Feed Key adds a 32bit (or 40bit) key for each of your users, creating a unique feed url for every registered on user the site. This allows you to rest
The settings for Feed Key are very straight forward. You can choose how the Feed Keys on your site are generated with controls over the character set of the input key, the length of the input key, what to use as the salt when hashing the input key and what algorithm(s) you what to hash the input key with.
You can also choose whether user of your site can reset their own Feed Keys from their user profiles or you can leave this to Admins.
What are Feed Keys?
Feed Keys, are unique 32bit (or 40bit) keys that are added to your blog's URL in order to give every registered user a custom feed URL.
A Feed Key looks something like this:
This is then appended to the feed url for your user in their User Profile, like the examples below, either without permalinks...
...or with permalinks
When a user visits a feed on your site, Members Only checks to see if there is a Feed Key in the query section of the feed URL and checks whether it is stored in the @wp_usermeta@ table of your WordPress database. If it finds the Feed Key in the database it allows access to the feed, otherwise it presents the user an error. An error will also be give if no Feed Key is found in the feed URL. Errors are presented to the user in form of RSS feeds that are generated by Feed Key.
How and When are Feed Keys Generated?
By default, a Feed Key is generated by creating a 32bit random alpha-numeric-case-insensitive string that is then hashed (using
md5) against the user's username, insuring that no two users can ever have the same.
You can choose to use
sha1, rather than
md5, to hash your Feed Keys and you will have a 40bit rather than a 32bit key. If your using both sha1 and md5, the key length of the Feed Key is governed by the algorithm used last. You also have control over the character set used to generate the input key, as well as the length. The input key is hashed against either the user's username or email to create the Feed Key.
Feed Keys are generated for the first time when the user logs in to your blog. If they don't have a Feed Key, one generated for them and stored in the
wp_usermeta table in your database, otherwise they will use the one that is already stored in the database. An admin can also manually generate a Feed Key for a user by visiting there user profile and choosing the option.
If you allow it, users can also reset their Feed Keys from their user profiles or you can leave this to Admins.
No known issues at this time.
If you find any bugs or want to request some additional features for future releases, please log them the projects tracker page