[dm-devel] [PATCH v2] hex2bin: make the function hex_to_bin constant-time

[Jason A. Donenfeld]

On Wed, May 4, 2022 at 11:47 AM Milan Broz <gmazyland at gmail.com> wrote:
> BTW we use exactly the same code from Mikulas in cryptsetup now (actually the report
> was initiated from here :) and I added some tests for this code,
> you can probably adapt it (we just use generic wrapper around it):

I use something pretty similar in wireguard-tools:
https://git.zx2c4.com/wireguard-tools/tree/src/encoding.c#n74

The code is fine. This is looking like a different issue somewhere
else in the OpenRISC stack...