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zeekay
443aa53f81
Decomplect the PQ finality lanes into a typed, impossible-to-confuse model where
KIND chooses the verifier and SUITE only chooses parameterization (fail-closed on
mismatch). Kills the prior conflation where the corona-backed lattice lane was
mislabeled "Pulse/Pulsar-SHA3".
Four strict evidence kinds — each its own verifier + suite + key registry:
beam-bls BLS12-381 aggregate (fast classical)
pulsar-threshold-mldsa threshold ML-DSA, verified as a STANDARD FIPS-204
ML-DSA signature under a group public key; the TALUS
dealerless machinery is entirely offline (VerifyPulsar
imports only mldsa65 — enforced by an import-hygiene test)
corona-ringtail Ringtail/Module-LWE lattice threshold (the corona kernel)
p3q-mldsa-rollup succinct rollup of independent ML-DSA-65 sigs; strict
ONLY when its proof system is PQ (classical SNARK gated)
Plus the raw mldsa-cert-set as a NON-strict availability/audit artifact.
Subject-agnostic verifiers take (subject, evidence, keyEra): one dispatch serves
the warp cross-chain digest D and the consensus finality subject
M = keccak256("QUASAR_FINALITY_V1" || chainID || height || round || blockID ||
stateRoot || signerSetID || keyEraID || generation || pChainHeight || policyID)
folding generation + pChainHeight + policyID so a signature binds its era, its
validator snapshot, and its tier (tier-downgrade replay fails closed).
Policy tiers (BLS_FAST / HYBRID_PQ_CHECKPOINT / STRICT_QUASAR / RECOVERY) select
which lanes are required — orthogonal to verification and to keys. PulsarKeyEra
and CoronaKeyEra are symmetric but DISTINCT registry types; P3Q/cert-set resolve a
per-validator SignerSetAuthority — no resolver can alias another's key material.
Offline signers (pulsard, coronad, P3Q prover) are interfaces only, never imported
by the verify path.
Wire unchanged: D, the Message c14n, messageDST, the ZAP magic and kind bytes are
byte-identical (forge Go<->Solidity equality holds; golden envelope SHA unchanged).
The corona lane DST is renamed pulseDST->coronaDST (no deployed corona sigs;
envelope KAT regenerated).
22 tests green: non-confusable dispatch, suite/kind fail-closed, Pulsar import
hygiene, subject-identity across lanes, policyID downgrade, key-era distinctness,
P3Q-classical-root strict gate.