Dynamic Command Protection Method and Dynamic Command Protection System by Using Time-Vary Salt Data

A dynamic command protection system comprising:

• a physically linked device;
• and
• a computer terminal linked to the physically linked device;
• wherein the physically linked device generates salt data after an authentication of the physically linked device is verified, the physically linked device transmits the salt data to the computer terminal, the computer terminal transmits at least one command protected by the salt data to the physically linked device during a first time interval, the physically linked device verifies the salt data if the at least one command is valid, the physically linked device executes at least one valid command after the salt data is successfully verified, the physically linked device updates the salt data after the first time interval elapses, and the salt data is bound to the physically linked device and is generated according to a time-varying value.