SignedXml.XmlDsigEnvelopedSignatureTransformUrl フィールドとは何？わかりやすく解説 Weblio辞書

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.NET Framework クラスライブラリリファレンス

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SignedXml.XmlDsigEnvelopedSignatureTransformUrl フィールド

メモ : このフィールドは、.NET Framework version 2.0 で新しく追加されたものです。

エンベロープシグネチャ変換の URI (Uniform Resource Identifier) を表します。このフィールドは定数です。

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 Const XmlDsigEnvelopedSignatureTransformUrl
 As String

Visual Basic (使用法)

Dim value As String

value = SignedXml.XmlDsigEnvelopedSignatureTransformUrl

public const string XmlDsigEnvelopedSignatureTransformUrl

C++

public:
literal String^ XmlDsigEnvelopedSignatureTransformUrl

public static final String XmlDsigEnvelopedSignatureTransformUrl

JScript

public const var XmlDsigEnvelopedSignatureTransformUrl
 : String

解説

XmlDsigEnvelopedSignatureTransformUrl フィールドの値は "http://www.w3.org/2000/09/xmldsig#enveloped-signature" です。

XMLDSIG 用の要素のいずれかの URI 属性に対し効率よく値を提供するには、このフィールドを使用します。

XmlDsigEnvelopedSignatureTransform クラスは、XmlDsigEnvelopedSignatureTransformUrl フィールドで定義された変換を実装します。

詳細については、http://www.w3.org/2000/09/xmldsig#enveloped-signature の「W3C (World Wide Web Consortium) 仕様」を参照してください。

使用例

XmlDsigEnvelopedSignatureTransform クラスのメンバを使用する方法を次のコード例に示します。

Visual Basic

Imports System
Imports System.IO
Imports System.Xml
Imports System.Security.Cryptography
Imports System.Security.Cryptography.Xml
Imports System.Security.Cryptography.X509Certificates

Public Class Form1
    Inherits System.Windows.Forms.Form

    Private certificatePath As String
 = "..\\my509.cer"

    ' Event handler for Run button.
    Private Sub Button1_Click( _
        ByVal sender As System.Object, _
        ByVal e As System.EventArgs) Handles
 Button1.Click

        tbxOutput.Cursor = Cursors.WaitCursor
        tbxOutput.Text = ""

        ' Encrypt an XML message
        Dim productsXml As XmlDocument = LoadProducts()
        ShowTransformProperties(productsXml)

        SignDocument(productsXml)
        ShowTransformProperties(productsXml)

        ' Use XmlDsigEnvelopedSignatureTransform to resolve a Uri.
        Dim baseUri As New
 Uri("http://www.contoso.com")
        Dim relativeUri As String
 = "xml"
        Dim absoluteUri As Uri = ResolveUris(baseUri,
 relativeUri)

        ' Align interface and conclude application.
        WriteLine(vbCrLf + "This sample completed successfully;"
 + _
            " press Exit to continue.")

        ' Reset the cursor.
        tbxOutput.Cursor = Cursors.Default
    End Sub

    ' Encrypt the text in the specified XmlDocument.
    Private Sub ShowTransformProperties(ByVal
 xmlDoc As XmlDocument)
        Dim xmlTransform As New
 XmlDsigEnvelopedSignatureTransform

        ' Ensure the transform is using the proper algorithm.
        xmlTransform.Algorithm = _
            SignedXml.XmlDsigEnvelopedSignatureTransformUrl

        ' Retrieve the XML representation of the current transform.
        Dim xmlInTransform As XmlElement =
 xmlTransform.GetXml()

        WriteLine(vbCrLf + "Xml representation of the current
 transform: ")
        WriteLine(xmlInTransform.OuterXml)

        ' Retrieve the valid input types for the current transform.
        Dim validInTypes() As Type = xmlTransform.InputTypes

        ' Verify the xmlTransform can accept the XMLDocument as an
        ' input type.
        For i As Int16 = 0 To
 validInTypes.Length Step 1
            If (validInTypes(i).Equals(xmlDoc.GetType())) Then
                ' Load the document into the transfrom.
                xmlTransform.LoadInput(xmlDoc)

                Dim IncludeComments As Boolean
 = True
                ' This transform is created for demonstration purposes.
                Dim secondTransform As _
                    New XmlDsigEnvelopedSignatureTransform(IncludeComments)

                Dim classDescription As String
 = secondTransform.ToString()

                ' This call does not perform as expected.
                ' An enveloped signature has no inner XML elements
                secondTransform.LoadInnerXml(xmlDoc.SelectNodes("//."))
                Exit For
            End If
        Next

        Dim validOutTypes() As Type = xmlTransform.OutputTypes
        For i As Int16 = validOutTypes.Length
 - 1 To 0 Step -1
            If (validOutTypes(i).Equals(GetType(System.Xml.XmlDocument)))
 Then
                Try
                    Dim xmlDocumentType As
 Type
                    xmlDocumentType = GetType(System.Xml.XmlDocument)

                    Dim xmlDocumentOutput As
 XmlDocument
                    xmlDocumentOutput = CType( _
                        xmlTransform.GetOutput(xmlDocumentType), _
                        XmlDocument)

                    ' Display to the console the Xml before and after
                    ' encryption.
                    WriteLine("Result of the GetOutput method
 call from " + _
                        "the current transform: "
 + _
                        xmlDocumentOutput.OuterXml)
                Catch ex As Exception
                    WriteLine("Unexpected exception caught: "
 + ex.ToString())

                End Try
                Exit For
            ElseIf (validOutTypes(i).Equals( _
                GetType(System.Xml.XmlNodeList))) Then

                Try
                    Dim xmlNodeListType As
 Type
                    xmlNodeListType = GetType(System.Xml.XmlNodeList)
                    Dim xmlNodes As XmlNodeList
                    xmlNodes = CType( _
                        xmlTransform.GetOutput(xmlNodeListType), _
                        System.Xml.XmlNodeList)

                    ' Display to the console the Xml before and after
                    ' encryption.
                    WriteLine("Encoding the following message:
 " + _
                        xmlDoc.InnerText)

