Convenient and secure authentication system for mobile phone
Password authentication is the most commonly used identification method in the modern computer world. It consists of a combination of alphanumeric characters. But a long and complex character string, which is required to keep the password private, is not easily remembered. And with numeric mobile phone keypads, it takes long time to enter such a robust password. Therefore people tend to use shorter and simpler passwords, which makes the authentication weak, less secure and less reliable. This study proposes entry of icons displayed on a mobile phone LCD screen, instead of entering alphanumeric characters. Users preliminarily register several favorite icons with the order and the rhythm of entering each icon. At the authentication, all the icons appear again on the LCD screen but randomly rearranged, and users type the corresponding numerical key in the registered order and the rhythm (time interval between keystrokes). Such operation is much easier to remember and reduces the number of keystrokes, and still robust against importer. Time intervals between two successive keystrokes are gathered and analyzed at the moment of password registration and this information is then used for authentication. The relationship between tolerance and security is discussed and suitable compromises are given after a series of experiments.
Hiroyuki MIYAMOTO Kazuto ISHIKAWA
Department of Computer Science, Chiba Institute of Technology2-17-1, Tsudanuma, Narashino, 275-0016 Department of Computer Science, Chiba Institute of Technology 2-17-1, Tsudanuma, Narashino, 275-0016
国际会议
17th World Congress on Ergonomics(第十七届国际人类工效学大会)
北京
英文
1-4
2009-08-09（万方平台首次上网日期，不代表论文的发表时间）