求一个常规的base64加密解密函数

sunafter

UDF里的源码实在没看懂，dllcall CallWindowProc一头雾水啊，大虾们给个常规的base64源码学习一下，谢谢了。
本来想自己写一个，想了半天就写了这一句。。。

#include <Array.au3>
Dim $basemap[64]=['A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','Q','R','S','T','U','V','W','X','Y','Z','a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','y','z','0','1','2','3','4','5','6','7','8','9','+',"/"]

sunafter

@afan

chishingchan

http://www.autoitx.com/thread-35935-1-1.html