79b8e53441
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- Introduced `SbomService` tasks documentation. - Updated `StellaOps.sln` to include new projects: `StellaOps.AirGap.Time` and `StellaOps.AirGap.Importer`. - Added unit tests for `BundleImportPlanner`, `DsseVerifier`, `ImportValidator`, and other components in the `StellaOps.AirGap.Importer.Tests` namespace. - Implemented `InMemoryBundleRepositories` for testing bundle catalog and item repositories. - Created `MerkleRootCalculator`, `RootRotationPolicy`, and `TufMetadataValidator` tests. - Developed `StalenessCalculator` and `TimeAnchorLoader` tests in the `StellaOps.AirGap.Time.Tests` namespace. - Added `fetch-sbomservice-deps.sh` script for offline dependency fetching.
36 lines
2.2 KiB
Markdown
36 lines
2.2 KiB
Markdown
# AirGap Time Anchor Scaffold (prep for AIRGAP-TIME-57-001)
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## Scope for prep
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- Provide a deterministic parsing surface for signed time tokens (Roughtime, RFC3161) so staleness calculations and telemetry wiring can start without full crypto yet.
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## What landed (2025-11-20)
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- New project: `src/AirGap/StellaOps.AirGap.Time/StellaOps.AirGap.Time.csproj` (net10.0), BCL-only.
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- Model: `TimeAnchor` canonical record (anchor time, source, format, signature fingerprint placeholder, token digest).
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- Parser: `TimeTokenParser` with deterministic SHA-256 digest derivation and structured success/failure reasons.
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- Result envelope: `TimeAnchorValidationResult` and `TimeTokenFormat` enum.
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- Tests: `tests/AirGap/StellaOps.AirGap.Time.Tests` cover empty-token failure and digest production for Roughtime tokens.
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## Updates (2025-11-20)
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- Added staleness calculator (`StalenessCalculator`) and budgets/evaluation models to derive warning/breach states deterministically.
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- Added `TimeAnchorLoader` to ingest hex-encoded tokens from fixtures; sample tokens placed under `src/AirGap/StellaOps.AirGap.Time/fixtures/`.
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- Added `TimeStatusService` + `InMemoryTimeAnchorStore` for per-tenant anchor/budget status + staleness; tests in `TimeStatusServiceTests`.
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- Added verification pipeline (`TimeVerificationService`) with stub Roughtime/RFC3161 verifiers requiring trust roots; loader now verifies using trust roots.
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- Added API surface `/api/v1/time/status` (plus POST `/api/v1/time/anchor`) via `TimeStatusController` and web host wiring.
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## Next implementation hooks
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- Plug real Roughtime and RFC3161 decoders, verifying against trust roots supplied via sealed-mode config.
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- Persist `TimeAnchor` rows under controller/importer once schema is final; emit telemetry counters/alerts.
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- Replace placeholder signature fingerprint with actual signer fingerprint post-verification.
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## Determinism/air-gap posture
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- Parser avoids wall-clock; anchor time derived deterministically from token digest until real parser is wired.
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- No network calls; uses cached NuGet (`local-nugets/`) for tests.
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## How to consume
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```bash
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DOTNET_NOLOGO=1 dotnet test tests/AirGap/StellaOps.AirGap.Time.Tests/StellaOps.AirGap.Time.Tests.csproj --no-build
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```
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## Owners
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- AirGap Time Guild (per sprint 0510).
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