                    WriteLine("Nodes of the XmlNodeList retrieved
 from " + _
                        "GetOutput:")

                    For j As Int16 = 0 To
 xmlNodes.Count - 1 Step 1
                        WriteLine("Node " + j.ToString()
 + " has the " + _
                            "following name: " + xmlNodes.Item(j).Name
 + _
                            " and the following InnerXml: "
 + _
                            xmlNodes.Item(j).InnerXml)
                    Next
                Catch ex As Exception
                    WriteLine("Unexpected exception caught: "
 + ex.ToString())
                End Try

                Exit For
            Else
                Dim outputObject As Object
 = xmlTransform.GetOutput()
            End If
        Next
    End Sub

    Private Function LoadProducts() As
 XmlDocument
        Dim xmlDoc As New
 XmlDocument

        Dim contosoProducts As String
 = "<PRODUCTS>"
        contosoProducts += "<PRODUCT><ID>123</ID>"
        contosoProducts += "<DESCRIPTION>Router</DESCRIPTION></PRODUCT>"
        contosoProducts += "<PRODUCT><ID>456</ID>"
        contosoProducts += "<DESCRIPTION>Keyboard</DESCRIPTION></PRODUCT>"
        contosoProducts += "<PRODUCT><ID>789</ID>"
        contosoProducts += "<DESCRIPTION>Monitor</DESCRIPTION></PRODUCT>"
        contosoProducts += "</PRODUCTS>"

        xmlDoc.LoadXml(contosoProducts)
        Return xmlDoc
    End Function

    ' Create a signature and add it to the specified document.
    Private Sub SignDocument(ByRef
 xmlDoc As XmlDocument)
        ' Generate a signing key.
        Dim Key As New RSACryptoServiceProvider

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

        ' 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.
        Reference.AddTransform(New XmlDsigEnvelopedSignatureTransform)

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

        Try
            ' Create a new KeyInfo object.
            Dim keyInfo As New
 keyInfo

            ' Load the X509 certificate.
            Dim MSCert As X509Certificate
            MSCert = X509Certificate.CreateFromCertFile(certificatePath)

            ' 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

        Catch ex As FileNotFoundException
            WriteLine("Unable to load the following file: "
 + certificatePath)

        End Try
        ' Compute the signature.
        signedXml.ComputeSignature()

        ' Add the signature branch to the original tree so it is enveloped.
        xmlDoc.DocumentElement.AppendChild(signedXml.GetXml())
    End Sub

    ' Resolve the specified base and relative Uri's .
    Private Function ResolveUris( _
        ByVal baseUri As Uri, _
        ByVal relativeUri As String)
 As Uri

        Dim xmlResolver As New
 XmlUrlResolver

        xmlResolver.Credentials = _
            System.Net.CredentialCache.DefaultCredentials

        Dim xmlTransform As New
 XmlDsigEnvelopedSignatureTransform
        xmlTransform.Resolver = xmlResolver

        Dim absoluteUri As Uri = xmlResolver.ResolveUri(baseUri,
 relativeUri)

        If Not absoluteUri Is
 Nothing Then
            WriteLine(vbCrLf + "Resolved the base Uri and relative
 Uri " + _
                "to the following:")
            WriteLine(absoluteUri.ToString())
        Else
            WriteLine("Unable to resolve the base Uri and relative
 Uri")
        End If

        Return absoluteUri
    End Function

    ' Write specified message and carriage return to the output textbox.
    Private Sub WriteLine(ByVal
 message As String)
        tbxOutput.AppendText(Message + vbCrLf)

    End Sub

    ' Event handler for Exit button.
    Private Sub Button2_Click( _
        ByVal sender As System.Object, _
        ByVal e As System.EventArgs) Handles
 Button2.Click

        Application.Exit()
    End Sub
#Region " Windows Form Designer generated code "

    Public Sub New()
        MyBase.New()

        'This call is required by the Windows Form Designer.
        InitializeComponent()

        'Add any initialization after the InitializeComponent() call

    End Sub

    'Form overrides dispose to clean up the component list.
    Protected Overloads Overrides
 Sub Dispose(ByVal disposing As
 Boolean)
        If disposing Then
            If Not (components Is
 Nothing) Then
                components.Dispose()
            End If
        End If
        MyBase.Dispose(disposing)
    End Sub

    'Required by the Windows Form Designer
    Private components As System.ComponentModel.IContainer

