Information processing equipment

摘要

A relation between the data process contents in an IC card chip and the consumption current of the IC card chip is reduced. Prior to executing an input data process of the IC card chip, the input data (405) is transformed (406) to thereby reduce the relation between the process data and the consumption current of the IC card chip. After the transforming process, the transformed data is untransformed (410) to obtain a correct process result (411). <IMAGE>