add the KeyInfo object to the SignedXml object.
        signedXml.set_KeyInfo(keyInfo);

        // Compute the signature.
        signedXml.ComputeSignature();

        // Get the XML representation of the signature and save
        // it to an XmlElement object.
        XmlElement xmlDigitalSignature = signedXml.GetXml();

        // Save the signed XML document to a file specified
        // using the passed string.
        XmlTextWriter xmlTW = 
            new XmlTextWriter(xmlSigFileName, new
 UTF8Encoding(false));

        xmlDigitalSignature.WriteTo(xmlTW);
        xmlTW.Close();
    } //SignDetachedResource 
} //XMLDSIGDetached

例 2

Visual Basic

'
' This example signs an XML file using an
' envelope signature. It then verifies the 
' signed XML.
'
Imports System
Imports System.Security.Cryptography
Imports System.Security.Cryptography.Xml
Imports System.Security.Cryptography.X509Certificates
Imports System.Text
Imports System.Xml



Public Class SignVerifyEnvelope
   
   
   Overloads Public Shared
 Sub Main(args() As [String])
      
      Dim Certificate As String
 = "microsoft.cer"
      
      Try
         ' Generate a signing key.
         Dim Key As New
 RSACryptoServiceProvider()
         
         ' Create an XML file to sign.
         CreateSomeXml("Example.xml")
         Console.WriteLine("New XML file created.")
         
         ' Sign the XML that was just created and save it in a 
         ' new file.
         SignXmlFile("Example.xml", "SignedExample.xml",
 Key, Certificate)
         Console.WriteLine("XML file signed.")
      Catch e As CryptographicException
         Console.WriteLine(e.Message)
      End Try
   End Sub 
   
   
   ' Sign an XML file and save the signature in a new file.
   Public Shared Sub SignXmlFile(FileName
 As String, SignedFileName As
 String, Key As RSA, Certificate As String)
      ' Create a new XML document.
      Dim doc As New XmlDocument()
      
      ' Format the document to ignore white spaces.
      doc.PreserveWhitespace = False
      
      ' Load the passed XML file using it's name.
      doc.Load(New XmlTextReader(FileName))
      
      ' Create a SignedXml object.
      Dim signedXml As New
 SignedXml(doc)
      
      ' Add the key to the SignedXml document. 
      signedXml.SigningKey = Key
      
      ' Create a reference to be signed.
      Dim reference As New
 Reference()
      reference.Uri = ""
      
      ' Add an enveloped transformation to the reference.
      Dim env As New XmlDsigEnvelopedSignatureTransform()
      reference.AddTransform(env)
      
      ' Add the reference to the SignedXml object.
      signedXml.AddReference(reference)
      
      ' Create a new KeyInfo object.
      Dim keyInfo As New
 KeyInfo()
      
      ' Load the X509 certificate.
      Dim MSCert As X509Certificate = X509Certificate.CreateFromCertFile(Certificate)
      
      ' Load the certificate into a KeyInfoX509Data object
      ' and add it to the KeyInfo object.
      keyInfo.AddClause(New KeyInfoX509Data(MSCert))
      
      ' Add the KeyInfo object to the SignedXml object.
      signedXml.KeyInfo = keyInfo
      
      ' Compute the signature.
      signedXml.ComputeSignature()
      
      ' Get the XML representation of the signature and save
      ' it to an XmlElement object.
      Dim xmlDigitalSignature As XmlElement
 = signedXml.GetXml()
      
      ' Append the element to the XML document.
      doc.DocumentElement.AppendChild(doc.ImportNode(xmlDigitalSignature, True))
      
      
      If TypeOf doc.FirstChild Is
 XmlDeclaration Then
         doc.RemoveChild(doc.FirstChild)
      End If
      
      ' Save the signed XML document to a file specified
      ' using the passed string.
      Dim xmltw As New XmlTextWriter(SignedFileName,
 New UTF8Encoding(False))
      doc.WriteTo(xmltw)
      xmltw.Close()
   End Sub 
   
   
   ' Create example data to sign.
   Public Shared Sub CreateSomeXml(FileName
 As String)
      ' Create a new XmlDocument object.
      Dim document As New
 XmlDocument()
      
      ' Create a new XmlNode object.
      Dim node As XmlNode = document.CreateNode(XmlNodeType.Element,
 "", "MyElement",
 "samples")
      
      ' Add some text to the node.
      node.InnerText = "Example text to be signed."
      
      ' Append the node to the document.
      document.AppendChild(node)
      
      ' Save the XML document to the file name specified.
      Dim xmltw As New XmlTextWriter(FileName,
 New UTF8Encoding(False))
      document.WriteTo(xmltw)
      xmltw.Close()
   End Sub 
End Class

//
// This example signs an XML file using an
// envelope signature. It then verifies the 
// signed XML.
//
using System;
using System.Security.Cryptography;
using System.Security.Cryptography.Xml;
using System.Security.Cryptography.X509Certificates;
using System.Text;
using System.Xml;

public class SignVerifyEnvelope
{

    public static void Main(String[]
 args)
    {

        string Certificate =  "microsoft.cer";

        try
        {
            // Generate a signing key.
            RSACryptoServiceProvider Key = new RSACryptoServiceProvider();

            // Create an XML file to sign.
            CreateSomeXml("Example.xml");
            Console.WriteLine("New XML file created."); 

            // Sign the XML that was just created and save it in a 
            // new file.
            SignXmlFile("Example.xml", "SignedExample.xml", Key,
 Certificate);
            Console.WriteLine("XML file signed."); 
        }
        catch(CryptographicException e)
        {
            Console.WriteLine(e.Message);
        }
    }

    // Sign an XML file and save the signature in a new file.
    public static void SignXmlFile(string
 FileName, string SignedFileName, RSA Key, string
 Certificate)
    {
        // Create a new XML document.
        XmlDocument doc = new XmlDocument();

        // Format the document to ignore white spaces.
        doc.PreserveWhitespace = false;

        // Load the passed XML file using it's name.
        doc.Load(new XmlTextReader(FileName));

        // Create a SignedXml object.
        SignedXml signedXml = new SignedXml(doc);

        // Add the key to the SignedXml document. 
        signedXml.SigningKey = Key;

        // Create a reference to be signed.
        Reference reference = new Reference();
        reference.Uri = "";

        // Add an enveloped transformation to the reference.
        XmlDsigEnvelopedSignatureTransform env = new XmlDsigEnvelopedSignatureTransform();
        reference.AddTransform(env);

        // Add the reference to the SignedXml object.
        signedXml.AddReference(reference);

        // Create a new KeyInfo object.
        KeyInfo keyInfo = new KeyInfo();