    'NOTE: The following procedure is required by the Windows Form Designer
    'It can be modified using the Windows Form Designer.  
    'Do not modify it using the code editor.
    Friend WithEvents Panel2 As
 System.Windows.Forms.Panel
    Friend WithEvents Panel1 As
 System.Windows.Forms.Panel
    Friend WithEvents Button1 As
 System.Windows.Forms.Button
    Friend WithEvents Button2 As
 System.Windows.Forms.Button
    Friend WithEvents tbxOutput As
 System.Windows.Forms.RichTextBox
    <System.Diagnostics.DebuggerStepThrough()> _
    Private Sub InitializeComponent()
        Me.Panel2 = New System.Windows.Forms.Panel
        Me.Button1 = New System.Windows.Forms.Button
        Me.Button2 = New System.Windows.Forms.Button
        Me.Panel1 = New System.Windows.Forms.Panel
        Me.tbxOutput = New System.Windows.Forms.RichTextBox
        Me.Panel2.SuspendLayout()
        Me.Panel1.SuspendLayout()
        Me.SuspendLayout()
        '
        'Panel2
        '
        Me.Panel2.Controls.Add(Me.Button1)
        Me.Panel2.Controls.Add(Me.Button2)
        Me.Panel2.Dock = System.Windows.Forms.DockStyle.Bottom
        Me.Panel2.DockPadding.All = 20
        Me.Panel2.Location = New System.Drawing.Point(0,
 320)
        Me.Panel2.Name = "Panel2"
        Me.Panel2.Size = New System.Drawing.Size(616,
 64)
        Me.Panel2.TabIndex = 1
        '
        'Button1
        '
        Me.Button1.Dock = System.Windows.Forms.DockStyle.Right
        Me.Button1.Font = New System.Drawing.Font(
 _
            "Microsoft Sans Serif", _
            9.0!, _
            System.Drawing.FontStyle.Regular, _
            System.Drawing.GraphicsUnit.Point, _
            CType(0, Byte))
        Me.Button1.Location = New System.Drawing.Point(446,
 20)
        Me.Button1.Name = "Button1"
        Me.Button1.Size = New System.Drawing.Size(75,
 24)
        Me.Button1.TabIndex = 2
        Me.Button1.Text = "&Run"
        '
        'Button2
        '
        Me.Button2.Dock = System.Windows.Forms.DockStyle.Right
        Me.Button2.Font = New System.Drawing.Font(
 _
            "Microsoft Sans Serif", _
            9.0!, _
            System.Drawing.FontStyle.Regular, _
            System.Drawing.GraphicsUnit.Point, _
            CType(0, Byte))
        Me.Button2.Location = New System.Drawing.Point(521,
 20)
        Me.Button2.Name = "Button2"
        Me.Button2.Size = New System.Drawing.Size(75,
 24)
        Me.Button2.TabIndex = 3
        Me.Button2.Text = "E&xit"
        '
        'Panel1
        '
        Me.Panel1.Controls.Add(Me.tbxOutput)
        Me.Panel1.Dock = System.Windows.Forms.DockStyle.Fill
        Me.Panel1.DockPadding.All = 20
        Me.Panel1.Location = New System.Drawing.Point(0,
 0)
        Me.Panel1.Name = "Panel1"
        Me.Panel1.Size = New System.Drawing.Size(616,
 320)
        Me.Panel1.TabIndex = 2
        '
        'tbxOutput
        '
        Me.tbxOutput.AccessibleDescription = _
            "Displays output from application."
        Me.tbxOutput.AccessibleName = "Output
 textbox."
        Me.tbxOutput.Dock = System.Windows.Forms.DockStyle.Fill
        Me.tbxOutput.Location = New System.Drawing.Point(20,
 20)
        Me.tbxOutput.Name = "tbxOutput"
        Me.tbxOutput.Size = New System.Drawing.Size(576,
 280)
        Me.tbxOutput.TabIndex = 1
        Me.tbxOutput.Text = "Click the Run
 button to run the application."
        '
        'Form1
        '
        Me.AutoScaleBaseSize = New System.Drawing.Size(6,
 15)
        Me.ClientSize = New System.Drawing.Size(616,
 384)
        Me.Controls.Add(Me.Panel1)
        Me.Controls.Add(Me.Panel2)
        Me.Name = "Form1"
        Me.Text = "XmlDsigEnvelopedSignatureTransform"
        Me.Panel2.ResumeLayout(False)
        Me.Panel1.ResumeLayout(False)
        Me.ResumeLayout(False)

    End Sub

#End Region
End Class
'
' This sample produces the following output:
'
' Xml representation of the current transform: 
' <Transform Algorithm="http://www.w3.org/2000/09/xmldsig#enveloped-signature"
' xmlns="http://www.w3.org/2000/09/xmldsig#" />
' Result of the GetOutput method call from the current transform: <PRODUCTS>
' <PRODUCT><ID>123</ID><DESCRIPTION>Router</DESCRIPTION></PRODUCT><PRODUCT>
' <ID>456</ID><DESCRIPTION>Keyboard</DESCRIPTION></PRODUCT><PRODUCT><ID>789
' </ID><DESCRIPTION>Monitor</DESCRIPTION></PRODUCT></PRODUCTS>
' Unable to load the following file: ..\\my509.cer
' 
' Xml representation of the current transform: 
' <Transform Algorithm="http://www.w3.org/2000/09/xmldsig#enveloped-signature"
'  xmlns="http://www.w3.org/2000/09/xmldsig#" />
' Result of the GetOutput method call from the current transform: <PRODUCTS>
' <PRODUCT><ID>123</ID><DESCRIPTION>Router</DESCRIPTION></PRODUCT><PRODUCT>
' <ID>456</ID><DESCRIPTION>Keyboard</DESCRIPTION></PRODUCT><PRODUCT><ID>789
' </ID><DESCRIPTION>Monitor</DESCRIPTION></PRODUCT><Signature
 xmlns=
' "http://www.w3.org/2000/09/xmldsig#"><SignedInfo><CanonicalizationMethod
 
' Algorithm="http://www.w3.org/TR/2001/REC-xml-c14n-20010315"
 />
' <SignatureMethod Algorithm="http://www.w3.org/2000/09/xmldsig#rsa-sha1"
 />
' <Reference URI=""><Transforms><Transform
 Algorithm="http://www.w3.org/2000
' /09/xmldsig#enveloped-signature" /></Transforms><DigestMethod
 Algorithm=
' "http://www.w3.org/2000/09/xmldsig#sha1" /><DigestValue>KvPW6HUiIUMEDS0YSoTg
' po2JPbA=</DigestValue></Reference></SignedInfo><SignatureValue>c/njCGDru/aWA
' mWG83I+mWO040xOzxvmNx0b0o8ZyPc9j5VwApdAt103OGBtB1H6EkOvt7Ekw+PVuUo8m5LzLPyaT
' xUDMbb2kZZ5itSkGD4rmMUMUMuzrkAoquJZjxeOydBJ2CMehV2rE3RMPLIwRX176DZVy5JKU6Cb7
' PR2Rpw=</SignatureValue></Signature></PRODUCTS>
' 
' Resolved the base Uri and relative Uri to the following:
' http://www.contoso.com/xml
' 
' This sample completed successfully; press Exit to continue.

