I am trying to implement a licensing solution with DSA Algorithms for my application. Now here is what I have done:
Now my problem is that how to send the public key over the network. I tried to store and forward various DSAParameters values eg, J, G, P in a file but since the sizes of keys change, that is not viable. Please see if anyone can guide.
Updated: When I try to do this at the client's machine
DSAParameters KeyInfo;
using (DSACryptoServiceProvider DSA = new DSACryptoServiceProvider())
{
// Import the key information.
KeyInfo = DSA.ExportParameters(false);
}
The key size it generates for its various members is different from the public key parameters I have sent it back from server.
Okay. A bit late. But maybe other ones will have the same question.
You should just export your key like this:
string publicKey = DSA.ToXmlString(false);
so you can import it like this:
using (DSACryptoServiceProvider dsa = new DSACryptoServiceProvider())
{
dsa.FromXmlString(publicKey);
return dsa.VerifySignature()
}
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