How does the communication encryption work?
Communication is encrypted through AES (Advanced Encryption Standard), and the encryption method is as follows.
1. The server generates a random session key.
2. The server encrypts the randomly generated session key using a fixed key and sends it to the device.
3. The device decrypts the encrypted session key using a fixed key.
4. After the device decrypts the session key, the communication is then encrypted using the session key.

If you have any questions about AES, please feel free to contact Chiyu for more details.
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