Laravel - problem with Crypt::decrypt, wrong syntax in code

I know that my solution is wrong, but can someone help me with correct syntax how decrypt my string and log in ?

Laravel API resived code and store encrypted in Database

api route

Route::post('data','DataImport@Insert');

controller

use Illuminate\Support\Facades\Crypt;

function Insert(Request $request)
{
    $user=new User();
     $user->code=Crypt::encrypt($request->input('code'));
    return $user->save();
}

Auth\Controller

use Illuminate\Support\Facades\Crypt;

public function postLogin(Request $request)
{
    request()->validate([
        'id_message' => 'required',
        'code' => 'required',
    ]);
   
    $credentials = $request->only('id_message', 'code');
    $decrypted = $request->input('code'); 
    $request->session()->flash('success');

    if ($user=User::where($credentials)->first()) {
        if (\Crypt::decrypt($user->code) == $decrypted) {
            Auth::login($user);
            
        return redirect()->intended('dashboard')->with('success');
        }
    }
    //dd($decrypted);

    return Redirect::back()->with('error');
}

dd($decrypted);

 array:1 [▼
 "code" => "123456"
]

decrypted code is in correct value. No error in laravel.log only message code does not match.

thanks for any help.

(solution with hash, dont help me with this problem)

via Chebli Mohamed