Many contemporary computing platforms have some kind of HW RNG built into them, these are often regarded with some kind of skepticism as they are not really aud

Many contemporary computing platforms have some kind of HW RNG built into them, these are often regarded with some kind of skepticism as they are not really auditable. The larger issue is that these are not really needed, any device that does something useful (ie. interacts with the outside world) and retains some kind of non-volatile internal state is perfectly capable of generating cryptographic randomness purely in software.