Getting the Authorization (Basic access authentication) Basic Auth Header from AEM Author is simple. If you have curl installed on your machine, simply run the command below, and you should be able to get the Authorization header from a successful AEM login.
What we are doing here is logging into the AEM author with curl using -v (verbose) & -u (user:pass).
curl -v -u admin:admin http://localhost:4502
curl response (line::8):
* Rebuilt URL to: http://localhost:4502/
* Trying ::1...
* TCP_NODELAY set
* Connected to localhost (::1) port 4502 (#0)
* Server auth using Basic with user 'admin'
> GET / HTTP/1.1
> Host: localhost:4502
> Authorization: Basic YWRtaW46YWRtaW4=
> User-Agent: curl/7.54.0
> Accept: */*
< HTTP/1.1 302 Found
< Location: /index.html
< Transfer-Encoding: chunked
* Connection #0 to host localhost left intact
Authorization: Basic YWRtaW46YWRtaW4=