抗差分故障攻击的AES密码芯片设计

针对AES的差分故障攻击(DFA)过程,总结出对AES的DFA攻击算法与攻击模型的特点,在此基础上为AES密码芯片设计了一种基于TRC校验的防护电路,并对其抗差分故障攻击的可行性进行了仿真验证。结果表明,该防护电路能够快速准确地检测出导入错误,增强了AES芯片抗DFA攻击的能力。

Design of an AES crypto-chip resistant to DFA

Differential fault attack against AES is analyzed,and then an attack algorithm together with characteristic of attack models is summarized.On the ground of the previous works,a TRC based protection circuit is designed for AES crypto-chip,and its validity is proved through simulation.The result shows that the protection circuit can detect the abnormal faults quickly and accurately,thus greatly enhancing the capability of AES crypto-chip to resist DFA.