Re: [TLS] integrity only ciphersuites

Ted Lemon <mellon@fugue.com> Tue, 21 August 2018 16:13 UTC

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From: Ted Lemon <mellon@fugue.com>
Date: Tue, 21 Aug 2018 12:12:29 -0400
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To: "Fries, Steffen" <steffen.fries@siemens.com>
Cc: "Salz, Rich" <rsalz@akamai.com>, Andreas Walz <andreas.walz@hs-offenburg.de>, "tls@ietf.org" <tls@ietf.org>, "ncamwing=40cisco.com@dmarc.ietf.org" <ncamwing=40cisco.com@dmarc.ietf.org>
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Subject: Re: [TLS] integrity only ciphersuites
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This is a situation where there is a clear alternative: use IPsec.   IPsec
is ideal for the problem space you are in.   TLS is actually really not
ideal.   You are trying to cram a round peg into a square hole.

On Tue, Aug 21, 2018 at 12:00 PM, Fries, Steffen <steffen.fries@siemens.com>
wrote:

>
>
>
>
> Ø  If there would be support for integrity ciphers in TLS 1.3 it would
> enable the straight forward switch from TLS 1.2 also in these environments
> by keeping existing monitoring options.
>
>
>
> Why do you want to move to TLS 1.3?  Why isn’t your existing solution good
> enough?
>
> [stf] Currently it is sufficient to use TLS 1.2- For certain use cases the
> utilized components have a rather long lifetime. One assumption is that TLS
> 1.3 will exist longer that TLS 1.2 and that certain software tools (also
> browsers) may not support TLS 1.2 in the future (I know there is currently
> not intention for a deprecation of 1.2, but if a component is in the field
> for 20 years, it may become more likely). Having the option to also support
> TLS 1.3 on such devices now, may ensure that there are accessible by
> standard software also in the more distant future.
>
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