mirror of
https://github.com/saymrwulf/ltl-accumulator-verified.git
synced 2026-09-04 20:03:44 +00:00
mrwulf
67d9cfed43
Adversarial re-derivation of S3.5 (drill after harness switch). Core verdict CONFIRMED: extractIncl_correct is faithful and non-vacuous. Three methodical flaws found and resolved: - F1: the non-vacuity proof existed only as a deleted probe — evidence discarded. Now permanent: extractIncl_nonvacuous proves the extractor's output on a NON-forgery input is NOT a collision, so the correctness conclusion is false for some inputs and cannot be discharged by pigeonhole/choice. Guards against future drift back into vacuity. Cone pinned. - F2 (queued for S4): deleting root_binding discarded the receipt- uniqueness content of Lemma 2 (left disjunct: P = Path m D) along with its vacuous disjunct. To be restored in extractor form during S4; the S4 consistency walk inlines the same argument regardless. - F3: README still claimed 'root_binding done' — a deleted theorem advertised as delivered. Ledger corrected. 15 certs green. LTL untouched. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
33 lines
2 KiB
Markdown
33 lines
2 KiB
Markdown
# ltl-accumulator-verified
|
|
|
|
Lean 4 mechanization of the security analysis (§6) of the paper
|
|
"The Lean Transparency Log" (https://ltl.zkdefi.org/paper): the Merkle
|
|
accumulator's own correctness and soundness theorems, kernel-checked, in
|
|
the same discipline as the four `*-ed25519-verified` subject corpora.
|
|
|
|
## Status: layer scaffold (work in progress — honest ledger below)
|
|
|
|
| layer | content | status |
|
|
|---|---|---|
|
|
| L1 | bytes, hleaf/hnode, domain separation (Lemma 1) | **done** (domsep: axiom-free) |
|
|
| L2 | MTH, Root, ConsRec definitions + termination | **done** (cones: propext, LTLAcc.sha256, Quot.sound) |
|
|
| L3 | inclusion completeness (Theorem 1) | **done** (incl_complete: propext, Classical.choice, LTLAcc.sha256, Quot.sound) |
|
|
| L4 | frontier binding content (Lemma 2) | **inlined in the extractor walk** (extractIncl); standalone receipt-uniqueness theorem queued for S4 restoration in extractor form |
|
|
| L5 | inclusion soundness = EXPLICIT collision extractor extractIncl+correctness (Theorem 2) **done, non-vacuous**; consistency (Theorem 3) pending |
|
|
| L6 | pin-store state machine safety (Proposition 1) | pending |
|
|
|
|
## Discipline (identical to the subject corpora)
|
|
|
|
- `verification/Proofs/` contains ZERO `axiom` declarations; the single
|
|
sanctioned axiom site is `verification/gen/` — here, one opaque
|
|
function: SHA-256. The theorems are constructive collision extractors,
|
|
so collision resistance is never assumed, only interpreted.
|
|
- `verification/check.sh` is THE button: compiles every file through
|
|
`lean-guard` (memory cap, core pinning, timeout, single-flight lock)
|
|
and axiom-audits every certificate against its documented exact cone.
|
|
- Expected boundary: `propext, Classical.choice, Quot.sound` plus
|
|
`LTLAcc.sha256` for hash-touching certificates — documented per
|
|
certificate in `check.sh`, audited both directions.
|
|
|
|
The finished certificates are destined for the LTL itself as attestation
|
|
leaves: the log carrying kernel-checked proofs of its own machinery.
|