CAJ | 학술논문

SMS4算法是国内官方于2006年2月公布的第一个商用分组密码标准。积分攻击是一种利用平衡性的选择明文攻击。首先简明介绍了分组密码算法SMS4的结构。通过选择不同形式的特定明文来观察平衡字集的传播路径，研究了SMS4算法的四轮、五轮、六轮、七轮和八轮积分区分器，在此基础上就可以进行积分攻击。由此可知，低轮数的SMS4算法对Square攻击是不免疫的。
SMS4산법시국내관방우2006년2월공포적제일개상용분조밀마표준。적분공격시일충이용평형성적선택명문공격。수선간명개소료분조밀마산법SMS4적결구。통과선택불동형식적특정명문래관찰평형자집적전파로경，연구료SMS4산법적사륜、오륜、륙륜、칠륜화팔륜적분구분기，재차기출상취가이진행적분공격。유차가지，저륜수적SMS4산법대Square공격시불면역적。
The SMS4 algorithm is the first commercial block cipher standard , which was announced in February, 2006.Integral attack is a kind of chosen -plaintext attacks that using balance .First of all, we concisely introduce the structure of block cipher SMS 4.By selecting the different forms of specific plaintexts , we observe the propagation paths of the balanced character sets , study the SMS4 ’ s 4 -round, 5-round, 6-round, 7-round and 8-round integral distinguisher , so based on these results we can launch the integral attacks .It can be seen that SMS 4 with low numbers of rounds was not im-mune to square attack .