signatureとは？わかりやすく解説

辞書 類語・対義語辞典 英和・和英辞典 日中中日辞典 日韓韓日辞典 古語辞典

その他の辞書▼
- 手話辞典
- インドネシア語辞典
- タイ語辞典
- ベトナム語辞典

Weblio 辞書ヘルプ

556の専門辞書や国語辞典百科事典から一度に検索!

無料の翻訳ならWeblio翻訳！

初めての方へ参加元一覧

Weblio 辞書 > コンピュータ > .NET Framework クラスライブラリリファレンス > signatureの意味・解説

すべての辞書から再検索する

.NET Framework クラスライブラリリファレンス

索引トップ用語の索引ランキング

Signature クラス

XML 署名の <Signature> 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 Signature

Visual Basic (使用法)

Dim instance As Signature

public class Signature

public ref class Signature

public class Signature

public class Signature

Signature クラスは、XML デジタル署名仕様に定義されている XML 署名の <Signature> 要素を表します。<Signature> 要素は、XML デジタル署名のルート要素です。SignedInfo、SignatureValue、KeyInfo、および ObjectList プロパティは、<Signature> 要素のサブ要素をカプセル化します。

<Signature> 要素の詳細については、www.w3.org/TR/xmldsig-core/ の W3C 仕様を参照してください。

使用例

Signature クラスを SignedXml クラスと共に使用し、エンベロープシグネチャで XML ドキュメントの署名および検証を行うコードの例を次に示します。

' 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.Text
Imports System.Xml



Module SignVerifyEnvelope


    Sub Main(ByVal args() As
 String)
        ' Generate a signing key.
        Dim Key As New RSACryptoServiceProvider()

        Try

            ' Sign an XML file and save the signature to a 
            ' new file.
            SignXmlFile("Test.xml", "SignedExample.xml",
 Key)
            Console.WriteLine("XML file signed.")

            ' Verify the signature of the signed XML.
            Console.WriteLine("Verifying signature...")

            Dim result As Boolean
 = VerifyXmlFile("SignedExample.xml")

            ' Display the results of the signature verification to 
            ' the console.
            If result 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)
        Finally
            ' Clear resources associated with the 
            ' RSACryptoServiceProvider.
            Key.Clear()
        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 Key As RSA)
        ' Check the arguments.  
        If FileName Is Nothing
 Then
            Throw New ArgumentNullException("FileName")
        End If
        If SignedFileName Is Nothing
 Then
            Throw New ArgumentNullException("SignedFileName")
        End If
        If Key Is Nothing
 Then
            Throw New ArgumentNullException("Key")
        End If

        ' 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

        ' Get the signature object from the SignedXml object.
        Dim XMLSignature As Signature = signedXml.Signature

        ' Create a reference to be signed.  Pass "" 
        ' to specify that all of the current XML
        ' document should be signed.
        Dim reference As New
 Reference("")

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

        ' Add the Reference object to the Signature object.
        XMLSignature.SignedInfo.AddReference(reference)

        ' Add an RSAKeyValue KeyInfo (optional; helps recipient find
 key to validate).
        Dim keyInfo As New
 KeyInfo()
        keyInfo.AddClause(New RSAKeyValue(CType(Key, RSA)))

        ' Add the KeyInfo object to the Reference object.
        XMLSignature.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

    ' Verify the signature of an XML file and return the result.
    Function VerifyXmlFile(ByVal Name As
 String) As [Boolean]
        ' Check the arguments.  
        If Name Is Nothing
 Then
            Throw New ArgumentNullException("Name")
        End If
        ' Create a new XML document.
        Dim xmlDocument As New
 XmlDocument()

        ' Format using white spaces.
        xmlDocument.PreserveWhitespace = True

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

        ' 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()

    End Function
End Module

//
// 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.Text;
using System.Xml;

public class SignVerifyEnvelope
{

    public static void Main(String[]
 args)
    {
        // Generate a signing key.
       RSACryptoServiceProvider Key = new RSACryptoServiceProvider();

       try
       {

           // Sign an XML file and save the signature to a 
           // new file.
           SignXmlFile("Test.xml", "SignedExample.xml", Key);
           Console.WriteLine("XML file signed.");

           // Verify the signature of the signed XML.
           Console.WriteLine("Verifying signature...");

           bool result = VerifyXmlFile("SignedExample.xml");

           // Display the results of the signature verification to 
           // the console.
           if (result)
           {
               Console.WriteLine("The XML signature is valid.");
           }
           else
           {
               Console.WriteLine("The XML signature is not valid.");
           }
       }
       catch (CryptographicException e)
       {
           Console.WriteLine(e.Message);
       }
       finally
       {
           // Clear resources associated with the 
           // RSACryptoServiceProvider.
           Key.Clear();
       }
   }

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


        // 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;

        // Get the signature object from the SignedXml object.
        Signature XMLSignature = signedXml.Signature;

        // Create a reference to be signed.  Pass "" 
        // to specify that all of the current XML
        // document should be signed.
        Reference reference = new Reference("");

