[1]时阳阳,黄玉划,陈帮春. 一种基于Feistel结构和WTS的分组密码[J].计算机技术与发展,2014,24(08):126-130.
　SHI Yang-yang,HUANG Yu-hua,CHEN Bang-chun. A Block Cipher Based on Feistel Structure and WTS[J].,2014,24(08):126-130.
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 一种基于Feistel结构和WTS的分组密码()
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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08期
页码:
126-130
栏目:
安全与防范
出版日期:
2014-08-10

文章信息/Info

Title:
 A Block Cipher Based on Feistel Structure and WTS
文章编号:
1673-629X（2014）08-0126-05
作者:
 时阳阳; 黄玉划; 陈帮春
 南京航空航天大学 计算机科学与技术学院
Author(s):
 SHI Yang-yang; HUANG Yu-hua; CHEN Bang-chun
关键词:
 ; AES; Feistel结构; WTS策略; 依赖性测试; 不可能差分分析
Keywords:
 ; AES Feistel structure; WTS strategies; dependence test; impossible differential analysis
分类号:
TN918.1
文献标志码:
A
摘要:
 AES为新的数据加密标准,通过研究分组密码算法加密的整体结构和AES加密算法,文中设计了一种基于Feistel结构和WTS策略的分组密码算法FWTS。 FWTS采用Feistel结构,轮函数借鉴AES的WTS策略,分组长度为256 bits,密钥长度为128 bits,192 bits,256 bits。通过依赖性测试表明,FWTS算法4轮充分满足雪崩效应、严格雪崩准则和完备性。通过不可能差分分析,FWTS算法的6轮不可能差分所需的时间复杂度要大于AES算法的6轮不可能差分的时间复杂度。FWTS算法的安全性不低于AES算法。通过效率测试表明FWTS的加密效率要高于AES。
Abstract:
 AES is the advanced data encryption standard. A block cipher based on Feistel structure and WTS strategies named FWTS is designed by studying the overall structure of the block cipher and AES algorithm. FWTS algorithm adopts Feistel structure and its round function refers to WTS strategies of AES encryption. The block size of FWTS is 256 bits,the key size is 128 bits,192 bits,256 bits. De-pendence test shows that FWTS algorithm fully satisfies the avalanche effect with 4-round. Impossible differential analysis with 6-round presents that FWTS algorithm has a higher time complexity than AES. The security of FWTS algorithm is not lower than AES. The effi-ciency test shows that FWTS algorithm has a higher efficiency compared with AES.

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更新日期/Last Update: 2015-03-26