Re: [kernel-hardening] Re: [PATCH v7 3/6] random: use SipHash in place of MD5

[Jason A. Donenfeld]

On Thu, Dec 22, 2016 at 4:05 PM, Hannes Frederic Sowa
<hannes@xxxxxxxxxxxxxxxxxxx> wrote:
> This change would need a new version of the ext4 super block, because
> you should not change existing file systems.

Right.

As a first step, I'm considering adding a patch to move halfmd4.c
inside the ext4 domain, or at the very least, simply remove it from
linux/cryptohash.h. That'll then leave the handful of bizarre sha1
usages to consider.