Chosen IV Algebraic Attack On One.Fivium

摘要：

One of the key questions in algebraic attacks is howto effectively reduce the degree of the function.Basedon the algebraic attack,this paper presents a newalgorithm of aUack——chosen IV algebraic attack,which can reduce the functions degree by choosingappropriate IV.Using this algorithm,we analyze theOne.Fivium,the predigesting form of Trivium.we canget 70 key bits,and the length of the longest key streamneeded can be reduced to halve the length of theprevious one.In order to fit the original intention,when the setup clock cycles in the key generatingstream are increased to 630,.we can still get 55 keybits by increasing the changeable bits of IV.

作者: SUN Zhe ZHANG Shi-Wu WANG Lei

作者单位: Basic Cources Department,University of Foreign Language,Luoyang,471003,China

会议类型: 国际会议

会议名称: 2008 3rd International Conference on Intelligent System and Knowledge Engineering(第三届智能系统与知识工程国际会议)(ISKE 2008)

会议地点: 厦门

会议语种:英文

页码: 1427-1431

在线出版日期: 2008-11-17（万方平台首次上网日期，不代表论文的发表时间）