We are impelementing Ringcentral Subscription functionality.

For that We are using code from github url:

https://github.com/ringcentral/ringcentral-csharp/tree/master/RingCentral/Subscription

We are facing issue in class SubscriptionService.cs:

Below is method where we actually facing issue:

private void OnSubscribe(string result)

{

var message = JsonConvert.DeserializeObject<string[]>(result)[0];

NotificationEvent?.Invoke(this, new SubscriptionEventArgs(Decrypt(message)));

}

We dont know what happen in Decrypt(message) function because Debug not going through that code i.e Decrypt(message). message parameter showing encrypted key

Below is Decrypt method:

private object Decrypt(string dataString)

{

var key = Convert.FromBase64String(subscriptionInfo.DeliveryMode.EncryptionKey);

var keyParameter = ParameterUtilities.CreateKeyParameter("AES", key);

var cipher = CipherUtilities.GetCipher("AES/ECB/PKCS7Padding");

cipher.Init(false, keyParameter);

var data = Convert.FromBase64String(dataString);

var memoryStream = new MemoryStream(data, false);

var cipherStream = new CipherStream(memoryStream, cipher, null);

var bufferSize = 1024;

var buffer = new byte[bufferSize];

var length = 0;

var resultStream = new MemoryStream();

while ((length = cipherStream.Read(buffer, 0, bufferSize)) > 0)

{

resultStream.Write(buffer, 0, length);

}

var resultBytes = resultStream.ToArray();

var result = Encoding.UTF8.GetString(resultBytes, 0, resultBytes.Length);

return JsonConvert.DeserializeObject(result);

}

Please guide us...!!

Thank you..!!