Welcome to Journal of University of Chinese Academy of Sciences,Today is

›› 2012, Vol. 29 ›› Issue (1): 125-130.DOI: 10.7523/j.issn.2095-6134.2012.1.018

• Research Articles • Previous Articles     Next Articles

Guess-and-determine attacks on Loiss

ZHOU Zhao-Cun1,2, LIU Jun1,2, FENG Deng-Guo1   

  1. 1. State Key Laboratory Of Information Security, Institute of Software, Chinese Academy of Sciences, Beijing 100080, China;
    2. Graduate University, Chinese Academy of Sciences, Beijing 100049, China
  • Received:2010-11-02 Revised:2011-01-28 Online:2012-01-15

Abstract:

Loiss is a byte-oriented stream cipher. It generates keystream bytes under control of both initial key and IV. We analyze Loiss’ security in resistance to guess-and-determine attack. Without guessing the register cells of BOMM structure in Loiss, we give an attack method with time complexity O(2247) and data complexity O(252).

Key words: stream cipher, Loiss, BOMM, guess-and-determine attack

CLC Number: