Fase 4: firma Ed25519 del .swm + TrustStore local
Cierra el item de firma del modelo de confianza (SDD 09 §3, §5).
hammer-core/src/sign.rs:
- KeyPair: genera (getrandom), carga/serializa claves base64, escribe
<name>.ed25519 (0600) + <name>.ed25519.pub, y firma un Swm.
- TrustStore::load(dir): lee *.ed25519.pub; dir ausente ⇒ store vacío.
- Swm::verify_signature(&trust) → SigStatus {Trusted|UnknownKey|BadSig|
Unsigned}. Bytes firmados = JSON canónico de (swm_version, base,
mutations) sin la firma; deterministas (pins en BTreeMap).
- 8 tests: sign/verify, tamper, wrong-key, roundtrip en disco, dir ausente.
CLI:
- hammer keygen <name> [--out DIR]
- hammer swm-sign <file> --key K [--by N] [-o OUT]
- hammer swm-verify <file> --trust DIR (reporta trusted/unknown-key/
bad-sig/unsigned; bad-sig aborta, lo demás informa).
La firma da autoría + integridad pero NO autoriza promover: apply sigue
reproduciendo y comparando. Verificado e2e por el CLI (keygen→sign→verify
en los 4 estados). 22 binarios de test verdes.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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co-authored by
Claude Opus 4.8
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@@ -35,6 +35,8 @@ blake3 = "1"
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sha2 = "0.10"
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hex = "0.4"
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base64 = "0.22"
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ed25519-dalek = "2"
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getrandom = "0.2"
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nix = { version = "0.30", default-features = false, features = ["fanotify", "fs", "user"] }
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tempfile = "3"
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clap = { version = "4", features = ["derive"] }
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