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

        // Add the Reference object to the Signature object.
        XMLSignature.SignedInfo.AddReference(reference);

        // Add an RSAKeyValue KeyInfo (optional; helps recipient find
 key to validate).
        KeyInfo keyInfo = new KeyInfo();
        keyInfo.AddClause(new RSAKeyValue((RSA)Key));

        // Add the KeyInfo object to the Reference object.
        XMLSignature.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();
    }
    // Verify the signature of an XML file and return the result.
    public static Boolean VerifyXmlFile(String
 Name)
    {
        // Check the arguments.  
        if (Name == null)
            throw new ArgumentNullException("Name");

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

        // Format using white spaces.
        xmlDocument.PreserveWhitespace = true;

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

        // 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();
    }
}

//
// This example signs an XML file using an
// envelope signature. It then verifies the 
// signed XML.
//
#using <System.Xml.dll>
#using <System.Security.dll>
#using <System.dll>

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

// Sign an XML file and save the signature in a new file.
static void SignXmlFile( String^ FileName,
 String^ SignedFileName, RSA^ Key )
{
   
   // Check the arguments.  
   if ( FileName == nullptr )
      throw gcnew ArgumentNullException( L"FileName" );

   if ( SignedFileName == nullptr )
      throw gcnew ArgumentNullException( L"SignedFileName" );

   if ( Key == nullptr )
      throw gcnew ArgumentNullException( L"Key" );

   
   // 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 it's 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;
   
   // Get the signature object from the SignedXml object.
   Signature^ XMLSignature = signedXml->Signature;
   
   // Create a reference to be signed.  Pass "" 
   // to specify that all of the current XML
   // document should be signed.
   Reference^ reference = gcnew Reference( L"" );
   
   // Add an enveloped transformation to the reference.
   XmlDsigEnvelopedSignatureTransform^ env = gcnew XmlDsigEnvelopedSignatureTransform;
   reference->AddTransform( env );
   
   // Add the Reference object to the Signature object.
   XMLSignature->SignedInfo->AddReference( reference );
   
   // Add an RSAKeyValue KeyInfo (optional; helps recipient find key
 to validate).
   KeyInfo^ keyInfo = gcnew KeyInfo;
   keyInfo->AddClause( gcnew RSAKeyValue( dynamic_cast<RSA^>(Key) ) );
   
   // Add the KeyInfo object to the Reference object.
   XMLSignature->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 ( dynamic_cast<XmlDeclaration^>(doc->FirstChild)
 )
   {
      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();
}


// Verify the signature of an XML file and return the result.
static Boolean VerifyXmlFile( String^ Name )
{
   
   // Check the arguments.  
   if ( Name == nullptr )
      throw gcnew ArgumentNullException( L"Name" );

   
   // Create a new XML document.
   XmlDocument^ xmlDocument = gcnew XmlDocument;
   
   // Format using white spaces.
   xmlDocument->PreserveWhitespace = true;
   
   // Load the passed XML file into the document. 
   xmlDocument->Load( Name );
   
   // Create a new SignedXml object and pass it
   // the XML document class.
   SignedXml^ signedXml = gcnew SignedXml( xmlDocument );
   
   // Find the "Signature" node and create a new
   // XmlNodeList object.
   XmlNodeList^ nodeList = xmlDocument->GetElementsByTagName( L"Signature"
 );
   
   // Load the signature node.
   signedXml->LoadXml( dynamic_cast<XmlElement^>(nodeList->Item( 0 ))
 );
   
   // Check the signature and return the result.
   return signedXml->CheckSignature();
}

int main()
{
   
   // Generate a signing key.
   RSACryptoServiceProvider^ Key = gcnew RSACryptoServiceProvider;
   try
   {
      
      // Sign an XML file and save the signature to a 
      // new file.
      SignXmlFile( L"Test.xml", L"SignedExample.xml", Key );
      Console::WriteLine( L"XML file signed." );
      
      // Verify the signature of the signed XML.
      Console::WriteLine( L"Verifying signature..." );
      bool result = VerifyXmlFile( L"SignedExample.xml"
 );
      
      // Display the results of the signature verification to 
      // the console.
      if ( result )
      {
         Console::WriteLine( L"The XML signature is valid." );
      }
      else
      {
         Console::WriteLine( L"The XML signature is not valid." );
      }
   }
   catch ( CryptographicException^ e ) 
   {
      Console::WriteLine( e->Message );
   }
   finally
   {
      
      // Clear resources associated with the 
      // RSACryptoServiceProvider.
      Key->Clear();
   }

   return 1;
}

Signature クラスを SignedXml クラスと共に使用し、デタッチシグネチャで XML ドキュメントの署名および検証を行うコードの例を次に示します。

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



Module SignVerifyEnvelope


    Sub Main(ByVal args() As
 String)
        ' Generate a signing key.
        Dim Key As New RSACryptoServiceProvider()

        Try

            ' Sign the detached resource and save the signature in an
 XML file.
            SignDetachedResource("http://www.microsoft.com",
 "SignedExample.xml", Key)

            Console.WriteLine("XML file signed.")