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

class Class1
{
    private static string
 Certificate =  "..\\..\\my509.cer";

    [STAThread]
    static void Main(string[]
 args)
    {
        // Encrypt an XML message
        XmlDocument productsXml = LoadProducts();
        ShowTransformProperties(productsXml);

        SignDocument(ref productsXml);
        ShowTransformProperties(productsXml);

        // Use XmlDsigEnvelopedSignatureTransform to resolve a Uri.
        Uri baseUri = new Uri("http://www.contoso.com");
        string relativeUri = "xml";
        Uri absoluteUri = ResolveUris(baseUri, relativeUri);

        Console.WriteLine("This sample completed successfully; " +
            "press Enter to exit.");
        Console.ReadLine();
    }

    // Encrypt the text in the specified XmlDocument.
    private static void
 ShowTransformProperties(XmlDocument xmlDoc)
    {
        XmlDsigEnvelopedSignatureTransform xmlTransform = 
            new XmlDsigEnvelopedSignatureTransform();

        // Ensure the transform is using the proper algorithm.
        xmlTransform.Algorithm =
            SignedXml.XmlDsigEnvelopedSignatureTransformUrl;

        // Retrieve the XML representation of the current transform.
        XmlElement xmlInTransform = xmlTransform.GetXml();

        Console.WriteLine("\nXml representation of the current transform: ");
        Console.WriteLine(xmlInTransform.OuterXml);

        // Retrieve the valid input types for the current transform.
        Type[] validInTypes = xmlTransform.InputTypes;

        // Verify the xmlTransform can accept the XMLDocument as an
        // input type.
        for (int i=0; i<validInTypes.Length;
 i++)
        {
            if (validInTypes[i] == xmlDoc.GetType())
            {
                // Load the document into the transfrom.
                xmlTransform.LoadInput(xmlDoc);

                bool IncludeComments = true;
                // This transform is created for demonstration purposes.
                XmlDsigEnvelopedSignatureTransform secondTransform =
                    new XmlDsigEnvelopedSignatureTransform(IncludeComments);

                string classDescription = secondTransform.ToString();

                // This call does not perform as expected.
                // An enveloped signature has no inner XML elements
                secondTransform.LoadInnerXml(xmlDoc.SelectNodes("//."));

                break;
            }
        }

        Type[] validOutTypes = xmlTransform.OutputTypes;

        for (int i=validOutTypes.Length-1;
 i >= 0; i--)
        {
            if (validOutTypes[i] == typeof(System.Xml.XmlDocument))
            {
                try 
                {
                    Type xmlDocumentType = typeof(System.Xml.XmlDocument);
                    XmlDocument xmlDocumentOutput = (XmlDocument) 
                        xmlTransform.GetOutput(xmlDocumentType);

                    // Display to the console the Xml before and after
                    // encryption.
                    Console.WriteLine("Result of the GetOutput method call"
 +
                        " from the current transform: " + 
                        xmlDocumentOutput.OuterXml);
                }
                catch (Exception ex)
                {
                    Console.WriteLine("Unexpected exception caught: " +
                        ex.ToString());
                }

                break;
            }
            else if (validOutTypes[i] == typeof(System.Xml.XmlNodeList))
            {
                try 
                {
                    Type xmlNodeListType = typeof(System.Xml.XmlNodeList);
                    XmlNodeList xmlNodes = (XmlNodeList) 
                        xmlTransform.GetOutput(xmlNodeListType);

                    // Display to the console the Xml before and after
                    // encryption.
                    Console.WriteLine("Encoding the following message: "
 +
                        xmlDoc.InnerText);

                    Console.WriteLine("Nodes of the XmlNodeList retrieved "
 +
                        "from GetOutput:");
                    for (int j=0; j < xmlNodes.Count;
 j++)
                    {
                        Console.WriteLine("Node " + j + 
                            " has the following name: " + 
                            xmlNodes.Item(j).Name + 
                            " and the following InnerXml: " + 
                            xmlNodes.Item(j).InnerXml);
                    }
                }
                catch (Exception ex)
                {
                    Console.WriteLine("Unexpected exception caught: " +
                        ex.ToString());
                }

                break;
            }
            else
            {
                object outputObject = xmlTransform.GetOutput();
            }
        }
    }

    // Create an XML document describing various products.
    private static XmlDocument LoadProducts()
    {
        XmlDocument xmlDoc = new XmlDocument();

        string contosoProducts = "<PRODUCTS>";
        contosoProducts += "<PRODUCT><ID>123</ID>";
        contosoProducts += "<DESCRIPTION>Router</DESCRIPTION></PRODUCT>";
        contosoProducts += "<PRODUCT><ID>456</ID>";
        contosoProducts += "<DESCRIPTION>Keyboard</DESCRIPTION></PRODUCT>";
        contosoProducts += "<PRODUCT><ID>789</ID>";
        contosoProducts += "<DESCRIPTION>Monitor</DESCRIPTION></PRODUCT>";
        contosoProducts += "</PRODUCTS>";

        xmlDoc.LoadXml(contosoProducts);
        return xmlDoc;
    }

    // Create a signature and add it to the specified document.
    private static void
 SignDocument(ref XmlDocument xmlDoc)
    {
        // Generate a signing key.
        RSACryptoServiceProvider Key = new RSACryptoServiceProvider();

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

        // 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.
        reference.AddTransform(new XmlDsigEnvelopedSignatureTransform());

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

        try 
        {
            // 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;
        }
        catch (FileNotFoundException ex)
        {
            Console.WriteLine("Unable to locate the following file: " +
 
                Certificate);
        }

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

        // Add the signature branch to the original tree so it is enveloped.
        xmlDoc.DocumentElement.AppendChild(signedXml.GetXml());
    }

    // Resolve the specified base and relative Uri's .
    private static Uri ResolveUris(Uri baseUri,
 string relativeUri)
    {
        XmlUrlResolver xmlResolver = new XmlUrlResolver();
        xmlResolver.Credentials = 
            System.Net.CredentialCache.DefaultCredentials;

        XmlDsigEnvelopedSignatureTransform xmlTransform =
            new XmlDsigEnvelopedSignatureTransform();
        xmlTransform.Resolver = xmlResolver;

