DSASignatureFormatter.CreateSignature(Byte[]) Metod
Definition
Viktigt
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Skapar PKCS #1-signaturen (DSADigital Signature Algorithm) för angivna 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()Parametrar
- rgbHash
- Byte[]
De data som ska signeras.
Returer
Byte[]
Den digitala signaturen för angivna data.
Undantag
rgbHash är null.
Exempel
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
Kommentarer
Resulterande signaturdata kan verifieras med hjälp VerifySignatureav .
