I want to continuously increase /prco/sys/random/entropy_avail
when it reduced.
I first check the rngd
(https://wiki.archlinux.org/index.php/Rng-tools)
It says /dev/random
is very slow since it only collects entropy from device drivers and other (slow) sources and I think that is why we use rngd
.
And it says rngd
mainly uses hardware random number generators (TRNG), present in modern hardware like recent AMD/Intel processors, VIA Nano or even Raspberry Pi.
However, when I start rngd
it says
[root@localhost init.d]# rngd
can't open entropy source(tpm or intel/amd rng)
Maybe RNG device modules are not loaded
But I don't have Intel RDRAND
confirmed by cat /proc/cpuinfo | grep rdrand
:
[root@localhost init.d]# cat /proc/cpuinfo | grep rdrand | wc -l
0
If there is any possible resources that I can use?
Alternatively, is it possible making script to increase /proc/sys/random/entropy_avail
?
(212)