Generating Unique Keys
grante at visi.com
Wed Jan 29 17:19:53 CET 2003
In article <mailman.1043853713.17341.python-list at python.org>, Nagy László wrote:
>>Sorry to be off topic, but why especially? At least on Linux,
>>/dev/random is determined by various hardware factors chosen for the
>>difficulty to guess them (i.e. the float between keyboard controller
>>clock and the CPU clock generator) and then passed through a one way
>>hash function. =20
> Isn't it used for initializing only?
No. Reading /dev/random returns random bits from an entropy
"pool" generated by various HW events. When the pool runs out,
the read will block until more "randomness" happens -- which
can be rather inconvenient when you're running a simulation or
test that's using lots of random values.
Grant Edwards grante Yow! Finally, Zippy
at drives his 1958 RAMBLER
visi.com METROPOLITAN into the
faculty dining room.
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