Comment by hannesfur
13 hours ago
When you setup the robots you could load them with the PKI and then load each other robot joining with a signed certificate. Not ideal, I admit.
Another way would be to somehow prove that you belong.
13 hours ago
When you setup the robots you could load them with the PKI and then load each other robot joining with a signed certificate. Not ideal, I admit.
Another way would be to somehow prove that you belong.
This is a general problem with all federated systems.
It's annoying that we don't have a decent solution to this even for home automation. You ought to be able to take a "house ID key", probably a Yubikey, and present it to all your devices to tell them "you're mine now". Then they can talk to each other.
There are military cryptosystems which have such hardware. There's a handheld device called the Simple Key Loader.[1] That's what's used to load secure voice keys into radios, encrypted GPS keys into GPS units, identify-friend-foe codes into aircraft, and such. It's 15 years old, runs Windows CE, has a screen with a pen, and is far too big. The Tactical Key Loader is smaller and simpler.[2] 7 buttons and a small screen. About the same size as a Flipper Zero, but ruggedized and expensive.
[1] https://info.publicintelligence.net/SKLInstructionGuide.pdf
[2] https://www.l3harris.com/all-capabilities/kik-11-tactical-ke...