支持lua的md5加密库

# MD5 - Cryptographic Library for Lua http://keplerproject.github.io/md5/ MD5 offers basic cryptographic facilities for Lua 5.1: a hash (digest) function, a pair crypt/decrypt based on MD5 and CFB, and a pair crypt/decrypt based on DES with 56-bit keys. MD5 current version is 1.2. Please check the documentation at /doc/us/ for more information. ## Installation To install using [LuaRocks](https://github.com/keplerproject/luarocks) run: ``` luarocks install md5 ``` To install on Linux/OSX/BSD, please edit the config file and then call ``` make make install ``` The last step may require root privileges. ## History Version 1.2 [06/Sep/2013] * Code adapted to compile for Lua 5.0, 5.1 and 5.2 Version 1.1.2 [12/May/2008] * Fixed bug in 64-bit systems * Fixed the Windows makefile to accept longer directory names (patch by Alessandro Hecht and Ignacio Burgueño). ## License MD5 is free software and uses the same license as Lua (MIT). The DES 56 C library was implemented by Stuart Levy and uses a MIT license too (check the source).