            ' Verify the signature of the signed XML.
            Console.WriteLine("Verifying signature...")

            Dim result As Boolean
 = VerifyXmlFile("SignedExample.xml")

            ' Display the results of the signature verification to \
            ' the console.
            If result 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)
        Finally
            ' Clear resources associated with the 
            ' RSACryptoServiceProvider.
            Key.Clear()
        End Try

    End Sub


    ' Sign an XML file and save the signature in a new file.
    Sub SignDetachedResource(ByVal URIString
 As String, ByVal XmlSigFileName
 As String, ByVal Key As RSA)
        ' Check the arguments.  
        If URIString Is Nothing
 Then
            Throw New ArgumentNullException("URIString")
        End If
        If XmlSigFileName Is Nothing
 Then
            Throw New ArgumentNullException("XmlSigFileName")
        End If
        If Key Is Nothing
 Then
            Throw New ArgumentNullException("Key")
        End If
        ' Create a SignedXml object.
        Dim signedXml As New
 SignedXml()

        ' Assign the key to the SignedXml object.
        signedXml.SigningKey = Key

        ' Get the signature object from the SignedXml object.
        Dim XMLSignature As Signature = signedXml.Signature

        ' 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 object to the Signature object.
        XMLSignature.SignedInfo.AddReference(reference)

        ' Add an RSAKeyValue KeyInfo (optional; helps recipient find
 key to validate).
        Dim keyInfo As New
 KeyInfo()
        keyInfo.AddClause(New RSAKeyValue(CType(Key, RSA)))

        ' Add the KeyInfo object to the Reference object.
        XMLSignature.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



    ' Verify the signature of an XML file and return the result.
    Function VerifyXmlFile(ByVal Name As
 String) As [Boolean]
        ' Check the arguments.  
        If Name Is Nothing
 Then
            Throw New ArgumentNullException("Name")
        End If
        ' Create a new XML document.
        Dim xmlDocument As New
 XmlDocument()

        ' Format using white spaces.
        xmlDocument.PreserveWhitespace = True

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

        ' 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()

    End Function
End Module

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

public class SignVerifyEnvelope
{

    public static void Main(String[]
 args)
    {
        // Generate a signing key.
       RSACryptoServiceProvider Key = new RSACryptoServiceProvider();

       try
       {

           // Sign the detached resource and save the signature in an
 XML file.
           SignDetachedResource("http://www.microsoft.com",
 "SignedExample.xml", Key);

           Console.WriteLine("XML file signed.");

           // Verify the signature of the signed XML.
           Console.WriteLine("Verifying signature...");

           bool result = VerifyXmlFile("SignedExample.xml");

           // Display the results of the signature verification to \
           // the console.
           if (result)
           {
               Console.WriteLine("The XML signature is valid.");
           }
           else
           {
               Console.WriteLine("The XML signature is not valid.");
           }
       }
       catch (CryptographicException e)
       {
           Console.WriteLine(e.Message);
       }
       finally
       {
           // Clear resources associated with the 
           // RSACryptoServiceProvider.
           Key.Clear();
       }
   }

    // Sign an XML file and save the signature in a new file.
    public static void SignDetachedResource(string
 URIString, string XmlSigFileName, RSA Key)
    {
        // Check the arguments.  
        if (URIString == null)
            throw new ArgumentNullException("URIString");
        if (XmlSigFileName == null)
            throw new ArgumentNullException("XmlSigFileName");
        if (Key == null)
            throw new ArgumentNullException("Key");

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

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

        // Get the signature object from the SignedXml object.
        Signature XMLSignature = signedXml.Signature;

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

        // Add the passed URI to the reference object.
        reference.Uri = URIString;

        // Add the Reference object to the Signature object.
        XMLSignature.SignedInfo.AddReference(reference);

        // Add an RSAKeyValue KeyInfo (optional; helps recipient find
 key to validate).
        KeyInfo keyInfo = new KeyInfo();
        keyInfo.AddClause(new RSAKeyValue((RSA)Key));

        // Add the KeyInfo object to the Reference object.
        XMLSignature.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();
    }


    // Verify the signature of an XML file and return the result.
    public static Boolean VerifyXmlFile(String
 Name)
    {
        // Check the arguments.  
        if (Name == null)
            throw new ArgumentNullException("Name");

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

        // Format using white spaces.
        xmlDocument.PreserveWhitespace = true;

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

        // 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();
    }
}

//
// This example signs a URL using an
// envelope signature. It then verifies the 
// signed XML.
//
#using <System.dll>
#using <System.Xml.dll>
#using <System.Security.dll>

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


namespace Sample
{
    public ref class SignVerifyEnvelope
    {
    public:
        static void Work()
        {
            // Generate a signing key.
            RSACryptoServiceProvider^ key = 
                gcnew RSACryptoServiceProvider();

            try
            {

                // Sign the detached resource and save the 
                // signature in an XML file.
                SignDetachedResource("http://www.microsoft.com"
,
                    "SignedExample.xml", key);

