摘要
为了抵抗能量攻击形式的边信道攻击,提出了一种新的椭圆曲线标量乘算法-分拆窗口算法。该方法以改进的NAFw算法为基础,不仅可以抵抗SPA(简单能量攻击)而且可以抵抗SPA/DPA(差分能量攻击)联合攻击和抵抗SPA/二阶DPA联合攻击,可以根据需要选择合适的窗口宽度,而且适用于存储受限的设备中。分析表明:这种算法比整体窗口算法效率较高。
It is proposed a new kind of Elliptic curve scalar multiplication algorithm resistant to side channel attacks based on power attacks-fractional window algorithm.Based on the improved NAFw algorithm,this paper presents an efficient and flexible scheme resisting power attacks-the fractional windows.The fractional windows are able to resist not only SPA but also SPA /DPA combined attacks and SPA/2nd-order DPA combined attacks.The fractional windows allow us to select the appropriate window width and offer great advantages in the frame of resource-constrained devices.Analysis results show that the fractional windows are more efficient than integral windows.
出处
《武汉理工大学学报》
CAS
CSCD
北大核心
2010年第7期156-159,186,共5页
Journal of Wuhan University of Technology
基金
国家自然科学基金(60473029
60673072)
国家基础研究973项目(2007CB311201)
江西师范大学博士启动基金(2613)
关键词
边信道攻击
标量乘
简单能量攻击
差分能量攻击
分拆窗口
side channel attacks
scalar multiplication
simple power analysis
differential power analysis
fractional window
