New Hash Function
SELECT PASSWORD('aaaaaa') AS goodhash UNION
-> SELECT PASSWORD('aaaaab') UNION
-> SELECT PASSWORD('aaaaac');
+-------------------------------------------+
| goodhash |
+-------------------------------------------+
| *B1461C9C68AFA1129A5F968C343636192A084ADB |
| *E4CF0FD33485536A57EC1660C2B443D06F6367AA |
| *05B529FF460DF128463DFA53EF18C80CE427E9A0 |
+-------------------------------------------+]]>
Based on: SHA-1