                Console::WriteLine("XML file signed.");

                // Verify the signature of the signed XML.
                Console::WriteLine("Verifying signature...");

                bool result = VerifyXmlFile("SignedExample.xml");

                // Display the results of the signature verification
 
                // to the console.
                if (result)
                {
                    Console::WriteLine("The XML signature"
                        " is valid.");
                }
                else
                {
                    Console::WriteLine("The XML signature"
                        " is not valid.");
                }
                Console::ReadLine();
            }

            catch (CryptographicException^ ex)
            {
                Console::WriteLine(ex->Message);
            }
            finally
            {
                // Clear resources associated with the 
                // RSACryptoServiceProvider.
                key->Clear();
            }
        }


        // Sign an XML file and save the signature in a new file.
        static void SignDetachedResource(String^
 uri, 
            String^ xmlFileName, RSA^ key)
        {
            // Check the arguments.  
            if (uri->Length == 0)
            {
                throw gcnew ArgumentException("uri");
            }
            if (xmlFileName->Length == 0)
            {
                throw gcnew ArgumentException("xmlFileName");
            } 
            if (key->KeySize == 0)
            {
                throw gcnew ArgumentException("key");
            }
            // Create a SignedXml object.
            SignedXml^ signedXml = gcnew SignedXml();

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

            // Get the signature object from the SignedXml object.
            Signature^ xmlSignature = signedXml->Signature;

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

            // Add the passed URI to the reference object.
            reference->Uri = uri;

            // Add the Reference object to the Signature object.
            xmlSignature->SignedInfo->AddReference(reference);

            // Add an RSAKeyValue KeyInfo (optional; helps recipient
            // find key to validate).
            KeyInfo^ keyInfo = gcnew KeyInfo();
            keyInfo->AddClause(
                gcnew RSAKeyValue(key));

            // Add the KeyInfo object to the Reference object.
            xmlSignature->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^ xmlTextWriter = gcnew XmlTextWriter(
                xmlFileName, gcnew UTF8Encoding(false));

            xmlDigitalSignature->WriteTo(xmlTextWriter);
            xmlTextWriter->Close();
        }


        // Verify the signature of an XML file and return the result.
        static Boolean VerifyXmlFile(String^ documentName)
        {
            // Check the arguments.  
            if (documentName->Length == 0)
            {
                throw gcnew ArgumentException("documentName");
            }
            // Create a new XML document.
            XmlDocument^ xmlDocument = gcnew XmlDocument();

            // Format using white spaces.
            xmlDocument->PreserveWhitespace = true;

            // Load the passed XML file into the document. 
            xmlDocument->Load(documentName);

            // Create a new SignedXml object and pass it
            // the XML document class.
            SignedXml^ signedXml = gcnew 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->Item(0));

            // Check the signature and return the result.
            return signedXml->CheckSignature();
        }
    };
}


int main()
{
    Sample::SignVerifyEnvelope::Work();
}

継承階層

System.Object
System.Security.Cryptography.Xml.Signature

スレッドセーフ

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

プラットフォーム

バージョン情報

バージョン情報

.NET Framework
サポート対象 : 2.0、1.1、1.0

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

Signature コンストラクタ

Signature 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 Signature

public Signature ()

public:
Signature ()

public Signature ()

public function Signature ()

使用例

Signature クラスを SignedXml クラスと共に使用し、エンベロープシグネチャで XML ドキュメントの署名および検証を行うコードの例を次に示します。

' 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.Text
Imports System.Xml



Module SignVerifyEnvelope


    Sub Main(ByVal args() As
 String)
        ' Generate a signing key.
        Dim Key As New RSACryptoServiceProvider()

        Try

            ' Sign an XML file and save the signature to a 
            ' new file.
            SignXmlFile("Test.xml", "SignedExample.xml",
 Key)
            Console.WriteLine("XML file signed.")

            ' Verify the signature of the signed XML.
            Console.WriteLine("Verifying signature...")

            Dim result As Boolean
 = VerifyXmlFile("SignedExample.xml")

            ' Display the results of the signature verification to 
            ' the console.
            If result 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)
        Finally
            ' Clear resources associated with the 
            ' RSACryptoServiceProvider.
            Key.Clear()
        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 Key As RSA)
        ' Check the arguments.  
        If FileName Is Nothing
 Then
            Throw New ArgumentNullException("FileName")
        End If
        If SignedFileName Is Nothing
 Then
            Throw New ArgumentNullException("SignedFileName")
        End If
        If Key Is Nothing
 Then
            Throw New ArgumentNullException("Key")
        End If

        ' 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

        ' Get the signature object from the SignedXml object.
        Dim XMLSignature As Signature = signedXml.Signature

        ' Create a reference to be signed.  Pass "" 
        ' to specify that all of the current XML
        ' document should be signed.
        Dim reference As New
 Reference("")

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

        ' Add the Reference object to the Signature object.
        XMLSignature.SignedInfo.AddReference(reference)

