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

Michael Thomas <mike@mtcc.com> Sun, 07 June 2020 21:16 UTC

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Subject: Re: The TCP and UDP checksum algorithm may soon need updating
To: ietf@ietf.org
References: <28A2725D-00F8-4739-8A73-ED176F8EF561@strayalpha.com> <3AA98081-A70E-4076-8096-79FFAEE8A738@huitema.net>
From: Michael Thomas <mike@mtcc.com>
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Date: Sun, 7 Jun 2020 14:16:18 -0700
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On 6/7/20 12:39 PM, Christian Huitema wrote:
>> On Jun 7, 2020, at 12:08 PM, Joseph Touch <touch@strayalpha.com> wrote:
>>
>> Overall, I’d feel a lot better about upending transport checksums if we had evidence that the checksum wasn’t catching errors. If the checksum is correct because it’s being constantly recomputed without being checked, a new alg won’t fix the issue.
> Or, use a keyed cryptographic checksum and do not give the key to middleboxes.
>
I've always had an unease about transport layer security vs transport 
IPsec. At least I now have something to hang my hat on.

Mike