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by mnordhoff 3576 days ago
You realize modern Intel CPUs include a TRNG, with the RDRAND and RDSEED instructions, for no extra cost. Can't get cheaper than that, if you already have one.

https://en.wikipedia.org/wiki/RdRand

The potential of an NSA backdoor in it is a popular, and entirely possible, conspiracy theory, of course. You'd have to decide for yourself, and compare it to your trust in other options.