        ' Add an RSAKeyValue KeyInfo (optional; helps recipient find
 key to validate).
        Dim keyInfo As New
 KeyInfo()
        keyInfo.AddClause(New RSAKeyValue(CType(Key, RSA)))

        ' Add the KeyInfo object to the Reference object.
        XMLSignature.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

    ' Verify the signature of an XML file and return the result.
    Function VerifyXmlFile(ByVal Name As
 String) As [Boolean]
        ' Check the arguments.  
        If Name Is Nothing
 Then
            Throw New ArgumentNullException("Name")
        End If
        ' Create a new XML document.
        Dim xmlDocument As New
 XmlDocument()

        ' Format using white spaces.
        xmlDocument.PreserveWhitespace = True

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

        ' 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()

    End Function
End Module

//
// 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.Text;
using System.Xml;

public class SignVerifyEnvelope
{

    public static void Main(String[]
 args)
    {
        // Generate a signing key.
       RSACryptoServiceProvider Key = new RSACryptoServiceProvider();

       try
       {

           // Sign an XML file and save the signature to a 
           // new file.
           SignXmlFile("Test.xml", "SignedExample.xml", Key);
           Console.WriteLine("XML file signed.");

           // Verify the signature of the signed XML.
           Console.WriteLine("Verifying signature...");

           bool result = VerifyXmlFile("SignedExample.xml");

           // Display the results of the signature verification to 
           // the console.
           if (result)
           {
               Console.WriteLine("The XML signature is valid.");
           }
           else
           {
               Console.WriteLine("The XML signature is not valid.");
           }
       }
       catch (CryptographicException e)
       {
           Console.WriteLine(e.Message);
       }
       finally
       {
           // Clear resources associated with the 
           // RSACryptoServiceProvider.
           Key.Clear();
       }
   }

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


        // 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;

        // Get the signature object from the SignedXml object.
        Signature XMLSignature = signedXml.Signature;

        // Create a reference to be signed.  Pass "" 
        // to specify that all of the current XML
        // document should be signed.
        Reference reference = new Reference("");

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

        // Add the Reference object to the Signature object.
        XMLSignature.SignedInfo.AddReference(reference);

        // Add an RSAKeyValue KeyInfo (optional; helps recipient find
 key to validate).
        KeyInfo keyInfo = new KeyInfo();
        keyInfo.AddClause(new RSAKeyValue((RSA)Key));

        // Add the KeyInfo object to the Reference object.
        XMLSignature.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();
    }
    // Verify the signature of an XML file and return the result.
    public static Boolean VerifyXmlFile(String
 Name)
    {
        // Check the arguments.  
        if (Name == null)
            throw new ArgumentNullException("Name");

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

        // Format using white spaces.
        xmlDocument.PreserveWhitespace = true;

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

        // 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();
    }
}

//
// This example signs an XML file using an
// envelope signature. It then verifies the 
// signed XML.
//
#using <System.Xml.dll>
#using <System.Security.dll>
#using <System.dll>

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

// Sign an XML file and save the signature in a new file.
static void SignXmlFile( String^ FileName,
 String^ SignedFileName, RSA^ Key )
{
   
   // Check the arguments.  
   if ( FileName == nullptr )
      throw gcnew ArgumentNullException( L"FileName" );

   if ( SignedFileName == nullptr )
      throw gcnew ArgumentNullException( L"SignedFileName" );

   if ( Key == nullptr )
      throw gcnew ArgumentNullException( L"Key" );

   
   // 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 it's 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;
   
   // Get the signature object from the SignedXml object.
   Signature^ XMLSignature = signedXml->Signature;
   
   // Create a reference to be signed.  Pass "" 
   // to specify that all of the current XML
   // document should be signed.
   Reference^ reference = gcnew Reference( L"" );
   
   // Add an enveloped transformation to the reference.
   XmlDsigEnvelopedSignatureTransform^ env = gcnew XmlDsigEnvelopedSignatureTransform;
   reference->AddTransform( env );
   
   // Add the Reference object to the Signature object.
   XMLSignature->SignedInfo->AddReference( reference );
   
   // Add an RSAKeyValue KeyInfo (optional; helps recipient find key
 to validate).
   KeyInfo^ keyInfo = gcnew KeyInfo;
   keyInfo->AddClause( gcnew RSAKeyValue( dynamic_cast<RSA^>(Key) ) );
   
   // Add the KeyInfo object to the Reference object.
   XMLSignature->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 ( dynamic_cast<XmlDeclaration^>(doc->FirstChild)
 )
   {
      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();
}


// Verify the signature of an XML file and return the result.
static Boolean VerifyXmlFile( String^ Name )
{
   
   // Check the arguments.  
   if ( Name == nullptr )
      throw gcnew ArgumentNullException( L"Name" );

   
   // Create a new XML document.
   XmlDocument^ xmlDocument = gcnew XmlDocument;
   
   // Format using white spaces.
   xmlDocument->PreserveWhitespace = true;
   
   // Load the passed XML file into the document. 
   xmlDocument->Load( Name );
   
   // Create a new SignedXml object and pass it
   // the XML document class.
   SignedXml^ signedXml = gcnew SignedXml( xmlDocument );
   
