Re: kaslr: better rng

[Thor Lancelot Simon <tls%panix.com@localhost>]

On Mon, Nov 06, 2017 at 07:30:35AM +0100, Maxime Villard wrote:
> I'm in a point where I need to have a better rng before continuing - and an
> rng that can be used in the bootloader, in the prekern and in the kernel
> (early).
> 
> I would like to use a system similar to the /var/db/entropy-file implementation.
> That is to say, when running the system generates /var/db/random-file, which
> would contain at least 256bytes of random data. When booting the bootloader
> reads this file, can use some of its bytes to get random values. It then gives
> the file to the prekern which will use some other parts of it. The prekern
> finally gives the file to the kernel which can use the rest.

What is the reason for using only part of the file, in any application?

Thor