DSASignatureDeformatter.VerifySignature(Byte[], Byte[]) Metode
Definisi
Penting
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Memverifikasi tanda tangan Algoritma Tanda Tangan Digital (DSA) pada data.
public:
override bool VerifySignature(cli::array <System::Byte> ^ rgbHash, cli::array <System::Byte> ^ rgbSignature);
public override bool VerifySignature (byte[] rgbHash, byte[] rgbSignature);
override this.VerifySignature : byte[] * byte[] -> bool
Public Overrides Function VerifySignature (rgbHash As Byte(), rgbSignature As Byte()) As Boolean
Parameter
- rgbHash
- Byte[]
Data ditandatangani dengan rgbSignature
.
- rgbSignature
- Byte[]
Tanda tangan yang akan diverifikasi untuk rgbHash
.
Mengembalikan
true
jika tanda tangan valid untuk data; jika tidak, false
.
Pengecualian
Kunci DSA hilang.
Contoh
#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
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