RSAPKCS1SignatureDeformatter-Konstruktor (AsymmetricAlgorithm)
Initialisiert eine neue Instanz der RSAPKCS1SignatureDeformatter-Klasse mit dem angegebenen Schlüssel.
Namespace: System.Security.Cryptography
Assembly: mscorlib (in mscorlib.dll)
Syntax
'Declaration
Public Sub New ( _
key As AsymmetricAlgorithm _
)
'Usage
Dim key As AsymmetricAlgorithm
Dim instance As New RSAPKCS1SignatureDeformatter(key)
public RSAPKCS1SignatureDeformatter (
AsymmetricAlgorithm key
)
public:
RSAPKCS1SignatureDeformatter (
AsymmetricAlgorithm^ key
)
public RSAPKCS1SignatureDeformatter (
AsymmetricAlgorithm key
)
public function RSAPKCS1SignatureDeformatter (
key : AsymmetricAlgorithm
)
Parameter
- key
Die Instanz von RSA, die den öffentlichen Schlüssel enthält.
Hinweise
Verwenden Sie SetHashAlgorithm, um den Hashalgorithmus festzulegen, bevor Sie VerifySignature aufrufen.
Beispiel
Im folgenden Codebeispiel wird mithilfe der RSAPKCS1SignatureFormatter-Klasse eine digitale Signatur erstellt, die anschließend mithilfe der RSAPKCS1SignatureDeformatter-Klasse überprüft wird.
Imports System
Imports System.Security.Cryptography
_
Class RSASample
Shared Sub Main()
Try
'Create a new instance of RSACryptoServiceProvider.
Dim RSA As New RSACryptoServiceProvider()
'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 RSAOPKCS1SignatureFormatter object and pass it the
'RSACryptoServiceProvider to transfer the key information.
Dim RSAFormatter As New RSAPKCS1SignatureFormatter(RSA)
'Set the hash algorithm to SHA1.
RSAFormatter.SetHashAlgorithm("SHA1")
'Create a signature for HashValue and return it.
Dim SignedHash As Byte() = RSAFormatter.CreateSignature(Hash)
'Create an RSAPKCS1SignatureDeformatter object and pass it the
'RSACryptoServiceProvider to transfer the key information.
Dim RSADeformatter As New RSAPKCS1SignatureDeformatter(RSA)
RSADeformatter.SetHashAlgorithm("SHA1")
'Verify the hash and display the results to the console.
If RSADeformatter.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
using System;
using System.Security.Cryptography;
class RSASample
{
static void Main()
{
try
{
//Create a new instance of RSACryptoServiceProvider.
RSACryptoServiceProvider RSA = new RSACryptoServiceProvider();
//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 RSAOPKCS1SignatureFormatter object and pass it the
//RSACryptoServiceProvider to transfer the key information.
RSAPKCS1SignatureFormatter RSAFormatter = new RSAPKCS1SignatureFormatter(RSA);
//Set the hash algorithm to SHA1.
RSAFormatter.SetHashAlgorithm("SHA1");
//Create a signature for HashValue and return it.
byte[] SignedHash = RSAFormatter.CreateSignature(Hash);
//Create an RSAPKCS1SignatureDeformatter object and pass it the
//RSACryptoServiceProvider to transfer the key information.
RSAPKCS1SignatureDeformatter RSADeformatter = new RSAPKCS1SignatureDeformatter(RSA);
RSADeformatter.SetHashAlgorithm("SHA1");
//Verify the hash and display the results to the console.
if(RSADeformatter.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.dll>
using namespace System;
using namespace System::Security::Cryptography;
int main()
{
try
{
//Create a new instance of RSACryptoServiceProvider.
RSACryptoServiceProvider^ RSA = gcnew RSACryptoServiceProvider;
//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 RSAOPKCS1SignatureFormatter object and pass it the
//RSACryptoServiceProvider to transfer the key information.
RSAPKCS1SignatureFormatter^ RSAFormatter = gcnew RSAPKCS1SignatureFormatter( RSA );
//Set the hash algorithm to SHA1.
RSAFormatter->SetHashAlgorithm( "SHA1" );
//Create a signature for HashValue and return it.
array<Byte>^SignedHash = RSAFormatter->CreateSignature( Hash );
//Create an RSAPKCS1SignatureDeformatter object and pass it the
//RSACryptoServiceProvider to transfer the key information.
RSAPKCS1SignatureDeformatter^ RSADeformatter = gcnew RSAPKCS1SignatureDeformatter( RSA );
RSADeformatter->SetHashAlgorithm( "SHA1" );
//Verify the hash and display the results to the console.
if ( RSADeformatter->VerifySignature( Hash, SignedHash ) )
{
Console::WriteLine( "The signature was verified." );
}
else
{
Console::WriteLine( "The signature was not verified." );
}
}
catch ( CryptographicException^ e )
{
Console::WriteLine( e->Message );
}
}
import System.*;
import System.Security.Cryptography.*;
class RSASample
{
public static void main(String[] args)
{
try {
// Create a new instance of RSACryptoServiceProvider.
RSACryptoServiceProvider rsa = new RSACryptoServiceProvider();
//The hash to sign.
ubyte hash[] = {59, 4, 248, 102, 77, 97, 142, 201, 210, 12, 224,
93, 25, 41, 100, 197, 213, 134, 130, 135};
// Create an RSAOPKCS1SignatureFormatter object and pass it the
// RSACryptoServiceProvider to transfer the key information.
RSAPKCS1SignatureFormatter rsaFormatter =
new RSAPKCS1SignatureFormatter(rsa);
// Set the hash algorithm to SHA1.
rsaFormatter.SetHashAlgorithm("SHA1");
// Create a signature for HashValue and return it.
ubyte signedHash[] = rsaFormatter.CreateSignature(hash);
// Create an RSAPKCS1SignatureDeformatter object and pass it the
// RSACryptoServiceProvider to transfer the key information.
RSAPKCS1SignatureDeformatter rsaDeformatter =
new RSAPKCS1SignatureDeformatter(rsa);
rsaDeformatter.SetHashAlgorithm("SHA1");
// Verify the hash and display the results to the console.
if (rsaDeformatter.VerifySignature(hash, signedHash)) {
Console.WriteLine("The signature was verified.");
}
else {
Console.WriteLine("The signature was not verified.");
}
}
catch (CryptographicException e) {
Console.WriteLine(e.get_Message());
}
} //main
} //RSASample
Plattformen
Windows 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile für Pocket PC, Windows Mobile für Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition
.NET Framework unterstützt nicht alle Versionen sämtlicher Plattformen. Eine Liste der unterstützten Versionen finden Sie unter Systemanforderungen.
Versionsinformationen
.NET Framework
Unterstützt in: 2.0, 1.1, 1.0
.NET Compact Framework
Unterstützt in: 2.0
Siehe auch
Referenz
RSAPKCS1SignatureDeformatter-Klasse
RSAPKCS1SignatureDeformatter-Member
System.Security.Cryptography-Namespace