Hello everyone,
I've got some ACOS5-Smartcards (from ACS) with RSA-functionality. I
want to sign data with one smartcard, send the data+signature to
another pc and verify the signature to check the integrity of the
data. But the verifyData()-function returns always "false", also on
the same card.
Here's the code:
CspParameters csp = new CspParameters(1, "Advanced Card Systems CSP
v2.3");
csp.Flags = CspProviderFlags.UseDefaultKeyContainer;
csp.KeyNumber = (int)KeyNumber.Signature;
RSACryptoServiceProvider rsa = new RSACryptoServiceProvider(csp);
Console.WriteLine("Container name: {0}\nKey type: {1}\nKey number:
{2}",
rsa.CspKeyContainerInfo.KeyContainerName,
rsa.CspKeyContainerInfo.KeyNumber,
csp.KeyNumber);
Console.WriteLine("Accessible? {0}\nExportable? {1}",
rsa.CspKeyContainerInfo.Accessible,
rsa.CspKeyContainerInfo.Exportable);
// Data to sign
byte[] data = new byte[] { 1, 2, 3, 4 };
Console.WriteLine("Data : " + BitConverter.ToString(data));
// Sign, Hash: SHA1
byte[] sig = rsa.SignData(data, "SHA1");
Console.WriteLine("Signature : " + BitConverter.ToString(sig));
// Verify the data with signature
bool verified = rsa.VerifyData(data, "SHA1", sig);
Console.WriteLine("Verified : " + verified);
Informations from the console:
Container name:
Key type: Signature
Key number: 2
Accessible? True
Exportable? False
Data : 01-02-03-04
Signature : 80-11-...
Verified : False
Can somebody help me?
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