spec: define 'align' for publisher authority binding (§4.5.1) - #98
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September 23, 2026 16:45
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Fixes #94.
§4.5.1 requires the trust domain in
trustManifest.identityto "align" with the URN publisher domain but never defines the term, so registries can pick different readings (equality vs. subdomain).This uses the wording proposed in the issue: the trust domain aligns when it equals the publisher domain or is a subdomain of it (after case folding), and the publisher domain is not a public suffix; comparison is on A-labels. Adds a worked example (a SPIFFE ID under
prod.acme.comaligns withacme.com;acme.com.evil.exampleand aco.ukpublisher do not) and updates the D.2 constraint to point at the definition.Docs-only; no schema change.