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Record parent-process Firefox trust host

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Sergey Chernov 2026-08-17 18:22:03 +04:00
parent c35e405248
commit 77a9bf0759
2 changed files with 26 additions and 0 deletions
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17
FIREFOX_INTEGRATION.md
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@ -25,6 +25,23 @@ certificate-error document. It does not yet provide the richer immutable
`TlsFacts`, append-only journal, plugin chain, policy broker, or fresh retry
required by the architecture below.
The following commit `e4623c33b3` (*Connect certificate investigation to parent
trust host*) establishes the first real process boundary. A built-in
`BrowsecTrustHost.sys.mjs` runs in the Firefox parent process through the
`NetErrorParent` actor. It validates bounded DER input, computes fingerprints,
normalizes a Trust API 0.1 failure record, attributes evidence to the Firefox
TLS adapter, and invokes the irremovable fail-closed final handler. The content
page now only requests evaluation and renders the returned facts, journal, and
Boolean verdict. Its browser test passes 11/11 assertions.
This is a host integration slice, not yet the complete TrustLab runner. It has
one evidence adapter and the built-in final handler; package discovery,
capability grants, ordered third-party plugins, deadlines, and interactive
decisions remain to be ported. The input also still travels from trusted
`about:certerror` to the parent actor. It becomes authoritative only when the
native PSM continuation freezes and registers the observation before any page
is created.
## Pinned reconnaissance baseline
The first source inspection uses an adjacent, shallow Firefox checkout:

9
SESSION_NOTES.md
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@ -374,3 +374,12 @@ Do not implement distributed trust next. Continue from the Firefox host seam:
test. The test passes 7/7 assertions. The surface exposes protected Firefox
failure facts and DER-derived SHA-256 fingerprints but intentionally cannot
alter trust yet.
- Firefox commit `e4623c33b3` adds the first parent-process Trust API 0.1 host.
`about:certerror` sends its provisional observation through an explicitly
allowlisted query; the parent validates bounded DER, computes fingerprints,
creates normalized facts, appends attributed adapter evidence, and executes
the built-in fail-closed final handler. The page renders the returned record
and append-only journal. Its expanded browser test passes 11/11 assertions.
- This is not yet the complete TrustLab runner or an authoritative native PSM
observation. Ordered third-party packages, capabilities, timeouts,
interactive decisions, durable policy, and fresh retry remain next.