> On Sat, Apr 04, 2026 at 12:37:52AM -0700, Rick Macklem wrote:
For this the RTC chip was invented and connected to a battery.
I'm also guessing that you don't need "universally unique in time" but
"different from the last boot".
I once used the information available in a system as to whether this was
a warn or cold boot (not all systems have that but we did) along with
low bits from the microseconds from the counter timer.. as soon as
reality strikes that tends to become pseudorandom pretty quickly. you'll
need a different one for each architecture to I like the suggestion to
use the entropy collection where you can piggyback on other people's work.
julian
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