Re: [PATCH v4] security/keys: rewrite all of big_key crypto

From: Stephan Mueller
Date: Mon Sep 18 2017 - 04:50:06 EST

Am Samstag, 16. September 2017, 15:00:34 CEST schrieb Jason A. Donenfeld:

Hi Jason,

> This started out as just replacing the use of crypto/rng with
> get_random_bytes_wait,

This change is a challenge. The use of the kernel crypto API's DRNG has been
made to allow FIPS 140-2 compliance. Otherwise, the entire key generation
logic will not be using the right(TM) DRNG. Thus, I would not suggest to
replace that for a stable tree.

Note, I am currently working on a pluggable DRNG apporach for /dev/random and
/dev/urandom to be able to get rid of the use of the kernel crypto API's DRNG
API. It is ready and I will air that solution shortly. Yet, it needs work to
be integrated upstream (and approval from Ted Tso).