基于鼠标轨迹和混沌系统的真随机数产生器研究

提出了一种基于鼠标轨迹的真随机数产生器，并对该类产生器的优缺点、总体设计和基本技术进行了研究.为了消除相同用户鼠标轨迹中存在的相似性，利用混沌系统的敏感性，分别采用图像加密算法和Hash函数两种方法对鼠标轨迹进行后处理.大量严格的测试和实验表明，改进的基于混沌Hash函数的真随机数产生器具有安全、快速、方便和廉价的优点，可以在个人电脑上实际使用. 关键词： 混沌 真随机数产生器 鼠标轨迹

Ture random number generators based on mouse movement and chaos systems

True random number generator (TRNG) is usually more secure than pseudo_random number generator.In this paper,a novel TRNG which produces random bits by noving the mouse casually is proposed which is cheap,convenient and universal for personal computer (PC) platforms.To eliminate the patterns among mouse movements of the same user,two approaches based on image encryption algorithm and Hash function were poposed,both making use of the sensitivity of chaos system.Abundant random bits generated by three users were tested strictly using U.S. NIST's 16 statistical tests.All TRNGs passed the test successfully,and the revised TRNG is believed to be applicable practically on PC platforms.