public static System.String CreateSalt( System.Int32 size )
        {
            // Instantiate a cryptographic random number generator.
            System.Security.Cryptography.RNGCryptoServiceProvider rng =
                new System.Security.Cryptography.RNGCryptoServiceProvider();

            // Create an array to hold the randomly generated bytes.
            System.Byte[] randomBytes = new System.Byte[ size ];

            // Fill the array with randomly generated bytes.
            rng.GetBytes( randomBytes );

            // Return a Base64 string representation of the random number.
            return System.Convert.ToBase64String( randomBytes );
        }