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DSASignatureDeformatter Constructor

Initializes a new instance of the DSASignatureDeformatter class.

Namespace:  System.Security.Cryptography
Assembly:  mscorlib (in mscorlib.dll)


#using <System.dll>

using namespace System;
using namespace System::Security::Cryptography;
int main()

      //Create a new instance of DSACryptoServiceProvider.
      DSACryptoServiceProvider^ DSA = gcnew DSACryptoServiceProvider;

      //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  
      //DSACryptoServiceProvider 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  
      //DSACryptoServiceProvider 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." );
         Console::WriteLine( "The signature was not verified." );
   catch ( CryptographicException^ e ) 
      Console::WriteLine( e->Message );


.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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