基于Android的随机数序列的产生及检测

Generation and Test of Random Number under Android

在网络社会中,信息数据安全一直处于十分重要的地位,因而产生各种各样的数据加密算法,其中许多算法都需要一个随机数发生器。而在手机等移动领域,还未有很好的随机数发生器。研究在Android系统下,通过手机屏幕轨迹产生真随机数序列,并使用美国NIST建议的16种测试方法对随机性进行测试。经过测试该系统产生的随机数符合随机性,可直接应用于真实微信语音流的加密,亦可扩展到手机平台上其他类型的数据(如短信、视屏等)的加密,实用性比较广泛。

In the network society, information and data security has been in a very important position, resulting in variety of data eneryption algo- rithms; many algorithms require a random number generator. In the field of mobile phones, yet to have a good random number generator. Under Android system, studies true random number sequences generated by the phone screen trail, and uses the U.S. NIST recommended 16 kinds of test methods for random testing. After testing the system in line with the randomness of the random number generator that can be applied directly to Wechat to encrypted voice streams on mobile platforms can also be extended to other types of data （ such as text messaging, video, etc. ） encryption, it has wide practicability.