ref: a2c587e7d7a8b72a7ef9afcd119d8cfb20076b54
dir: /qw/docs/notes.txt/
new server auth design; - server includes 32bit random token S - master sees new server, request auth with MD5(M|S). m is 32bit master key - server sends register MD5( MD5(M|S) | S ) - master validates registration with server - M value changes for each server randomly