3 ms·
I'm rural and have a lot of things sending data to a central node for collection. I found LoRa interesting, but sadly none of the modules offered native encrypt
by OrdaGarb 10y ago
I'm rural and have a lot of things sending data to a central node for collection. I found LoRa interesting, but sadly none of the modules offered native encryption capabilities. Ended up using RFM69HW modules with AES128 in the same band and still get pretty good range, up to a mile+ NLoS (but not through 300m hills either..)
I imagine the low throughput of LoRa would make encryption a greater challenge than with other modules, but maybe there are other reasons for that.
- paulgerhardt 10y agoSome of the modules have dedicated native encryption coprocessors such as the Laird RM186 - it's still easy enough to shoot your toe off though. I would argue there is negligible benefit for an encryption coprocessor (it's usually just AES ECB anyway) - you're either better off using a software implementation of ChaCha20/Poly1305 or a dedicated TPM.
- slewis 10y agoLoRaWAN requires AES128: https://www.lora-alliance.org/portals/0/documents/whitepapers/LoRaWAN101.pdf https://www.lora-alliance.org/portals/0/documents/whitepaper... The radio chip itself doesn't perform the encryption though, it's done on the host microcontroller. What kind of things are you monitoring?