Securing Display Path for Security-Sensitive Applications on Mobile Devices

• 作者: Anfeng Liu Jinhua Cui Yangyang Li Yuanyuan Zhang Zhiping Cai
• 来源期刊: 计算机、材料和连续体(英文)
• 学科: 工学
• 关键词: Mobile device secure DISPLAY VIRTUALIZATION TRUSTED computing base DISPLAY PATH trust ANCHOR
• 年，卷（期）: 2018,（4）
• 页码范围: 17-35
• 页数: 19页
• 分类号: TP3

摘要

While smart devices based on ARM processor bring us a lot of convenience,they also become an attractive target of cyber-attacks.The threat is exaggerated as commodity OSes usually have a large code base and suffer from various software vulnerabilities.Nowadays,adversaries prefer to steal sensitive data by leaking the content of display output by a security-sensitive application.A promising solution is to exploit the hardware visualization extensions provided by modern ARM processors to construct a secure display path between the applications and the display device.In this work,we present a scheme named SecDisplay for trusted display service,it protects sensitive data displayed from being stolen or tampered surreptitiously by a compromised OS.The TCB of SecDisplay mainly consists of a tiny hypervisor and a super light-weight rendering painter,and has only~1400 lines of code.We implemented a prototype of SecDisplay and evaluated its performance overhead.The results show that SecDisplay only incurs an average drop of 3.4%.