这是一个简单的加密解密程序，其中有加密和解密函数各一个，注意其中的文件调用，特别是它的路径。-This is a simple encryption and decryption procedures, which have encryption and decryption function of the 1, to call the document, particularly its path.

PowerBuilder加密解密函数。powerbuilder调用说明!-PowerBuilder encryption and decryption function. Powerbuilder call note!

一个用古典密码playfair加密文件的加密器,写这玩的,解密函数也在

UNIX平台下使用C语言实现的检查主机hostID的函数，可用于程序的加密。-UNIX platform using C language mainframe hostID inspection functions can be used to process the encryption.