[Roi] ALTACHA CAPTCHA 1.1.0

A XenForo add-on that integrates the ALTCHA human verification system, providing a modern, privacy-friendly CAPTCHA alternative that offers better protection against bots with a smooth user experience.

Github: github.com



Notes
This add-on uses ALTCHA Server Integration with the “Verifying without Sentinel” mode. Thanks to this, it works completely independently and it is completely free to use. It does not depend on, require, or support ALTCHA Sentinel.

Hence, this add-on does not support the advanced features provided by ALTCHA Sentinel.

Configuration
Admin Control Panel -> Setup -> Options -> User registration -> Enable CAPTCHA for guests

Private Secret Key: Your ALTCHA private secret key. This key used to HMAC sign the verification requests. Make sure to keep it secure and do not share it publicly.

Complexity: A numeric value that determines the difficulty of the challenges presented to users. Higher values increase security but may impact user experience.

ALTCHA Script URL: The URL of the ALTCHA JavaScript file to be included on pages where verification is required. Default is cdn.jsdelivr.net . See ALTCHA Documentation for more details.

i18n JS URL: The URL of the ALTCHA internationalization JavaScript file to support multiple languages. See ALTCHA Documentation for more details.

Compatibility
Developed and tested for XenForo 2.3.3 and PHP 8.3.14

Technically compatible with XenForo 2.2+ and PHP 8.2+ but not officially tested.

Acknowledgements
ALTCHA
altcha-lib-php

License
This add-on is licensed under the MIT License. See the LICENSE file for more details.