KeyInfoX509Data Classe

Definizione

Spazio dei nomi:

System.Security.Cryptography.Xml

Assembly:

System.Security.Cryptography.Xml.dll

Rappresenta un sottoelemento <X509Data> di un elemento <KeyInfo> XMLDSIG o della crittografia XML.

public ref class KeyInfoX509Data : System::Security::Cryptography::Xml::KeyInfoClause

public class KeyInfoX509Data : System.Security.Cryptography.Xml.KeyInfoClause

type KeyInfoX509Data = class
    inherit KeyInfoClause

Public Class KeyInfoX509Data
Inherits KeyInfoClause

Ereditarietà

Object

KeyInfoClause

KeyInfoX509Data

Esempio

In questa sezione sono riportati due esempi di codice. Il primo esempio illustra come firmare un file XML usando una firma scollegata. Il secondo esempio illustra come firmare un file XML usando una firma della busta.

Esempio #1

//
// This example signs a file specified by a URI 
// using a detached signature. It then verifies  
// the signed XML.
//
#using <System.Security.dll>
#using <System.Xml.dll>

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

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



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

}

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

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

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

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

        try
        {

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

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

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

            Console.WriteLine("XML signature was successfully computed and saved to {0}.", XmlFileName);
        }
        catch(CryptographicException e)
        {
            Console.WriteLine(e.Message);
        }
    }

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

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

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

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

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

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

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

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

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

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





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

Esempio #2

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

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

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

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


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

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

   return 0;
}

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

public class SignVerifyEnvelope
{

    public static void Main(String[] args)
    {

        string Certificate =  "microsoft.cer";

        try
        {
            // Generate a signing key.
            RSA Key = RSA.Create();

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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



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

Commenti

La KeyInfoX509Data classe rappresenta l'elemento <X509Data> che contiene informazioni sul certificato X.509v3 correlate alla convalida o alla chiave di crittografia. Ad esempio, un <X509Data> elemento potrebbe contenere un certificato X.509 la cui chiave pubblica soggetto è la chiave di convalida o una catena di certificati X.509 che terminano in un certificato per la convalida della chiave o altri identificatori per i certificati X.509 correlati.

Usare la KeyInfoX509Data classe ogni volta che è necessario includere i dati del certificato X.509 in un documento XML crittografato o firmato.

Per altre informazioni sull'elemento <X509Data> , vedere La sezione 4.4.4 della specifica XMLDSIG o la specifica di crittografia XML, disponibile nel sito Web W3C.

Costruttori

KeyInfoX509Data()	Inizializza una nuova istanza della classe KeyInfoX509Data.
KeyInfoX509Data(Byte[])	Consente di inizializzare una nuova istanza della classe KeyInfoX509Data utilizzando la codifica ASN.1 DER di un certificato X.509v3.
KeyInfoX509Data(X509Certificate, X509IncludeOption)	Consente di inizializzare una nuova istanza della classe KeyInfoX509Data utilizzando il certificato X.509v3 specificato.
KeyInfoX509Data(X509Certificate)	Consente di inizializzare una nuova istanza della classe KeyInfoX509Data utilizzando il certificato X.509v3 specificato.

Proprietà

Certificates	Ottiene l'elenco dei certificati X.509v3 contenuti nell'oggetto KeyInfoX509Data.
CRL	Ottiene o imposta l'elenco CRL (Certificate Revocation List) contenuto nell'oggetto KeyInfoX509Data.
IssuerSerials	Ottiene un elenco delle strutture X509IssuerSerial che rappresentano la coppia nome emittente/numero di serie.
SubjectKeyIds	Ottiene un elenco degli identificatori SKI (Subject Key Identifier) contenuti nell'oggetto KeyInfoX509Data.
SubjectNames	Ottiene un elenco dei nomi oggetto delle entità contenute nell'oggetto KeyInfoX509Data.

Metodi

AddCertificate(X509Certificate)	Consente di aggiungere il certificato X.509v3 specificato all'oggetto KeyInfoX509Data.
AddIssuerSerial(String, String)	Consente di aggiungere la coppia nome emittente/numero di serie specificata all'oggetto KeyInfoX509Data.
AddSubjectKeyId(Byte[])	Consente di aggiungere la matrice di byte dell'identificatore SKI (Subject Key Identifier) all'oggetto KeyInfoX509Data.
AddSubjectKeyId(String)	Consente di aggiungere la stringa dell'identificatore SKI specificato all'oggetto KeyInfoX509Data.
AddSubjectName(String)	Consente di aggiungere all'oggetto KeyInfoX509Data il nome oggetto dell'entità a cui è stato rilasciato un certificato X.509v3.
Equals(Object)	Determina se l'oggetto specificato è uguale all'oggetto corrente. (Ereditato da Object)
GetHashCode()	Funge da funzione hash predefinita. (Ereditato da Object)
GetType()	Ottiene l'oggetto Type dell'istanza corrente. (Ereditato da Object)
GetXml()	Restituisce una rappresentazione XML dell'oggetto KeyInfoX509Data.
LoadXml(XmlElement)	Consente di analizzare l'oggetto XmlElement di input e di configurare lo stato interno dell'oggetto KeyInfoX509Data di conseguenza.
MemberwiseClone()	Crea una copia superficiale dell'oggetto Object corrente. (Ereditato da Object)
ToString()	Restituisce una stringa che rappresenta l'oggetto corrente. (Ereditato da Object)