        // Load the X509 certificate.
        X509Certificate MSCert = X509Certificate.CreateFromCertFile(Certificate);
 
        // Load the certificate into a KeyInfoX509Data object
        // and add it to the KeyInfo object.
        keyInfo.AddClause(new KeyInfoX509Data(MSCert));
  
        // Add the KeyInfo object to the SignedXml object.
        signedXml.KeyInfo = keyInfo;

        // Compute the signature.
        signedXml.ComputeSignature();

        // Get the XML representation of the signature and save
        // it to an XmlElement object.
        XmlElement xmlDigitalSignature = signedXml.GetXml();

        // Append the element to the XML document.
        doc.DocumentElement.AppendChild(doc.ImportNode(xmlDigitalSignature, true));
        
        
        if (doc.FirstChild is XmlDeclaration)  
        {
            doc.RemoveChild(doc.FirstChild);
        }

        // Save the signed XML document to a file specified
        // using the passed string.
        XmlTextWriter xmltw = new XmlTextWriter(SignedFileName,
 new UTF8Encoding(false));
        doc.WriteTo(xmltw);
        xmltw.Close();
    }


    // Create example data to sign.
    public static void CreateSomeXml(string
 FileName)
    {
        // Create a new XmlDocument object.
        XmlDocument document = new XmlDocument();

        // Create a new XmlNode object.
        XmlNode  node = document.CreateNode(XmlNodeType.Element, "", "MyElement",
 "samples");
        
        // Add some text to the node.
        node.InnerText = "Example text to be signed.";

        // Append the node to the document.
        document.AppendChild(node);

        // Save the XML document to the file name specified.
        XmlTextWriter xmltw = new XmlTextWriter(FileName, new
 UTF8Encoding(false));
        document.WriteTo(xmltw);
        xmltw.Close();
    }
}

C++

//
// This example signs an XML file using an
// envelope signature. It then verifies the 
// signed XML.
//
#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::Security::Cryptography::X509Certificates;
using namespace System::Text;
using namespace System::Xml;

// Sign an XML file and save the signature in a new file.
void SignXmlFile( String^ FileName, String^ SignedFileName, RSA^
 Key, String^ Certificate )
{
   
   // Create a new XML document.
   XmlDocument^ doc = gcnew XmlDocument;
   
   // Format the document to ignore white spaces.
   doc->PreserveWhitespace = false;
   
   // Load the passed XML file using its name.
   doc->Load( gcnew XmlTextReader( FileName ) );
   
   // Create a SignedXml object.
   SignedXml^ signedXml = gcnew SignedXml( doc );
   
   // Add the key to the SignedXml document. 
   signedXml->SigningKey = Key;
   
   // Create a reference to be signed.
   Reference^ reference = gcnew Reference;
   reference->Uri = "";
   
   // Add an enveloped transformation to the reference.
   XmlDsigEnvelopedSignatureTransform^ env = gcnew XmlDsigEnvelopedSignatureTransform;
   reference->AddTransform( env );
   
   // Add the reference to the SignedXml object.
   signedXml->AddReference( reference );
   
   // Create a new KeyInfo object.
   KeyInfo^ keyInfo = gcnew KeyInfo;
   
   // Load the X509 certificate.
   X509Certificate^ MSCert = X509Certificate::CreateFromCertFile( Certificate );
   
   // Load the certificate into a KeyInfoX509Data object
   // and add it to the KeyInfo object.
   keyInfo->AddClause( gcnew KeyInfoX509Data( MSCert ) );
   
   // Add the KeyInfo object to the SignedXml object.
   signedXml->KeyInfo = keyInfo;
   
   // Compute the signature.
   signedXml->ComputeSignature();
   
   // Get the XML representation of the signature and save
   // it to an XmlElement object.
   XmlElement^ xmlDigitalSignature = signedXml->GetXml();
   
   // Append the element to the XML document.
   doc->DocumentElement->AppendChild( doc->ImportNode( xmlDigitalSignature,
 true ) );
   if ( (doc->FirstChild)->GetType() == XmlDeclaration::typeid
 )
   {
      doc->RemoveChild( doc->FirstChild );
   }

   
   // Save the signed XML document to a file specified
   // using the passed string.
   XmlTextWriter^ xmltw = gcnew XmlTextWriter( SignedFileName,gcnew UTF8Encoding(
 false ) );
   doc->WriteTo( xmltw );
   xmltw->Close();
}


// Create example data to sign.
void CreateSomeXml( String^ FileName )
{
   
   // Create a new XmlDocument object.
   XmlDocument^ document = gcnew XmlDocument;
   
   // Create a new XmlNode object.
   XmlNode^ node = document->CreateNode( XmlNodeType::Element, "", "MyElement",
 "samples" );
   
   // Add some text to the node.
   node->InnerText = "Example text to be signed.";
   
   // Append the node to the document.
   document->AppendChild( node );
   
   // Save the XML document to the file name specified.
   XmlTextWriter^ xmltw = gcnew XmlTextWriter( FileName,gcnew UTF8Encoding( false
 ) );
   document->WriteTo( xmltw );
   xmltw->Close();
}

int main()
{
   String^ Certificate = "microsoft.cer";
   try
   {
      
      // Generate a signing key.
      RSACryptoServiceProvider^ Key = gcnew RSACryptoServiceProvider;
      
      // Create an XML file to sign.
      CreateSomeXml( "Example.xml" );
      Console::WriteLine( "New XML file created." );
      
      // Sign the XML that was just created and save it in a 
      // new file.
      SignXmlFile( "Example.xml", "SignedExample.xml", Key, Certificate
 );
      Console::WriteLine( "XML file signed." );
   }
   catch ( CryptographicException^ e ) 
   {
      Console::WriteLine( e->Message );
   }

   return 0;
}

継承階層

System.Object
System.Security.Cryptography.Xml.KeyInfoClause
System.Security.Cryptography.Xml.KeyInfoX509Data

スレッドセーフ

この型の public static (Visual Basic では Shared) メンバはすべて、スレッドセーフです。インスタンスメンバの場合は、スレッドセーフであるとは限りません。

プラットフォーム

バージョン情報

.NET Framework
サポート対象 : 2.0、1.1、1.0

参照

関連項目
KeyInfoX509Data メンバ
System.Security.Cryptography.Xml 名前空間

KeyInfoX509Data コンストラクタ ()

KeyInfoX509Data クラスの新しいインスタンスを初期化します。

名前空間: System.Security.Cryptography.Xml
アセンブリ: System.Security (system.security.dll 内)
構文

Visual Basic (宣言)

Public Sub New

Visual Basic (使用法)

Dim instance As New KeyInfoX509Data

public KeyInfoX509Data ()

