面向IoT固件测试的外设寄存器分类改进方案  

Improved peripheral register category scheme for IoT firmware testing

作　　者：王丽娜[1,2] 陈思 张桐[1,2] 秦鹏 徐来 WANG Li-na;CHEN Si;ZHANG Tong;QIN Peng;XU Lai(Key Laboratory of Aerospace Information Security and Trusted Computing,Ministry of Education,Wuhan 430072,Hubei,China;School of Cyber Science and Engineering,Wuhan University,Wuhan 430072,Hubei,China)

机构地区：[1]空天信息安全与可信计算教育部重点实验室,湖北武汉430072 [2]武汉大学国家网络安全学院,湖北武汉430072

出　　处：《山东大学学报（理学版）》2022年第5期85-91,共7页Journal of Shandong University(Natural Science)

基　　金：国家自然科学基金资助项目(U1836112,61876134);国家自然科学基金重点资助项目(U1536204)。

摘　　要：通过模拟固件与外设间数据传递接口的固件托管方案,为IoT固件测试提供了一种新的解决思路,但基于固件托管的测试方案效果受到外设寄存器类别判断准确率的影响。通过研究固件托管的原理细节,可以发现其对寄存器类别判断时存在的问题,并能够利用一组合理的纠正方案,综合多个固件的测试结果,提升其对外设寄存器分类的准确率,且仅产生极小的开销。经过对4种微控制器下的54个不同固件进行测试,方案能够在绝大多数情况下提升寄存器类别判断的正确率,使固件测试效果有效提升。By emulating the data interface between microcontroller and peripherals, rehosting proposed a new way to test firmware, but it is affected by the accuracy of peripherals registers it has categorized. By studying the details of firmware hosting, the problems in the register category can be found, and a set of reasonable correction schemes to synthesize the test results of multiple firmware can be adopted to improve the accuracy of its classification of peripheral registers, with very low overhead. After testing 54 different firmware under 4 types of microcontrollers, the solution can improve the accuracy of register classification judgments in most cases, and effectively improve the effect of firmware testing.

关 键 词：软件测试 微控制器 固件托管 物联网 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]