Basic Auth

[JCHacking]

I see that JWT authentications and sessions are documented, how would a basic auth be implemented?

I have an Authentication object with the username and a list of permissions.

The idea I had was to connect to an ldap, validate those credentials, get the user permissions and then depending on the method validate one or the other. I have everything implemented except the rest api part.

I had thought about implementing a custom authentication, but I don't see it documented in the openapi for example.
I honestly don't know where to start.