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..!!
