Michal, This is to answer your question in the git comment about updating Blowfish library.
Indeed it would be a good idea to switch to PEAR package Crypt_Blowfish. By the way, did you test the new version from Horde?
I am curious about the response time, because we found in the past that running Blowfish encryption in PHP (for those who don't have the mcrypt PHP extension) added many seconds of delay *for each click in phpMyAdmin*.