网络与信息安全学报2024，Vol.10Issue(5)：145-151,7.DOI:10.11959/j.issn.2096-109x.2024073
改进的Joltik-BC-128算法的中间相遇攻击
Improved meet-in-the-middle attack on Joltik-BC-128
摘要
Abstract
The Joltik-BC,adopting the substitution-permutation network structure and Tweakey framework,was a lightweight tweakable block cipher published at ASIACRPYPT 2014.By researching the internal characteristic of the Joltik-BC,a 6-round meet-in-the-middle distinguisher against the Joltik-BC-128 was constructed by controlling the tweakey differentials and combining differential enumeration and differential characteristics of S-boxes.An im-proved meet-in-the-middle attack against the 9-round Joltik-BC-128 was developed using this distinguisher.The memory and time complexities of the improved 9-round Joltik-BC-128 were 244.91 64-bits blocks and 248 9-round Joltik-BC-128 encryptions.Compared with existing meet-in-the-middle attack results,the time complexity and memory complexity of this method were significantly reduced.关键词
分组密码/Joltik-BC/中间相遇攻击/差分枚举Key words
block cipher/Joltik-BC/meet-in-the-middle attack/differential enumeration分类
信息技术与安全科学引用本文复制引用
李征,任炯炯,李曼曼,陈少真..改进的Joltik-BC-128算法的中间相遇攻击[J].网络与信息安全学报,2024,10(5):145-151,7.基金项目
国家自然科学基金(62206312) The Natural Science Foundation of China(62206312) （62206312）