        Uri absoluteUri = xmlResolver.ResolveUri(baseUri, relativeUri);

        if (absoluteUri != null)
        {
            Console.WriteLine(
                "\nResolved the base Uri and relative Uri
 to the following:");
            Console.WriteLine(absoluteUri.ToString());
        }
        else
        {
            Console.WriteLine(
                "Unable to resolve the base Uri and relative
 Uri");
        }
        return absoluteUri;
    }
}
//
// This sample produces the following output:
//
// Xml representation of the current transform: 
// <Transform Algorithm="http://www.w3.org/2000/09/xmldsig#enveloped-
// signature" xmlns="http://www.w3.org/2000/09/xmldsig#"
 />
// Result of the GetOutput method call from the current transform: <PRODUCTS>
// <PRODUCT><ID>123</ID><DESCRIPTION>Router</DESCRIPTION></PRODUCT><PRODUCT>
// <ID>456</ID><DESCRIPTION>Keyboard</DESCRIPTION></PRODUCT><PRODUCT><ID>789
// </ID><DESCRIPTION>Monitor</DESCRIPTION></PRODUCT></PRODUCTS>
// Unable to load the following file: ..\\my509.cer
// 
// Xml representation of the current transform: 
// <Transform Algorithm="http://www.w3.org/2000/09/xmldsig#enveloped-
// signature" xmlns="http://www.w3.org/2000/09/xmldsig#"
 />
// Result of the GetOutput method call from the current transform: <PRODUCTS>
// <PRODUCT><ID>123</ID><DESCRIPTION>Router</DESCRIPTION></PRODUCT><PRODUCT>
// <ID>456</ID><DESCRIPTION>Keyboard</DESCRIPTION></PRODUCT><PRODUCT><ID>789
// </ID><DESCRIPTION>Monitor</DESCRIPTION></PRODUCT><Signature
 xmlns=
// "http://www.w3.org/2000/09/xmldsig#"><SignedInfo><CanonicalizationMethod
 
// Algorithm="http://www.w3.org/TR/2001/REC-xml-c14n-20010315"
 />
// <SignatureMethod Algorithm="http://www.w3.org/2000/09/xmldsig#rsa-sha1"
 />
// <Reference URI=""><Transforms><Transform
 Algorithm="http://www.w3.org/2000
// /09/xmldsig#enveloped-signature" /></Transforms><DigestMethod
 Algorithm=
// "http://www.w3.org/2000/09/xmldsig#sha1" /><DigestValue>KvPW6HUiIUMEDS0YSoT
// gpo2JPbA=</DigestValue></Reference></SignedInfo><SignatureValue>c/njCGDru/a
// WAmWG83I+mWO040xOzxvmNx0b0o8ZyPc9j5VwApdAt103OGBtB1H6EkOvt7Ekw+PVuUo8m5LzLP
// yaTxUDMbb2kZZ5itSkGD4rmMUMUMuzrkAoquJZjxeOydBJ2CMehV2rE3RMPLIwRX176DZVy5JKU
// 6Cb7PR2Rpw=</SignatureValue></Signature></PRODUCTS>
// 
// Resolved the base Uri and relative Uri to the following:
// http://www.contoso.com/xml
// This sample completed successfully; press Enter to exit.

C++

#using <System.dll>
#using <System.Xml.dll>
#using <System.Security.dll>

using namespace System;
using namespace System::IO;
using namespace System::Xml;
using namespace System::Security::Cryptography;
using namespace System::Security::Cryptography::Xml;
using namespace System::Security::Cryptography::X509Certificates;

public ref class EnvelopedSignatureSample
{
private:
    static String^ Certificate =  "..\\..\\my509.cer";

    // Encrypt the text in the specified XmlDocument.
public:
    static void ShowTransformProperties(XmlDocument^
 xmlDoc)
    {
        XmlDsigEnvelopedSignatureTransform^ xmlTransform =
            gcnew XmlDsigEnvelopedSignatureTransform();

        // Ensure the transform is using the proper algorithm.
        xmlTransform->Algorithm =
            SignedXml::XmlDsigEnvelopedSignatureTransformUrl;

        // Retrieve the XML representation of the current transform.
        XmlElement^ xmlInTransform = xmlTransform->GetXml();

        Console::WriteLine("\nXml representation of the current transform: ");
        Console::WriteLine(xmlInTransform->OuterXml);

        // Retrieve the valid input types for the current transform.
        array<Type^>^ validInTypes = xmlTransform->InputTypes;

        // Verify the xmlTransform can accept the XMLDocument as an
        // input type.
        for (int i = 0; i < validInTypes->Length;
 i++)
        {
            if (validInTypes[i] == xmlDoc->GetType())
            {
                // Load the document into the transfrom.
                xmlTransform->LoadInput(xmlDoc);

                bool IncludeComments = true;
                // This transform is created for demonstration purposes.
                XmlDsigEnvelopedSignatureTransform^ secondTransform =
                    gcnew XmlDsigEnvelopedSignatureTransform(IncludeComments);

                String^ classDescription = secondTransform->ToString();

                // This call does not perform as expected.
                // An enveloped signature has no inner XML elements
                secondTransform->LoadInnerXml(xmlDoc->SelectNodes("//."));

                break;
            }
        }

        array<Type^>^ validOutTypes = xmlTransform->OutputTypes;

        for (int i = validOutTypes->Length-1;
 i >= 0; i--)
        {
            if (validOutTypes[i] == System::Xml::XmlDocument::typeid)
            {
                Type^ xmlDocumentType = System::Xml::XmlDocument::typeid;
                XmlDocument^ xmlDocumentOutput = (XmlDocument^)
                    xmlTransform->GetOutput(xmlDocumentType);

                // Display to the console the Xml before and after
                // encryption.
                Console::WriteLine("Result of the GetOutput method call"
 +
                    " from the current transform: " +
                    xmlDocumentOutput->OuterXml);

                break;
            }
            else if (validOutTypes[i] == System::Xml::XmlNodeList::typeid)
            {
                Type^ xmlNodeListType = System::Xml::XmlNodeList::typeid;
                XmlNodeList^ xmlNodes = (XmlNodeList^)
                    xmlTransform->GetOutput(xmlNodeListType);

