摘要 |
A master generates a session key, receives public keys from a plurality of slaves, encrypts the session key using the individual public keys, transmits the encrypted session key to the plurality of slaves, encrypts data using the encrypted session key, and sends it to the plurality of slaves. A plurality of slaves transmit public keys to a master device, receive and decrypt a session key encrypted using individual public keys, receive data encrypted using the session key from the master, and decrypt it using the decrypted session key. |