2 Commits

Author	SHA1	Message	Date
BCC Fix Agent	82483e693d	fix(catalog-console): close the vacuous review gate; split catalog/release signing keys ... Fixes #68 findings 1 and 5. Finding 1 -- the review gate signed without reviewing anything: - ReviewWindow._on_sign hardcoded "main" as the TOCTOU comparison ref, so any PR review (where _on_load pins the PR head's blob SHA) could never sign; the only working path was main-vs-itself, whose empty diff made can_sign() vacuously True (set() <= set()). Commit b08cf21 signed 19 entries through exactly that path with zero of them reviewed. - can_sign() now refuses an empty changeset outright, and itself checks has_blocking_risk() across every changed entry rather than trusting the GUI to have disabled a checkbox. - ReviewSession now carries loaded_ref (the exact ref reviewed); a new pure sign_precondition(session, resolve_blob_sha) resolves the TOCTOU SHA from that ref, never a hardcoded "main". _on_load's retry path re-diffs instead of re-pinning the same stale SHA, so a blob-mismatch refusal can't loop forever. - source="main" now diffs against the last catalog a maintainer actually SIGNED (walking catalog.json's git history until a version verifies against the current .sig), not against itself. - Replaced the theatre-only test_no_acknowledge_all_function_exists (only asserted no function was *named* acknowledge_all) with a test that also exercises the real gate. Added can_sign/sign_precondition coverage for the empty-diff, blocking-risk, and ref-resolution seams -- each verified to fail when its guard is removed. Finding 5 -- the catalog key and release key were the same CI-resident key: - scripts/sign_checksums.py gets its own RELEASE_PUBKEYS (separate from bcc_core.CATALOG_PUBKEYS) and a verify_checksums_against_any() helper. - release.yml's signing-smoke-test now verifies RELEASE_SIGNING_KEY against RELEASE_PUBKEYS only -- it no longer imports bcc_core/CATALOG_PUBKEYS at all, so this workflow can never compare a CI secret against the catalog's root of trust. - catalog_console.py: keygen/show-seed-b64 gain --release, with separate keychain/file storage per key kind. show-seed-b64 refuses to run without --release, so the catalog seed can't be exported to a CI secret by habit. - README documents both keys' trust properties and the asymmetry: a CI compromise burns the release key, never the catalog key. The maintainer must rotate the catalog key (it was CI-resident, so treat it as burned for catalog use) and generate a fresh release key -- see the PR description for the exact steps. No key is generated or committed here.	2026-07-12 21:25:34 -04:00
BCC Agent	cd38fd0c78	Sign release checksums with Ed25519 (#63) ... Publish SHA256SUMS for every release archive and sign it with a detached Ed25519 signature (SHA256SUMS.sig), since paid code signing (macOS Developer ID, Windows Authenticode) and Sigstore keyless (needs a Fulcio-trusted OIDC issuer; self-hosted Gitea isn't one) are both out of budget/scope. - scripts/sign_checksums.py: dependency-light (cryptography only) helper to hash a directory of files into a sha256sum(1)-compatible SHA256SUMS manifest, sign it (domain-separated: b"bcc-release-v1|" + raw manifest bytes), and verify a signature. CLI has generate/ sign/verify subcommands; verify doubles as the check path. - tests/test_checksums.py: 15 unit + CLI-subprocess tests covering hashing, manifest formatting, sign/verify roundtrip, tamper detection, wrong-key rejection, domain-separation, and the no-key-provided failure path (must error, never write an empty/ bogus .sig). - .github/workflows/release.yml: Publish Release job now checks out the repo, flattens build artifacts, generates SHA256SUMS, and signs it from the RELEASE_SIGNING_KEY secret (base64 raw Ed25519 seed) if present. If the secret is absent, the release still publishes with a loud ::warning:: and no .sig — it never fails the release or publishes a bogus signature. - README.md: new 'Verifying your download' section with the (still placeholder) public key, sha256sum -c / Get-FileHash commands, and an explicit statement that this does not remove Gatekeeper/ SmartScreen warnings. - requirements-dev.txt / ci.yml: add cryptography as a dev/test dependency for the new script and its tests. Touches no files from bcc_core.py / tests/test_core.py / pyproject.toml / bcc.spec to avoid colliding with concurrent work on those files.	2026-07-12 17:30:09 -04:00