C++

public:
KeyInfoX509Data ()

public KeyInfoX509Data ()

JScript

public function KeyInfoX509Data ()

プラットフォーム

バージョン情報

.NET Framework
サポート対象 : 2.0、1.1、1.0

参照

関連項目
KeyInfoX509Data クラス
KeyInfoX509Data メンバ
System.Security.Cryptography.Xml 名前空間

KeyInfoX509Data コンストラクタ (Byte[])

指定した X.509v3 証明書の ASN.1 DER エンコーディングからKeyInfoX509Data クラスの新しいインスタンスを初期化します。

名前空間: System.Security.Cryptography.Xml
アセンブリ: System.Security (system.security.dll 内)
構文

Visual Basic (宣言)

Public Sub New ( _
    rgbCert As Byte() _
)

Visual Basic (使用法)

Dim rgbCert As Byte()

Dim instance As New KeyInfoX509Data(rgbCert)

public KeyInfoX509Data (
    byte[] rgbCert
)

C++

public:
KeyInfoX509Data (
    array<unsigned char>^ rgbCert
)

public KeyInfoX509Data (
    byte[] rgbCert
)

JScript

public function KeyInfoX509Data (
    rgbCert : byte[]
)

パラメータ

rgbCert: KeyInfoX509Data の新しいインスタンスを初期化するために使用する X509Certificate オブジェクトの ASN.1 DER エンコーディング。

プラットフォーム

バージョン情報

.NET Framework
サポート対象 : 2.0、1.1、1.0

参照

関連項目
KeyInfoX509Data クラス
KeyInfoX509Data メンバ
System.Security.Cryptography.Xml 名前空間

KeyInfoX509Data コンストラクタ (X509Certificate)

指定した X.509v3 証明書から KeyInfoX509Data クラスの新しいインスタンスを初期化します。

名前空間: System.Security.Cryptography.Xml
アセンブリ: System.Security (system.security.dll 内)
構文

Visual Basic (宣言)

Public Sub New ( _
    cert As X509Certificate _
)

Visual Basic (使用法)

Dim cert As X509Certificate

Dim instance As New KeyInfoX509Data(cert)

public KeyInfoX509Data (
    X509Certificate cert
)

C++

public:
KeyInfoX509Data (
    X509Certificate^ cert
)

public KeyInfoX509Data (
    X509Certificate cert
)

JScript

public function KeyInfoX509Data (
    cert : X509Certificate
)

パラメータ

cert: KeyInfoX509Data の新しいインスタンスを初期化するために使用する X509Certificate オブジェクト。

例外

例外の種類	条件
ArgumentNullException	cert パラメータが null 参照 (Visual Basic では Nothing) です。

使用例

例 1

Visual Basic

   ' Sign an XML file and save the signature in a new file.
   Public Shared Sub SignDetachedResource(URIString
 As String, XmlSigFileName As
 String, Key As RSA, Certificate As String)
      ' Create a SignedXml object.
      Dim signedXml As New
 SignedXml()
      
      ' Assign the key to the SignedXml object.
      signedXml.SigningKey = Key
      
      ' Create a reference to be signed.
      Dim reference As New
 Reference()
      
      ' Add the passed URI to the reference object.
      reference.Uri = URIString
      
      ' Add the reference to the SignedXml object.
      signedXml.AddReference(reference)
      
      ' Create a new KeyInfo object.
      Dim keyInfo As New
 KeyInfo()
      
      ' Load the X509 certificate.
      Dim MSCert As X509Certificate = X509Certificate.CreateFromCertFile(Certificate)
      
      ' Load the certificate into a KeyInfoX509Data object
      ' and add it to the KeyInfo object.
      keyInfo.AddClause(New KeyInfoX509Data(MSCert))
      
      ' Add the KeyInfo object to the SignedXml object.
      signedXml.KeyInfo = keyInfo
      
      ' Compute the signature.
      signedXml.ComputeSignature()
      
      ' Get the XML representation of the signature and save
      ' it to an XmlElement object.
      Dim xmlDigitalSignature As XmlElement
 = signedXml.GetXml()
      
      ' Save the signed XML document to a file specified
      ' using the passed string.
      Dim xmltw As New XmlTextWriter(XmlSigFileName,
 New UTF8Encoding(False))
      xmlDigitalSignature.WriteTo(xmltw)
      xmltw.Close()
   End Sub  
End Class

// Sign an XML file and save the signature in a new file.
public static void SignDetachedResource(string
 URIString, string XmlSigFileName, RSA Key, string
 Certificate)
{
    // Create a SignedXml object.
    SignedXml signedXml = new SignedXml();

    // Assign the key to the SignedXml object.
    signedXml.SigningKey = Key;

    // Create a reference to be signed.
    Reference reference = new Reference();

    // Add the passed URI to the reference object.
    reference.Uri = URIString;
    
    // Add the reference to the SignedXml object.
    signedXml.AddReference(reference);

    // Create a new KeyInfo object.
    KeyInfo keyInfo = new KeyInfo();

    // Load the X509 certificate.
    X509Certificate MSCert = X509Certificate.CreateFromCertFile(Certificate);
 
    // Load the certificate into a KeyInfoX509Data object
    // and add it to the KeyInfo object.
    keyInfo.AddClause(new KeyInfoX509Data(MSCert));
  
    // Add the KeyInfo object to the SignedXml object.
    signedXml.KeyInfo = keyInfo;

    // Compute the signature.
    signedXml.ComputeSignature();

    // Get the XML representation of the signature and save
    // it to an XmlElement object.
    XmlElement xmlDigitalSignature = signedXml.GetXml();

    // Save the signed XML document to a file specified
    // using the passed string.
    XmlTextWriter xmltw = new XmlTextWriter(XmlSigFileName, new
 UTF8Encoding(false));
    xmlDigitalSignature.WriteTo(xmltw);
    xmltw.Close();

}

C++

// Sign an XML file and save the signature in a new file.
void SignDetachedResource( String^ URIString, String^ XmlSigFileName,
 RSA^ Key, String^ Certificate )
{
   
   // Create a SignedXml object.
   SignedXml^ signedXml = gcnew SignedXml;
   
   // Assign the key to the SignedXml object.
   signedXml->SigningKey = Key;
   
   // Create a reference to be signed.
   Reference^ reference = gcnew Reference;
   
   // Add the passed URI to the reference object.
   reference->Uri = URIString;
   
   // Add the reference to the SignedXml object.
   signedXml->AddReference( reference );
   
   // Create a new KeyInfo object.
   KeyInfo^ keyInfo = gcnew KeyInfo;
   
   // Load the X509 certificate.
   X509Certificate^ MSCert = X509Certificate::CreateFromCertFile( Certificate );
   
