IC chip and information processing apparatus mounting IC chip

摘要

An IC chip includes: a first memory (10) which stores a control program for executing cryptographic processing; a second memory (20) which stores an application; an arithmetic processor (30) which receives first data including at least part of a cryptographic private key stored in a predetermined area of the application, and executes the cryptographic processing in accordance with the control program; and an auxiliary arithmetic processor (40) which executes predetermined arithmetic processing under control of the arithmetic processor (30). If the first data does not match a data format defined by a software interface of the auxiliary arithmetic processor (40), the arithmetic processor (30) controls to generate second data by processing the first data so as to match the data format, and to store the generated second data in a data table provided in the second memory.