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中国科学院大学学报 ›› 2002, Vol. 19 ›› Issue (4): 415-421.DOI: 10.7523/j.issn.2095-6134.2002.4.013

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SAFER系列密码算法的设计与分析

张文涛1, 吴文玲1, 卿斯汉1   

  1. 中国科学院软件研究所, 中国科学院信息安全技术工程研究中心, 北京 100080
  • 收稿日期:2001-11-12 修回日期:2002-01-14 发布日期:2002-07-18
  • 作者简介:张文涛, 女, 1977 年12 月生, 博士生
  • 基金资助:

    国家自然科学基金资助(60103023,60083007);国家重点基础研究发展规划资助(G1999035810)

Design and Analysis of SAFER Block Cipher

ZHANG Wen Tao1, WU Wen Ling1, QING Si Han1   

  1. Institute of Software, Chinese Academy of Sciences, Engineeering Research Center for Information Security Technology, Chinese Academy of Sciences, Beijing 100080
  • Received:2001-11-12 Revised:2002-01-14 Published:2002-07-18

摘要:

SAFER系列密码算法的总体结构采用SP 网络,它的设计具有其独到的几个特色。分析SAFER系列密码算法的设计思想,沿着设计者对它们不断改进的思路,分别描述其混淆层、扩散层、密钥扩展算法的性质和对它们的攻击。最后提出几个尚需进一步考虑的问题

关键词: 分组密码, SAFER, 混淆层, 扩散层, 密钥扩展算法

Abstract:

The general structure of SAFER block ciphers adopts SP-network.It's desig n has some original features.In this paper, the design technique of SAFER block cipher is analyzed.Along the process of improvement of it's designers, we give a description of and attack on their confusion layer, diffusion layer and key schedule algo rithm.In the end, some problems about SAFER design are proposed, and will be studied later.

Key words: block cipher, SAFER, confusion layer, diffusion layer, key schedule

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