DSAKeyValue コンストラクタ

.NET Framework クラス ライブラリ リファレンス

DSAKeyValue コンストラクタ (DSA)

指定した DSA 公開キーを使用して、DSAKeyValue 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 ( _
    key As DSA _
)

Visual Basic (使用法)

Dim key As DSA

Dim instance As New DSAKeyValue(key)

C#

public DSAKeyValue (
    DSA key
)

C++

public:
DSAKeyValue (
    DSA^ key
)

J#

public DSAKeyValue (
    DSA key
)

JScript

public function DSAKeyValue (
    key : DSA
)

パラメータ

key

公開キーを保持している DSA クラスの実装のインスタンス。

使用例

XML 暗号化における DSAKeyValue クラスの使用方法を次のコード例に示します。

Visual Basic

' Sign an XML file and save the signature in a new file.
Public Shared Sub SignDetachedResource(URIString
 As String, XmlSigFileName As
 String, DSAKey As DSA)
   ' Create a SignedXml object.
   Dim signedXml As New
 SignedXml()
   
   ' Assign the DSA key to the SignedXml object.
   signedXml.SigningKey = DSAKey
   
   ' Create a reference to be signed.
   Dim reference As New
 Reference()
   
   ' Add the passed URI to the reference object.
   reference.Uri = URIString
   
   ' Add the reference to the SignedXml object.
   signedXml.AddReference(reference)
   
   ' Add a DSAKeyValue to the KeyInfo (optional; helps recipient find
 key to validate).
   Dim keyInfo As New KeyInfo()
   keyInfo.AddClause(New DSAKeyValue(CType(DSAKey, DSA)))
   signedXml.KeyInfo = keyInfo
   
   ' Compute the signature.
   signedXml.ComputeSignature()
   
   ' Get the XML representation of the signature and save
   ' it to an XmlElement object.
   Dim xmlDigitalSignature As XmlElement =
 signedXml.GetXml()
   
   ' Save the signed XML document to a file specified
   ' using the passed string.
   Dim xmltw As New XmlTextWriter(XmlSigFileName,
 New UTF8Encoding(False))
   xmlDigitalSignature.WriteTo(xmltw)
   xmltw.Close()
End Sub 

C#

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

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

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

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

    // Add a DSAKeyValue to the KeyInfo (optional; helps recipient find
 key to validate).
    KeyInfo keyInfo = new KeyInfo();
    keyInfo.AddClause(new DSAKeyValue((DSA)DSAKey));    
    signedXml.KeyInfo = keyInfo;

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

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

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

C++

// Sign an XML file and save the signature in a new file.
void SignDetachedResource( String^ URIString, String^ XmlSigFileName,
 DSA^ DSAKey )
{
   
   // Create a SignedXml Object*.
   SignedXml^ signedXml = gcnew SignedXml;
   
   // Assign the DSA key to the SignedXml object.
   signedXml->SigningKey = DSAKey;
   
   // Create a reference to be signed.
   Reference^ reference = gcnew Reference;
   
   // Add the passed URI to the reference object.
   reference->Uri = URIString;
   
   // Add the reference to the SignedXml object.
   signedXml->AddReference( reference );
   
   // Add a DSAKeyValue to the KeyInfo (optional; helps recipient find
 key to validate).
   KeyInfo^ keyInfo = gcnew KeyInfo;
   keyInfo->AddClause( gcnew DSAKeyValue( safe_cast<DSA^>(DSAKey) ) );
   signedXml->KeyInfo = keyInfo;
   
   // Compute the signature.
   signedXml->ComputeSignature();
   
   // Get the XML representation of the signature and save
   // it to an XmlElement object.
   XmlElement^ xmlDigitalSignature = signedXml->GetXml();
   
   // Save the signed XML document to a file specified
   // using the passed string.
   XmlTextWriter^ xmltw = gcnew XmlTextWriter( XmlSigFileName,gcnew UTF8Encoding(
 false ) );
   xmlDigitalSignature->WriteTo( xmltw );
   xmltw->Close();
}

