【摘要】 通过分析延迟序列和初始状态之间的关系,给出了能够完全抵抗能量攻击所需触发器数目的下界;提出了一种抵抗能量攻击的流密码线性反馈移位寄存器(LFSR)的设计方案.在抵抗LFSR能量攻击时,附加触发器的个数最多为5个,大大减少了LFSR的附加功耗.更多还原

【Abstract】 An additional large number of flip-flops are required for available linear feedback shift register(LFSR) design which can completely resist power attack on the stream cipher based on LFSR.By analyzing the relations between the delayed sequence and the initial states,the lower bound on the number of flip-flops in the design of LFSR based stream ciphers to resist the power attack is given and a novel lightweight design to resist power attack is proposed.With this method,the number of flip-flops required is decreased to five and the power consumption is significantly reduced.更多还原