轻量哈希函数HBL  

HBL:lightweight Hash function

作　　者：余纯武[1] 郭龙飞[1] 张健[1] YU Chunwu;GUO Longfei;ZHANG Jian(School of Computer, Wuhan University, Wuhan 430072, China)

机构地区：[1]武汉大学计算机学院,武汉430072

出　　处：《计算机工程与应用》2016年第20期1-4,91,共5页Computer Engineering and Applications

基　　金：湖北省自然科学基金(No.2013CFB295)

摘　　要：如今越来越多的物联网设备带来了对哈希函数的需求,而传统的哈希函数又因为资源受限而不能直接应用,所以必须得针对该类设备重新设计,提出了一种新的轻量哈希函数HBL(Hash Function Based on LEA),它采用了主流的哈希函数构造方式,由域扩展和内部变换组成。摘要长度为128位,其中域扩展结构为海绵结构,内部变换为一种经过修改和优化的8轮分组变换。采用理论和实验相结合的方式进行了安全性评估及执行效率分析,得到HBL对于差分攻击,原像攻击,碰撞攻击,线性攻击和滑动攻击具有较好的抵抗性,并且具有良好的效率。Today, more and more devices used in the Internet of things brought about a great need of Hash function, buttraditional Hash functions can’t be applicated directly because of the restrained resources, so it must be redesigned forthose devices. A new lightweight Hash function called HBL(Hash Function Based on LEA)is proposed in this paper,which constructed in a popular way, including domain extender and internal permutation, both of its key size and digestsize are 128 bit, in which the domain extender adopts a sponge structure and the internal permutation is an 8-round blockpermutation. A security analysis and an execution efficiency analysis are made by a way combined theories and experiments,and it is found that HBL presents a good resistance to differential attack, preimage attack, collision attack, linear attackand slide attack, also has a good efficiency.

关 键 词：哈希函数 海绵结构 安全分析 执行效率 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]