New design of LFSR based stream ciphers to resist power attack
Yan-yan JIA · Journal of Xidian University · 2013
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.