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Central control: At initialization, embed the same Identification Key (Id-K) across all devices through the Certificate Authority (CA)
- Device A encrypts the Id-K using the public key and sends it to the central control station.
- Central control decrypts with a private key.
- If the decrypted data is the same as the Id-K issued by the CA, Device A is authenticated.
- The central control station requests data from Device A to be sent to Device B.
- The central control station updates the public and private keys and broadcasts the public keys to all devices.
- The central control station requires Device B to encrypt the Id-K with the public key and send it to the central control station.
- Central control decrypts with a private key.
- If the decrypted data is the same as the Id-K issued by the CA, Device B is authenticated. The central control station sends the data sent by Device A to Device B. |
IEEE/ICACT20230058 Slide.12
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