INFORMATION PROCESSING APPARATUS, INFORMATION PROCESSING METHOD, AND PROGRAM

摘要

In the authentication IC (21) for a master apparatus (2), a secret key is stored previously; in the authentication IC (31) for a slave apparatus (3), an IC-characteristic number and a secret key are stored previously and a HASH calculated value calculated with the secret key and the IC-characteristic number as arguments is stored. Whenever the master apparatus (2) detects a new slave apparatus (3) during operation, an arithmetic device (22) receives the IC-characteristic number from the authentication IC (31), the authentication IC (21) performs HASH calculation using the received IC-characteristic number and the stored secret key, and the arithmetic device (22) reads the HASH calculated value from the authentication IC (31) and compares the HASH calculated value calculated by the authentication IC (21) with the HASH calculated value read from the authentication IC (31), moving to the next-stage authentication operation when both of the values match.