Re: The TCP and UDP checksum algorithm may soon need updating

John C Klensin <john-ietf@jck.com> Mon, 08 June 2020 19:08 UTC

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Date: Mon, 08 Jun 2020 15:07:05 -0400
From: John C Klensin <john-ietf@jck.com>
To: Carsten Bormann <cabo@tzi.org>, Nick Hilliard <nick@foobar.org>
cc: ietf@ietf.org
Subject: Re: The TCP and UDP checksum algorithm may soon need updating
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--On Monday, June 8, 2020 20:39 +0200 Carsten Bormann
<cabo@tzi.org> wrote:

>...
> We now have the opportunity to make pervasive use of security;
> nobody knows how long that window of opportunity will stay
> open.  Instead of working on changing checksums, we should go
> for it.

<mini-rant>
While you are going for it just be sure that if the window
closes again, and closes sufficiently hard in some places to ban
the use of encrypted message flows entirely, the community is
not faced with a choice among no Internet, a highly fractionated
Internet with no communications between "crypto ok" and "crypto
prohibited" countries, or trying to limp along using protocols
that are known to be defective because we decided to ignore the
problems with them in favor of putting all of our proverbial
eggs in the pervasive security and encryption basket.
</mini-rant>

    john