private IEnumerator SaveScoreAsync(string accessToken, int score, float positionX, string version) { WWWForm form = new WWWForm(); using (Aes myAes = Aes.Create()) { myAes.KeySize = 128; var encryptedToken = CryptoUtils.AESEncrypt(accessToken, myAes.Key, myAes.IV); string encryptedTokenString = Convert.ToBase64String(encryptedToken); string keyString = Convert.ToBase64String(myAes.Key); string IVString = Convert.ToBase64String(myAes.IV); form.AddField(Const.ACCESS_TOKEN, encryptedTokenString); form.AddField(Const.AES_KEY, keyString); form.AddField(Const.AES_IV, IVString); form.AddField(Const.SCORE_FIELD, score); form.AddField(Const.VERSION_FIELD, version); int positionX_int = Mathf.RoundToInt(positionX * 10); form.AddField(Const.POSITIONX_FIELD, positionX_int); } UnityWebRequest request = UnityWebRequest.Post(Const.POST_URL, form); yield return(request.SendWebRequest()); Debug.Log(request.downloadHandler.text); }