Hi Brian, Thanks for keeping track, we have not forgotten.
-17, submitted just before the cut-off, did not cover all Last-Call comments so another update is planned soon, and that should fix #288 as well. Göran From: Sipos, Brian J. <[email protected]> Date: Thursday, 5 March 2026 at 15:07 To: [email protected] <[email protected]> Subject: [COSE] Re: [EXT] I-D Action: draft-ietf-cose-cbor-encoded-cert-17.txt Authors, I know that it is still a repo issue [1] but I'm relaying to the mailing list as a reminder: If full parity to X509 is desired in COSE, there should be "c5t-sender" "c5c-sender" "c5u-sender" equivalent alg-specific header parameters allocated by the C509 document. Without these, the ECDH-SS algorithms cannot refer to sender C509 certs. Thanks for consideration, Brian S. [1] https://eur02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgithub.com%2Fcose-wg%2FCBOR-certificates%2Fissues%2F288&data=05%7C02%7Cgoran.selander%40ericsson.com%7C648328e131604e8fba0208de7ac057e2%7C92e84cebfbfd47abbe52080c6b87953f%7C0%7C0%7C639083164489877497%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=MuMvY8DtQ%2BB1PFmDqRYyM6ZQRSDhEzcOryYZfL7Wdk8%3D&reserved=0<https://github.com/cose-wg/CBOR-certificates/issues/288> > -----Original Message----- > From: [email protected] <[email protected]> > Sent: Monday, March 2, 2026 5:08 PM > To: [email protected] > Cc: [email protected] > Subject: [EXT] [COSE] I-D Action: draft-ietf-cose-cbor-encoded-cert-17.txt > > APL external email warning: Verify sender [email protected] > before clicking links or attachments > > Internet-Draft draft-ietf-cose-cbor-encoded-cert-17.txt is now available. It > is > a work item of the CBOR Object Signing and Encryption (COSE) WG of the > IETF. > > Title: CBOR Encoded X.509 Certificates (C509 Certificates) > Authors: John Preuß Mattsson > Göran Selander > Shahid Raza > Joel Höglund > Martin Furuhed > Name: draft-ietf-cose-cbor-encoded-cert-17.txt > Pages: 88 > Dates: 2026-03-02 > > Abstract: > > This document specifies a CBOR encoding of X.509 certificates. The > resulting certificates are called C509 certificates. The CBOR > encoding supports a large subset of RFC 5280, common certificate > profiles and is extensible. > > Two types of C509 certificates are defined. One type is an > invertible CBOR re-encoding of DER-encoded X.509 certificates with > the signature field copied from the DER encoding. The other type is > identical except that the signature is over the CBOR encoding instead > of the DER encoding, avoiding the use of ASN.1. Both types of > certificates have the same semantics as X.509 and the same reduced > size compared to X.509. > > The document also specifies CBOR encoded data structures for > certificate (signing) requests and certificate request templates, new > COSE headers, as well as a TLS certificate type and a file format for > C509. This document updates RFC 6698; the TLSA selectors registry is > extended to include C509 certificates. > > The IETF datatracker status page for this Internet-Draft is: > https://eur02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fdatatracker.ietf.org%2Fdoc%2Fdraft-ietf-cose-cbor-encoded-cert%2F&data=05%7C02%7Cgoran.selander%40ericsson.com%7C648328e131604e8fba0208de7ac057e2%7C92e84cebfbfd47abbe52080c6b87953f%7C0%7C0%7C639083164489899683%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=p0afadwB9QojKamKYs7XQ%2FuJsDQtvDhWoys1gyjrX0A%3D&reserved=0<https://datatracker.ietf.org/doc/draft-ietf-cose-cbor-encoded-cert/> > > There is also an HTML version available at: > https://eur02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.ietf.org%2Farchive%2Fid%2Fdraft-ietf-cose-cbor-encoded-cert-17.html&data=05%7C02%7Cgoran.selander%40ericsson.com%7C648328e131604e8fba0208de7ac057e2%7C92e84cebfbfd47abbe52080c6b87953f%7C0%7C0%7C639083164489915633%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=vpSYGQmhvtrnpcWEEVMqdpp1SHuPQ9ZuY1WxYTmqhFU%3D&reserved=0<https://www.ietf.org/archive/id/draft-ietf-cose-cbor-encoded-cert-17.html> > > A diff from the previous version is available at: > https://eur02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fauthor-tools.ietf.org%2Fiddiff%3Furl2%3Ddraft-ietf-cose-cbor-encoded-cert-&data=05%7C02%7Cgoran.selander%40ericsson.com%7C648328e131604e8fba0208de7ac057e2%7C92e84cebfbfd47abbe52080c6b87953f%7C0%7C0%7C639083164489931096%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=JFUBVKe1TNBqeo8SrLWW0HfQzWaHn%2BBYc2yNwsSzOcE%3D&reserved=0<https://author-tools.ietf.org/iddiff?url2=draft-ietf-cose-cbor-encoded-cert-> > 17 > > Internet-Drafts are also available by rsync at: > rsync.ietf.org::internet-drafts > > > _______________________________________________ > COSE mailing list -- [email protected] > To unsubscribe send an email to [email protected]
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