摘要
介绍了边信道攻击的概念和研究背景,以及幂剩余算法和公钥密码体制抗边信道攻击的主要思路;指出目前公钥密码边信道攻击防范方法的主要问题是以牺牲算法效率为代价。针对目前存在的问题,以消除运算单元之间的功耗差异为目的,提出幂剩余运算的等功耗编码实现算法;通过对新方法的论证,证明等功耗编码实现算法已达到了抗计时和能量攻击的预期目标;通过进一步分析,得到提高算法抗攻击能力不必以牺牲算法效率为代价的结论。
A main problem in current of side channel attack on PKC is the cost of compromising computational efficiency. Against the problem, a cryptographic implementation for modular exponentiation over f＇mite field by coding with equivalent power consumption is presented for the goal of thwarting side channel attacks by erasing the difference of power consumption among the operational components. It is demonstrated that the expected goal of preventing timing measurement and power attack is reached to. Finally, it comes to the conclusion that one needs not compromise the computational efficiency on modular exponentiation in order to thwart side channel attack.
出处
《电子科技大学学报》
EI
CAS
CSCD
北大核心
2008年第2期168-171,共4页
Journal of University of Electronic Science and Technology of China
基金
电子信息产业发展基金(财建[2006]824号文、信部运[2006]717号文)
现代通信国家重点实验室基金(9140C1101050705)
四川省教育厅科研基金(2006c033)
关键词
防范措施
密码学
等功耗编码
公钥密码
边信道攻击
countermeasures
cryptography
equivalent consumption coding
public key cryptosystem
side channel attack
