saymrwulf/pasta-pallas-verified
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pasta field WIP: add/const/reduce/mul spec drafts + memory-lean discharge

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AddSpec: sub_spec preconditions discharged by exact matches (the blanket
simp[*] discharge here is what OOM-crashed the session — see
formal-verification-control/POSTMORTEM-2026-07-02.md). ConstSpecs: R/R2/INV/
zero/one literal specs. ReduceSpec: full HAC 14.32 Montgomery accounting —
per-round dropped-limb-is-zero facts from k = r·INV, exact t'·2^256 = t + m·p
identity, composition with the general sub_spec reduction. MulSpec: 16-mac
schoolbook accounting via zify + linear_combination (nonlinear cross-products
are atoms), composed with montgomery_reduce_spec. DRAFTS: written against the
generated code but not yet compiled; README carries an explicit construction
note until check.sh goes green.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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mrwulf 2026-07-02 17:23:44 +02:00
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7
README.md
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@ -23,6 +23,13 @@ statements; this repository exists to do it properly.)
## Layer status
> **Construction note (2026-07-02):** the field layer is mid-build. PROVEN and
> compiled: PPallas (primality), Denote (Montgomery denotation), HelperSpecs
> (adc/sbb/mac), SubNegSpec (sub/neg). DRAFTED, awaiting compilation:
> AddSpec, ConstSpecs, ReduceSpec (Montgomery reduction), MulSpec. Not yet
> written: SquareSpec, InvertSpec, FieldMain (the certificate), check.sh.
> This note is removed when `verification/check.sh` goes green end-to-end.
| Layer | Certificate | Status | Axioms of certificate |
|-------|-------------|--------|-----------------------|
| Field 𝔽_p (Montgomery) | `fieldImplementation` | ⏳ in progress | — |

2
verification/lean-guard
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@ -106,7 +106,7 @@ if systemd-run --user --scope -p MemoryMax=10M --quiet -- /bin/true 2>/dev/null;
# --scope runs the command as a child of THIS shell (env inherited),
# merely placing it in a fresh cgroup with the hard caps below.
systemd-run --user --scope --quiet \
-p MemoryMax="${CGROUP_MB}M" -p MemorySwapMax=256M -p LimitCORE=0 \
-p MemoryMax="${CGROUP_MB}M" -p MemorySwapMax=256M \
-- taskset -c "$CORES" \
timeout --signal=TERM --kill-after=15 "$TIMEOUT_SEC" \
lean -M "$MEM_MB" -o "$OLEAN_FILE" "$LEAN_FILE" "$@"