MASTER DEVICE AND DATA PROCESSING SYSTEM

摘要

A result of authentication of a slave device (3) by a master device (2) is reported to a master data processing device (6) as a combination of some of judgment result data supplied from a master authentication device (5) to the master data processing device (6) and remaining judgment result data supplied to the master data processing device (6) via the slave device (3) from the master authentication device (5). Even when the some of judgment result data and the remaining judgment result data are plain texts, they are given via different routs (11, 10). Accordingly, concealment of the judgment result can be intensified as compared to a case when all the judgment results are given from the master authentication device (5) to the master data processing device (6). This eliminates the need of intensifying the concealment of the judgment result of the authentication process by causing the master data processing device to execute encryption and decryption programs.