51 lines
2.0 KiB
Markdown
51 lines
2.0 KiB
Markdown
# DSSE/TUF profile for Mirror thin bundles (v1 draft)
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Applies to `mirror-thin-v1.*` artefacts in `out/mirror/thin/`.
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## Keys
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- Signing algorithm: ed25519
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- Key IDs: `mirror-ed25519-test-1`
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- Storage: keep private key only in sealed CI secret; public key published alongside metadata at `out/mirror/thin/tuf/keys/mirror-ed25519-test-1.pub`.
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## DSSE envelope
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- Payload type: `application/vnd.stellaops.mirror.manifest+json`
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- Payload: `mirror-thin-v1.manifest.json`
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- Signature: ed25519 over base64url(payload)
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- Envelope path: `out/mirror/thin/mirror-thin-v1.manifest.dsse.json`
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## TUF metadata layout
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```
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out/mirror/thin/tuf/
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root.json
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snapshot.json
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targets.json
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timestamp.json
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keys/mirror-ed25519-test-1.pub
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```
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### Targets mapping
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- `mirror-thin-v1.tar.gz` → targets entry with sha256 `210dc49e8d3e25509298770a94da277aa2c9d4c387d3c24505a61fe1d7695a49`
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- `mirror-thin-v1.manifest.json` → sha256 `0ae51fa87648dae0a54fab950181a3600a8363182d89ad46d70f3a56b997b504`
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### Determinism rules
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- Sort keys in JSON; indent=2; trailing newline.
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- `expires` set to `2026-01-01T00:00:00Z` for draft; update during release.
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- Versions: root=1, targets=1, snapshot=1, timestamp=1 for this draft.
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- Signatures should be stable; for test draft, placeholders are used until CI signing is wired.
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## Status & TODO to productionize
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- Draft signatures now generated with repo test key (`mirror-ed25519-test-1`) via `scripts/mirror/sign_thin_bundle.py`; replace with CI-held key before release.
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- CI hook: set `MIRROR_SIGN_KEY_B64` (base64-encoded Ed25519 PEM) and run `scripts/mirror/ci-sign.sh` to build+sign+verify in one step.
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- Rotate keys via TUF root role once CI secrets land.
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- Add DSSE signer to assembler pipeline so `make-thin-v1.sh` emits envelope + TUF metadata automatically in CI.
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### CI integration sketch (disabled until key is provided)
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```
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- name: Mirror thin bundle (signed)
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run: |
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export MIRROR_SIGN_KEY_B64="${{ secrets.MIRROR_SIGN_KEY_B64 }}"
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export OCI=1
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scripts/mirror/ci-sign.sh
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if: ${{ secrets.MIRROR_SIGN_KEY_B64 != '' }}
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```
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