4 ms·
Nope. Johnson noise is quantum mechanical (at least in significant part). If you use a good algorithm, you can sample a partial TRNG into an epsilon-perfect TRN
by darkmighty 8y ago
Nope. Johnson noise is quantum mechanical (at least in significant part). If you use a good algorithm, you can sample a partial TRNG into an epsilon-perfect TRNG (as close as you'd like). Not to mention all of this is pointless since even if the noise were classical a few applications of strong hash functions (which is the normal procedure -- they're entirely practical) require would require computers using more energy than the entire universe has available you want.
- asafira 8y agoI definitely appreciate now that there are good algorithms to make your random bits more random, and hash functions can help, but regarding calling johnson noise quantum mechanical: can you give one reference of a description of finite-temperature johnson noise in which at least 1 observable necessitates a quantum mechanical treatment? (I don't think it exists, given that it is a thermal phenomenon, but maybe I'm wrong...)