Lol i expected a text about protecting relays from mechanical or electric problems. You know those real mechanical relays we used to build computers of some years ago
Same! Plenty of systems still use relays today such as the ... MTA Subway [0], ha. And elevators [1]. And definitely pinball machines [2]. And old telephony systems [3] although I doubt those kinds are still in service?
As far as I understand, some/many? industrial PLC systems are programmed using "ladder logic" which encodes logic as a (virtual) circuit of relays.
They were here before Shannon (used in telephone, rail signaling, etc.), got infused with math and a new meaning (formalized computing!) in his incredible master's thesis, and are still with us today.
My personal faves on the topic: Tim Hunkin's beautiful machines [4] which you can see in London, and his series on components - including relays of course! [5].
> A leaked token enables connections, but not impersonations. The token is addressed to one specific endpoint's public key
So now the problem is moved to "how do you decide who to issue tokens to?", which every project must solve individually. It might sound like I'm being dismissive here but I think that's exactly the right approach.
As far as I understand, some/many? industrial PLC systems are programmed using "ladder logic" which encodes logic as a (virtual) circuit of relays.
They were here before Shannon (used in telephone, rail signaling, etc.), got infused with math and a new meaning (formalized computing!) in his incredible master's thesis, and are still with us today.
My personal faves on the topic: Tim Hunkin's beautiful machines [4] which you can see in London, and his series on components - including relays of course! [5].
Cheers :-)
[0] https://en.wikipedia.org/wiki/Signaling_of_the_New_York_City...
[1] https://www.youtube.com/watch?v=wS3CkGzbsOo
[2] https://www.youtube.com/watch?v=uj8raZYHncQ
[3] https://www.youtube.com/watch?v=xZePwin92cI
[4] https://www.youtube.com/watch?v=dBbXkOY4oao
[5] https://www.youtube.com/watch?v=fdj_g_1tj4c
So now the problem is moved to "how do you decide who to issue tokens to?", which every project must solve individually. It might sound like I'm being dismissive here but I think that's exactly the right approach.