   // Find the "Signature" node and create a new
   // XmlNodeList object.
   XmlNodeList^ nodeList = xmlDocument->GetElementsByTagName( L"Signature"
 );
   
   // Load the signature node.
   signedXml->LoadXml( dynamic_cast<XmlElement^>(nodeList->Item( 0 ))
 );
   
   // Check the signature and return the result.
   return signedXml->CheckSignature();
}

int main()
{
   
   // Generate a signing key.
   RSACryptoServiceProvider^ Key = gcnew RSACryptoServiceProvider;
   try
   {
      
      // Sign an XML file and save the signature to a 
      // new file.
      SignXmlFile( L"Test.xml", L"SignedExample.xml", Key );
      Console::WriteLine( L"XML file signed." );
      
      // Verify the signature of the signed XML.
      Console::WriteLine( L"Verifying signature..." );
      bool result = VerifyXmlFile( L"SignedExample.xml"
 );
      
      // Display the results of the signature verification to 
      // the console.
      if ( result )
      {
         Console::WriteLine( L"The XML signature is valid." );
      }
      else
      {
         Console::WriteLine( L"The XML signature is not valid." );
      }
   }
   catch ( CryptographicException^ e ) 
   {
      Console::WriteLine( e->Message );
   }
   finally
   {
      
      // Clear resources associated with the 
      // RSACryptoServiceProvider.
      Key->Clear();
   }

   return 1;
}

Signature クラスを SignedXml クラスと共に使用し、デタッチシグネチャで XML ドキュメントの署名および検証を行うコードの例を次に示します。

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



Module SignVerifyEnvelope


    Sub Main(ByVal args() As
 String)
        ' Generate a signing key.
        Dim Key As New RSACryptoServiceProvider()

        Try

            ' Sign the detached resource and save the signature in an
 XML file.
            SignDetachedResource("http://www.microsoft.com",
 "SignedExample.xml", Key)

            Console.WriteLine("XML file signed.")

            ' Verify the signature of the signed XML.
            Console.WriteLine("Verifying signature...")

            Dim result As Boolean
 = VerifyXmlFile("SignedExample.xml")

            ' Display the results of the signature verification to \
            ' the console.
            If result 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)
        Finally
            ' Clear resources associated with the 
            ' RSACryptoServiceProvider.
            Key.Clear()
        End Try

    End Sub


    ' Sign an XML file and save the signature in a new file.
    Sub SignDetachedResource(ByVal URIString
 As String, ByVal XmlSigFileName
 As String, ByVal Key As RSA)
        ' Check the arguments.  
        If URIString Is Nothing
 Then
            Throw New ArgumentNullException("URIString")
        End If
        If XmlSigFileName Is Nothing
 Then
            Throw New ArgumentNullException("XmlSigFileName")
        End If
        If Key Is Nothing
 Then
            Throw New ArgumentNullException("Key")
        End If
        ' Create a SignedXml object.
        Dim signedXml As New
 SignedXml()

        ' Assign the key to the SignedXml object.
        signedXml.SigningKey = Key

        ' Get the signature object from the SignedXml object.
        Dim XMLSignature As Signature = signedXml.Signature

        ' 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 object to the Signature object.
        XMLSignature.SignedInfo.AddReference(reference)

        ' Add an RSAKeyValue KeyInfo (optional; helps recipient find
 key to validate).
        Dim keyInfo As New
 KeyInfo()
        keyInfo.AddClause(New RSAKeyValue(CType(Key, RSA)))

        ' Add the KeyInfo object to the Reference object.
        XMLSignature.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



    ' Verify the signature of an XML file and return the result.
    Function VerifyXmlFile(ByVal Name As
 String) As [Boolean]
        ' Check the arguments.  
        If Name Is Nothing
 Then
            Throw New ArgumentNullException("Name")
        End If
        ' Create a new XML document.
        Dim xmlDocument As New
 XmlDocument()

        ' Format using white spaces.
        xmlDocument.PreserveWhitespace = True

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

        ' 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()

    End Function
End Module

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

public class SignVerifyEnvelope
{

    public static void Main(String[]
 args)
    {
        // Generate a signing key.
       RSACryptoServiceProvider Key = new RSACryptoServiceProvider();

       try
       {

           // Sign the detached resource and save the signature in an
 XML file.
           SignDetachedResource("http://www.microsoft.com",
 "SignedExample.xml", Key);

           Console.WriteLine("XML file signed.");

           // Verify the signature of the signed XML.
           Console.WriteLine("Verifying signature...");

           bool result = VerifyXmlFile("SignedExample.xml");

           // Display the results of the signature verification to \
           // the console.
           if (result)
           {
               Console.WriteLine("The XML signature is valid.");
           }
           else
           {
               Console.WriteLine("The XML signature is not valid.");
           }
       }
       catch (CryptographicException e)
       {
           Console.WriteLine(e.Message);
       }
       finally
       {
           // Clear resources associated with the 
           // RSACryptoServiceProvider.
           Key.Clear();
       }
   }

