I need to import customers from the other shop system (oxid e CE) to Magento 1.9. The best result would be reusing their password, so the customers can log in with their existing data into the new shop.
As far as I know, oxid uses md5 hash plus salt for encryption. Is it possible to use these both fields to generate a md5 hash that Magento can use?
If not possible, I would try to display a message on login attempt for the imported customers that they will receive a mail with a link to reset their password. What would be the best approach for this method?
I think something like to pre-dispatch the login event and to check if this customer is one of the imported and has not reset his password.