This is a library that can be loaded into Varnish for exposing an md5 hash function. I had a need to call an md5 function on a string and stuff it into a Req header, so I wrote this library and figured out how to integrate it into Varnish. To use this library you must take the following steps: 1 - Run "make all" to build the library 2 - Copy the example from the md5.vcl file in this repo and make sure the path to libmd5varnish.so is in the right place 3 - Use (char*)md5_hash() via inline C wherever you need to call an MD5 hash