    // Sign an XML file and save the signature in a new file.
    public static void SignDetachedResource(string
 URIString, string XmlSigFileName, RSA Key)
    {
        // Check the arguments.  
        if (URIString == null)
            throw new ArgumentNullException("URIString");
        if (XmlSigFileName == null)
            throw new ArgumentNullException("XmlSigFileName");
        if (Key == null)
            throw new ArgumentNullException("Key");

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

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

        // Get the signature object from the SignedXml object.
        Signature XMLSignature = signedXml.Signature;

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

        // Add the passed URI to the reference object.
        reference.Uri = URIString;

        // Add the Reference object to the Signature object.
        XMLSignature.SignedInfo.AddReference(reference);

        // Add an RSAKeyValue KeyInfo (optional; helps recipient find
 key to validate).
        KeyInfo keyInfo = new KeyInfo();
        keyInfo.AddClause(new RSAKeyValue((RSA)Key));

        // Add the KeyInfo object to the Reference object.
        XMLSignature.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();
    }


    // Verify the signature of an XML file and return the result.
    public static Boolean VerifyXmlFile(String
 Name)
    {
        // Check the arguments.  
        if (Name == null)
            throw new ArgumentNullException("Name");

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

        // Format using white spaces.
        xmlDocument.PreserveWhitespace = true;

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

        // 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();
    }
}

//
// This example signs a URL using an
// envelope signature. It then verifies the 
// signed XML.
//
#using <System.dll>
#using <System.Xml.dll>
#using <System.Security.dll>

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


namespace Sample
{
    public ref class SignVerifyEnvelope
    {
    public:
        static void Work()
        {
            // Generate a signing key.
            RSACryptoServiceProvider^ key = 
                gcnew RSACryptoServiceProvider();

            try
            {

                // Sign the detached resource and save the 
                // signature in an XML file.
                SignDetachedResource("http://www.microsoft.com"
,
                    "SignedExample.xml", key);

                Console::WriteLine("XML file signed.");

                // Verify the signature of the signed XML.
                Console::WriteLine("Verifying signature...");

                bool result = VerifyXmlFile("SignedExample.xml");

                // Display the results of the signature verification
 
                // to the console.
                if (result)
                {
                    Console::WriteLine("The XML signature"
                        " is valid.");
                }
                else
                {
                    Console::WriteLine("The XML signature"
                        " is not valid.");
                }
                Console::ReadLine();
            }

            catch (CryptographicException^ ex)
            {
                Console::WriteLine(ex->Message);
            }
            finally
            {
                // Clear resources associated with the 
                // RSACryptoServiceProvider.
                key->Clear();
            }
        }


        // Sign an XML file and save the signature in a new file.
        static void SignDetachedResource(String^
 uri, 
            String^ xmlFileName, RSA^ key)
        {
            // Check the arguments.  
            if (uri->Length == 0)
            {
                throw gcnew ArgumentException("uri");
            }
            if (xmlFileName->Length == 0)
            {
                throw gcnew ArgumentException("xmlFileName");
            } 
            if (key->KeySize == 0)
            {
                throw gcnew ArgumentException("key");
            }
            // Create a SignedXml object.
            SignedXml^ signedXml = gcnew SignedXml();

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

            // Get the signature object from the SignedXml object.
            Signature^ xmlSignature = signedXml->Signature;

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

            // Add the passed URI to the reference object.
            reference->Uri = uri;

            // Add the Reference object to the Signature object.
            xmlSignature->SignedInfo->AddReference(reference);

            // Add an RSAKeyValue KeyInfo (optional; helps recipient
            // find key to validate).
            KeyInfo^ keyInfo = gcnew KeyInfo();
            keyInfo->AddClause(
                gcnew RSAKeyValue(key));

            // Add the KeyInfo object to the Reference object.
            xmlSignature->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^ xmlTextWriter = gcnew XmlTextWriter(
                xmlFileName, gcnew UTF8Encoding(false));

            xmlDigitalSignature->WriteTo(xmlTextWriter);
            xmlTextWriter->Close();
        }


        // Verify the signature of an XML file and return the result.
        static Boolean VerifyXmlFile(String^ documentName)
        {
            // Check the arguments.  
            if (documentName->Length == 0)
            {
                throw gcnew ArgumentException("documentName");
            }
            // Create a new XML document.
            XmlDocument^ xmlDocument = gcnew XmlDocument();

            // Format using white spaces.
            xmlDocument->PreserveWhitespace = true;

            // Load the passed XML file into the document. 
            xmlDocument->Load(documentName);

            // Create a new SignedXml object and pass it
            // the XML document class.
            SignedXml^ signedXml = gcnew 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->Item(0));

            // Check the signature and return the result.
            return signedXml->CheckSignature();
        }
    };
}


int main()
{
    Sample::SignVerifyEnvelope::Work();
}

プラットフォーム

プラットフォーム

バージョン情報

バージョン情報

.NET Framework
サポート対象 : 2.0、1.1、1.0

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

Signature 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
	Id	現在の Signature の ID を取得または設定します。
	KeyInfo	現在の Signature の KeyInfo を取得または設定します。
	ObjectList	署名されるオブジェクトのリストを取得または設定します。
	SignatureValue	デジタル署名の値を取得または設定します。
	SignedInfo	現在の Signature の SignedInfo を取得または設定します。

