draft-hash-envelope-update#5
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…y, cnf) Why: align the architecture draft with the running demonstration and explain the two load-bearing properties. - Emblem is now a COSE hash envelope (draft-ietf-cose-hash-envelope): payload = hash of an external Resource; protected header carries 258/259/260, minimal CWT claims (RFC 9597, label 15) = sub + cnf, and a cnf key (RFC 8747). Media type application/digital-emblem+cose. - Delivery moved from a dedicated emblem.<fqdn> SVCB name to the asset's own HTTPS resource record (RRTYPE 65), key65280, beside ordinary params. - New section "Delivering the Entire Emblem over DNS": the whole emblem is in the DNS answer, so the protection decision needs no second, revealing fetch. - New section "Generic Discovery and Unobservability": the query that returns the emblem is the ordinary connection-setup query, so scanning for emblems does not reveal emblem-seeking intent to the infrastructure provider or an on-path observer; residual signals are called out. - New section "Proof of Possession": challenge/response against the cnf key. - Validation, marking/unmarking, requirements mapping, security, and IANA updated accordingly. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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Rewrites the architecture draft to match the running demo, and makes explicit the two properties requested.
258/259/260, minimal CWT claims (RFC 9597, label 15) =sub+cnf, and acnfkey (RFC 8747). Media typeapplication/digital-emblem+cose.emblem.<fqdn>SVCB name to the asset's own HTTPS record (RRTYPE 65),key65280.cnfkey.Builds clean locally: kramdown-rfc + xml2rfc (txt & html), all references resolved, no line >72 cols.
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