基于双伪随机变换和Feistel结构的轻量级分组密码VHF  

VHF:A Lightweight Block Cipher Based on Dual Pseudo-random Transformation and Feistel Structure

作　　者：代学俊[1] 黄玉划[1] 刘宁钟[1] DAI Xue-jun HUANG Yu-hua LIU Ning-zhong(College of Computer Science and Teehnology, Nanjing University of Aeronautics and Astronautics,Nanjing 210016, Ghina)

机构地区：[1]南京航空航天大学计算机科学与技术学院,南京210016

出　　处：《计算机科学》2017年第2期192-194,201,共4页Computer Science

基　　金：江苏省科技支撑计划项目(BE2013879);南京航空航天大学青年科技创新基金项目(NS2010097)资助

摘　　要：针对资源受限的移动终端对轻量级密码的需求,提出了一种基于双伪随机变换和Feistel结构的新的轻量级分组密码算法VHF。类似于许多其他轻量级分组密码,VHF的分组长度为128bit,密钥长度为80bit和128bit。VHF的安全评估结果表明,其可以对已知的攻击实现足够的安全性,如差分分析、线性分析和不可能差分分析等。在安全的基础上测试软件效率及硬件实现,与现有的轻量级分组密码进行的对比表明,VHF的软硬件效率都高于同为面向8位平台的国际标准CLEFIA算法。A new lightweight block cipher based on double pseudo random transform and Feistel structure called VHF was proposed for the demand of the resource constrained mobile terminal for the lightweight cipher.Similar to many other lightweight block ciphers,the block size of VHF is 128 bit and the key size is 80 bit and 128 bit.Security evaluation of VHF shows that VHF can achieve enough security margin against known attacks,such as differential cryptanalysis,linear cryptanalysis,and impossible differential cryptanalysis etc.Furthermore,VHF can be implemented efficiently not only in hardware environments but also in software platforms such as 8bit microcontroller.The implementation efficiency of both software and hardware based on VHF is higher than CLEFIA algorithm,which is the international standard also oriented to 8bit platform.

关 键 词：轻量级分组密码 硬件实现 安全分析 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]