| Date | Sun, 20 Feb 2022 19:40:17 -0800 | From | Eric Biggers <> | Subject | Re: [PATCH v2 8/9] random: use hash function for crng_slow_load() |
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On Wed, Feb 09, 2022 at 02:19:18AM +0100, Jason A. Donenfeld wrote: > Since we have a hash function that's really fast, and the goal of > crng_slow_load() is reportedly to "touch all of the crng's state", we > can just hash the old state together with the new state and call it a > day. This way we dont need to reason about another LFSR or worry about > various attacks there. This code is only ever used at early boot and > then never again. > > Cc: Theodore Ts'o <tytso@mit.edu> > Cc: Dominik Brodowski <linux@dominikbrodowski.net> > Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com> > --- > drivers/char/random.c | 42 +++++++++++++++--------------------------- > 1 file changed, 15 insertions(+), 27 deletions(-)
Reviewed-by: Eric Biggers <ebiggers@google.com>
- Eric
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