nIt sounds so easy:
“Just pick some random bytes”
nNo good standard
source of computer randomness
nOS state
(time-of-day, PID) is very low entropy
nUser keyboard input
is very unreliable
nBest practical
options aren’t very good
nInter-event timing
(keyboard, network), timing loops, fast clocks
and interval timers
nBetter would be /dev/random, or hardware generator
nIntel
850 chipset (for Pentium motherboards) has on-board hardware RNG