针对功耗攻击的AES协处理器安全性分析

Security Analysis of AES Coprocessor for Statistical Power Attacks

在讨论高级加密标准(AES)的算法、硬件电路实现的基础上,阐述了实现设计中的安全问题。讨论了统计功耗攻击的原理和实现,并给出了定量的分析和实验结果。文章分析了不同的抗能量攻击的策略,提出了一种采用异构的S盒代替固定结构的S盒的方法,该方法可以有效地减小能量消耗和输入变化的相关性。

We discussed hardware circuit and arithmetic of Advanced Encryption Standard （AES）, and described security of design. Then we discussed principle and implement of statistical power attacks, presenting measurable analysis and experiment result. This paper analyzed different strategy of resisting power attacks, which put forward a sort of inhomogeneous S-boxes instead of fixed structural S-boxes, so that we can effectively decrease the correlation between power consumption and input signals variation.