Exports can now carry a detached ECDSA P-256 signature over the exact
manifest.json bytes in a new optional manifest.sig zip entry. The manifest
already pins the content hash, so a verified signature covers the whole
bundle, including the plaintext source environment the confirm step relies
on. Off by default (ScadaBridge:Transport:Signing): with the defaults,
exports are unsigned and imports accept signed and unsigned bundles.
- The bundle format does not change: bundleFormatVersion stays 1,
manifest.json and the AES-GCM associated data are untouched, and older
importers open entries by name and ignore manifest.sig. Three entries fit
within the default MaxBundleEntryCount of 4.
- Import policy runs after the content-hash check and before any passphrase
work. A signature that fails to verify against a trusted key is always
refused. RequireSignedBundles additionally refuses unsigned bundles and
bundles signed by an untrusted key. A refusal is BundleSignatureException
(Commons), shown on the UI upload step and on CLI preview/import.
- The signature status, key id and signer are recorded on BundleSession and
shown in the import wizard. They are also returned on PreviewBundleResult
and recorded on the BundleImported audit row. BundleExported records
Signed/SigningKeyId.
- Key material is pluggable. IBundleSigningKeySource and IBundleTrustStore
are TryAdd'd; the defaults read Signing:PrivateKey (meant to be a
${secret:} reference) and Signing:TrustedKeys. Key ids are SPKI
fingerprints. Startup validation rejects unparseable or non-P-256 keys.
- Compatibility proof: the checked-in fixtures pre-signing-plaintext and
pre-signing-encrypted were exported by origin/main 3ff463b6, before this
change, and are imported end to end with signing off and with signing
configured.
The design leaves key-per-env vs per-org, trust distribution and rotation,
and the production default for RequireSignedBundles open. These are listed
in Component-Transport.md.
Claude-Session: https://claude.ai/code/session_01GT67AEHd2Acv1YPwGfXEoV
Enables transitive pinning so the central SQLitePCLRaw.lib.e_sqlite3 2.1.12
pin applies everywhere (41 projects verified at 2.1.12). Required raising the
central floors: Newtonsoft.Json 13.0.4 and Microsoft.Extensions.* 10.0.13.
Claude-Session: https://claude.ai/code/session_01GT67AEHd2Acv1YPwGfXEoV
The NuGetAuditSuppress in Directory.Packages.props was masking a LIVE high-severity
vulnerability, not documenting an accepted one. Only the Host project resolved a
patched SQLitePCLRaw.lib.e_sqlite3 2.1.12 (transitively, via ZB.MOM.WW.Auth.ApiKeys).
Every other SQLite consumer - AuditLog, SiteRuntime, StoreAndForward, SiteEventLogging
and 11 test projects - still resolved the vulnerable 2.1.11.
The suppression's rationale was factually wrong: it claimed 'the only patched native
lib is the SQLitePCLRaw 3.x line'. 2.1.12 patches this advisory within the 2.1.x line,
so the feared risky force-override of the whole family to 3.x is unnecessary.
Fix: explicit PackageReference to the patched 2.1.12 in each SQLite-consuming project,
plus the central PackageVersion row. Suppression removed, so the advisory is audited
again rather than silenced.
Rejected alternative: CentralPackageTransitivePinningEnabled. It clears the advisory in
one line but makes every central version a ceiling for transitive resolution, demanding
bumps to Google.Protobuf, Grpc.Net.Client, Microsoft.Data.SqlClient and Newtonsoft.Json.
That is a gRPC/data-access change to a production SCADA platform and deserves its own
reviewed commit.
Verified: forced full-solution restore reports no NU1903 (only the pre-existing,
unrelated AngleSharp NU1902 in CentralUI.Tests); all four previously-vulnerable src
projects now resolve 2.1.12; 55 projects build 0 warnings / 0 errors; 1108 tests pass
across the SQLite layer (AuditLog 354, ConfigurationDatabase 357, Security 181,
StoreAndForward 152, SiteEventLogging 64).
Joseph Doherty