LBlock算法的基于比特积分攻击

Bit-Pattern Based Integral Attack on LBlock

对分组密码算法LBlock在基于比特积分攻击下的安全性进行了分析,利用基于比特的积分攻击思想,构造了8轮积分区分器,并向前扩展到12轮,基于该区分器对17轮算法进行了积分攻击,给出了攻击算法,攻击的计算复杂度约为263.7。

The security of the block cipher LBlock against the bit-pattern based integral attack is an- alyzed. In terms of the idea of bit-pattern based integral attack, a 8-round distinguisher of LBlock is built, and extended ahead to12 rounds. Based on the distinguisher, this paper applies the bit-pat- tern based integral attack to 17 rounds of LBlock and presents the attack arithmetic. The computing complexity is about 263.7.