App_Code.UserVoiceTokenGenerator.Create C# (CSharp) Method

        public static string Create(string userDetails)
        {
            string accountKey = "ucdavis";
            string apiKey = "b7bce8a7c70fb5eca0c1dc0fb4e01cc9";
            string initVector = "OpenSSL for Ruby"; // DO NOT CHANGE

            byte[] initVectorBytes = Encoding.UTF8.GetBytes(initVector);
            byte[] keyBytesLong;
            using (var sha = new SHA1CryptoServiceProvider())
            {
                keyBytesLong = sha.ComputeHash(Encoding.UTF8.GetBytes(apiKey + accountKey));
            }
            var keyBytes = new byte[16];
            Array.Copy(keyBytesLong, keyBytes, 16);

            byte[] textBytes = Encoding.UTF8.GetBytes(userDetails);
            for (int i = 0; i < 16; i++)
            {
                textBytes[i] ^= initVectorBytes[i];
            }

            // Encrypt the string to an array of bytes
            byte[] encrypted = encryptStringToBytes_AES(textBytes, keyBytes, initVectorBytes);
            string encoded = Convert.ToBase64String(encrypted);
            return HttpUtility.UrlEncode(encoded);
        }