标题:Improved impossible differential attack on reduced-round Lblock
作者:Wang, Ning ;Wang, Xiaoyun ;Jia, Keting
通讯作者:Wang, Xiaoyun
作者机构:[Wang, Ning ;Wang, Xiaoyun ] Key Laboratory of Cryptologic Technology and Information Security, Ministry of Education, Shandong University, Jinan; 250 更多
会议名称:18th International Conference on Information Security and Cryptology, ICISC 2015
会议日期:25 November 2015 through 27 November 2015
来源:Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
出版年:2016
卷:9558
页码:136-152
DOI:10.1007/978-3-319-30840-1_9
关键词:Impossible differential cryptanalysis; LBlock; Lightweight block cipher
摘要:LBlock is a 32-round lightweight block cipher with a 64-bit block size and an 80-bit key. This paper presents a new impossible differential attack on LBlock by improving the previous best result for 1 more round. Based on the nibble conditions, detailed differential properties of LBlock S-Boxes and thorough exploration of subkey relations, we set up well precomputation tables to collect the data needed and propose an optimal key-guessing arrangement to effectively reduce the time complexity of the attack. With these techniques, we launch an impossible differential attack on 24-round LBlock. To the best of our knowledge, this attack is currently the best in terms of the number of rounds attacked (except for biclique attacks). © Springer International Publishing Switzerland 2016.
收录类别:EI;SCOPUS
Scopus被引频次:1
资源类型:会议论文;期刊论文
原文链接:https://www.scopus.com/inward/record.uri?eid=2-s2.0-84961173117&doi=10.1007%2f978-3-319-30840-1_9&partnerID=40&md5=748cf5923dbc55fcb6ede75482ef939b
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