There is a strange, 24K application called AuthApp in my
/Library/Application Support folder. I don't know what it does or which
installer put it there.

Does anyone know?

Apple Developer services has a sample code called "authapp.c" that says
it is the "correct way to do authorization services"...so maybe this is
the application built from that code.

--
James Meiss
<http://amath.colorado.edu/faculty/jdm>