                // Display to the console the Xml before and after
                // encryption.
                Console::WriteLine("Encoding the following message: " +
                    xmlDoc->InnerText);

                Console::WriteLine("Nodes of the XmlNodeList retrieved "
 +
                    "from GetOutput:");
                for (int j = 0; j < xmlNodes->Count;
 j++)
                {
                    Console::WriteLine("Node " + j +
                        " has the following name: " +
                        xmlNodes->Item(j)->Name +
                        " and the following InnerXml: " +
                        xmlNodes->Item(j)->InnerXml);
                }

                break;
            }
            else
            {
                Object^ outputObject = xmlTransform->GetOutput();
            }
        }
    }

    // Create an XML document describing various products.
public:
    static XmlDocument^ LoadProducts()
    {
        XmlDocument^ xmlDoc = gcnew XmlDocument();

        String^ contosoProducts = "<PRODUCTS>" +
            "<PRODUCT><ID>123</ID><DESCRIPTION>Router"
 + 
            "</DESCRIPTION></PRODUCT>" +
            "<PRODUCT><ID>456</ID><DESCRIPTION>Keyboard"
 +
            "</DESCRIPTION></PRODUCT>" +
            "<PRODUCT><ID>789</ID><DESCRIPTION>Monitor"
 +
            "</DESCRIPTION></PRODUCT>" +
            "</PRODUCTS>";

        xmlDoc->LoadXml(contosoProducts);
        return xmlDoc;
    }

    // Create a signature and add it to the specified document.
public:
    static void SignDocument(XmlDocument^ xmlDoc)
    {
        // Generate a signing key.
        RSACryptoServiceProvider^ key = gcnew RSACryptoServiceProvider();

        // Create a SignedXml object.
        SignedXml^ signedDocument = gcnew SignedXml(xmlDoc);

        // Add the key to the SignedXml document.
        signedDocument->SigningKey = key;

        // Create a reference to be signed.
        Reference^ referenceToBeSigned = gcnew Reference();
        referenceToBeSigned->Uri = "";

        // Add an enveloped transformation to the reference.
        referenceToBeSigned->AddTransform(
            gcnew XmlDsigEnvelopedSignatureTransform());

        // Add the reference to the SignedXml object.
        signedDocument->AddReference(referenceToBeSigned);

        if(File::Exists(Certificate))
        {
            // Create a new KeyInfo object.
            KeyInfo^ info = gcnew KeyInfo();

            // Load the X509 certificate.
            X509Certificate^ certFromFile =
                X509Certificate::CreateFromCertFile(Certificate);

            // Load the certificate into a KeyInfoX509Data object
            // and add it to the KeyInfo object.
            info->AddClause(gcnew KeyInfoX509Data(certFromFile));

            // Add the KeyInfo object to the SignedXml object.
            signedDocument->KeyInfo = info;
        }
        else
        {
            Console::WriteLine("Unable to locate the following file: "
 +
                Certificate);
        }

        // Compute the signature.
        signedDocument->ComputeSignature();

        // Add the signature branch to the original tree so it is enveloped.
        xmlDoc->DocumentElement->AppendChild(signedDocument->GetXml());
    }

    // Resolve the specified base and relative Uri's .
public:
    static Uri^ ResolveUris(Uri^ baseUri, String^ relativeUri)
    {
        XmlUrlResolver^ xmlResolver = gcnew XmlUrlResolver();
        xmlResolver->Credentials =
            System::Net::CredentialCache::DefaultCredentials;

        XmlDsigEnvelopedSignatureTransform^ xmlTransform =
            gcnew XmlDsigEnvelopedSignatureTransform();
        xmlTransform->Resolver = xmlResolver;

        Uri^ absoluteUri = xmlResolver->ResolveUri(baseUri, relativeUri);

        if (absoluteUri != nullptr)
        {
            Console::WriteLine(
                "\nResolved the base Uri and relative Uri
 to the following:");
            Console::WriteLine(absoluteUri->ToString());
        }
        else
        {
            Console::WriteLine(
                "Unable to resolve the base Uri and relative
 Uri");
        }
        return absoluteUri;
    }
};

[STAThread]
int main()
{
    // Encrypt an XML message
    XmlDocument^ productsXml = EnvelopedSignatureSample::LoadProducts();
    EnvelopedSignatureSample::ShowTransformProperties(productsXml);

    EnvelopedSignatureSample::SignDocument(productsXml);
    EnvelopedSignatureSample::ShowTransformProperties(productsXml);

    // Use XmlDsigEnvelopedSignatureTransform to resolve a Uri.
    Uri^ baseUri = gcnew Uri("http://www.contoso.com");
    String^ relativeUri = "xml";
    Uri^ absoluteUri = 
        EnvelopedSignatureSample::ResolveUris(baseUri, relativeUri);

    Console::WriteLine("This sample completed successfully; " +
        "press Enter to exit.");
    Console::ReadLine();
}

