hashed-passport: A PHP repository from charlizesmith

Hashed Passport

Hashed Passport turns Passport's public Client IDs from this:

client_id: 1

into the more pleasing, beautiful and industry standard:

client_id: AE20JvpmdYx34wD789Lng5jyqelQar8R

While not touching any of the core Passport files. It uses a middleware decode the client_id on routes and an observer to make the hashed id available through the client_id parameter of the \Laravel\Passport\Client anywhere in the application.

Encryption of the client secrets is optional. These are saved in plain-text by default. After enabling this feature Hashed Passport turns a database entry of wOVl4sBrTU46KwaiV56yc9IftikEIcKfWYCpwosG

into

eyJpdiI6IkhDQlYyZDBpeUVCVHRsZGFcL3ZiejRBPT0iLCJ2YWx1ZSI6InFoUGRKcUFRaVwvc2t3Q1ZhVHhqM3lpaW05cm1FaXpObUtyNmd4QXNMU21mVmNhNW45N0lVTHJLa2prYlJpcmpnQzJqMTRXS1c3NWlaR2tcL01ZZmFNXC9RPT0iLCJtYWMiOiJhYzJmOTMwZWE2NTI4MWZiMTAxNDg5NTQ2NmFiNDU2YmZmOTcxOTIzMTVmNTU2Njk1N2ZlNzg5MzFiNmI5MTUzIn0=

Introduction

The idea for this package originated when I first started working with Laravel Passport. Having made a few APIs using Lumen and JWT it was jarring to discover that Passport used the auto-increment integer as the Client ID.

The pros and cons are all listed in this 2 year old issue. You can tell just how old it is by looking at the ID of the issue ;-)

Original Laravel/Passport Github Thread

Changelog

1.0 - Non-intrusive implementation of hashed Passport client IDs.
1.1 - Non-intrusive implementation of encrypted Passport client secrets.
1.2 - Added the option to customise the hashing salt, cleaned up the code and improved the readme.

Requirements

OPTIONAL: Encrypted Secrets

A database supporting VARCHAR(2048). If you use MySQL this means version 5.0.3+

Installation

Hashed Client IDs

Install via composer composer require ssmulders/hashed-passport

That's it! If you haven't tinkered with any default Laravel Passport routes, you're all set.

OPTIONAL: Encrypted Secrets

Add HashedPassport::withEncryption(); to the register method of your AppServiceProvider.
Run the php artisan migrate
Run php artisan hashed_passport:install

Voila! Your secrets are now stored with encryption and automatically decrypted after a DB retrieval.

OPTIONAL: Overwrite the APP_KEY Hashing Salt

Run php artisan vendor:publish --provider="Ssmulders\HashedPassport\HashedPassportServiceProvider"

Now update the salt key in config/hashed-passport.php with a custom string.

Further Usage and Customisation

Anywhere you access the Laravel\Passport\Client model a client_id parameter is made available. This is the hashed client id.

Add Middleware to additional Routes

After installation /oauth/token route will now accept both the the hashed id and the regular integer id on incoming requests.

To add this functionality to any other route, just attach the hashed_passport middleware like so:

Route::get('/oauth/clients', '\Laravel\Passport\Http\Controllers\ClientController@update')->middleware(['hashed_passport']);

The incoming hashed client_id string will now automatically be converted to it's integer value before being processed further by the application.

Change the hash salt

By default the hashing salt is the APP_KEY. To override this behaviour publish the config file to set a custom salt:

php artisan publish:config

How it works

Hashed ID

In order to work out-of-the-box the package overwrites the oAuth2 token route to accept the Client ID as a hashed string. Further more the hashed client id is made available on all Client models through the client_id parameter thanks to the ClientObserver. This same ClientObserver takes care of the encrypting and decrypting of the client secret (when enabled).

The hashed id is still based on the oauth_clients table's index column. All it does is transform that ugly integer into a beautiful hashed string, Cinderella style.

To do this a new connection is added to Hashids called client_id. This salt is based on your APP_KEY (unless configured otherwise).

Supported grant types:

password: verified

client_credentials: verified

authorization_code: untested (probably needs the middleware added to other routes)

Encrypted Secret

Similar to the hashed ID, the observer catches the Client when it's being saved and retrieved from the database.

Since the default VARCHAR(100) value for the secret column is insufficient for storing the lengthier encrypted secrets, that needs to be updated to VARCHAR(2048). It could be less, but I'd rather be safe than sorry. The actual maximum column character length has no impact on storage usage.

Running php artisan hashed_passport:install will then encrypt all the existing rows so their secret is encrypted. Once successful, you'll be greeted with a large lock. From now on all your client secrets are stored safely with Laravel's encrypt() helper.

Troubleshooting

The package should be compatible with any installation and can even be used with projects that are using the integer client_id in production, as it will support both versions of the client_id and encrypt the secrets of all clients.
Check your routes to make sure that /oauth/token uses the hashed_passport middleware: php artisan route:list. The same applies for any other routes you want to accept requests with hashed client_id from.

Uninstall

Should support for hashed IDs and encrypted secrets be added to Laravel Passport in the future, all you'd need to do in order to revert back to normal is follow these steps:

Run php artisan hashed_passport:uninstall to revert back to plain text secrets in your database.

Run composer remove ssmulders/hashed-passport to remove the package.

Remove HashedPassport::withEncryption(); from your AppServiceProvider

Run this SQL command DELETE FROM 'migrations' WHERE migration LIKE '%hashed_passport%' to update your migrations table and prevent rollback errors. php artisan migrate:refresh will work fine though.

Feedback

It's my first ever package so if you have any feedback on whatever, please leave a message! Learning how to create a package has opened up a whole new bag of appreciation for the wonder that's known as Laravel.

Feel free to open pull request(s) that improve on the functionality, or fix any bugs.

Credits

Thanks to @hfmikep and @nikkuang for being the first to properly start tackling this long-standing feature request. And once again to @hfmikep for for creating the code that's used in the UnHashClientIdOnRequest middleware. And to @corbosman for requesting the client secret encryption.

License

MIT License

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

charlizesmith/hashed-passport