Post
Topic
Board Development & Technical Discussion
Re: How can you verify the randomness that's coming from a hardware?
by
alexeyneu
on 09/11/2022, 15:17:18 UTC
we'll grab it as 23.548753℃ . what i offer is to use this 0.008753℃ . you can't predict it in any way . and you can't exploit it.
Just because a sensor outputs 6 decimals, doesn't mean it accurately measures them. The last 5 digits could just as well be made up, and thus be predictable.

if $6 chip claims it has this resolution means there's one that really has.

we'll grab it as 23.548753℃ . what i offer is to use this 0.008753℃ . you can't predict it in any way . and you can't exploit it.
Just because a sensor outputs 6 decimals, doesn't mean it accurately measures them. The last 5 digits could just as well be made up, and thus be predictable.
I believe the biggest issue with temperature is that it typically increases / decreases gradually; the sequence of numbers coming from the sensor is going to have some inherent bias because of this.
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this thing wraps back and forth like 8bit uint . it will do so with and without this gradually thing. it sould not have impact here but i can't say for sure without research