I use:
cat /proc/sys/kernel/random/entropy_avail
To check on the amount of entropy for creating random stuff like
keypairs with openssl or random nonces and keys for TLS..
I am using a Cubieboad2.
With Fedora-Xfce-armhfp-26-1.5-sda.raw.xz I was seeing numbers in the
3,000. I don't have that image running right now to get an actual number.
I just built a system with: Fedora-Server-armhfp-26-1.5-sda.raw.xz
I am seeing numbers only in the mid 800s:
[root@C2 ~]# cat /proc/sys/kernel/random/entropy_avail
866
[root@C2 ~]# cat /proc/sys/kernel/random/entropy_avail
803
[root@C2 ~]# cat /proc/sys/kernel/random/entropy_avail
828
What is different between these two images? It is the same Cubieboard.
I have had to install haveged on my Centos7-arm images to get decent
entropy.
I have also installed rng-tools with some success, but not as much as
haveged.
thanks
Bob
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