Firstly, this paper explained the RAM information on the CMOS chip. Then it expounded the principle and method of using the information to encrypt a file and gave the concrete programming. The practice testified that this method was simple and effective.

• 首先讲述了CMOS芯片上的RAM信息 ,然后阐述了利用该信息对文件进行加密的原理和方法 ,并给出了具体的实现程序 ,实践证明 ,这种方法简单易行 ,效果很好。