How to import md5 salt passwords from symfony to laravel 4 -

the user table old symfony system has following columns:

email               | algorithm   | salt                              | password --------------------+-------------+-----------------------------------+------------- techytimo@gmail.com | sha1        | ea579e44dd150e5ba6680d6a3cee26b4  | f48598ad17acf18583d8499d7c6abc430929ae49 

the new system created laravel 4 has following columns:

email               | password --------------------+----------------------------------------------------------- techytimo@gmail.com | $2y$08$zz3rviw4qjfd5idtfzpw3orh0hxgo8brbxfoniqcvu33/ywqkuae 

how import 3000 accounts passwords old system new system without having users register again?

also way encrypt passwords laravel 4 in same format help.

a workaround extends auth module in laravel, implement hash solution symfony.
rewriting auth::attempt(), hashing password way want to, work.
same hash::x, have rewrite function in auth class hash new users password same way.

---

how can implement hash method :

create library in folder name libraries app, then, create serviceprovider :

libraries\symfonyhasherserviceprovider.php

use illuminate\support\serviceprovider;  class symfonyhasherserviceprovider extends serviceprovider {      public function register()     {         $this->app->bind('hash', function()         {             return new symfonyhasher;         });     }  } 

then, create hasher, copy of symfony hash method :

libraries\symfonyhasher.php

class symfonyhasher implements illuminate\hashing\hasherinterface {      public function make($value, array $options = array())     {         /* make hash here */     }      public function check($value, $hashedvalue, array $options = array())     {         return $hashedvalue == $this->make($value);     }  } 

replace 'illuminate\hashing\hashserviceprovider' 'symfonyhasherserviceprovider' in service providers array in app.php config, add 'app/libraries' autoload classmap in composer.json

i don't know how symfony make hashes, have search how symfony make hashes abd implement need do.