[Cryptography] Generate Random Data From Sound Card

[David Kane-Parry]

On 4 Mar 2026, at 23:37, Jon Callas <jon at callas.org> wrote:
> On Mar 3, 2026, at 15:54, Byrl Raze Buckbriar via cryptography <cryptography at metzdowd.com> wrote:
>> Try one command to convert the sound card into a TRNG.
>> 
>> It should work with the audio muted.
> 
> That's really cool! Same principle as the camera with a lens cap on. Ambient hiss is another source for free. Thanks for pointing that out, it's another arrow in the quiver of combating  the Quantum Credulity Effect, that the very word "quantum" sucks people's brains out and leaves them incapable of thought.

There's also, for example, the thermal noise that Intel uses as a part of RDRAND.

- d.