A composer package for generating and verifying One Time Passwords (OTP) in Laravel 11+.
You can install the package via composer:
composer require njoguamos/laravel-otp
You can publish and run the migrations with:
php artisan vendor:publish --tag="otp-migrations"
php artisan migrate
You can publish the config file with:
php artisan vendor:publish --tag="otp-config"
This is the contents of the published config file:
return [
/*
|--------------------------------------------------------------------------
| OTP Length
|--------------------------------------------------------------------------
|
| This is the length of the generated OTP token. By default it is set to
| 6 digits. The length of the OTP must be at least 4 digits to ensure
| that the OTP is not easily guessable
|
*/
'length' => env(key: 'OPT_LENGTH', default: 6),
/*
|--------------------------------------------------------------------------
| OTP Validity time by minutes
|--------------------------------------------------------------------------
|
| This is the validity time of the generated OTP token. By default it is
| set to 10 minutes. This means that the OTP will be valid for 10 minutes
| after it is generated. You can change this value to suit your needs.
|
*/
'validity' => env(key: 'OTP_VALIDITY', default: 10),
/*
|--------------------------------------------------------------------------
| Digits Only
|-------------------------------------------------------------------------
|
| When set to true, the generated OTP will only contain digits. When set
| to false, the generated OTP will contain both digits and alphanumeric
| characters which makes it more difficult to guess the OTP.
|
*/
'digits_only' => env(key: 'OTP_DIGITS_ONLY', default: true),
];
To generate an OTP, you can use the generate()
method on the Otp
class. . This method takes an identifier
as a parameter. The identifier
can be and email address, phone number, or any other unique identifier that you want to use to identify the user.
use NjoguAmos\Otp\Otp;
$otp = Otp::generate(identifier: '[email protected]');
$otp->identifier; # [email protected]
$otp->token; # 123456
$otp->expires_in; # 10 minutes
The generate()
method returns an instance of the \NjoguAmos\Otp\Models\Otp
Eloquent Models class. You can access the identifier
, token
, and expires_at
properties of the Otp
class.
For example: you can use the token
property to send the OTP to the user's email address.
use NjoguAmos\Otp\Otp;
use App\Mail\OTPMail;
use Illuminate\Support\Facades\Mail;
$email = '[email protected]';
$otp = Otp::generate(identifier: $email);
Mail::to($email)->send(new OTPMail($order));
To verify an OTP, you can use the validate()
method on the Otp
class. This method takes an identifier
and token
as parameters.
If the OTP is valid, the method will return true
. Otherwise, it will return false
.
use NjoguAmos\Otp\Otp;
$email = '[email protected]';
$otp = '123456';
$validated = Otp::validate(identifier: $email, token: $otp->token);
$validated // True or False
Note
It is advisable not to let the user know if the OTP does not match, or does not exist or expired. You can return a generic message to the user instead.
To periodically delete expired OTPs, you can use the model:prune
Artisan command. This command will delete all expired OTPs from the database.
To do so, add model:prune
to your routes/console.php
file:
use Illuminate\Support\Facades\Schedule;
use NjoguAmos\Otp\Models\Otp as OtpModel;
Schedule::command('model:prune', ['--model' => [OtpModel::class]])->everyFiveMinutes();
Tip
Make sure the duration is greater than the validity time of the OTP.
Tip
To prevent brute force attacks, rate limit the number of attempts to generate
or verify
an OTP tokens. This can be done by using the Laravel RateLimit
middleware.
User can verify tokens as long as they are valid. This means that the user can have multiple valid tokens.
Once the token expires, it cannot be valid even if it still exists in the database.
Schedule the model:prune
command to run every 5 minutes to delete expired tokens.
composer test
Please see RELEASE for more information on what has changed recently.
Please see CONTRIBUTING for details.
Please review our security policy on how to report security vulnerabilities.
The MIT License (MIT). Please see License File for more information.