Authentication
Principles
Just a hash challenge (actually using Whirlpool) to resolve for masters in order to authenticate themselves, using a symmetric key, that needs to be sent to slaves.
Key storage/auth methods
Plugins on master side can be made to store and do the hash in an other way than plain raw key storage on the master's filesystem.
Arduino/EEPROM method
Permissions
Key sending procedure
Log on the slave side :
Log of the master which stores and sends its key to the slave :
Log of the master which authorizes the first master to send the key, and chooses associated permissions :
Logs of initial key sending (accepting the first key without being authenticated) :
