If you are interested in subject of high quality random sources, you may find this useful: there exists a project named League of Entropy [1] dedicated to relia

If you are interested in subject of high quality random sources, you may find this useful: there exists a project named League of Entropy [1] dedicated to reliable generation of public randomness based on group of servers with high-quality random sources (like lava lamps or seismic activity). These distributed randomness beacon servers can also provide private random data. There exists a project with daemon [2] which collects entropy from distinct sources and produces secure output, which can be used to reseed Linux /dev/random and /dev/urandom. It may be useful for devices without reliable HW RNG. [1] - https://www.cloudflare.com/leagueofentropy/ https://www.cloudflare.com/leagueofentropy/ [2] - https://github.com/Snawoot/drb-client https://github.com/Snawoot/drb-client