ARIA的差分性质研究  

Differential Property of Block Cipher ARIA

作　　者：郭建胜[1] 张磊 罗伟[1] 

机构地区：[1]信息工程大学 [2]65012部队

出　　处：《信息工程大学学报》2013年第2期141-147,152,共8页Journal of Information Engineering University

摘　　要：ARIA是韩国标准分组加密算法。有关ARIA的差分性质研究结果仅限设计者基于活动S盒数目而给出的一个理想评估上界。文章通过对算法轮函数内部结构分析,严格给出了ARIA算法存在的最大单链差分转移概率,进一步考虑在多条差分路径复合的情况下,找到了最大的两轮循环差分转移概率。结果表明,即使在考虑复合差分路径的情况下,ARIA对差分分析也是安全的。ARIA is the Korean block cipher encryption standard. By counting guaranteed numbers of active S-boxes, the designers theoretically evaluate the immunity of ARIA against differential attack. In this paper, a strict differential probability result is proposed based on the properties of the round transform of ARIA. Moreover, considering different differential trails may cluster （causing differentials hulls） , the best 2-round circular differential probability is given. It is shown that ARIA is secure to differential attack even under the differential trails clustering.

关 键 词：分组密码 ARIA 差分分析 差分特征 复合差分路径 

分 类 号：TN918.1[电子电信—通信与信息系统]