哈尔滨工程大学学报2012，Vol.33Issue(2)：259-262,4.DOI:10.3969/j.issn.1006-7043.201104005
流密码Sosemanuk的区分攻击
Distinguishing attack on the stream cipher Sosemanuk
摘要
Abstract
Sosemanuk has successfully been chosen as one of the final stream ciphers by Estream. Although Sose-manuk has attracted great interest, it has not been completely developed. Due to the linear defect in the Sosemanuk stream cipher, a distinguishing attack based on the linear character of the finite state machine ( FSM) and Serpent 1 was proposed. This method used linear masks by replacing modular additions and Trans functions by exclusive Ors (XORs) , transforming the nonlinear functions into linear functions. Then, a distinguisher was built. The results show that the keystream generated in Sosemanuk is distinguishable from a random sequence after observing approximately 2221 bits.关键词
密码分析/流密码/Sosemanuk/区分攻击/线性掩码Key words
cryptanalysis/ stream cipher/ Sosemanuk/ distinguishing attack/ linear masking分类
信息技术与安全科学引用本文复制引用
李顺波,胡予濮,王艳..流密码Sosemanuk的区分攻击[J].哈尔滨工程大学学报,2012,33(2):259-262,4.基金项目
国家自然科学基金资助项目(60833008,60970119) （60833008,60970119）
国家"973"计划(2007CB311201) （2007CB311201）
保密通信国防科技重点实验室基金资助项目(9140C110201110C1102) （9140C110201110C1102）
西安建筑科技大学青年基金资助项目(QN1024). （QN1024）
