Enable authentication with fallback codes
This module aims to help create an multi-factor authentication method for SilverStripe, by bootstrapping an unregistered authenticator with Backup tokens to have a basic start.
Current stage is a pretty basic implementation, but it should get you started pretty fast. For example of implementation, see https://github.com/Firesphere/silverstripe-yubiauth/tree/mfa-base
composer require firesphere/bootstrapmfa
First, after installation, create your MFA module. (or use an existing one that bolts on top of this one)
The module in itself does nothing but create the basic requirements for 2-factor token-based backup login. It does not provide active 2FA login methods.
Your Authenticator should extend
In the validation method, if the intended MFA method fails, you can fall back on the
This is the Bootstrap Authenticator, that will let people login with one-time text-tokens.
Your second-factor form needs to be it's own form, but has to have a field named
token, which can fall back via the Bootstrapper..
This can be done on creation of the Member, via
--- name: AppMFAAuthenticator --- Firesphere\BootstrapMFA\BackupCode: token_limit: 15 # Default amount of tokens Firesphere\BootstrapMFA\CodeGenerator: length: 6 # Length of the codes type: numeric # Type of the codes, numeric|mixed|characters case: mixed # Casing of the characters. upper|lower|mixed
In the CMS, a new set of tokens can be requested.
If a user resets its password, the login-screen will show the created new tokens (once)
Tokens are stored encrypted and can not be retrieved, only validated.
This module is meant to be extended and not work on it's own. It only supplies fallback codes, like other MultiFactor authentication sites do.
When building an MFA module on top of this, a few things are required:
- Your MFALoginHandler extending BootstrapMFALoginHandler
- Your MFAProvider implementing the MFAProvider
- Your authenticator extending BootstrapMFAAuthenticator
- Must call the validateBackupCode method to validate the MFA backup codes
An example of how to use this can be found at firesphere/silverstripe-yubiauth
A non-functional demo module is expected to be released soon~ish
This module is published under BSD 3-clause license, although these are not in the actual classes, the license does apply:
Copyright (c) 2017-NOW(), Simon "Firesphere" Erkelens
All rights reserved.
Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
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