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c2cf269656
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PHASE 2 COMPLETE ON ANZA: THE FULL POINT-LEVEL LIFT
(verify_accepts_iff_decompress, button-enforced)
Port of the dalek decompress chain (byte-identical gen: the anza
extraction of sqrt_ratio_i / from_bytes / decompress matches dalek's
exactly, so DecompressSpec + FromBytesSpec port verbatim modulo the
crate namespace):
- source patch 994c469 (solana-ed25519): decompress step_2
negate-then-conditional-assign (the documented sqrt_ratio_i rewrite);
extract.sh: decompress un-opaqued, re-extracted (the step_1/step_2
external axioms vanish from the template - decompress is transparent).
- Proofs/DecompressSpec.lean: pow_p58, ct_eq/cond-assign semantics,
sqrt_core, sqrt_ratio_i_sq_spec (even root, v*r^2 = u).
- Proofs/FromBytesSpec.lean: load8_at loader, 5-window LE parse,
from_bytes_spec (exact below bit 255).
- Proofs/DecompressMain.lean: edwards_d_denote, decompress_of_canonical
(standard three axioms), verify_accepts_iff_decompress against the
anza apex shape (rb/sb/s, minus_A):
accept <=> decompress(R) = [k]*minus_A + [s]*B (as points).
check.sh: 4-tier Phase 3b (byte apex, half-lift, point equation, full
lift), each cone exactly [3 standard + Signature + sha512_hash3 +
r_bytes + s_bytes]. Full button green fresh.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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2026-07-06 01:07:14 +02:00 |
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