bbysaeth/typo3-altcha

TYPO3 form element for spam protection by utilizing the proof-of-work mechanism ALtcha.

v0.4.0 2024-08-03 14:40 UTC

Requires

• typo3/cms-core: ^12.4.0 || ^13.0 || 13.0.x-dev
• typo3/cms-extbase: ^12.4.0 || ^13.0 || 13.0.x-dev
• typo3/cms-fluid: ^12.4.0 || ^13.0 || 13.0.x-dev
• typo3/cms-form: ^12.4.0 || ^13.0 || 13.0.x-dev

Requires (Dev)

• helmich/typo3-typoscript-lint: ^3.2

Suggests

• typo3/cms-scheduler: ^12.4.0 || ^13.0 || 13.0.x-dev

GPL-2.0-or-later

• Benjamin Bysäth

• recaptcha
• spam
• captcha
• bot
• Abuse
• typo3
• proof-of-work
• spam-protection
• ALTCHA

README

This TYPO3 extension integrates Altcha, an innovative alternative to traditional captchas, into the Form Extension. Altcha employs a proof-of-work approach to safeguard forms against spam and abuse without requiring users to solve visual puzzles. Key Features:

• Seamless integration with the TYPO3 Form Extension
• Configurable difficulty levels for the proof-of-work mechanism
• Automatic validation of Altcha responses
• Enhanced protection against automated bots
• User-friendly alternative to conventional captchas

The extension empowers developers to easily incorporate Altcha into existing forms, thereby enhancing security without compromising user experience.

Features

• Altcha spam protection field for ext:form
• Customizable expiration time of challenges
• Scheduler task for removing obsolete(expired and solved) challenges

Installation

via Composer

The recommended way to install TYPO3 Console is by using Composer:

composer require bbysaeth/altcha

Add static template and update database scheme.

This TYPO3 extension is licensed under the GNU General Public License Version 2 (GPLv2).

via TYPO3 Extension Repository

Download and install the extension with the extension manager module or directly from the TER.

Configuration

Extension Configuration

HMac Sercret Key (basic.hmac [string]) HMAC secret key for challenge generation, if not defined TYPO3 encryption key will be used.

TypoScript configuration settings

The following TypoScript settings are available.

• plugin.tx_altcha.minimumComplexity(integer) Minimum number for range of complexity
• plugin.tx_altcha.maximumComplexity (integer) Maximum number for range of complexity, must be bigger than minimumComplexity
• plugin.tx_altcha.expires (integer) Seconds after the challenge expires
• plugin.tx_altcha.hideFooter (bool) Hide/Show altcha footer link in field
• plugin.tx_altcha.hideAltchaLogo (bool) Hide/Show altcha logo in field
• plugin.tx_altcha.auto (Choose: disabled,onload,onfocus) Enable/Disable auto verify onload or onfocus

License

This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.