   // Load the certificate into a KeyInfoX509Data object
   // and add it to the KeyInfo object.
   keyInfo->AddClause( gcnew KeyInfoX509Data( MSCert ) );
   
   // Add the KeyInfo object to the SignedXml object.
   signedXml->KeyInfo = keyInfo;
   
   // Compute the signature.
   signedXml->ComputeSignature();
   
   // Get the XML representation of the signature and save
   // it to an XmlElement object.
   XmlElement^ xmlDigitalSignature = signedXml->GetXml();
   
   // Save the signed XML document to a file specified
   // using the passed string.
   XmlTextWriter^ xmltw = gcnew XmlTextWriter( XmlSigFileName,gcnew UTF8Encoding(
 false ) );
   xmlDigitalSignature->WriteTo( xmltw );
   xmltw->Close();
}

// Sign an XML file and save the signature in a new file.
public static void SignDetachedResource(String
 uriString, 
    String xmlSigFileName, RSA key, String certificate)
{
    // Create a SignedXml object.
    SignedXml signedXml = new SignedXml();

    // Assign the key to the SignedXml object.
    signedXml.set_SigningKey(key);

    // Create a reference to be signed.
    Reference reference = new Reference();

    // Add the passed URI to the reference object.
    reference.set_Uri(uriString);

    // Add a transformation if the URI is an XML file.
    if (uriString.EndsWith("xml")) {
        reference.AddTransform(new XmlDsigC14NTransform());
    }

    // Add the reference to the SignedXml object.
    signedXml.AddReference(reference);

    // Create a new KeyInfo object.
    KeyInfo keyInfo = new KeyInfo();

    // Load the X509 certificate.
    X509Certificate msCert = 
        X509Certificate.CreateFromCertFile(certificate);

    // Load the certificate into a KeyInfoX509Data object
    // and add it to the KeyInfo object.
    keyInfo.AddClause(new KeyInfoX509Data(msCert));

    // Add the KeyInfo object to the SignedXml object.
    signedXml.set_KeyInfo(keyInfo);

    // Compute the signature.
    signedXml.ComputeSignature();

    // Get the XML representation of the signature and save
    // it to an XmlElement object.
    XmlElement xmlDigitalSignature = signedXml.GetXml();

    // Save the signed XML document to a file specified
    // using the passed string.
    XmlTextWriter xmlTW = 
        new XmlTextWriter(xmlSigFileName, new
 UTF8Encoding(false));

    xmlDigitalSignature.WriteTo(xmlTW);
    xmlTW.Close();
} //SignDetachedResource

例 2

Visual Basic

' Sign an XML file and save the signature in a new file.
Public Shared Sub SignXmlFile(FileName
 As String, SignedFileName As
 String, Key As RSA, Certificate As String)
   ' Create a new XML document.
   Dim doc As New XmlDocument()
   
   ' Format the document to ignore white spaces.
   doc.PreserveWhitespace = False
   
   ' Load the passed XML file using it's name.
   doc.Load(New XmlTextReader(FileName))
   
   ' Create a SignedXml object.
   Dim signedXml As New
 SignedXml(doc)
   
   ' Add the key to the SignedXml document. 
   signedXml.SigningKey = Key
   
   ' Create a reference to be signed.
   Dim reference As New
 Reference()
   reference.Uri = ""
   
   ' Add an enveloped transformation to the reference.
   Dim env As New XmlDsigEnvelopedSignatureTransform()
   reference.AddTransform(env)
   
   ' Add the reference to the SignedXml object.
   signedXml.AddReference(reference)
   
   ' Create a new KeyInfo object.
   Dim keyInfo As New KeyInfo()
   
   ' Load the X509 certificate.
   Dim MSCert As X509Certificate = X509Certificate.CreateFromCertFile(Certificate)
   
   ' Load the certificate into a KeyInfoX509Data object
   ' and add it to the KeyInfo object.
   keyInfo.AddClause(New KeyInfoX509Data(MSCert))
   
   ' Add the KeyInfo object to the SignedXml object.
   signedXml.KeyInfo = keyInfo
   
   ' Compute the signature.
   signedXml.ComputeSignature()
   
   ' Get the XML representation of the signature and save
   ' it to an XmlElement object.
   Dim xmlDigitalSignature As XmlElement =
 signedXml.GetXml()
   
   ' Append the element to the XML document.
   doc.DocumentElement.AppendChild(doc.ImportNode(xmlDigitalSignature, True))
   
   
   If TypeOf doc.FirstChild Is
 XmlDeclaration Then
      doc.RemoveChild(doc.FirstChild)
   End If
   
   ' Save the signed XML document to a file specified
   ' using the passed string.
   Dim xmltw As New XmlTextWriter(SignedFileName,
 New UTF8Encoding(False))
   doc.WriteTo(xmltw)
   xmltw.Close()
End Sub

// Sign an XML file and save the signature in a new file.
public static void SignXmlFile(string
 FileName, string SignedFileName, RSA Key, string
 Certificate)
{
    // Create a new XML document.
    XmlDocument doc = new XmlDocument();

    // Format the document to ignore white spaces.
    doc.PreserveWhitespace = false;

    // Load the passed XML file using it's name.
    doc.Load(new XmlTextReader(FileName));

    // Create a SignedXml object.
    SignedXml signedXml = new SignedXml(doc);

    // Add the key to the SignedXml document. 
    signedXml.SigningKey = Key;

    // Create a reference to be signed.
    Reference reference = new Reference();
    reference.Uri = "";

    // Add an enveloped transformation to the reference.
    XmlDsigEnvelopedSignatureTransform env = new XmlDsigEnvelopedSignatureTransform();
    reference.AddTransform(env);

    // Add the reference to the SignedXml object.
    signedXml.AddReference(reference);

    // Create a new KeyInfo object.
    KeyInfo keyInfo = new KeyInfo();

    // Load the X509 certificate.
    X509Certificate MSCert = X509Certificate.CreateFromCertFile(Certificate);
 
    // Load the certificate into a KeyInfoX509Data object
    // and add it to the KeyInfo object.
    keyInfo.AddClause(new KeyInfoX509Data(MSCert));
  
    // Add the KeyInfo object to the SignedXml object.
    signedXml.KeyInfo = keyInfo;

    // Compute the signature.
    signedXml.ComputeSignature();

    // Get the XML representation of the signature and save
    // it to an XmlElement object.
    XmlElement xmlDigitalSignature = signedXml.GetXml();

    // Append the element to the XML document.
    doc.DocumentElement.AppendChild(doc.ImportNode(xmlDigitalSignature, true));
    
    
    if (doc.FirstChild is XmlDeclaration)  
    {
        doc.RemoveChild(doc.FirstChild);
    }

