Raspberry Pi

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Raspberry Pi is a series of small single-board computers. It is widely used in many areas because of its low cost, modularity, and open design. It is typically used by computer and electronic hobbyists.

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Secure use of remote control ? (programming.dev)

submitted 3 weeks ago by Rick_C137@programming.dev to c/raspberry_pi@programming.dev

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Hi Raspberry Pi Community,

I would like to use radio remote's control to trigger an events on my Raspberry pi.

I guess I'll go with 433Mhz as I believe they are the most common available ?

So I will need a 433Mhz RX/TX Module to connect on the GPIO, so far I get it...

But how properly secure the communication between those remotes and the RPI to avoid any anyone to sniff the transmitting and replay it. In other words spoof it.

Wubba Lubba dub-dub...

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[–] Zachariah@lemmy.world 2 points 3 weeks ago (2 children)

Wouldn’t it just need to know which is the highest message number it has seen? And then don’t accept that one or any lower ever again?

If the count is within the encrypted message, no one can spoof anything higher.

[–] tapdattl@lemmy.world 2 points 3 weeks ago

Oh fair good point

[–] Rick_C137@programming.dev 1 points 2 weeks ago (1 children)

I don't think this work's if you have multiple remote pilot tough...

[–] Zachariah@lemmy.world 1 points 2 weeks ago

Each remote could have an ID number it sends.