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DSASignatureFormatter Class

Creates a Digital Signature Algorithm (DSA) PKCS#1 v1.5 signature.

For a list of all members of this type, see DSASignatureFormatter Members.

System.Object
   System.Security.Cryptography.AsymmetricSignatureFormatter
      System.Security.Cryptography.DSASignatureFormatter

[Visual Basic]
Public Class DSASignatureFormatter
   Inherits AsymmetricSignatureFormatter
[C#]
public class DSASignatureFormatter : AsymmetricSignatureFormatter
[C++]
public __gc class DSASignatureFormatter : public
   AsymmetricSignatureFormatter
[JScript]
public class DSASignatureFormatter extends
   AsymmetricSignatureFormatter

Thread Safety

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

Example

[Visual Basic] 
Imports System
Imports System.Security.Cryptography

 _

Class DSASample


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

            '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 
            'DSACryptoServiceProvider 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

[C#] 
using System;
using System.Security.Cryptography;

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

            //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 
            //DSACryptoServiceProvider 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);
        }
    }

}

[C++] 
#using <mscorlib.dll>
#using <System.dll>

using namespace System;
using namespace System::Security::Cryptography;

int main() {
    try {
        //Create a new instance of DSACryptoServiceProvider.
        DSACryptoServiceProvider* DSA = new DSACryptoServiceProvider();

        //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 
        //DSACryptoServiceProvider to transfer the key information.
        DSASignatureFormatter* DSAFormatter = new DSASignatureFormatter(DSA);

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

        //Create a signature for HashValue and return it.
        Byte SignedHash[] = DSAFormatter->CreateSignature(Hash);
    } catch (CryptographicException* e) {
        Console::WriteLine(e->Message);
    }
}

[JScript] No example is available for JScript. To view a Visual Basic, C#, or C++ example, click the Language Filter button Language Filter in the upper-left corner of the page.

Requirements

Namespace: System.Security.Cryptography

Platforms: Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 family

Assembly: Mscorlib (in Mscorlib.dll)

See Also

DSASignatureFormatter Members | System.Security.Cryptography Namespace | Cryptographic Services

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