Re: systemctl restart sddm
On Wednesday, August 1, 2018 6:10:56 PM CEST you wrote:
> Looking at: [1](https://wiki.archlinux.org/index.php/Rng-tools), and then
> following to: [2](https://en.wikipedia.org/wiki/
> Hardware_random_number_generator), one can think that rng-tools uses: [3]
> (https://en.wikipedia.org/wiki/RdRand).
>
> But it might not be so, since [2] says: "The RdRand opcode will return
> values from an onboard hardware random number generator. It is present in
> Intel Ivy Bridge processors and AMD64 processors since 2015", and IvyBridge
> started in 2012, and rng-tools code is very, very old (but there is some
> overlapping time, possibly).
>
> Therefore believing that rng-tools uses RdRand's CPU hardware random
> generator instruction, might be pure misconception.
>
> Consequently, haveged seeming much newer and maintained, it is in my opinion
> the best choice.
It seems the overlapping time was sufficient to "Add RDRAND support" to
rng-tools: (debian's rng-tools5)
[4](https://git.kernel.org/pub/scm/utils/kernel/rng-tools/rng-tools.git/log/?qt=grep&q=rdrand)
"Add RDRAND support" (2012-07-31)
[5](https://git.kernel.org/pub/scm/utils/kernel/rng-tools/rng-tools.git/commit/?id=2a01453686f065ac95916fe49a02407914e05dd4)
Next, is the redhat version:
[6](https://github.com/nhorman/rng-tools/search?q=rdrand&unscoped_q=rdrand)
debian's "rng-tools" (unofficial), seems to be to old, viz. anterior to 2012's IvyBridge, to use RdRand instruction:
[7](https://tracker.debian.org/pkg/rng-tools)
(last news, as of today, is from 2011-11-10)
>
> Thanks
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