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https://github.com/saymrwulf/dalek-ed25519-verified.git
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mrwulf
4a64df2056
Canonicity pass (the layer is now closed under its own preconditions): - sub_val_spec post carries the exact value equation (exists beta <= 1, scVal r + scVal b = scVal a + ell*beta, with the underflow guard beta = 1 -> scVal a < scVal b) - add/montgomery_reduce/mul/aggregate posts all carry scVal r < ell: canonical inputs give canonical outputs everywhere. Needed because from_bytes_wide (hash-to-scalar) feeds Montgomery outputs into add. Hash-to-scalar foundation (toward Scalar::from_hash / EdDSA verify): - extraction scope + from_bytes_wide (brings constants::R); regenerated gen - source repos carry a documented Aeneas-compat patch: the bare `hi[4] = words[7] >> 20` extracts ill-typed at pin bf13c42e; masked (semantic no-op, words[7] >> 20 < 2^44) - Proofs/ScalarWideSpec.lean: R constant lemmas (R = 2^260 mod ell, witness 2^260 = R + 255*ell) and montgomery_mul_spec, the single Montgomery round: [r]*2^260 = [a]*[b], canonical bounded output check-scalar.sh: 10 proof files, 11 kernel audits, all exactly [propext, Classical.choice, Quot.sound]. Button pressed fresh: green. |
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|---|---|---|
| .. | ||
| AddSpec.lean | ||
| Basic.lean | ||
| ConstSpecs.lean | ||
| Denote.lean | ||
| EdAddAffNiels.lean | ||
| EdAddProjNiels.lean | ||
| EdConvert.lean | ||
| EdCurve.lean | ||
| EdDenote.lean | ||
| EdDouble.lean | ||
| EdMain.lean | ||
| FeQ.lean | ||
| Field.lean | ||
| FieldMain.lean | ||
| InvertSpec.lean | ||
| MulSpec.lean | ||
| P25519.lean | ||
| ReduceSpec.lean | ||
| ScalarAddSpec.lean | ||
| ScalarDenote.lean | ||
| ScalarFullMulSpec.lean | ||
| ScalarLoop.lean | ||
| ScalarMain.lean | ||
| ScalarMontSpec.lean | ||
| ScalarMulSpec.lean | ||
| ScalarReduceSpec.lean | ||
| ScalarSubSpec.lean | ||
| ScalarWideSpec.lean | ||
| Square2Spec.lean | ||
| SquareSpec.lean | ||
| SubNegSpec.lean | ||