RSA parser impl
Add KeyMatcher with RSA impl
AuthorizedKey and parser
build tweaks
make root name less confusing
Refactor to better separate parsing concerns
Move rsa stuff to its own package
Simplify and refactor key loading and matching
move ssh authorized key authenticator into its own module
Move test resources into place
Add a test for unknown type
pull some build config to root project
renaming things
use constant time comparisons for comparing RSA exponent, etc