docs: say what the gateway measures, and when - #664
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Signed-off-by: Imran Siddique <imran.siddique@opaque.co>
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September 18, 2026 18:05
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The README (lines 49, 106, 276) and docs/SPEC.md line 83 say the policy bundle hash is measured into the attestation report "before any code runs". That is not what the runtime does, and a reader who checks
startup.pywill find so.Step 3b of startup measures installed code, the policy bundle and config before the gateway serves traffic (
tee/measurement.py,gateway_measurement). On sev-snp, azure-cvm-sev-snp and tdx the digest goes intoreport_data(tee/report_binding.py,MEASUREMENT_BOUND_PROVIDERS); on the TPM tier it is extended into a certified NV index.refresh_measurement_bindingre-attests on every bundle reload.This changes the four sentences to say that. The real guarantee is stronger than the old wording: it covers code and config as well as policy, and it survives a reload. Docs only, no behaviour change.
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