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If you have low power devices with basically no external input but a build in clock and a network interface that receives one packet every few minutes (often it
by foepys 9y ago
If you have low power devices with basically no external input but a build in clock and a network interface that receives one packet every few minutes (often it even only sends data!), how do you create cryptographically secure random numbers for your encryption?
- HankB99 9y agoNoise. Most - if not all - of these chips have analog to digital convertors because most of the applications involve monitoring some sort of signal. There's going to at least a bit or two of noise in the signal (or if not otherwise used, a floating input.) That's where I'd start if I was looking for entropy.
- boznz 9y agoSame "noise" has to be at receiving crypto otherwise no key to decode it.
- Ar-Curunir 9y agoThat's... not how modern crypto works.