Bob, is this about compressing the DTLS record layer or the DTLS handshake protocol? For the former, I wonder how much is there actually to compress (when using DTLS 1.3)?
From: TLS <tls-boun...@ietf.org> On Behalf Of Eric Rescorla Sent: Friday, May 27, 2022 5:30 PM To: Robert Moskowitz <rgm-...@htt-consult.com> Cc: <tls@ietf.org> <tls@ietf.org> Subject: Re: [TLS] SCHC for DTLS On Fri, May 27, 2022 at 6:27 AM Robert Moskowitz <rgm-...@htt-consult.com<mailto:rgm-...@htt-consult.com>> wrote: Is there any activity to define SCHC rules for DTLS? Not to my knowledge. -Ekr I want this for Unmanned Aircraft (UA) Network Remote ID (Net-RID) communications from the UA to the Net-RID Service Provider (SP). See https://datatracker.ietf.org/doc/draft-moskowitz-drip-secure-nrid-c2/ I am compressing ESP traffic using rfc 8750 and: https://datatracker.ietf.org/doc/draft-mglt-ipsecme-diet-esp/ SCHC is negotiated in IKE (and will be in HIP) and SA tables allow the ESP receiver to recognize a SCHC compressed ESP Header and act properly. It is not so simple with DTLS. First UDP is below DTLS, so how do you compress it? The way I see it, SCHC would need to be assigned an IP Protocol type so that the transport processing can start right up with the SCHC rule for UDP and then on to DTLS and then the cipher. Or at least how I see the challenge. So I am looking for any extant work on SCHC for DTLS and/or interest in this activity. The CoAP SCHC work, rfc 8824, dodge DTLS compression. Or that is how I read it. Thanks Bob _______________________________________________ TLS mailing list TLS@ietf.org<mailto:TLS@ietf.org> https://www.ietf.org/mailman/listinfo/tls IMPORTANT NOTICE: The contents of this email and any attachments are confidential and may also be privileged. If you are not the intended recipient, please notify the sender immediately and do not disclose the contents to any other person, use it for any purpose, or store or copy the information in any medium. Thank you.
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