对文件内容进行加密，生成密钥，解密时用密钥解密的过程，本程序使用了锁技术，为UNIX下的加解密及文件操作提供了很好的帮助。-The contents of the file encryption, key generation, decryption key to decrypt the process, the program uses the lock technology, provides a good help for the encryption and decryption and