I am using .NET Framework 2.0. I used X509Certificate class to obtain the
public key from a certificate file.

       // The path to the certificate.
       string Certificate = "C:\\Certificate.cer";

       // Load the certificate into an X509Certificate object.
       X509Certificate cert = new X509Certificate(Certificate);

       byte[] key = cert.GetPublicKey();

My question is how do i use the key to instantiate data to instantiate
RSACryptoServiceProvider. I need this in order to verify a signature
received from a client machine.

Thanks.