Generally speaking, a lot of proposed sources of "randomness" may not be as random as people think. And off-the-shelf hardware may be compromised/influenced by governemnts (see the NSA-NIST scandal).
For safe communication (one-time pad), you need plenty of truly random numbers, not pseudo-random ones.
It would therefore be good to have an open source source of entropy as a USB device, e.g. based on radioactive decay of some harmless but unstable isotope. There are companies offering such devices, but again I would not trust any of them but prefer people build their own from open hardware specs (it is likely that these vendors are infiltrated by intelligence agencies the same way as Swiss-based Crypto AG was - https://en.wikipedia.org/wiki/Crypto_AG).
KMag
Radioactive decay isn't the only source of quantum noise. Johnson-Nyquist kTC noise on a capacitor is another quantum source of noise, for instance.
Generally speaking, a lot of proposed sources of "randomness" may not be as random as people think. And off-the-shelf hardware may be compromised/influenced by governemnts (see the NSA-NIST scandal).
For safe communication (one-time pad), you need plenty of truly random numbers, not pseudo-random ones.
It would therefore be good to have an open source source of entropy as a USB device, e.g. based on radioactive decay of some harmless but unstable isotope. There are companies offering such devices, but again I would not trust any of them but prefer people build their own from open hardware specs (it is likely that these vendors are infiltrated by intelligence agencies the same way as Swiss-based Crypto AG was - https://en.wikipedia.org/wiki/Crypto_AG).