Extended PIN Authentication Scheme Allowing Multi-Touch Key Input

Tetsuji Takada, Yuki Kokubun
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引用次数: 10

Abstract

In this paper, we report our trial to make a better form of personal identification number(PIN) authentication for a mobile device. We think that mobile users should be given a more secure alternative authentication because PIN authentication has well-known flaws. However, proposed alternative schemes change the authentication method drastically and that may discomfort mobile users. Our approach is to just change the input operation of PIN authentication by allowing more than one number at a time using a multi-touch enabled screen. We implemented a web-based prototype system and conducted an informal user study using it. The results of the study indicate that PIN input time, input errors and secret memorability of the proposed scheme were no worse than those of conventional PIN authentication. We also discuss the mathematical security level and other advantages of the scheme.
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扩展PIN认证方案,允许多点触摸键输入
在本文中,我们报告了我们的试验,使一个更好的形式的个人识别号码(PIN)认证的移动设备。我们认为应该为移动用户提供更安全的替代身份验证,因为PIN身份验证存在众所周知的缺陷。然而,提出的替代方案极大地改变了身份验证方法,这可能会让移动用户感到不适。我们的方法是通过使用多点触控屏幕,允许一次输入多个数字来改变PIN身份验证的输入操作。我们实现了一个基于web的原型系统,并使用它进行了非正式的用户研究。研究结果表明,该方案的PIN输入时间、输入错误和秘密记忆性均不低于传统的PIN认证方法。讨论了该方案的数学安全级别和其他优点。
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