J#

// Sign an XML file and save the signature in a new file.
public static void SignDetachedResource(String
 uriString, 
    String xmlSigFileName, DSA dsaKey) 
{
    // Create a SignedXml object.
    SignedXml signedXml =  new SignedXml();
    
    // Assign the DSA key to the SignedXml object.
    signedXml.set_SigningKey ( dsaKey);
    
    // Create a reference to be signed.
    Reference reference =  new Reference();
    
    // Add the passed URI to the reference object.
    reference.set_Uri ( uriString);
    
    // Add a transformation if the URI is an XML file.
    if (uriString.EndsWith("xml")) {
        reference.AddTransform(new XmlDsigC14NTransform());
    }
    
    // Add the reference to the SignedXml object.
    signedXml.AddReference(reference);
    
    // Add a DSAKeyValue to the KeyInfo (optional; 
    // helps recipient find key to validate).
    KeyInfo keyInfo =  new KeyInfo();
    keyInfo.AddClause(new DSAKeyValue(((DSA)(dsaKey))));
    signedXml.set_KeyInfo ( keyInfo);
    
    // Compute the signature.
    signedXml.ComputeSignature();
    
    // Get the XML representation of the signature and save
    // it to an XmlElement object.
    XmlElement xmlDigitalSignature = signedXml.GetXml();
    
    // Save the signed XML document to a file specified
    // using the passed string.
    XmlTextWriter xmlTW =  
        new XmlTextWriter(xmlSigFileName, new
 UTF8Encoding(false));
    xmlDigitalSignature.WriteTo(xmlTW);
    xmlTW.Close();
} //SignDetachedResource   

Visual Basic

' Sign an XML file and save the signature in a new file.
Public Shared Sub SignXmlFile(FileName
 As String, SignedFileName As
 String, DSAKey As DSA)
   ' 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 DSA key to the SignedXml document. 
   signedXml.SigningKey = DSAKey
   
   ' Create a reference to be signed.
   Dim reference As New
 Reference()
   reference.Uri = ""
   
   ' Add a transformation to the reference.
   Dim trns = New XmlDsigC14NTransform()
   reference.AddTransform(trns)
   
   ' Add an enveloped transformation to the reference.
   Dim env As New XmlDsigEnvelopedSignatureTransform()
   reference.AddTransform(env)
   
   ' Add the reference to the SignedXml object.
   signedXml.AddReference(reference)
   
   
   ' Add a DSAKeyValue to the KeyInfo (optional; helps recipient find
 key to validate).
   Dim keyInfo As New KeyInfo()
   keyInfo.AddClause(New DSAKeyValue(CType(DSAKey, DSA)))
   signedXml.KeyInfo = keyInfo
   
   ' Compute the signature.
   signedXml.ComputeSignature()
   
   ' Get the XML representation of the signature and save
   ' it to an XmlElement object.
   Dim xmlDigitalSignature As XmlElement =
 signedXml.GetXml()
   
   ' Append the element to the XML document.
   doc.DocumentElement.AppendChild(doc.ImportNode(xmlDigitalSignature, True))
   
   
   If TypeOf doc.FirstChild Is
 XmlDeclaration Then
      doc.RemoveChild(doc.FirstChild)
   End If
   
   ' Save the signed XML document to a file specified
   ' using the passed string.
   Dim xmltw As New XmlTextWriter(SignedFileName,
 New UTF8Encoding(False))
   doc.WriteTo(xmltw)
   xmltw.Close()
End Sub 

C#

// Sign an XML file and save the signature in a new file.
public static void SignXmlFile(string
 FileName, string SignedFileName, DSA DSAKey)
{
    // 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 DSA key to the SignedXml document. 
    signedXml.SigningKey = DSAKey;

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

    // Add a transformation to the reference.
    Transform trns = new XmlDsigC14NTransform();
    reference.AddTransform(trns);

