arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1708.04871cs.CR
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SMAUG:使用手势的安全移动身份验证

SMAUG: Secure Mobile Authentication Using Gestures

Christian A. Gorke, Frederik Armknecht

摘要:

我们提出了SMAUG(使用手势的安全移动认证),一种新的生物特征辅助认证算法的移动设备,是完全基于从多个传感器,通常安装在现代设备上的数据收集-触摸屏,陀螺仪和加速度计。与现有的方法相反,我们的系统支持完全灵活的用户输入,如自由形式的手势,多点触摸和任意数量的笔画。我们的实验证实,这种方法提供了高水平的鲁棒性和安全性。更准确地说,在我们所有测试案例中,77%的手势在第一次身份验证尝试中被正确识别,99%的手势在第三次尝试后被正确识别,而在97%的测试案例中检测到攻击者。作为示例,在复杂性和可用性之间具有良好平衡的手势,例如,用两个手指同时画两条平行线,三次登录成功率为100%,冒名顶替者检测率为97%。我们强调,我们考虑的是最强大的攻击者模型:攻击者不仅可以在身份验证过程中监视合法用户,还可以接收有关生物特征的附加信息,例如压力,速度,旋转和加速度。我们认为这种方法是超越现有认证方法的重要一步,可以直接部署到使用中的设备,而无需额外的硬件。

英文摘要:

We present SMAUG (Secure Mobile Authentication Using Gestures), a novel biometric assisted authentication algorithm for mobile devices that is solely based on data collected from multiple sensors that are usually installed on modern devices -- touch screen, gyroscope and accelerometer. As opposed to existing approaches, our system supports a fully flexible user input such as free-form gestures, multi-touch, and arbitrary amount of strokes. Our experiments confirm that this approach provides a high level of robustness and security. More precisely, in 77% of all our test cases over all gestures considered, a user has been correctly identified during the first authentication attempt and in 99% after the third attempt, while an attacker has been detected in 97% of all test cases. As an example, gestures that have a good balance between complexity and usability, e.g., drawing a two parallel lines using two fingers at the same time, 100% success rate after three login attempts and 97% impostor detection rate were given. We stress that we consider the strongest possible attacker model: an attacker is not only allowed to monitor the legitimate user during the authentication process, but also receives additional information on the biometric properties, for example pressure, speed, rotation, and acceleration. We see this method as a significant step beyond existing authentication methods that can be deployed directly to devices in use without the need of additional hardware.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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