If you really need so many cryptographic keys and won’t trust hardware then you have to build it yourself from commonly available parts and connect it to an off

If you really need so many cryptographic keys and won’t trust hardware then you have to build it yourself from commonly available parts and connect it to an offline raspberry pi to take out the automatically generated keys. An example on hand built entropy generator: https://github.com/nategri/chernobyl_dice https://github.com/nategri/chernobyl_dice You can do something like this for I guess 1000 dollars but it won’t be useable for real-time systems.