DSASignatureFormatter Costruttori

Definizione

Spazio dei nomi:

System.Security.Cryptography

Assembly:

System.Security.Cryptography.dll

Inizializza una nuova istanza della classe DSASignatureFormatter.

Overload

DSASignatureFormatter()	Inizializza una nuova istanza della classe DSASignatureFormatter.
DSASignatureFormatter(AsymmetricAlgorithm)	Inizializza una nuova istanza della classe DSASignatureFormatter con la chiave specificata.

DSASignatureFormatter()

Origine:

DSASignatureFormatter.cs

Inizializza una nuova istanza della classe DSASignatureFormatter.

public:
 DSASignatureFormatter();

public DSASignatureFormatter ();

Public Sub New ()

Vedi anche

• servizi crittografici

DSASignatureFormatter(AsymmetricAlgorithm)

Origine:

DSASignatureFormatter.cs

Inizializza una nuova istanza della classe DSASignatureFormatter con la chiave specificata.

public:
 DSASignatureFormatter(System::Security::Cryptography::AsymmetricAlgorithm ^ key);

public DSASignatureFormatter (System.Security.Cryptography.AsymmetricAlgorithm key);

new System.Security.Cryptography.DSASignatureFormatter : System.Security.Cryptography.AsymmetricAlgorithm -> System.Security.Cryptography.DSASignatureFormatter

Public Sub New (key As AsymmetricAlgorithm)

Parametri

key

AsymmetricAlgorithm

Istanza della classe DSA (Digital Signature Algorithm) che conserva la chiave.

Eccezioni

ArgumentNullException

key è null.

Esempio

#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 );
   }
   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);
        }
        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)

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

Vedi anche

• servizi crittografici