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DSASignatureDeformatter Klasse

Definition

Überprüft eine DSA-Signatur (Digital Signature Algorithm) für PKCS#1 v1.5.

public ref class DSASignatureDeformatter : System::Security::Cryptography::AsymmetricSignatureDeformatter
[System.Runtime.Versioning.UnsupportedOSPlatform("browser")]
public class DSASignatureDeformatter : System.Security.Cryptography.AsymmetricSignatureDeformatter
public class DSASignatureDeformatter : System.Security.Cryptography.AsymmetricSignatureDeformatter
[System.Runtime.InteropServices.ComVisible(true)]
public class DSASignatureDeformatter : System.Security.Cryptography.AsymmetricSignatureDeformatter
[<System.Runtime.Versioning.UnsupportedOSPlatform("browser")>]
type DSASignatureDeformatter = class
    inherit AsymmetricSignatureDeformatter
type DSASignatureDeformatter = class
    inherit AsymmetricSignatureDeformatter
[<System.Runtime.InteropServices.ComVisible(true)>]
type DSASignatureDeformatter = class
    inherit AsymmetricSignatureDeformatter
Public Class DSASignatureDeformatter
Inherits AsymmetricSignatureDeformatter
Vererbung
DSASignatureDeformatter
Attribute

Beispiele

#using <System.dll>

using namespace System;
using namespace System::Security::Cryptography;
int main()
{
   try
   {
      
      //Create a new instance of DSA.
      DSA^ DSA = DSA::Create();
      
      //The hash to sign.
      array<Byte>^Hash = {59,4,248,102,77,97,142,201,210,12,224,93,25,41,100,197,213,134,130,135};
      
      //Create an DSASignatureFormatter object and pass it the 
      //DSA instance to transfer the key information.
      DSASignatureFormatter^ DSAFormatter = gcnew DSASignatureFormatter( DSA );
      
      //Set the hash algorithm to SHA1.
      DSAFormatter->SetHashAlgorithm( "SHA1" );
      
      //Create a signature for HashValue and return it.
      array<Byte>^SignedHash = DSAFormatter->CreateSignature( Hash );
      
      //Create an DSASignatureDeformatter object and pass it the 
      //DSA instance to transfer the key information.
      DSASignatureDeformatter^ DSADeformatter = gcnew DSASignatureDeformatter( DSA );
      
      //Verify the hash and display the results to the console.
      if ( DSADeformatter->VerifySignature( Hash, SignedHash ) )
      {
         Console::WriteLine( "The signature was verified." );
      }
      else
      {
         Console::WriteLine( "The signature was not verified." );
      }
   }
   catch ( CryptographicException^ e ) 
   {
      Console::WriteLine( e->Message );
   }

}
using System;
using System.Security.Cryptography;

class DSASample
{
        
    static void Main()
    {
        try
        {
            //Create a new instance of DSA.
            DSA DSA = DSA.Create();

            //The hash to sign.
            byte[] Hash = {59,4,248,102,77,97,142,201,210,12,224,93,25,41,100,197,213,134,130,135};

            //Create an DSASignatureFormatter object and pass it the 
            //DSA instance to transfer the key information.
            DSASignatureFormatter DSAFormatter = new DSASignatureFormatter(DSA);

            //Set the hash algorithm to SHA1.
            DSAFormatter.SetHashAlgorithm("SHA1");

            //Create a signature for HashValue and return it.
            byte[] SignedHash = DSAFormatter.CreateSignature(Hash);

            //Create an DSASignatureDeformatter object and pass it the 
            //DSA instance to transfer the key information.
            DSASignatureDeformatter DSADeformatter = new DSASignatureDeformatter(DSA);

            //Verify the hash and display the results to the console.
            if(DSADeformatter.VerifySignature(Hash, SignedHash))
            {
                Console.WriteLine("The signature was verified.");
            }
            else
            {
                Console.WriteLine("The signature was not verified.");
            }
        }
        catch(CryptographicException e)
        {
            Console.WriteLine(e.Message);
        }
    }
}
Imports System.Security.Cryptography

 _

Class DSASample


    Shared Sub Main()
        Try
            'Create a new instance of DSA.
            Dim DSA As DSA = DSA.Create()

            'The hash to sign.
            Dim Hash As Byte() = {59, 4, 248, 102, 77, 97, 142, 201, 210, 12, 224, 93, 25, 41, 100, 197, 213, 134, 130, 135}

            'Create an DSASignatureFormatter object and pass it the 
            'DSA instance to transfer the key information.
            Dim DSAFormatter As New DSASignatureFormatter(DSA)

            'Set the hash algorithm to SHA1.
            DSAFormatter.SetHashAlgorithm("SHA1")

            'Create a signature for HashValue and return it.
            Dim SignedHash As Byte() = DSAFormatter.CreateSignature(Hash)

            'Create an DSASignatureDeformatter object and pass it the 
            'DSA instance to transfer the key information.
            Dim DSADeformatter As New DSASignatureDeformatter(DSA)

            'Verify the hash and display the results to the console.
            If DSADeformatter.VerifySignature(Hash, SignedHash) Then
                Console.WriteLine("The signature was verified.")
            Else
                Console.WriteLine("The signature was not verified.")
            End If

        Catch e As CryptographicException
            Console.WriteLine(e.Message)
        End Try
    End Sub
End Class

Hinweise

Wichtig

Die Entwickler des DSA-Algorithmus haben ihre Unterstützung dafür zurückgezogen. Erwägen Sie, anstelle der RSA -Klasse die ECDsa -Klasse oder -Klasse zu DSA verwenden. Verwenden Sie DSA nur zur Kompatibilität mit Legacyanwendungen und -daten.

Konstruktoren

DSASignatureDeformatter()

Initialisiert eine neue Instanz der DSASignatureDeformatter-Klasse.

DSASignatureDeformatter(AsymmetricAlgorithm)

Initialisiert eine neue Instanz der DSASignatureDeformatter-Klasse mit dem angegebenen Schlüssel.

Methoden

Equals(Object)

Bestimmt, ob das angegebene Objekt gleich dem aktuellen Objekt ist.

(Geerbt von Object)
GetHashCode()

Fungiert als Standardhashfunktion.

(Geerbt von Object)
GetType()

Ruft den Type der aktuellen Instanz ab.

(Geerbt von Object)
MemberwiseClone()

Erstellt eine flache Kopie des aktuellen Object.

(Geerbt von Object)
SetHashAlgorithm(String)

Gibt den Hashalgorithmus für das Deformatierungsprogramm für DSA-Signaturen (Digital Signature Algorithm) an.

SetKey(AsymmetricAlgorithm)

Gibt den Schlüssel für das Deformatierungsprogramm für DSA-Signaturen (Digital Signature Algorithm) an.

ToString()

Gibt eine Zeichenfolge zurück, die das aktuelle Objekt darstellt.

(Geerbt von Object)
VerifySignature(Byte[], Byte[])

Überprüft die DSA-Signatur (Digital Signature Algorithm) für die Daten.

VerifySignature(HashAlgorithm, Byte[])

Überprüft die Signatur aus dem angegebenen Hashwert.

(Geerbt von AsymmetricSignatureDeformatter)

Gilt für:

Weitere Informationen