Re: [PATCH v1 4/7] random: ensure early RDSEED goes through mixer on init

[Eric Biggers]

On Tue, Feb 08, 2022 at 04:53:32PM +0100, Jason A. Donenfeld wrote:
> Continuing the reasoning of "random: use RDSEED instead of RDRAND in
> entropy extraction" from this series, at init time we also don't want to
> be xoring RDSEED directly into the crng. Instead it's safer to put it
> into our entropy collector and then re-extract it, so that it goes
> through a hash function with preimage resistance.
> 
> Cc: Theodore Ts'o <tytso@xxxxxxx>
> Cc: Dominik Brodowski <linux@xxxxxxxxxxxxxxxxxxxx>
> Signed-off-by: Jason A. Donenfeld <Jason@xxxxxxxxx>
> ---
>  drivers/char/random.c | 14 ++++----------
>  1 file changed, 4 insertions(+), 10 deletions(-)
> 

Looks good,

Reviewed-by: Eric Biggers <ebiggers@xxxxxxxxxx>

- Eric