收稿日期: 2016-07-27
修回日期: 2016-08-17
网络出版日期: 2016-09-30
基金资助
国家自然科学基金（No.61272492，No.61572521）资助
Differential Fault Analysis on Feistel Block Cipher in Internet of Things
Received date: 2016-07-27
Revised date: 2016-08-17
Online published: 2016-09-30
轻量级分组密码作为物联网环境下RFID标签及智能卡等设备通信安全的重要保证，其安全性十分重要。为此，分析了Feistel结构轻量级分组密码故障传播规律，并提出了一种深度差分故障分析方法。该方法基于半字节故障攻击原理，对按照Feistel结构设计的轻量级分组密码可根据故障密文与正确密文的差分分析得到相应密钥信息。对具体的密码算法建立3种不同的攻击模型：单轮半字节故障注入模型、多轮半字节故障注入模型、多轮两个半字节故障注入模型，分别进行差分故障攻击得到该密码算法受差分故障攻击的威胁程度。给出了Feistel结构密码算法LBlock的实验结果。
张博亮, 钟卫东, 杨晓元 . 物联网环境下Feistel结构分组密码的差分故障分析[J]. 应用科学学报, 2016 , 34(5) : 547 -554 . DOI: 10.3969/j.issn.0255-8297.2016.05.007
Light-weight block cipher provides protection of RDIF label and smart card in the communication of Internet of things, therefore its security is important. This paper analyzes fault propagation of the traditional light-weight block cipher with a Feistel structure and proposes a deep differential fault analysis strategy. The method is based on the half byte fault attack principle for a Feistel light-weight block cipher. The corresponding key information is obtained according to the difference between fault and correct cipher-texts. Three different attack models are established for specific cryptographic algorithms, i.e., single round half byte fault injection, multiple-rounds half byte fault injection, multiplerounds of two half byte fault injection, to obtain the most efficient way against attacks. Experimental results of the Feistel algorithms, LBlock, are presented.
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