ENCRYPTION PROCESSING DEVICE, SEMICONDUCTOR MEMORY, AND MEMORY SYSTEM

摘要

PROBLEM TO BE SOLVED: To provide a technique with which the content of encryption processing in an encryption processing device becomes hard to identify.SOLUTION: An encryption processing device 1 includes an encryption processing unit group 20 and a use state control unit 5. The encryption processing unit group 20 is constituted of a plurality of encryption processing units 2 each having an encryption function. The use state control unit 5 controls the use state of the plurality of encryption processing units 2 in the encryption processing device 1. The use state control unit 5 changes the use state of the plurality of encryption processing units 2.