Re: [PATCH 5/7] random: replace non-blocking pool with a Chacha20-based CRNG

[Stephan Mueller]

Am Montag, 20. Juni 2016, 11:01:47 schrieb Theodore Ts'o:

Hi Theodore,

> 
> So simply doing chacha20 encryption in a tight loop in the kernel
> might not be a good proxy for what would actually happen in real life
> when someone calls getrandom(2).  (Another good question to ask is
> when someone might be needing to generate millions of 256-bit session
> keys per second, when the D-H setup, even if you were using ECCDH,
> would be largely dominating the time for the connection setup anyway.)

Is speed everything we should care about? What about:

- offloading of crypto operation from the CPU

- potentially additional security features a hardware cipher may provide like 
cache coloring attack resistance?

Ciao
Stephan