In order to protect CATV scramblingsystem, random number generator and data encryption techniques are used.
为了保护有线电视加扰系统的安全，采用了随机数的产生、数据的加密等技术。
2
Kindergartens are considered essential to the education process, and the closing of many of them has created a private system, with families scrambling to raise the money to place their kids.
Through the classic image watermarking system contrast experiment, it proved that double chaos scrambling can enhance security and boost anti-offensive.