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

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

    
    // Add a DSAKeyValue to the KeyInfo (optional; helps recipient find
 key to validate).
    KeyInfo keyInfo = new KeyInfo();
    keyInfo.AddClause(new DSAKeyValue((DSA)DSAKey));
    signedXml.KeyInfo = keyInfo;

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

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

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

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

C++

// Sign an XML file and save the signature in a new file.
void SignXmlFile( String^ FileName, String^ SignedFileName, DSA^
 DSAKey )
{
   
   // Create a new XML document.
   XmlDocument^ doc = gcnew XmlDocument;
   
   // Format the document to ignore white spaces.
   doc->PreserveWhitespace = false;
   
   // Load the passed XML file using its name.
   doc->Load( gcnew XmlTextReader( FileName ) );
   
   // Create a SignedXml object.
   SignedXml^ signedXml = gcnew SignedXml( doc );
   
   // Add the DSA key to the SignedXml document. 
   signedXml->SigningKey = DSAKey;
   
   // Create a reference to be signed.
   Reference^ reference = gcnew Reference;
   reference->Uri = "";
   
   // Add a transformation to the reference.
   Transform^ trns = gcnew XmlDsigC14NTransform;
   reference->AddTransform( trns );
   
   // Add an enveloped transformation to the reference.
   XmlDsigEnvelopedSignatureTransform^ env = gcnew XmlDsigEnvelopedSignatureTransform;
   reference->AddTransform( env );
   
   // Add the reference to the SignedXml object.
   signedXml->AddReference( reference );
   
   // Add a DSAKeyValue to the KeyInfo (optional; helps recipient find
 key to validate).
   KeyInfo^ keyInfo = gcnew KeyInfo;
   keyInfo->AddClause( gcnew DSAKeyValue( safe_cast<DSA^>(DSAKey) ) );
   signedXml->KeyInfo = keyInfo;
   
   // Compute the signature.
   signedXml->ComputeSignature();
   
   // Get the XML representation of the signature and save
   // it to an XmlElement object.
   XmlElement^ xmlDigitalSignature = signedXml->GetXml();
   
   // Append the element to the XML document.
   doc->DocumentElement->AppendChild( doc->ImportNode( xmlDigitalSignature,
 true ) );
   if ( (doc->FirstChild)->GetType() == XmlDeclaration::typeid
 )
   {
      doc->RemoveChild( doc->FirstChild );
   }

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

プラットフォーム

Windows 98, Windows 2000 SP4, Windows Millennium Edition, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

開発プラットフォームの中には、.NET Framework によってサポートされていないバージョンがあります。サポートされているバージョンについては、「システム要件」を参照してください。

バージョン情報

.NET Framework
サポート対象 : 2.0、1.1、1.0

参照

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

DSAKeyValue コンストラクタ

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

名前	説明
DSAKeyValue ()	ランダムに生成された新しい DSA 公開キーを使用して、DSAKeyValue クラスの新しいインスタンスを初期化します。
DSAKeyValue (DSA)	指定した DSA 公開キーを使用して、DSAKeyValue クラスの新しいインスタンスを初期化します。

参照

関連項目

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

DSAKeyValue コンストラクタ ()

ランダムに生成された新しい DSA 公開キーを使用して、DSAKeyValue 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 DSAKeyValue

C#

public DSAKeyValue ()

C++

public:
DSAKeyValue ()

J#

public DSAKeyValue ()

JScript

public function DSAKeyValue ()

解説

新しい DSA キーを作成する場合、このコンストラクタは、CryptoConfig クラスによって定義された DSA の既定の実装を使用します。

プラットフォーム

Windows 98, Windows 2000 SP4, Windows Millennium Edition, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

開発プラットフォームの中には、.NET Framework によってサポートされていないバージョンがあります。サポートされているバージョンについては、「システム要件」を参照してください。

バージョン情報

.NET Framework
サポート対象 : 2.0、1.1、1.0

参照

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