    // Save the signed XML document to a file specified
    // using the passed string.
    XmlTextWriter xmltw = new XmlTextWriter(SignedFileName, new
 UTF8Encoding(false));
    doc.WriteTo(xmltw);
    xmltw.Close();
}

C++

// Sign an XML file and save the signature in a new file.
void SignXmlFile( String^ FileName, String^ SignedFileName, RSA^
 Key, String^ Certificate )
{
   
   // Create a new XML document.
   XmlDocument^ doc = gcnew XmlDocument;
   
   // Format the document to ignore white spaces.
   doc->PreserveWhitespace = false;
   
   // Load the passed XML file using its name.
   doc->Load( gcnew XmlTextReader( FileName ) );
   
   // Create a SignedXml object.
   SignedXml^ signedXml = gcnew SignedXml( doc );
   
   // Add the key to the SignedXml document. 
   signedXml->SigningKey = Key;
   
   // Create a reference to be signed.
   Reference^ reference = gcnew Reference;
   reference->Uri = "";
   
   // Add an enveloped transformation to the reference.
   XmlDsigEnvelopedSignatureTransform^ env = gcnew XmlDsigEnvelopedSignatureTransform;
   reference->AddTransform( env );
   
   // Add the reference to the SignedXml object.
   signedXml->AddReference( reference );
   
   // Create a new KeyInfo object.
   KeyInfo^ keyInfo = gcnew KeyInfo;
   
   // Load the X509 certificate.
   X509Certificate^ MSCert = X509Certificate::CreateFromCertFile( Certificate );
   
   // Load the certificate into a KeyInfoX509Data object
   // and add it to the KeyInfo object.
   keyInfo->AddClause( gcnew KeyInfoX509Data( MSCert ) );
   
   // Add the KeyInfo object to the SignedXml object.
   signedXml->KeyInfo = keyInfo;
   
   // Compute the signature.
   signedXml->ComputeSignature();
   
   // Get the XML representation of the signature and save
   // it to an XmlElement object.
   XmlElement^ xmlDigitalSignature = signedXml->GetXml();
   
   // Append the element to the XML document.
   doc->DocumentElement->AppendChild( doc->ImportNode( xmlDigitalSignature,
 true ) );
   if ( (doc->FirstChild)->GetType() == XmlDeclaration::typeid
 )
   {
      doc->RemoveChild( doc->FirstChild );
   }

   
   // Save the signed XML document to a file specified
   // using the passed string.
   XmlTextWriter^ xmltw = gcnew XmlTextWriter( SignedFileName,gcnew UTF8Encoding(
 false ) );
   doc->WriteTo( xmltw );
   xmltw->Close();
}

プラットフォーム

バージョン情報

.NET Framework
サポート対象 : 2.0、1.1、1.0

参照

関連項目
KeyInfoX509Data クラス
KeyInfoX509Data メンバ
System.Security.Cryptography.Xml 名前空間

KeyInfoX509Data コンストラクタ

KeyInfoX509Data クラスの新しいインスタンスを初期化します。
オーバーロードの一覧

名前	説明
KeyInfoX509Data ()	KeyInfoX509Data クラスの新しいインスタンスを初期化します。
KeyInfoX509Data (Byte[])	指定した X.509v3 証明書の ASN.1 DER エンコーディングからKeyInfoX509Data クラスの新しいインスタンスを初期化します。
KeyInfoX509Data (X509Certificate)	指定した X.509v3 証明書から KeyInfoX509Data クラスの新しいインスタンスを初期化します。
KeyInfoX509Data (X509Certificate, X509IncludeOption)	指定した X.509v3 証明書から KeyInfoX509Data クラスの新しいインスタンスを初期化します。

参照

KeyInfoX509Data コンストラクタ (X509Certificate, X509IncludeOption)

メモ : このコンストラクタは、.NET Framework version 2.0 で新しく追加されたものです。

指定した X.509v3 証明書から KeyInfoX509Data クラスの新しいインスタンスを初期化します。

名前空間: System.Security.Cryptography.Xml
アセンブリ: System.Security (system.security.dll 内)
構文

Visual Basic (宣言)

Public Sub New ( _
    cert As X509Certificate, _
    includeOption As X509IncludeOption _
)

Visual Basic (使用法)

Dim cert As X509Certificate
Dim includeOption As X509IncludeOption

Dim instance As New KeyInfoX509Data(cert,
 includeOption)

public KeyInfoX509Data (
    X509Certificate cert,
    X509IncludeOption includeOption
)

C++

public:
KeyInfoX509Data (
    X509Certificate^ cert, 
    X509IncludeOption includeOption
)

public KeyInfoX509Data (
    X509Certificate cert, 
    X509IncludeOption includeOption
)

JScript

public function KeyInfoX509Data (
    cert : X509Certificate, 
    includeOption : X509IncludeOption
)

パラメータ

cert: KeyInfoX509Data の新しいインスタンスを初期化するために使用する X509Certificateオブジェクト。

includeOption: どれだけの証明書チェーンを含めるかを指定する、いずれかの X509IncludeOption 値。

例外

例外の種類	条件
ArgumentNullException	cert パラメータが null 参照 (Visual Basic では Nothing) です。

使用例

XML ドキュメントの署名および検査時に KeyInfoX509Data オブジェクトを使用する方法を次のコード例に示します。

Visual Basic

'
' This example signs an XML file using an
' envelope signature. It then verifies the 
' signed XML.
'
' You must have a certificate with a subject name
' of "CN=XMLDSIG_Test" in the "My" certificate store.
 
'
' Run the following command to create a certificate
' and place it in the store.
' makecert -r -pe -n "CN=XMLDSIG_Test" -b 01/01/2005 -e 01/01/2010
 -sky signing -ss my
Imports System
Imports System.Security.Cryptography
Imports System.Security.Cryptography.Xml
Imports System.Security.Cryptography.X509Certificates
Imports System.Text
Imports System.Xml



Module SignVerifyEnvelope


    Sub Main(ByVal args() As
 String)

        Dim Certificate As String
 = "CN=XMLDSIG_Test"

        Try

            ' Create an XML file to sign.
            CreateSomeXml("Example.xml")
            Console.WriteLine("New XML file created.")

            ' Sign the XML that was just created and save it in a 
            ' new file.
            SignXmlFile("Example.xml", "SignedExample.xml",
 Certificate)
            Console.WriteLine("XML file signed.")

