这是一个加密解密算法的小程序，加密解密为对称算法。

加密算法使用替换模板和字符冗余，对每个字符的加密依规则分别生成子密钥，算法具有一定安全性，具体算法请见，算法说明.doc文件。

程序在vs.net2005下编译通过。-This is a small encryption and decryption algorithm procedure for symmetric encryption and decryption algorithm. Encryption algorithm to replace the use of templates and characters redundancy, for each character according to the rules of the respective encryption key generator, the algorithm has a certain security, please refer to the specific algorithm, the algorithm descr iption. Doc files. Vs.net2005 under procedures adopted by the compiler.