| 摘要 |
PROBLEM TO BE SOLVED: To provide an electronic information recording medium capable of improving security against a side channel attack and a fault utilizing attack by using a plurality of processor modules, and to provide a processing method of a processor module and a processing program of a processor module.SOLUTION: When a predetermined condition is satisfied in an IC chip C, a processor module 1 executes sub processing instead of main processing, and a processor module 2 executes the main processing instead of the sub processing.SELECTED DRAWING: Figure 4 |
