[1]陈帮春,黄玉划,时阳阳. CLEFIA算法的研究与改进[J].计算机技术与发展,2014,24(12):124-127.
　CHEN Bang-chun,HUANG Yu-hua,SHI Yang-yang. Research and Improvement of CLEFIA[J].,2014,24(12):124-127.
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 CLEFIA算法的研究与改进()
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《计算机技术与发展》[ISSN:1006-6977/CN:61-1281/TN]

卷:
24
期数:
2014年12期
页码:
124-127
栏目:
安全与防范
出版日期:
2014-12-10

文章信息/Info

Title:
 Research and Improvement of CLEFIA
文章编号:
1673-629X（2014)12-0124-04
作者:
 陈帮春; 黄玉划; 时阳阳
 南京航空航天大学 计算机科学与技术学院
Author(s):
 CHEN Bang-chun; HUANG Yu-hua; SHI Yang-yang
关键词:
 ; CLEFIA算法; 改进; 效率; 安全
Keywords:
 ; CLEFIA; improvement; efficiency; security
分类号:
TP309；TN918
文献标志码:
A
摘要:
 CLEFIA算法是两种国际标准化的轻量级分组密码之一，它在资源受限环境下具有重要的应用价值。文中针对CLEFIA-128算法需要5轮才能基本实现雪崩效应、扩散效果并不明显的问题，以及每一轮中两个轮函数的设计方式导致的软、硬件实现效率降低的问题，从加密结构和轮函数上对该算法进行了改进。测试表明改进后的算法只要4轮就能基本实现雪崩效应，差分、线性和不可能差分分析表明改进后算法的安全性有了提高，而且算法的软、硬件实现效率也有了明显提高。
Abstract:
 The CLEFIA is one of the two international standardized lightweight block cipher,which has important application value under the condition of resource constrain.In view of the problems that CLEFIA-128 need 5 round to realize the avalanche effect,and the diffu-sion effect is not obvious,and the design of round function in each round makes the efficiency of software and hardware lower,the CLE-FIA-128 is improved from the structure and round function.The test demonstrates the improved algorithm only need 4 rounds to realize the avalanche effect,its DC,LC and IDC indicates that the security is improved,while the software and hardware performance also increa-ses a lot.

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更新日期/Last Update: 2015-04-15