//
// This sample produces the following output:
//
// Xml representation of the current transform:
// <Transform Algorithm="http://www.w3.org/2000/09/xmldsig#enveloped-
// signature" xmlns="http://www.w3.org/2000/09/xmldsig#"
 />
// Result of the GetOutput method call from the current transform: <PRODUCTS>
// <PRODUCT><ID>123</ID><DESCRIPTION>Router</DESCRIPTION></PRODUCT><PRODUCT>
// <ID>456</ID><DESCRIPTION>Keyboard</DESCRIPTION></PRODUCT><PRODUCT><ID>789
// </ID><DESCRIPTION>Monitor</DESCRIPTION></PRODUCT></PRODUCTS>
// Unable to load the following file: ..\\my509.cer
//
// Xml representation of the current transform:
// <Transform Algorithm="http://www.w3.org/2000/09/xmldsig#enveloped-
// signature" xmlns="http://www.w3.org/2000/09/xmldsig#"
 />
// Result of the GetOutput method call from the current transform: <PRODUCTS>
// <PRODUCT><ID>123</ID><DESCRIPTION>Router</DESCRIPTION></PRODUCT><PRODUCT>
// <ID>456</ID><DESCRIPTION>Keyboard</DESCRIPTION></PRODUCT><PRODUCT><ID>789
// </ID><DESCRIPTION>Monitor</DESCRIPTION></PRODUCT><Signature
 xmlns=
// "http://www.w3.org/2000/09/xmldsig#"><SignedInfo><CanonicalizationMethod
// Algorithm="http://www.w3.org/TR/2001/REC-xml-c14n-20010315"
 />
// <SignatureMethod Algorithm="http://www.w3.org/2000/09/xmldsig#rsa-sha1"
 />
// <Reference URI=""><Transforms><Transform
 Algorithm="http://www.w3.org/2000
// /09/xmldsig#enveloped-signature" /></Transforms><DigestMethod
 Algorithm=
// "http://www.w3.org/2000/09/xmldsig#sha1" /><DigestValue>KvPW6HUiIUMEDS0YSoT
// gpo2JPbA=</DigestValue></Reference></SignedInfo><SignatureValue>c/njCGDru/a
// WAmWG83I+mWO040xOzxvmNx0b0o8ZyPc9j5VwApdAt103OGBtB1H6EkOvt7Ekw+PVuUo8m5LzLP
// yaTxUDMbb2kZZ5itSkGD4rmMUMUMuzrkAoquJZjxeOydBJ2CMehV2rE3RMPLIwRX176DZVy5JKU
// 6Cb7PR2Rpw=</SignatureValue></Signature></PRODUCTS>
//
// Resolved the base Uri and relative Uri to the following:
// http://www.contoso.com/xml
// This sample completed successfully; press Enter to exit.

import System.*;
import System.IO.*;
import System.Xml.*;
import System.Security.Cryptography.*;
import System.Security.Cryptography.Xml.*;
import System.Security.Cryptography.X509Certificates.*;

class Class1
{
    private static String certificate = "..\\..\\my509.cer";

    /** @attribute STAThread()
     */
    public static void main(String[]
 args)
    {
        // Encrypt an XML message
        XmlDocument productsXml = LoadProducts();
        ShowTransformProperties(productsXml);

        SignDocument(productsXml);
        ShowTransformProperties(productsXml);
        // Use XmlDsigEnvelopedSignatureTransform to resolve a Uri.
        Uri baseUri = new Uri("http://www.contoso.com");
        String relativeUri = "xml";
        Uri absoluteUri = ResolveUris(baseUri, relativeUri);

        Console.WriteLine("This sample completed successfully; " 
            + "press Enter to exit.");
        Console.ReadLine();
    } //main

    // Encrypt the text in the specified XmlDocument.
    private static void
 ShowTransformProperties(XmlDocument xmlDoc)
    {
        XmlDsigEnvelopedSignatureTransform xmlTransform 
            = new XmlDsigEnvelopedSignatureTransform();

        // Ensure the transform is using the proper algorithm.
        xmlTransform.set_Algorithm(
            SignedXml.XmlDsigEnvelopedSignatureTransformUrl);

        // Retrieve the XML representation of the current transform.
        XmlElement xmlInTransform = xmlTransform.GetXml();

        Console.WriteLine("\nXml representation of the current transform: ");
        Console.WriteLine(xmlInTransform.get_OuterXml());
        // Retrieve the valid input types for the current transform.
        Type validInTypes[] = xmlTransform.get_InputTypes();

        // Verify the xmlTransform can accept the XMLDocument as an
        // input type.
        for (int i = 0; i < validInTypes.get_Length();
 i++) {
            if (validInTypes.get_Item(i).Equals(xmlDoc.GetType()))
 {
                // Load the document into the transfrom.
                xmlTransform.LoadInput(xmlDoc);

                boolean includeComments = true;
                // This transform is created for demonstration purposes.
                XmlDsigEnvelopedSignatureTransform secondTransform 
                    = new XmlDsigEnvelopedSignatureTransform(includeComments);

                String classDescription = secondTransform.ToString();

                // This call does not perform as expected.
                // An enveloped signature has no inner XML elements
                secondTransform.LoadInnerXml(xmlDoc.SelectNodes("//."));
                break;
            }
        }
        Type validOutTypes[] = xmlTransform.get_OutputTypes();
        for (int i = validOutTypes.get_Length()
 - 1; i >= 0; i--) {
            if (validOutTypes.get_Item(i).Equals(System.Xml.
                XmlDocument.class.ToType())) {
                try {
                    Type xmlDocumentType = System.Xml.XmlDocument.
                        class.ToType();
                    XmlDocument xmlDocumentOutput = (XmlDocument)xmlTransform.
                        GetOutput(xmlDocumentType);

                    // Display to the console the Xml before and after
                    // encryption.
                    Console.WriteLine("Result of the GetOutput method call"
 
                        + " from the current transform: " 
                        + xmlDocumentOutput.get_OuterXml());
                }
                catch (System.Exception ex) {
                    Console.WriteLine("Unexpected exception caught: " 
                        + ex.ToString());
                }
                break;
            }
            else {
                if (validOutTypes.get_Item(i).Equals(System.Xml.
                    XmlNodeList.class.ToType())) {
                    try {
                        Type xmlNodeListType = System.Xml.
                            XmlNodeList.class.ToType();
                        XmlNodeList xmlNodes = (XmlNodeList)xmlTransform.
                            GetOutput(xmlNodeListType);
                        // Display to the console the Xml before and
 after
                        // encryption.
                        Console.WriteLine("Encoding the following message: "
 
                            + xmlDoc.get_InnerText());

                        Console.WriteLine("Nodes of the XmlNodeList retrieved
 " 
                            + "from GetOutput:");
                        for (int j = 0; j <
 xmlNodes.get_Count(); j++) {
                            Console.WriteLine("Node " + j 
                                + " has the following name: " 
                                + xmlNodes.Item(j).get_Name() 
                                + " and the following InnerXml: " 
                                + xmlNodes.Item(j).get_InnerXml());
                        }
                    }
                    catch (System.Exception ex) {
                        Console.WriteLine("Unexpected exception caught: "
 
