抄録
Offer Organization: Japan Society for the Promotion of Science, System Name: Grants-in-Aid for Scientific Research, Category: Grant-in-Aid for Scientific Research (A), Fund Type: -, Overall Grant Amount: - (direct: 30100000, indirect: 9030000)
In this research, we have established fundamental countermeasure techniques against laser fault injection attacks, where an attacker intentionally induces soft errors in a cryptographic circuit to retrieve secret information. Specifically, we have conducted four research items; (1) construction of evaluation environment of laser fault injection attacks, (2) measurement of substrate potential fluctuation at laser irradiation and development of attack detection method, (3) development of countermeasure techniques for cryptographic-algorithm level based on detection, and (4) safety evaluation of countermeasure technology. We have deepened our understandings of the information leakage mechanism in the laser fault injection attack from physical and mathematical viewpoints and clarified the feasibility of countermeasure techniques using a prototype IC chip.