HARDWARE ENCRYPTION MODULE, CHIP, AND ENCRYPTION METHOD

The present invention provides a hardware encryption module, a chip, and an encryption method. The hardware encryption module comprises a control unit and a storage unit; the control unit is connected to the storage unit and receives an external instruction, determines an encryption state on the basis of an encryption value in an encryption bit address of the storage unit, generates, on the basis of an external erasing instruction, control timing for controlling the erasing of the storage unit, and generates, on the basis of the encryption state and an external read-write instruction, control timing for controlling the reading and writing of the storage unit. In an encryption mode, encryption reading is only performed on a program area and a write operation is prohibited from being performed on the encryption bit address. According to the present invention, all encryption behaviors are only valid for the program area and are invalid for a data area; users are prevented from directly erasing the encryption bit