Getting linux to buffer /dev/random -

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i need reasonable supply of high-quality random data application i'm writing. linux provides /dev/random file purpose ideal; however, because server single-service virtual machine, has limited sources of entropy, meaning /dev/random becomes exhausted.

i've noticed if read /dev/random, 16 or random bytes before device blocks while waits more entropy:

[duke@poopz ~]# hexdump /dev/random 0000000 f4d3 8e1e 447a e0e3 d937 a595 1df9 d6c5 <process blocks...>

if terminate process, go away hour , repeat command, again 16 or bytes of random data produced.

however - if instead leave command running same amount of time, much, more random data collected. assume on course of given timeperiod, system produces plenty of entropy, linux utilises if reading /dev/random, , discards if not. if case, question is:

is possible configure linux buffer /dev/random reading yields larger bursts of high-quality random data?

it wouldn't difficult me buffer /dev/random part of program feel doing @ system level more elegant. wonder if having linux buffer random data in memory have security implications.

sounds need entropy deamon feeds entropy pool other sources.


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