该文从算法层面对分组密码固有的故障泄露特点进行了分析,提出一种可用于刻画其故障传播特性的传播轨迹框架,并以此为基础构建了适用于单次和多次故障注入场景的抗故障攻击能力度量方法。实验表明,该度量方法能够有效刻画不同故障注入场景下密钥空间的变化规律,进而揭示其算法层面的抗故障攻击能力。
A detailed analysis of the fault features for the block cipher is performed, and an analysis framework for propagation of faults is proposed. Furthermore, a security evaluation methodology with single fault injection or multi fault injection is presented. The experiment results show that the change of the key space for the block cipher using different fault attacks, can be charactered effectively and the ability of the fault-resistant can be presented well.