DSASignatureFormatter.CreateSignature(Byte[]) Method
Definition
Important
Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.
Creates the Digital Signature Algorithm (DSA) PKCS #1 signature for the specified data.
public:
override cli::array <System::Byte> ^ CreateSignature(cli::array <System::Byte> ^ rgbHash);
public override byte[] CreateSignature (byte[] rgbHash);
override this.CreateSignature : byte[] -> byte[]
Public Overrides Function CreateSignature (rgbHash As Byte()) As Byte()
Parameters
- rgbHash
- Byte[]
The data to be signed.
Returns
Byte[]
The digital signature for the specified data.
Exceptions
rgbHash
is null
.
Examples
#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
Remarks
The resulting signature data can be verified by using VerifySignature.
Applies to
See also
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