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Antje Worring df4c537c16 magnetar: remove proof-by-rename + circular proofs; honest threshold status 
True no-reconstruction threshold SLH-DSA is impossible in the no-dealer /
no-preprocessing model a public, leaderless, permissionless chain needs
(Kondi-Kumar-Vanegas: extractable hash-based signatures cannot be thresholded
by black-box hash use). Stop pretending otherwise.

De-cheat:
  - DELETE the circular/vacuous proofs that manufactured false assurance:
    Magnetar_N1_Atom_Refinement.ec, Magnetar_N1_SHAKE_Expand.ec,
    Magnetar_N4_KeyDeriveStable.ec, lemmas/{Magnetar_CT,SLHDSA_Functional}.ec.
    The headline "strict-atom byte-equality" theorem was `apply <axiom that
    restates the theorem>`; the Lean side was `sorry`/`:= True`.
  - Re-open MAGNETAR-STRICT-ATOM (BLOCKERS): the public combiner DOES
    reconstruct the full FIPS 205 master every signature; the v1.1 "closure"
    only renamed identifiers. PROOF-CLAIMS / AXIOM-INVENTORY / TCB docs now say
    what the code does.
  - Re-label the name-grep "strict-atom" / "CT" checks as identifier-hygiene
    lint, NOT security or constant-time properties.
  - PVSS-DKG open-reveal (publishes the master to any observer) is gated as a
    TEST-ONLY path with HONEST LIMITATIONS; production does not rely on it.
  - Remove dead htRootCompute; staticcheck clean.

Honest three-leg posture (SPEC 1.0, BLOCKERS):
  - Permissionless production = INDEPENDENT FIPS 205 sigs + the weighted quorum
    certificate (luxfi/consensus), optionally STARK/FRI-compressed (luxfi/p3q).
    No key sharing, no reconstruction.
  - Trusted-hardware custody = TEE-attested combiner (trust-relocation, NOT MPC).
  - THBS-SE = RESEARCH-ONLY (transient seed reconstruction at the combiner);
    the T-SLH-DSA-MPC track (MPC over SHAKE) is the other research escape hatch.

Tests green (CGO=1, 71s). Net -923 lines.
 2026-06-21 13:06:57 -07:00
Lux Magnetar 83ce56ff0f magnetar v1.0.0: ONE construction per regime; THBS-SE permissionless threshold 
Magnetar v1.0.0 closes the permissionless-threshold story at ONE
construction --- THBS-SE (Threshold Hash-Based Signatures with
Selected-Element Reconstruction) --- and removes every legacy
seed-recombine path from the codebase.

The two production primitives at v1.0:

1. Per-validator standalone (standalone.go, unchanged from v0.5.x) ---
   the public-BFT primary primitive. Each validator holds its own FIPS
   205 keypair, signs independently, consensus collects N signatures
   into a ValidatorAggregateCert.

2. THBS-SE (thbsse.go + thbsse_field.go) --- the permissionless
   threshold companion. t-of-n committee, slot-bound commit-and-reveal,
   PUBLIC COMBINER role (anyone-can-combine, no host in TCB at sign
   time), slashable equivocation and malformed-share evidence.

Both emit byte-identical FIPS 205 signatures that unmodified verifiers
accept (TestMagnetar_Wire_FIPS205Verifiable +
TestThbsSE_Wire_FIPS205Verifiable across all 3 SHAKE modes).

Hard invariant (THBS-SE): a revealed value is allowed only if it is
also present in the final SLH-DSA signature. Forbidden reveals:
SK.seed in any party-local persistent form, SK.prf, future-slot share
material. The slot guard refuses any same-slot re-emission.

v1.0 honest open item: the strict "no transient seed at any moment"
invariant requires a v1.1 strict-atom-assembly path
(BLOCKERS.md::MAGNETAR-STRICT-ATOM-V11) that re-implements FIPS 205
sec 5/6/7/8 internally. v1.0 ships a PUBLIC COMBINER that holds the
seed for one slhdsa.SignDeterministic call and zeroizes; materially
stronger than TEE-attested privileged-aggregator constructions,
materially weaker than the strict refinement.

