Laravel 5.6 Hash - laravel

Question

I know the question was already ask but i have tried without success.
We have an old database with SHA256 and double salt and we wan't to use this for Register and Login.
I have follow this tutorial and many more : https://conceptsandimplementation.wordpress.com/2017/03/07/replace-laravels-default-password-hash-bcrypt-with-base64-encode/
This my code :
namespace App\Libs\CustomHash;
use Illuminate\Contracts\Hashing\Hasher as HasherContract;
class CustomHasher implements HasherContract {
public function info($hashedValue) {
}
/**
* Hash the given value.
*
* #param string $value
* #return array $options
* #return string
*/
public function make($value, array $options = array()) {
$PasswordHashed = 'a5df5z' . $value . 'a45ee1a';
$PasswordHashed = hash('sha256', $value);
return $PasswordHashed;
}
/**
* Check the given plain value against a hash.
*
* #param string $value
* #param string $hashedValue
* #param array $options
* #return bool
*/
public function check($value, $hashedValue, array $options = array()) {
return $this->make($value) === $hashedValue;
}
/**
* Check if the given hash has been hashed using the given options.
*
* #param string $hashedValue
* #param array $options
* #return bool
*/
public function needsRehash($hashedValue, array $options = array()) {
return false;
}
}
And :
namespace App\Providers;
use Illuminate\Hashing\HashServiceProvider;
use App\Libs\CustomHash\CustomHasher as CustomHasher;
class CustomHashServiceProvider extends HashServiceProvider
{
public function register()
{
$this->app->singleton('hash', function () {
return new CustomHasher;
});
}
}
Here my providers list
//Illuminate\Hashing\HashServiceProvider::class,
App\Providers\CustomHashServiceProvider::class,
I know that's not a good practive to use SHA but i do not have the choice.
Thank's in advance for you're help.