标题:Improved Rectangle Attack on SMS4 Reduced to 18 Rounds
作者:Kong, Xianglong; Wang, Wei; Xu, Qiuliang
通讯作者:Wang, W
作者机构:[Kong, Xianglong; Wang, Wei; Xu, Qiuliang] Shandong Univ, Sch Comp Sci & Technol, Jinan 250100, Peoples R China.
会议名称:9th International Conference on Computational Intelligence and Security (CIS)
会议日期:DEC 14-15, 2013
来源:2013 9TH INTERNATIONAL CONFERENCE ON COMPUTATIONAL INTELLIGENCE AND SECURITY (CIS)
出版年:2013
页码:575-578
DOI:10.1109/CIS.2013.127
关键词:SMS4; Rectangle attack; Cryptanalysis
摘要:SMS4 is a 32-round block cipher with 128-bit block size and 128-bit secret key. It is used in WAPI, the Chinese WLAN national standard. In this paper, we analyze the security of SMS4 against the rectangle attack. First we describe two properties of SMS4. Next, we propose the 16round rectangle distinguisher with probability 2 (250). Finally, the rectangle attack is then carried out on 18-round SMS4 with 2(127) chosen plaintexts and the time complexity is 2(103.83) 18-round encryptions. In this process we use a hash table to reduce the time complexity. Our attack is the best rectangle attack on SMS4 so far.
收录类别:CPCI-S
资源类型:会议论文
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