Re: [PATCH net-next] [RESEND] wireguard: disable in FIPS mode

On Wed, Apr 07, 2021 at 02:12:27PM -0700, Eric Biggers wrote:

On Wed, Apr 07, 2021 at 07:39:20PM +0800, Hangbin Liu wrote:

quoted

As the cryptos(BLAKE2S, Curve25519, CHACHA20POLY1305) in WireGuard are not
FIPS certified, the WireGuard module should be disabled in FIPS mode.

Signed-off-by: Hangbin Liu <redacted>

I think you mean "FIPS allowed", not "FIPS certified"?  Even if it used FIPS
allowed algorithms like AES, the Linux kernel doesn't come with any sort of FIPS
certification out of the box.

Yes, you are right.

Also, couldn't you just consider WireGuard to be outside your FIPS module
boundary, which would remove it from the scope of the certification?

And how do you handle all the other places in the kernel that use ChaCha20 and
SipHash?  For example, drivers/char/random.c?

Good question, I will check it and reply to you later.

Thanks
Hangbin