Information processing equipment and IC card

Details Information processing equipment and IC card Information processing equipment and IC card

2005-01-04

2005-01-04

Smithers, Matthew (Department: 2137)

Electrical computers and digital processing systems: support

Data processing protection using cryptography

Tamper resistant

C713S152000, C713S340000, C713S193000, C713S601000, C380S268000, C705S065000, C705S057000

Reexamination Certificate

active

06839847

ABSTRACT:
An IC card having a storage memory including a program storage unit for storing a program and a data storage unit for storing data and a central processing unit for executing a predetermined process in accordance with the program to process the data, the program including one or more data process units each having a process instruction for giving an execution instruction to the central processing unit, wherein a data process order is randomly exchanged and a dummy process is added to thereby reduce the dependency of consumption current of an IC chip upon the data process.

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Kocher, Paul, et al, “Introduction to Differential Power Analysis and Related Attacks”, Cryptograph Research, 1998, pp. 1-5.
Kocher, Paul, et al, “Differential Power Analysis”, Proceedings of Advances in Cryptology—Crypt '99, Springer-Verlay, 1999, pp. 388-397. Reprinted on Internet www.cryptography.com/resources/whitepaters/DPA.pd. as pp. 1-10.
“Smart Card Handbook”, p. 263.

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