1. 山东大学网络空间安全学院(研究院),山东 青岛 266237
2. 山东大学密码技术和信息安全教育部重点实验室,山东 青岛 266237
3. 中国电力科学研究院有限公司,北京 100192
[ "葛欣欣(1997- ),女,吉林四平人,山东大学硕士生,主要研究方向为分组密码分析" ]
[ "李智虎(1975- ),男,安徽望江人,中国电力科学研究院有限公司高级工程师,主要研究方向为密码理论和密码工程" ]
[ "王美琴(1974- ),女,宁夏银川人,山东大学教授、博士生导师,主要研究方向为对称密码算法的设计和分析" ]
[ "胡凯(1992- ),男,山东临沂人,山东大学博士生,主要研究方向为对称密码的分析" ]
网络首发:2021-06,
纸质出版:2021-06-15
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葛欣欣, 李智虎, 王美琴, 等. LowMC实例的差分枚举攻击效果分析[J]. 网络与信息安全学报, 2021,7(3):149-155.
Xinxin GE, Zhihu LI, Meiqin WANG, et al. Effect of the difference enumeration attack on LowMC instances[J]. Chinese Journal of Network and Information Security, 2021, 7(3): 149-155.
葛欣欣, 李智虎, 王美琴, 等. LowMC实例的差分枚举攻击效果分析[J]. 网络与信息安全学报, 2021,7(3):149-155. DOI: 10.11959/j.issn.2096-109x.2021046.
Xinxin GE, Zhihu LI, Meiqin WANG, et al. Effect of the difference enumeration attack on LowMC instances[J]. Chinese Journal of Network and Information Security, 2021, 7(3): 149-155. DOI: 10.11959/j.issn.2096-109x.2021046.
LowMC是具有低乘法复杂度特征的算法。针对低数据量和少量S盒参数下的LowMC实例,差分枚举攻击被提出,理论上可以攻击全轮LowMC算法。考虑到这种攻击是在线性层完全随机的条件下给出的,对LowMC算法在真实的线性层下抵抗差分枚举攻击的强度进行了研究。通过对关键起始轮数的研究发现,差分枚举攻击并非总是可以达到理论攻击轮数。对于某一些关键起始轮数比理论值小的LowMC实例,差分枚举攻击甚至会失败。由于LowMC算法的轮数设置基于现有攻击的效果,该分析对LowMC算法的轮数设计具有重要意义。
The LowMC is an algorithm with low multiplicative complexities.For the parameter with limited data complexities and low number of S-boxes
the difference enumeration attack was proposed
which could theoretically attack all rounds of the LowMC.Considering that the original attack is based on the random linear layer
the strength of LowMC algorithm against differential enumeration attacks under a specific linear layer deserves more study.The difference enumeration attack cannot reach theoretical rounds through the research on the so-called key initial round.In terms of some LowMC instances
the key initial round is smaller than the theoretical value
which leads to the failure of the difference enumeration attack.Since the number of rounds of the LowMC is completely based on existing attacks
the analysis is of great significance to the rounds design of the LowMC.
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