Data processing method, its program,and its device

摘要

A management device 20 outputs key designation data read from a card to a SAM unit 9 a. The SAM unit 9 a uses mutual authentication key data designated by key designation data to generate synthetic key data. The management device 20 and the SAM unit 9 a use the synthetic key data for authentication. When the SAM unit 9 a confirms the legitimacy of the management device 20 , it executes processing related to one or more mutual authentication key data used for generating the synthetic key data.