bbPress.org

Hi – there are several threads relating to this. Short answer:

The multiple keys are used in both — notably in bb-config.php:

define( ‘BB_AUTH_KEY’, ‘xxxxxxxxxxxxxxxxxx’ );

define( ‘BB_SECURE_AUTH_KEY’, ‘xxxxxxxxxxxxxxx’ );

define( ‘BB_LOGGED_IN_KEY’xxxxxxxxxxxxxxxxxxx’);

Should match the similar keys (of the five or so) listed in your wp-config.php file.

https://bbpress.org/forums/topic/login-in-problems-with-wordpressbbpress

https://bbpress.org/forums/topic/basic-integration-screencast/page/3