3 ms·

There is the wall of lava lamps approach too: https://blog.cloudflare.com/lavarand-in-production-the-nitty-gritty-technical-details https://blog.cloudflare.com/

• jmalicki 3y ago
  You're of course unlikely to get the same read, but I find it crazy that their source of cryptographic entropy is on public display from the street!
  • kragen 3y ago
    agreed, it means the fluid-dynamics chaos in the lava lamps is useless for their cryptographic purposes
    • xeyownt 3y ago
      Not really. You can combine the public random source with a secret key. Since you assume they can keep secret a random source, they can equally keep this key secret. In fact, it's sometimes preferable to get rid of hardware source completely and only rely on a secret key and a state, and obtain a design that is more resistant to fault.