DPA攻击中功耗采集技巧研究

Power acquisition research on DPA attack

针对目前缺少从曲线采集的角度分析采集参数对DPA攻击的影响的研究,比较了在不同采样频率、不同示波器垂直分辨率、有无低通滤波情况下,对DPA攻击结果的影响。最后得出结论,当攻击对象为时序逻辑时,采用低通滤波器、500 MHz或者1 GHz采样频率采集曲线最佳;当攻击对象为组合逻辑时,不采用低通滤波器、2.5 GHz或者5 GHz采样频率采集曲线最佳。按照上述参数设置,更有利于开展DPA攻击。利用所得结论,可在攻击方法相同的情况下,尽可能地提高攻击效果,对DPA攻击的研究具有促进作用。

Aiming at that there are no methods concerning the acquisition parameter effect on DPA attack, this paper compares the effect on DPA attack in case of different sample frequency, resolution and low pass. The conclusions have been drew that it is better to use low pass and choose the sample frequency of 500 MHz or 1 GHz when attack sequential logic, then do not use low pass and choose 2.5 GHz or 5 GHz when attack combinational logic. Under this configuration, one can get a better result with DPA attack. Utilizing the conclusions above, we can enhance the efficiency of DPA attack even when the methods are same, and pro- mote the research on DPA attack.