WordPress.org

This plugin reverts storage of user passwords back to using MD5 hashing instead of the newer phpass hashing introduced in 2.5.

It is useful for people who need to maintain MD5 as the hashing type due to sharing of the WordPress user tables with other applications which require it.

If some of your passwords are already converted to phpass, do not fear. The next time those users log in to WordPress their passwords will be converted back to MD5.

Author: ryan