[fpc-pascal] quality of FPC random

Mark Morgan Lloyd markMLl.fpc-pascal at telemetry.co.uk
Fri Aug 14 16:38:34 CEST 2015

Michael Schnell wrote:
> On 08/14/2015 03:47 PM, Jonas Maebe wrote:
>>>   My question is: is FPC built-in PRNG good enough as comparing to 
>>> /dev/urandom?
>> No PRNG is suited for that purpose, because every PRNG is by 
>> definition predictable and you need unpredictable numbers for IVs.
> How should /dev/urandom not be predictable (as any software random 
> generator is)  ?

It seeds itself with "entropy" from the intervals between LAN packets, 
intervals between typed characters and so on.

> Decent Wifi hubs use hardware of some kind.

Noise diode, entropy as discussed above, etc. Or they've got broken 
security, which probably describes the majority.

Mark Morgan Lloyd
markMLl .AT. telemetry.co .DOT. uk

[Opinions above are the author's, not those of his employers or colleagues]

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