An Optimized Countermeasure Secure against Power Analysis for Comb Elliptic Curve Point Multiplication Method
Yun Chen · Journal of Chengdu University of Information Technology · 2010
Power analysis attacks severely threaten the security of cryptographic chips since the technology has been developed by Paul Kocher.Odd-only comb window method is a fast elliptic curve scalar multiplication algorithm,but it is weak to differential power analysis attack,refined power analysis attack and zero-valued power analysis attack.In this paper,an improved odd-only comb window method is presented in order to resistant power analysis attacks.The improved method is valid for simple power analysis attack,differential power analysis attack,refined power analysis attack and zero-valued power analysis attack.Our method is superior to the original odd-only comb method in security without compromise of the memory size,and with only a little more time running.Besides,it is more efficient than WBRIP method.