Implement policy-based runtime capsule issuance#1485
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WillEastbury wants to merge 2 commits intomainfrom
Open
Implement policy-based runtime capsule issuance#1485WillEastbury wants to merge 2 commits intomainfrom
WillEastbury wants to merge 2 commits intomainfrom
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Add GET /api/runtime/capsule/{nodeId} endpoint with multi-stage policy:
1. Identity verification: Bearer token auth + node existence check
2. Status check: reject revoked/disabled nodes
3. Fingerprint verification: compare device fingerprint header
4. Telemetry behaviour: detect abrupt stops (unclean shutdown + recent telemetry)
5. Network policy: risk scoring (IP +20, ASN +40, region +50, abrupt stop +80)
Nodes scoring >=80 auto-quarantined
6. HKDF key derivation: per-node runtime key from cluster master
7. Capsule envelope: capsuleId, runtimeKey, HMAC-SHA256 signature, 24h expiry
8. Node state update: IP/ASN/region/capsule timestamp persisted
Extended DeploymentNode with policy fields. Added capsule models.
Closes #1430
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
- Replace string.Equals with CryptographicOperations.FixedTimeEquals for bearer token validation (prevents timing side-channel) - Make WriteCapsuleDenied async and await all 7 call sites - Cache HKDF master key at startup instead of reading /etc/machine-id on every request (eliminates file I/O on hot path) Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
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Summary
Implements GET /api/runtime/capsule/{nodeId} — a policy-gated endpoint that controls whether a deployment node receives a runtime capsule (encryption key + signed envelope) needed to start BMW.
Policy Pipeline (8 stages)
Changes
Denial Responses
{"denied":true,"reason":"NODE_REVOKED"} {"denied":true,"reason":"NETWORK_POLICY_VIOLATION","riskScore":90}Closes #1430