8 test gates + 2 bonus correctness checks:
- TestThbsSE_Wire_FIPS205Verifiable (3 modes) -- byte identity
- TestThbsSE_RejectSeedReveal
- TestThbsSE_RejectUnselectedFORS
- TestThbsSE_RejectUnselectedWOTS
- TestThbsSE_SlotReuseRejected
- TestThbsSE_OverselectedCommittee
- TestThbsSE_SlotBindingDomainSeparation
- BenchmarkThbsSE_Sign_5of7
- TestThbsSE_PublicCombiner_Determinism (bonus)
- TestKAT_ThbsSe (n=7, t=4, 3 modes, 3 messages)

Removed (legacy seed-recombine path + the proofs/CT scaffolding that
modeled it):

- ref/go/pkg/magnetar/{threshold,aggregate,combine,shamir,dkg}.go
  + tests
- ref/go/pkg/magnetar/{e2e,fuzz,n1_byte_equality}_test.go
- ref/go/pkg/thbs/ (entire subtree including dkg2/ PVSS skeleton)
- vectors/{threshold-sign,dkg}.json
- jasmin/{threshold,lib}/ (legacy seed-recombine model)
- proofs/easycrypt/ (entire tree; v1.1 ports to THBS-SE)
- ct/dudect/ (entire tree; v1.1 lands with strict-atom path)
- scripts/{check-lean-bridge,checks/ec-*,checks/jasmin,checks/extraction}.sh

Added:

- ref/go/pkg/magnetar/thbsse.go (1054 LOC; the THBS-SE construction)
- ref/go/pkg/magnetar/thbsse_field.go (GF(257) internal share math)
- ref/go/pkg/magnetar/thbsse_test.go (8 gates + 2 bonus)
- vectors/thbsse-sign.json (deterministic (n=7,t=4) KAT)
- v1.0 supersede notices on v0.x archival docs

Verification:
- GOWORK=off go build ./... && go vet ./...: clean
- go test -count=1 -short: PASS (all gates)
- go test -count=1 -race -short: PASS
- grep "reveal-and-aggregate|seed.*recombin|THBS over.*seed|aggregator.*reconstruct.*seed" *.go: 0 matches
- find ref/go/pkg -type d -name thbs: empty
 2026-06-01 12:03:22 -07:00
Hanzo AI 5ae075e14f docs: graduate from Tier C → Tier B 
v0.2.0 reaches Tier B: production library + submission scaffold
landed (v0.1 reveal-and-aggregate construction shipped in
ref/go/pkg/magnetar/ with KAT vectors). Mechanized refinement +
independent audit remain on the roadmap to Tier A.

Changes:

- README.md: flip status to Tier B. Document the v0.1 reveal-and-
  aggregate construction, the Class-N1-analog byte-equality claim,
  and the v0.1 trust caveat. List what v0.2.0 ships and what does
  NOT ship (formal proofs, ct analysis, KEM-wrapped envelopes,
  independent review, full 16-doc submission package).

- SUBMISSION-STATUS.md: flip to Tier B. Phase 1 (construction
  selection) + Phase 2 (reference implementation) marked DONE.
  Phase 3 (proof artifacts, BLK-7), Phase 4 (16-doc submission
  package, BLK-8), Phase 5 (independent review, BLK-9) remain
  open. NIST MPTC v0.3 target window held (2027 Q3 internal).

- BLOCKERS.md: BLK-1 (construction selection), BLK-2 (academic
  basis), BLK-3 (spec definition) marked CLOSED with the
  reveal-and-aggregate selection documented and the citation gap
  honestly acknowledged. BLK-4 (ref impl) marked PARTIAL — v0.1
  shipped, missing pieces (KEM-wrapped envelopes, reshare, MACs,
  large-committee path) called out. BLK-5 (KAT vectors) CLOSED.
  BLK-6/7/8/9 (interop, proofs, package, review) remain OPEN with
  updated status.

- SPEC.md (NEW): construction specification for v0.1 reveal-and-
  aggregate. Covers notation, hash domain separation, DKG protocol
  (Round 1/2/3), threshold signing (Round 1/2/Combine), Class-N1-
  analog byte-equality claim with proof sketch, trust model
  disclosure, identifiable abort taxonomy, parameter sets,
  honest non-claims.

- DEPLOYMENT-RUNBOOK.md (NEW): operator-facing trust-model
  disclosure mirroring Pulsar's runbook. The v0.1 reveal-and-
  aggregate aggregator-as-TCB caveat is identical to Pulsar's;
  same hardening matrix (TEE / mlock / ptrace-off / short-lived
  aggregator process). Lists what the caveat does NOT cover
  (Byzantine committee members, Byzantine aggregator forging
  unsigned messages, passive network observers). Honest
  non-warranties section: no independent review, no formal
  proofs, no production Lux deployment yet.

DESIGN.md left untouched — it represents the original research-
direction sketch and is preserved as a historical record.
 2026-05-19 01:25:31 -07:00