est ce que tu peux donner la structure de la table des utilisateur wordpress ?
Quel est l'encodage de password ?

si l'encodage de wordpress est en MD5, il ne derait pas y avoir trop de difficulté à utiliser la table user de wordpress pour Piwigo


paramètre à ajouter et adapter dans le fichier local de configuration

// +-----------------------------------------------------------------------+
// |                            authentication                             |
// +-----------------------------------------------------------------------+

// apache_authentication : use Apache authentication as reference instead of
// users table ?
$conf['apache_authentication'] = false;

// users_table: which table is the reference for users? Can be a different
// table than Piwigo table
//
// If you decide to use another table than the default one, you need to
// prepare your database by deleting some datas :
//
// delete from piwigo_user_access;
// delete from piwigo_user_cache;
// delete from piwigo_user_feed;
// delete from piwigo_user_group;
// delete from piwigo_user_infos;
// delete from piwigo_sessions;
// delete from piwigo_rate;
// update piwigo_images set rating_score = null;
// delete from piwigo_caddie;
// delete from piwigo_favorites;
//
// All informations contained in these tables and column are related to
// piwigo_users table.
$conf['users_table'] = $prefixeTable.'users';

// If you decide to use external authentication
// change conf below by $conf['external_authentification'] = true;
$conf['external_authentification'] = false;

// Other tables can be changed, if you define associated constants
// Example:
//   define('USER_INFOS_TABLE', 'pwg_main'.'user_infos');

// user_fields : mapping between generic field names and table specific
// field names. For example, in PWG, the mail address is names
// "mail_address" and in punbb, it's called "email".
$conf['user_fields'] = array(
  'id' => 'id',
  'username' => 'username',
  'password' => 'password',
  'email' => 'mail_address'
  );