            If VerifyXmlFile("SignedExample.xml",
 Certificate) Then
                Console.WriteLine("The XML signature is valid.")
            Else
                Console.WriteLine("The XML signature is not valid.")
            End If
        Catch e As CryptographicException
            Console.WriteLine(e.Message)
        End Try

    End Sub


    ' Sign an XML file and save the signature in a new file.
    Sub SignXmlFile(ByVal FileName As
 String, ByVal SignedFileName As
 String, ByVal SubjectName As String)
        If Nothing = FileName Then
            Throw New ArgumentNullException("FileName")
        End If
        If Nothing = SignedFileName Then
            Throw New ArgumentNullException("SignedFileName")
        End If
        If Nothing = SubjectName Then
            Throw New ArgumentNullException("SubjectName")
        End If
        ' Load the certificate from the certificate store.
        Dim cert As X509Certificate2 = GetCertificateBySubject(SubjectName)

        ' Create a new XML document.
        Dim doc As New XmlDocument()

        ' Format the document to ignore white spaces.
        doc.PreserveWhitespace = False

        ' Load the passed XML file using it's name.
        doc.Load(New XmlTextReader(FileName))

        ' Create a SignedXml object.
        Dim signedXml As New
 SignedXml(doc)

        ' Add the key to the SignedXml document. 
        signedXml.SigningKey = cert.PrivateKey

        ' Create a reference to be signed.
        Dim reference As New
 Reference()
        reference.Uri = ""

        ' Add an enveloped transformation to the reference.
        Dim env As New XmlDsigEnvelopedSignatureTransform()
        reference.AddTransform(env)

        ' Add the reference to the SignedXml object.
        signedXml.AddReference(reference)

        ' Create a new KeyInfo object.
        Dim keyInfo As New
 KeyInfo()

        ' Load the certificate into a KeyInfoX509Data object
        ' and add it to the KeyInfo object.
        Dim X509KeyInfo As New
 KeyInfoX509Data(cert, X509IncludeOption.WholeChain)

        keyInfo.AddClause(X509KeyInfo)

        ' Add the KeyInfo object to the SignedXml object.
        signedXml.KeyInfo = keyInfo

        ' Compute the signature.
        signedXml.ComputeSignature()

        ' Get the XML representation of the signature and save
        ' it to an XmlElement object.
        Dim xmlDigitalSignature As XmlElement
 = signedXml.GetXml()

        ' Append the element to the XML document.
        doc.DocumentElement.AppendChild(doc.ImportNode(xmlDigitalSignature, True))


        If TypeOf doc.FirstChild Is
 XmlDeclaration Then
            doc.RemoveChild(doc.FirstChild)
        End If

        ' Save the signed XML document to a file specified
        ' using the passed string.
        Dim xmltw As New
 XmlTextWriter(SignedFileName, New UTF8Encoding(False))
        Try
            doc.WriteTo(xmltw)

        Finally
            xmltw.Close()
        End Try

    End Sub

    ' Verify the signature of an XML file against an asymetric 
    ' algorithm and return the result.
    Function VerifyXmlFile(ByVal FileName As
 String, ByVal CertificateSubject As
 String) As [Boolean]
        ' Check the args.
        If Nothing = FileName Then
            Throw New ArgumentNullException("FileName")
        End If
        If Nothing = CertificateSubject Then
            Throw New ArgumentNullException("CertificateSubject")
        End If
        ' Load the certificate from the store.
        Dim cert As X509Certificate2 = GetCertificateBySubject(CertificateSubject)

        ' Create a new XML document.
        Dim xmlDocument As New
 XmlDocument()

        ' Load the passed XML file into the document. 
        xmlDocument.Load(FileName)

        ' Create a new SignedXml object and pass it
        ' the XML document class.
        Dim signedXml As New
 SignedXml(xmlDocument)

        ' Find the "Signature" node and create a new
        ' XmlNodeList object.
        Dim nodeList As XmlNodeList = xmlDocument.GetElementsByTagName("Signature")

        ' Load the signature node.
        signedXml.LoadXml(CType(nodeList(0), XmlElement))

        ' Check the signature and return the result.
        Return signedXml.CheckSignature(cert, True)

    End Function



    Function GetCertificateBySubject(ByVal
 CertificateSubject As String) As
 X509Certificate2
        ' Check the args.
        If Nothing = CertificateSubject Then
            Throw New ArgumentNullException("CertificateSubject")
        End If

        ' Load the certificate from the certificate store.
        Dim cert As X509Certificate2 = Nothing

        Dim store As New
 X509Store("My", StoreLocation.CurrentUser)

        Try
            ' Open the store.
            store.Open(OpenFlags.ReadOnly Or OpenFlags.OpenExistingOnly)

            ' Get the certs from the store.
            Dim CertCol As X509Certificate2Collection
 = store.Certificates

            ' Find the certificate with the specified subject.
            Dim c As X509Certificate2
            For Each c In
 CertCol
                If c.Subject = CertificateSubject Then
                    cert = c
                    Exit For
                End If
            Next c

            ' Throw an exception of the certificate was not found.
            If cert Is Nothing
 Then
                Throw New CryptographicException("The
 certificate could not be found.")
            End If
        Finally
            ' Close the store even if an exception was thrown.
            store.Close()
        End Try

        Return cert

    End Function


    ' Create example data to sign.
    Sub CreateSomeXml(ByVal FileName As
 String)
        ' Check the args.
        If Nothing = FileName Then
            Throw New ArgumentNullException("FileName")
        End If
        ' Create a new XmlDocument object.
        Dim document As New
 XmlDocument()

        ' Create a new XmlNode object.
        Dim node As XmlNode = document.CreateNode(XmlNodeType.Element,
 "", "MyElement",
 "samples")

        ' Add some text to the node.
        node.InnerText = "Example text to be signed."

        ' Append the node to the document.
        document.AppendChild(node)

        ' Save the XML document to the file name specified.
        Dim xmltw As New
 XmlTextWriter(FileName, New UTF8Encoding(False))
        Try
            document.WriteTo(xmltw)

        Finally
            xmltw.Close()
        End Try

    End Sub
End Module
' This code example displays the following to the console:
'
' New XML file created.
' XML file signed.
' The XML signature is valid.

