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Re: [TLS] EXTERNAL: Re: integrity only ciphersuites

Peter Gutmann <pgut001@cs.auckland.ac.nz> Tue, 21 August 2018 04:20 UTC

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From: Peter Gutmann <pgut001@cs.auckland.ac.nz>
To: Lyndon Nerenberg <lyndon@orthanc.ca>, "tls@ietf.org" <tls@ietf.org>
Thread-Topic: [TLS] EXTERNAL: Re: integrity only ciphersuites
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Date: Tue, 21 Aug 2018 04:20:17 +0000
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Subject: Re: [TLS] EXTERNAL: Re: integrity only ciphersuites
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Lyndon Nerenberg <lyndon@orthanc.ca> writes:

>By law, we are forbidden from transmitting encrypted traffic, yet there are
>use cases where integrity protection in the absence of data content
>protection would be of benefit.

I've worked a lot with a set of authentication-only channels that can't be
encrypted but need strong integrity/authenticity protection.  The way to deal
with this is signed/MAC'd messages, not NULL-cipher TLS.

Peter.

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