4 ms·
Would that be cryptographically secure? Couldn't someone perturb an RNG based on background radiation by beaming radiation at it?
by AlexCoventry 5y ago
Would that be cryptographically secure? Couldn't someone perturb an RNG based on background radiation by beaming radiation at it?
- ars 5y agoThat shouldn't change anything: https://en.wikipedia.org/wiki/Fair_coin#Fair_results_from_a_biased_coin https://en.wikipedia.org/wiki/Fair_coin#Fair_results_from_a_...
- AlexCoventry 5y agoThat argument relies on independent samples, but if someone's beaming radiation at the device to control its output, the samples will not be independent.
- ars 5y agoIt's not that easy to control radiation, controlling it to the level of individual decays is not possible. The closest you can get is bring it closer/further, or shield/unshield.
- AlexCoventry 5y agoI'd rather use a local source in a Faraday cage, so that it's not possible for someone to influence the output at all.
- ars 5y agoA Faraday cage is not going to block this type of radiation.
- gabrielblack 5y agoTo test, I made a simple script generating the dispersion graph: the numbers seem to be of good quality