//
// This example signs an XML file using an
// envelope signature. It then verifies the 
// signed XML.
//
// You must have a certificate with a subject name
// of "CN=XMLDSIG_Test" in the "My" certificate
 store. 
//
// Run the following command to create a certificate
// and place it in the store.
// makecert -r -pe -n "CN=XMLDSIG_Test" -b 01/01/2005 -e 01/01/2010
 -sky signing -ss my

using System;
using System.Security.Cryptography;
using System.Security.Cryptography.Xml;
using System.Security.Cryptography.X509Certificates;
using System.Text;
using System.Xml;

public class SignVerifyEnvelope
{

    public static void Main(String[]
 args)
    {

        string Certificate = "CN=XMLDSIG_Test";

        try
        {

            // Create an XML file to sign.
            CreateSomeXml("Example.xml");
            Console.WriteLine("New XML file created.");

            // Sign the XML that was just created and save it in a 
            // new file.
            SignXmlFile("Example.xml", "SignedExample.xml", Certificate);
            Console.WriteLine("XML file signed.");

            if (VerifyXmlFile("SignedExample.xml", Certificate))
            {
                Console.WriteLine("The XML signature is valid.");
            }
            else
            {
                Console.WriteLine("The XML signature is not valid.");
            }
        }
        catch (CryptographicException e)
        {
            Console.WriteLine(e.Message);
        }
    }

    // Sign an XML file and save the signature in a new file.
    public static void SignXmlFile(string
 FileName, string SignedFileName, string SubjectName)
    {
        if (null == FileName)
            throw new ArgumentNullException("FileName");
        if (null == SignedFileName)
            throw new ArgumentNullException("SignedFileName");
        if (null == SubjectName)
            throw new ArgumentNullException("SubjectName");

        // Load the certificate from the certificate store.
        X509Certificate2 cert = GetCertificateBySubject(SubjectName);

        // Create a new XML document.
        XmlDocument doc = new XmlDocument();

        // Format the document to ignore white spaces.
        doc.PreserveWhitespace = false;

        // Load the passed XML file using it's name.
        doc.Load(new XmlTextReader(FileName));

        // Create a SignedXml object.
        SignedXml signedXml = new SignedXml(doc);

        // Add the key to the SignedXml document. 
        signedXml.SigningKey = cert.PrivateKey;

        // Create a reference to be signed.
        Reference reference = new Reference();
        reference.Uri = "";

        // Add an enveloped transformation to the reference.
        XmlDsigEnvelopedSignatureTransform env = new XmlDsigEnvelopedSignatureTransform();
        reference.AddTransform(env);

        // Add the reference to the SignedXml object.
        signedXml.AddReference(reference);

        // Create a new KeyInfo object.
        KeyInfo keyInfo = new KeyInfo();

        // Load the certificate into a KeyInfoX509Data object
        // and add it to the KeyInfo object.
        KeyInfoX509Data X509KeyInfo = new KeyInfoX509Data(cert,
 X509IncludeOption.WholeChain);

        keyInfo.AddClause(X509KeyInfo);

        // Add the KeyInfo object to the SignedXml object.
        signedXml.KeyInfo = keyInfo;

        // Compute the signature.
        signedXml.ComputeSignature();

        // Get the XML representation of the signature and save
        // it to an XmlElement object.
        XmlElement xmlDigitalSignature = signedXml.GetXml();

        // Append the element to the XML document.
        doc.DocumentElement.AppendChild(doc.ImportNode(xmlDigitalSignature, true));


        if (doc.FirstChild is XmlDeclaration)
        {
            doc.RemoveChild(doc.FirstChild);
        }

        // Save the signed XML document to a file specified
        // using the passed string.
        using (XmlTextWriter xmltw = new XmlTextWriter(SignedFileName,
 new UTF8Encoding(false)))
        {
            doc.WriteTo(xmltw);
            xmltw.Close();
        }

    }

    // Verify the signature of an XML file against an asymetric 
    // algorithm and return the result.
    public static Boolean VerifyXmlFile(String
 FileName, String CertificateSubject)
    {
        // Check the args.
        if (null == FileName)
            throw new ArgumentNullException("FileName");
        if (null == CertificateSubject)
            throw new ArgumentNullException("CertificateSubject");

        // Load the certificate from the store.
        X509Certificate2 cert = GetCertificateBySubject(CertificateSubject);

        // Create a new XML document.
        XmlDocument xmlDocument = new XmlDocument();

        // Load the passed XML file into the document. 
        xmlDocument.Load(FileName);

        // Create a new SignedXml object and pass it
        // the XML document class.
        SignedXml signedXml = new SignedXml(xmlDocument);

        // Find the "Signature" node and create a new
        // XmlNodeList object.
        XmlNodeList nodeList = xmlDocument.GetElementsByTagName("Signature");

        // Load the signature node.
        signedXml.LoadXml((XmlElement)nodeList[0]);

        // Check the signature and return the result.
        return signedXml.CheckSignature(cert, true);

    }


    public static X509Certificate2 GetCertificateBySubject(string
 CertificateSubject)
    {
        // Check the args.
        if (null == CertificateSubject)
            throw new ArgumentNullException("CertificateSubject");


        // Load the certificate from the certificate store.
        X509Certificate2 cert = null;

        X509Store store = new X509Store("My", StoreLocation.CurrentUser);

        try
        {
            // Open the store.
            store.Open(OpenFlags.ReadOnly | OpenFlags.OpenExistingOnly);

            // Get the certs from the store.
            X509Certificate2Collection CertCol = store.Certificates;

            // Find the certificate with the specified subject.
            foreach (X509Certificate2 c in
 CertCol)
            {
                if (c.Subject == CertificateSubject)
                {
                    cert = c;
                    break;
                }
            }

            // Throw an exception of the certificate was not found.
            if (cert == null)
            {
                throw new CryptographicException("The certificate
 could not be found.");
            }
        }
        finally
        {
            // Close the store even if an exception was thrown.
            store.Close();
        }

        return cert;
    }

    // Create example data to sign.
    public static void CreateSomeXml(string
 FileName)
    {
        // Check the args.
        if (null == FileName)
            throw new ArgumentNullException("FileName");

        // Create a new XmlDocument object.
        XmlDocument document = new XmlDocument();

        // Create a new XmlNode object.
        XmlNode node = document.CreateNode(XmlNodeType.Element, "", "MyElement",
 "samples");

        // Add some text to the node.
        node.InnerText = "Example text to be signed.";

        // Append the node to the document.
        document.AppendChild(node);

        // Save the XML document to the file name specified.
        using (XmlTextWriter xmltw = new XmlTextWriter(FileName,
 new UTF8Encoding(false)))
        {
            document.WriteTo(xmltw);

            xmltw.Close();
        }
    }
}
// This code example displays the following to the console:
//
// New XML file created.
// XML file signed.
// The XML signature is valid.

