Re: [dtn] Benjamin Kaduk's Discuss on draft-ietf-dtn-tcpclv4-18: (with DISCUSS and COMMENT)

"R. Atkinson" <> Tue, 27 October 2020 14:52 UTC

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From: "R. Atkinson" <>
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Date: Tue, 27 Oct 2020 10:52:33 -0400
Cc: Benjamin Kaduk <>
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Subject: Re: [dtn] Benjamin Kaduk's Discuss on draft-ietf-dtn-tcpclv4-18: (with DISCUSS and COMMENT)
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> On Oct 26, 2020, at 23:49, Brian Sipos <> wrote:
> For my own purposes and for public network use TLS would be expected, so I don't have a full idea of when TLS would be desirable to negotiate away.

A trivial example — which I stress is purely hypothetical:

	DTN could be used to communicate between a military ground station
	and some military satellite in some orbit.  In this case, very probably there
	would be a military-grade link encryptor installed on both ends and ALL
	communications over the RF link would have military-grade encryption.

	In that case, TLS probably could not improve security and it ought to
	prevent link-layer data compression from working as intended (since 
	any encrypted data blob ought not be compressible from first principles 
	of Information Theory).