cryptutil

func Apr1Crypt ¶

func Apr1Crypt(password string, salt string) string

This is the MD5 hashing function out of Apache's apr1 program. The algorithm is insane, but we have to match it. Mercifully I found a PHP variant of it at

http://stackoverflow.com/questions/2994637/how-to-edit-htpasswd-using-php

in an answer. That reads better than the original C, and is easy to instrument. We will eventually go back to the original apr_md5.c for inspiration when the PHP gets too weird. The algorithm makes more sense if you imagine the original authors in a pub, drinking beer and rolling dice as the fundamental design process. Note that this is the same algorithm used in md5Crypt except for the prefix in md5Crypt is $1$ while in apr1 it's $apr1$