関連項目

Signature クラス
System.Security.Cryptography.Xml 名前空間
SignedXml

Signature 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
	AddObject	署名されるオブジェクトのリストに DataObject を追加します。
	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	Signature の XML 表現を返します。
	LoadXml	XML 要素から Signature の状態を読み込みます。
	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

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。)

関連項目

Signature クラス
System.Security.Cryptography.Xml 名前空間
SignedXml

Signature メンバ

XML 署名の <Signature> 要素を表します。

Signature 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

パブリックコンストラクタ

	名前	説明
	Signature	Signature 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

パブリックプロパティ

	名前	説明
	Id	現在の Signature の ID を取得または設定します。
	KeyInfo	現在の Signature の KeyInfo を取得または設定します。
	ObjectList	署名されるオブジェクトのリストを取得または設定します。
	SignatureValue	デジタル署名の値を取得または設定します。
	SignedInfo	現在の Signature の SignedInfo を取得または設定します。

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
	AddObject	署名されるオブジェクトのリストに DataObject を追加します。
	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	Signature の XML 表現を返します。
	LoadXml	XML 要素から Signature の状態を読み込みます。
	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

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。)

関連項目

Signature クラス
System.Security.Cryptography.Xml 名前空間
SignedXml

LINE (アプリケーション)

トロント・ブルージェイズ

転生したらスライムだった件

このページでは「.NET Framework クラスライブラリリファレンス」からsignatureを検索した結果を表示しています。
Weblioに収録されているすべての辞書からsignatureを検索する場合は、下記のリンクをクリックしてください。

全ての辞書からsignatureを検索

>> 「signature」を含む用語の索引
signatureのページへのリンク

辞書ショートカット

1 .NET Framework クラスライブラリリファレンス

カテゴリ一覧

＋ビジネス

＋業界用語

＋コンピュータ

＋自動車・バイク

＋船

＋建築・不動産

＋ヘルスケア

＋スポーツ

＋辞書・百科事典

すべての辞書の索引

Weblioのサービス

「signature」の関連用語

1

SignedXml.m_signature フィールド

.NET Framework クラスライブラリリファレンス

74% |||||

2

Signature プロパティ

.NET Framework クラスライブラリリファレンス

72% |||||

3

実装ライブラリ

ウィキペディア小見出し辞書

72% |||||

4

ウィキペディア小見出し辞書

72% |||||

5

ウィキペディア小見出し辞書

72% |||||

6

鍵ペアの生成

ウィキペディア小見出し辞書

72% |||||

7

Signature コンストラクタ

.NET Framework クラスライブラリリファレンス

72% |||||

8

Surface Pro Type Cover / Surface Pro Signature Type Cover

ウィキペディア小見出し辞書

70% |||||

9

SignedXml コンストラクタ

.NET Framework クラスライブラリリファレンス

58% |||||

10

ConstructorBuilder.Signature プロパティ

.NET Framework クラスライブラリリファレンス

56% |||||

signatureのお隣キーワード

Signal (TK from 凛として時雨の曲)

SIGNAL (カシオペアのアルバム)

SIGNAL (ゲーム)

Signal (ソフトウェア)

Signalプロトコル

SIGNAL (韓国のTWICEのアルバム)

signature

Signature.AddObject メソッド

SignatureDescription.CreateDeformatter メソッド

SignatureDescription.CreateDigest メソッド

SignatureDescription.CreateFormatter メソッド

SignatureDescription.DeformatterAlgorithm プロパティ

SignatureDescription.DigestAlgorithm プロパティ

検索ランキング

signatureのページの著作権
Weblio 辞書情報提供元は参加元一覧にて確認できます。


	© 2024 Microsoft.All rights reserved.

ビジネス｜業界用語｜コンピュータ｜電車｜自動車・バイク｜船｜工学｜建築・不動産｜学問
 文化｜生活｜ヘルスケア｜趣味｜スポーツ｜生物｜食品｜人名｜方言｜辞書・百科事典

ご利用にあたって

・Weblio辞書とは

・検索の仕方

・利用規約

・プライバシーポリシー

・サイトマップ

便利な機能

・ウェブリオのアプリ

・画像から探す

お問合せ・ご要望

・お問い合わせ

会社概要

・公式企業ページ

・会社情報

・採用情報

ウェブリオのサービス

・Weblio 辞書

・類語・対義語辞典

・英和辞典・和英辞典

・Weblio翻訳

・日中中日辞典

・日韓韓日辞典

・フランス語辞典

・インドネシア語辞典

・タイ語辞典

・ベトナム語辞典

・古語辞典

・手話辞典

・IT用語辞典バイナリ

・おすすめのプログラミングスクール情報「Livifun」

©2024 GRAS Group, Inc.RSS