Reversibly encrypted passwords in SQL

Hello, is there any way of using reversibly encrypted passwords together with a mySQL backend? Currently, our passwords are stored as User-Password in clear text. I'd like to move on to using something like Crypt-Password := {algo-prefix}blablabla with an algorithm that encrypts reversibly. I failed to see a list of supported algorithms in the docs, a pointer would be nice... Greetings, Stefan Winter -- Stefan WINTER Stiftung RESTENA - Réseau Téléinformatique de l'Education Nationale et de la Recherche Ingenieur Forschung & Entwicklung 6, rue Richard Coudenhove-Kalergi L-1359 Luxembourg E-Mail: stefan.winter@restena.lu     Tel.:    +352 424409-1 http://www.restena.lu               Fax:      +352 422473