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요약정보
多AES分组杂凑模型原像攻击研究 / Researches on Preimage Attacks of Multiple AES Grouping Hash Mode
Resource Type
Academic Journal
Authors
李瑞同
;
刘亚
;
赵逢禹
;
LI Rui-tong
;
LIU Ya
;
ZHAO Feng-yu
Source
小型微型计算机系统 / Journal of Chinese Computer Systems
. 44(6):1274-1282
Subject
AES
杂凑函数
原像攻击
中间相遇攻击
Language
Chinese
ISSN
1000-1220
Online Access
Find it @ DONGA
초록
压缩函数采用高级加密标准AES(Advanced Encryption Standard)的杂凑模型是杂凑函数设计的重要方式之一,研究者已经提出了针对7轮单AES分组杂凑模型的原像攻击和6轮单AES分组杂凑模型的碰撞攻击,而针对多AES分组的杂凑模型安全性仍未知.本文提出了适应于后量子时代的两AES分组和四AES分组的杂凑函数模型的原像攻击,该攻击中采用了初始结构、连接剪切、部分匹配等技巧,恢复了 7轮双AES分组和6轮四AES分组的杂凑函数的原像,与已有7轮单AES分组杂凑模型的原像攻击相比,双AES分组杂凑模型可以达到几乎相当的安全强度,而四AES分组杂凑模型安全强度更强.此研究成果是对AES分组杂凑模型原像攻击的一个重要补充,为AES分组杂凑模型的设计提供了有力的理论保障.
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