| 基于细胞自动机的软键盘布局随机化方案 |
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| 引用本文： | 李鹏伟,傅建明,沙乐天,丁爽.基于细胞自动机的软键盘布局随机化方案[J].北方交通大学学报,2013(5):105-111,131. |
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| 作者姓名： | 李鹏伟 傅建明 沙乐天 丁爽 |
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| 作者单位： | [1]武汉大学计算机学院,湖北武汉430072;武汉大学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]武汉大学计算机学院湖北武汉430072;武汉大学空天信息安全与可信计算教育部重点实验室,湖北武汉430072;武汉大学软件工程国家重点实验室湖北武汉430072 |
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| 基金项目： | 国家自然科学基金资助项目（61202387）;高等学校博士学科点专项科研基金资助（20120141110002）;国家科技重大专项资助（2010ZX03006-001-01） |
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| 摘 要： | 软键盘被广泛应用于敏感信息输入,但攻击者有可能通过消息截获、控件分析、偷窥、截屏或鼠标记录等方法得到软键盘的输入信息.本文总结和拓展了攻击方法并对相应防御措施进行了探讨;针对键盘布局随机化这一重要防御措施,对现有各方案进行分析;最后设计实现了一种基于细胞自动机的,与输入信息内容和输入过程相关联的软键盘布局随机化方案CAR,实验表明,这一方案具有良好的安全性和可用性.
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| 关 键 词： | 信息安全 键盘记录器 软键盘 细胞自动机 随机化 |
Randomization of soft keyboard layout based on cellular automata |
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| LI Peng,FU Jianming,SHA Letian,DING Shuang.Randomization of soft keyboard layout based on cellular automata[J].Journal of Northern Jiaotong University,2013(5):105-111,131. |
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| Authors: | LI Peng FU Jianming SHA Letian DING Shuang |
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| Institution: | (a. School of Computer Science; b. State Key Laboratory of Aerospace Information Security and Trusted Computing, Ministry of Education; c. State Key Lab of Software Engineering;Wuhan University, Wuhan Hubei 430072,China) |
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| Abstract: | Soft keyboard is widely used to input sensitive information. However, attackers can in- tercept the input information of soft keyboard thro by attacks such as messages intercept, compo- nent analysis, peep, screenshots, or mouse record. First, we summarized and improved the exist- ing attacks and corresponding preventive measures. Then we evaluated the existing methods of keyboard layout randomization, which had a major impact on the safety of soft keyboard. Finally, we designed and implemented a layout randomization method based on cellular automata, which exploited the input information and the input process to enhance the randomization of soft key- board layout. Experimental results show that soft keyboards adopted on this method have good performance in both security and availability. |
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| Keywords: | information security keylogger soft keyboard cellular automata randomization |
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