The text discusses computer's principle and method of special information encipher and decipher. The text indicates program example of encipher and decipher and its actual application.

计算机信息安全工作中,大量信息共享的基础上,选择特定重要的信息,进行加密和解密的可逆方法.举简单的加密程序和解密程序,最后探讨了加密应用操作的技巧.