Laravel Custom Hasher

README.md

Laravel Custom Hasher

When you need to hash and check passwords using an algorithm other than supported bcrypt or argon there is an easy way to add a custom one. When I needed to use md5 for a legacy project I have tried to quickly google a solution and most I had found were based on creating a ServiceProvider which completely overrides builtin HashManager. The other way would be to extend it instead. So I have added a following into my AuthServiceProvider's boot() method:

$this->app->make('hash')->extend('md5', function() {
    return new Md5Hasher;
});

Then, created a hasher itself:

<?php

namespace App\Auth\Hashing;

use Illuminate\Contracts\Hashing\Hasher as HasherContract;
use Illuminate\Hashing\AbstractHasher;

class Md5Hasher extends AbstractHasher implements HasherContract
{

    /**
     * Hash the given value.
     *
     * @param  string $value
     * @param  array $options
     * @return string
     */
    public function make($value, array $options = [])
    {
        return md5($value);
    }

    /**
     * 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 = [])
    {
        return false;
    }

    /**
     * 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 = [])
    {
        return $this->make($value) === $hashedValue;
    }
}

And finally in config/hashing.php configuration file you can set your default driver:

'driver' => 'md5',

With this method you can still use other drivers with Hash facade:

$hash_default = Hash::make('test'); // Uses default driver
$hash_bcrypt = Hash::driver('bcrypt')->make('test'); // Uses 'bcrypt' driver

still works in Laravel 11, some changes required, because the AuthServiceProvider is missing. So you have to create it under App\Providers namespace, extending Illuminate\Auth\AuthServiceProvider, then add it to the bootstrap\providers.php file (it moved out from config\app.php). The rest is the same.