プラットフォーム

バージョン情報

.NET Framework
サポート対象 : 2.0

参照

関連項目
KeyInfoX509Data クラス
KeyInfoX509Data メンバ
System.Security.Cryptography.Xml 名前空間

KeyInfoX509Data プロパティ

パブリックプロパティパブリックプロパティ

	名前	説明
	Certificates	KeyInfoX509Data オブジェクトに格納されている X.509v3 証明書のリストを取得します。
	CRL	KeyInfoX509Data オブジェクト内に格納されている証明書失効リスト (CRL: Certificate Revocation List) を取得または設定します。
	IssuerSerials	発行者名とシリアル番号の組み合わせを表す X509IssuerSerial 構造体のリストを取得します。
	SubjectKeyIds	KeyInfoX509Data オブジェクトに格納されているサブジェクトキー識別子 (SKI) のリストを取得します。
	SubjectNames	KeyInfoX509Data オブジェクトに格納されているエンティティのサブジェクト名のリストを取得します。

参照

KeyInfoX509Data メソッド

パブリックメソッドパブリックメソッド

( プロテクトメソッドも参照)

	名前	説明
	AddCertificate	指定した X.509v3 証明書を KeyInfoX509Data に追加します。
	AddIssuerSerial	指定した発行者名とシリアル番号の組み合わせを KeyInfoX509Data オブジェクトに追加します。
	AddSubjectKeyId	オーバーロードされます。サブジェクトキー識別子 (SKI) を KeyInfoX509Data オブジェクトに追加します。
	AddSubjectName	X.509v3 証明書が発行されたエンティティのサブジェクト名を KeyInfoX509Data オブジェクトに追加します。
	Equals	オーバーロードされます。 2 つの Object インスタンスが等しいかどうかを判断します。 ( Object から継承されます。)
	GetHashCode	特定の型のハッシュ関数として機能します。GetHashCode は、ハッシュアルゴリズムや、ハッシュテーブルのようなデータ構造での使用に適しています。 ( Object から継承されます。)
	GetType	現在のインスタンスの Type を取得します。 ( Object から継承されます。)
	GetXml	オーバーライドされます。 KeyInfoX509Data オブジェクトの XML 表現を返します。
	LoadXml	オーバーライドされます。入力 XmlElement オブジェクトを解析し、一致させる KeyInfoX509Data オブジェクトの内部状態を設定します。
	ReferenceEquals	指定した複数の Object インスタンスが同一かどうかを判断します。 ( Object から継承されます。)
	ToString	現在の Object を表す String を返します。 ( Object から継承されます。)

プロテクトメソッド

	名前	説明
	Finalize	Object がガベージコレクションにより収集される前に、その Object がリソースを解放し、その他のクリーンアップ操作を実行できるようにします。 ( Object から継承されます。)
	MemberwiseClone	現在の Object の簡易コピーを作成します。 ( Object から継承されます。)

参照

KeyInfoX509Data メンバ

XMLDSIG または XML Encryption <KeyInfo> 要素の <X509Data> サブ要素を表します。

KeyInfoX509Data データ型で公開されるメンバを以下の表に示します。

パブリックコンストラクタ

	名前	説明
	KeyInfoX509Data	オーバーロードされます。 KeyInfoX509Data クラスの新しいインスタンスを初期化します。

パブリックプロパティ

	名前	説明
	Certificates	KeyInfoX509Data オブジェクトに格納されている X.509v3 証明書のリストを取得します。
	CRL	KeyInfoX509Data オブジェクト内に格納されている証明書失効リスト (CRL: Certificate Revocation List) を取得または設定します。
	IssuerSerials	発行者名とシリアル番号の組み合わせを表す X509IssuerSerial 構造体のリストを取得します。
	SubjectKeyIds	KeyInfoX509Data オブジェクトに格納されているサブジェクトキー識別子 (SKI) のリストを取得します。
	SubjectNames	KeyInfoX509Data オブジェクトに格納されているエンティティのサブジェクト名のリストを取得します。

パブリックメソッド

( プロテクトメソッドも参照)

	名前	説明
	AddCertificate	指定した X.509v3 証明書を KeyInfoX509Data に追加します。
	AddIssuerSerial	指定した発行者名とシリアル番号の組み合わせを KeyInfoX509Data オブジェクトに追加します。
	AddSubjectKeyId	オーバーロードされます。サブジェクトキー識別子 (SKI) を KeyInfoX509Data オブジェクトに追加します。
	AddSubjectName	X.509v3 証明書が発行されたエンティティのサブジェクト名を KeyInfoX509Data オブジェクトに追加します。
	Equals	オーバーロードされます。 2 つの Object インスタンスが等しいかどうかを判断します。 (Object から継承されます。)
	GetHashCode	特定の型のハッシュ関数として機能します。GetHashCode は、ハッシュアルゴリズムや、ハッシュテーブルのようなデータ構造での使用に適しています。 (Object から継承されます。)
	GetType	現在のインスタンスの Type を取得します。 (Object から継承されます。)
	GetXml	オーバーライドされます。 KeyInfoX509Data オブジェクトの XML 表現を返します。
	LoadXml	オーバーライドされます。入力 XmlElement オブジェクトを解析し、一致させる KeyInfoX509Data オブジェクトの内部状態を設定します。
	ReferenceEquals	指定した複数の Object インスタンスが同一かどうかを判断します。 (Object から継承されます。)
	ToString	現在の Object を表す String を返します。 (Object から継承されます。)

プロテクトメソッド

	名前	説明
	Finalize	Object がガベージコレクションにより収集される前に、その Object がリソースを解放し、その他のクリーンアップ操作を実行できるようにします。 (Object から継承されます。)
	MemberwiseClone	現在の Object の簡易コピーを作成します。 (Object から継承されます。)

参照

KeyInfoX509Dataとは？わかりやすく解説

KeyInfoX509Data クラス

KeyInfoX509Data コンストラクタ ()

KeyInfoX509Data コンストラクタ (Byte[])

KeyInfoX509Data コンストラクタ (X509Certificate)

KeyInfoX509Data コンストラクタ

関連項目

KeyInfoX509Data コンストラクタ (X509Certificate, X509IncludeOption)

KeyInfoX509Data プロパティ

関連項目

KeyInfoX509Data メソッド

関連項目

KeyInfoX509Data メンバ

関連項目

「KeyInfoX509Data」の関連用語


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KeyInfoX509Dataとは？ わかりやすく解説

KeyInfoX509Data クラス

KeyInfoX509Data コンストラクタ ()

KeyInfoX509Data コンストラクタ (Byte[])

KeyInfoX509Data コンストラクタ (X509Certificate)

KeyInfoX509Data コンストラクタ

関連項目

KeyInfoX509Data コンストラクタ (X509Certificate, X509IncludeOption)

KeyInfoX509Data プロパティ

関連項目

KeyInfoX509Data メソッド

関連項目

KeyInfoX509Data メンバ

関連項目

急上昇のことば

「KeyInfoX509Data」の関連用語

KeyInfoX509Dataとは？わかりやすく解説