SP-GFS结构的积分性质研究

发布时间：2018-03-31 06:32

本文选题：扩散层　切入点：分支数　出处：《电子与信息学报》2014年08期

【摘要】：该文提出了扩散级数的定义,刻画了线性置换的扩散性质。此外针对SP(Substitute Permutation)轮函数的整体结构GFS(Generalized Feistel Structure)进行了积分性质分析,通过分析线性置换P的扩散级数对积分区分器长度的影响,证明得出SP-GFS结构的积分区分器轮数下界。最后用这种方法改进了分组算法Camellia和CLEFIA的积分区分器,从而验证了结论的正确性。
[Abstract]:In this paper, the definition of diffusion series is proposed, and the diffusion properties of linear permutation are described. In addition, the integral properties of the global structure GFS(Generalized Feistel structure of SP(Substitute permutation function are analyzed. By analyzing the influence of diffusion series of linear permutation P on the length of integral discriminator, it is proved that the lower bound of integral discriminator wheel number of SP-GFS structure is obtained. Finally, the integral discriminator of Camellia and CLEFIA is improved by this method. The conclusion is proved to be correct.
【作者单位】：北京电子科技学院信息安全系;中国科学院软件研究所;
【基金】：国家自然科学基金(60873259,60903212) 中央高校基本科研业务费专项基金(YQNJ1003)资助课题
【分类号】：TN918.1

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