Improved Guess and Determine attack on the MASHA stream cipher

被引：0

作者：

Lin Ding

Dawu Gu

Lei Wang

Chenhui Jin

Jie Guan

机构：

[1] Shanghai Jiao Tong University,Department of Computer Science and Engineering

[2] Zhengzhou Information Science and Technology Institute,undefined

[3] Westone Cryptologic Research Center,undefined

来源：

Science China Information Sciences | 2021年 / 64卷

关键词：

D O I：

暂无

中图分类号：

学科分类号：

摘要：

So far, no attack on MASHA has been published, besides the security analysis by its designers. In this study, based on optimizing the guess and determination process of the designers’ Guess and Determine attack, we propose an improved Guess and Determine attack on MASHA with time complexity of 2224, which improves their attack by a factor of 296. To the best of our knowledge, this is the best attack on MASHA so far.

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