                            + ex.ToString());
                    }
                    break;
                }
                else {
                    Object outputObject = xmlTransform.GetOutput();
                } 
            }
        }
    } //ShowTransformProperties

    // Create an XML document describing various products.
    private static XmlDocument LoadProducts()
    {
        XmlDocument xmlDoc = new XmlDocument();

        String contosoProducts = "<PRODUCTS>";
        contosoProducts += "<PRODUCT><ID>123</ID>";
        contosoProducts += "<DESCRIPTION>Router</DESCRIPTION></PRODUCT>";
        contosoProducts += "<PRODUCT><ID>456</ID>";
        contosoProducts += "<DESCRIPTION>Keyboard</DESCRIPTION></PRODUCT>";
        contosoProducts += "<PRODUCT><ID>789</ID>";
        contosoProducts += "<DESCRIPTION>Monitor</DESCRIPTION></PRODUCT>";
        contosoProducts += "</PRODUCTS>";

        xmlDoc.LoadXml(contosoProducts);
        return xmlDoc;
    } //LoadProducts

    // Create a signature and add it to the specified document.
    private static void
 SignDocument(XmlDocument xmlDoc)
    {
        // Generate a signing key.
        RSACryptoServiceProvider key = new RSACryptoServiceProvider();
        // Create a SignedXml object.
        SignedXml signedXml = new SignedXml(xmlDoc);
        // Add the key to the SignedXml document. 
        signedXml.set_SigningKey(key);
        // Create a reference to be signed.
        Reference reference = new Reference();
        reference.set_Uri("");
        // Add an enveloped transformation to the reference.
        reference.AddTransform(new XmlDsigEnvelopedSignatureTransform());
        // Add the reference to the SignedXml object.
        signedXml.AddReference(reference);

        try {
            // 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);
        }
        catch (FileNotFoundException ex) {
            Console.WriteLine("Unable to locate the following file: " 
                + certificate);
        }
        // Compute the signature.
        signedXml.ComputeSignature();
        // Add the signature branch to the original tree so it is enveloped.
        xmlDoc.get_DocumentElement().AppendChild(signedXml.GetXml());
    } //SignDocument

    // Resolve the specified base and relative Uri's .
    private static Uri ResolveUris(Uri baseUri,
 String relativeUri)
    {
        XmlUrlResolver xmlResolver = new XmlUrlResolver();
        xmlResolver.set_Credentials(System.Net.CredentialCache.
            get_DefaultCredentials());
        XmlDsigEnvelopedSignatureTransform xmlTransform 
            = new XmlDsigEnvelopedSignatureTransform();
        xmlTransform.set_Resolver(xmlResolver);

        Uri absoluteUri = xmlResolver.ResolveUri(baseUri, relativeUri);

        if (absoluteUri != null) {
            Console.WriteLine("\nResolved the base Uri and
 relative "
                + "Uri to the following:");
            Console.WriteLine(absoluteUri.ToString());
        }
        else {
            Console.WriteLine("Unable to resolve the base
 "
                + "Uri and relative Uri");
        }
        return absoluteUri;
    } //ResolveUris
} //Class1
//
// This sample produces the following output:
//
// Xml representation of the current transform: 
// <Transform Algorithm="http://www.w3.org/2000/09/xmldsig#enveloped-
// signature" xmlns="http://www.w3.org/2000/09/xmldsig#"
 />
// Result of the GetOutput method call from the current transform: <PRODUCTS>
// <PRODUCT><ID>123</ID><DESCRIPTION>Router</DESCRIPTION></PRODUCT><PRODUCT>
// <ID>456</ID><DESCRIPTION>Keyboard</DESCRIPTION></PRODUCT><PRODUCT><ID>789
// </ID><DESCRIPTION>Monitor</DESCRIPTION></PRODUCT></PRODUCTS>
// Unable to load the following file: ..\\my509.cer
// 
// Xml representation of the current transform: 
// <Transform Algorithm="http://www.w3.org/2000/09/xmldsig#enveloped-
// signature" xmlns="http://www.w3.org/2000/09/xmldsig#"
 />
// Result of the GetOutput method call from the current transform: <PRODUCTS>
// <PRODUCT><ID>123</ID><DESCRIPTION>Router</DESCRIPTION></PRODUCT><PRODUCT>
// <ID>456</ID><DESCRIPTION>Keyboard</DESCRIPTION></PRODUCT><PRODUCT><ID>789
// </ID><DESCRIPTION>Monitor</DESCRIPTION></PRODUCT><Signature
 xmlns=
// "http://www.w3.org/2000/09/xmldsig#"><SignedInfo><CanonicalizationMethod
 
// Algorithm="http://www.w3.org/TR/2001/REC-xml-c14n-20010315"
 />
// <SignatureMethod Algorithm="http://www.w3.org/2000/09/xmldsig#rsa-sha1"
 />
// <Reference URI=""><Transforms><Transform
 Algorithm="http://www.w3.org/2000
// /09/xmldsig#enveloped-signature" /></Transforms><DigestMethod
 Algorithm=
// "http://www.w3.org/2000/09/xmldsig#sha1" /><DigestValue>KvPW6HUiIUMEDS0YSoT
// gpo2JPbA=</DigestValue></Reference></SignedInfo><SignatureValue>c/njCGDru/a
// WAmWG83I+mWO040xOzxvmNx0b0o8ZyPc9j5VwApdAt103OGBtB1H6EkOvt7Ekw+PVuUo8m5LzLP
// yaTxUDMbb2kZZ5itSkGD4rmMUMUMuzrkAoquJZjxeOydBJ2CMehV2rE3RMPLIwRX176DZVy5JKU
// 6Cb7PR2Rpw=</SignatureValue></Signature></PRODUCTS>
// 
// Resolved the base Uri and relative Uri to the following:
// http://www.contoso.com/xml
// This sample completed successfully; press Enter to exit.

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
SignedXml クラス
SignedXml メンバ
System.Security.Cryptography.Xml 名前空間

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