Discussion: https://crypto.stackexchange.com/questions/9076/using-a-hash-as-a-secure-prng https://crypto.stackexchange.com/questions/9076/using-a-hash... & htt

Discussion: https://crypto.stackexchange.com/questions/9076/using-a-hash-as-a-secure-prng https://crypto.stackexchange.com/questions/9076/using-a-hash... & http://xoroshiro.di.unimi.it http://xoroshiro.di.unimi.it makes reference to how on x86 cpus with AES one could get a very fast prng similar to how you're implying As a change of 1 bit in an input ideally flips half the bits of the output for a cryptographic hash, this scheme should work See also https://en.wikipedia.org/wiki/Fortuna_(PRNG) https://en.wikipedia.org/wiki/Fortuna_(PRNG)