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1.1 KiB
1.1 KiB
Portable Evidence Bundles (DOCS-AIRGAP-58-004)
Guidance for exporting/importing portable evidence bundles across enclaves.
Bundle contents
- Evidence payloads (VEX observations/linksets) as NDJSON.
- Timeline events and attestation DSSE envelopes.
- Manifest with
bundleId,source,tenant,createdAt,files[],dsseEnvelopeHash(optional).
Export
- Produce from Evidence Locker/Excititor with deterministic ordering and SHA-256 hashes.
- Include Merkle root over evidence files; store in manifest.
- Sign manifest (DSSE) when trust roots available.
Import
- Verify manifest hash, Merkle root, and DSSE signature offline.
- Enforce tenant scoping; refuse cross-tenant bundles.
- Emit timeline event upon successful import.
Constraints
- No external lookups; verification uses bundled roots.
- Max size per bundle configurable; default 500 MB.
- Keep file paths UTF-8 and slash-separated; avoid host-specific metadata.
Determinism
- Sort files lexicographically; use ISO-8601 UTC timestamps.
- Avoid re-compressing files; if tar is used, set deterministic headers (uid/gid=0, mtime=0).