Mobile memory with encipher function

The utility model provides a movable memory with an encrypting function, comprising a circuit substrate 7, a memory unit 1 which is arranged on the circuit substrate 7, a control unit 2 which is connected with the memory unit 1, and an external interface unit 3; wherein, the control unit 2 comprises a memory identification signal generator 4 which calculates and generates an identification signal for uniquely identifying the memory unit 1 when receiving a signal of the external interface unit 3 for reading and writing the memory unit 2, a coding signal generator 5 which interacts with the external interface unit 3 so as to obtain the external coding signal, and a reading/writing control unit 6 which decides whether the reading and writing of the memory unit 2 are allowed or not according to the identification signal generated by the identification signal generator 4 and the coding signal generated by the coding signal generator 5. As the reading and writing of the memory depend on the codes set by the user an