Picks up the 2026-06-06 relicensing:
- luxfi/vm v1.2.0 → Lux Ecosystem License v1.2 (was Lux Research v1.0).
License-only retag of the extracted runtime; patent reservation
preserved for runtime optimization surfaces, royalty-free for
Descending Chains.
- luxfi/sampler v1.1.0 → BSD-3-Clause (was Lux Research v1.0).
License restored to match the luxfi/node provenance (originally
extracted from node/utils/sampler).
- luxfi/staking v1.5.0 → BSD-3-Clause (was Lux Research v1.0).
License restored to match the luxfi/node provenance.
No code changes in this commit — go.mod/go.sum only.
Migrates the canonical Lattigo-derived Montgomery NTT body from
luxfi/lattice/v7/ring into luxfi/math/ntt/canonical. This is the
ownership inversion LP-107 Phase 3 calls for: the math substrate
now OWNS the canonical body, and luxfi/lattice/ring becomes a thin
shim over it.
ntt/canonical/ — new public package with the canonical body:
* subring.go — SubRing struct + constructors (269 LoC)
* ntt.go — NTT/INTT body, loop-unrolled-by-16 (1320 LoC)
* ntt_simd.go — SIMD AVX2 dispatcher (405 LoC, build-tagged)
* ntt_simd_stub.go — purego dispatcher stub for non-SIMD builds
* modular_reduction.go — Barrett + Montgomery scalars
* factorization.go — prime factorization helpers
* utils.go — primitive root finders, parameter helpers
* vec_ops.go — vectorized polynomial helpers
* weierstrass.go — companion algebraic helpers
ntt/purego.go — REWORK: the pureGoBackend now holds *canonical.SubRing
instead of *lattice/v7/ring.SubRing; the lattice/v7/ring import is
GONE. Cycle-free: GOWORK=off go list -deps github.com/luxfi/math/ntt
shows zero github.com/luxfi/lattice imports.
Total: ~3.7K LoC of canonical body migrated. Public API unchanged
for downstream callers — luxfi/lattice/ring re-exports the same
SubRing.NTT/INTT surface from the new owner location.
Tests: GOWORK=off go test ./... in luxfi/math/.claude/worktrees/lp-107-phase3
ok github.com/luxfi/math/ntt (cached)
ok github.com/luxfi/math/ntt/canonical 0.276s
+ every other package green.
ntt, poly, rns, sample
Eight pure-Go reference packages that own the canonical semantics of
every cryptographic-math primitive Lux protocols share. Backends
(AVX2 / NEON / cgo+C++ / CUDA / Metal / WGSL) plug in behind the
substrate; KATs gate byte-equality across them.
Packages added:
* params/ — ModulusID, NTTParamID, FHEParamID, PulsarParamID,
HashSuiteID, BackendID; KATHeader required-fields
schema. Stable string IDs; renaming is a breaking
change.
* backend/ — Policy enum (PureGo / NativeCPU / GPUPreferred /
GPURequired); Resolve(policy, registered) returns the
BackendID per LP-107's fallback chain. GPURequired
returns ErrUnavailable when no GPU backend is
registered.
* codec/ — Bounded readers (closes lattice issues #2 + #4 DoS
class permanently). Limits + LimitError + Reader.
ReadUint{16,32,64}Slice all reject the 70T-element
attack input before allocating; depth + frame-bytes
caps; iterative (no recursion). Regression test
TestReadUint64Slice_RejectsHugeLength encodes the
original lattice issue #4 input.
* modarith/ — Modulus type with QInv, R2, Barrett constants
(computed via math/big once per modulus). AddMod /
SubMod / MulMod (Div64 reference path). MontMulMod /
ToMontgomery / FromMontgomery cross-checked against
MulMod across 100 random Pulsar-Q pairs.
ReductionMode enum byte-equal to lattice/types.
* ntt/ — Service + Backend interface; pure-Go backend
delegates to lattice/v7/ring.SubRing.NTT/INTT (the
canonical Lattigo-derived Montgomery NTT body — no
re-implementation, just dispatch). Round-trip +
batch + determinism tests on Pulsar N=256.
* poly/ — Add / Sub / ScalarMul / PointwiseMul (NTT-domain) /
negacyclic Mul (NTT round-trip). Composes modarith +
ntt; no lower-level reach.
* rns/ — Basis(Moduli, Name) for FHE RNS chains. Single +
two-prime construction validated; rejects even moduli.
Phase 3 will add basis-extension and modulus-switching.
* sample/ — Uniform (rejection sampling, mask-and-retry); Ternary
(density + sign byte); CenteredBinomial (popcount
difference); DiscreteGaussianRejection (6-sigma cutoff).
All take an io.Reader so callers can KAT-replay.
Architecture invariants enforced in package docs:
- Go is the canonical semantic reference.
- Backend selection MUST NOT alter transcript bytes (consensus
paths default to PolicyPureGo / PolicyNativeCPU).
- No unbounded codec readers anywhere near wire formats.
- No re-implementation: where lattice/v7/ring already owns the
canonical body, we delegate, not fork.
- One ID space; renaming is a breaking change.
Test posture: 8/8 packages green via `GOWORK=off go test ./...`.
Phases 3-7 (queued):
3. lattice consumes math
4. pulsar consumes lattice + math
5. fhe consumes math
6. luxcpp/crypto/math native backend mirror
7. cross-runtime KAT release gate
See SUBSTRATE.md for the full posture and migration plan; full LP at
~/work/lux/lps/LP-107-lux-math-substrate.md.
- Add Zero[T any]() generic function for zero values
- Add IsSortedBytes for byte slice sorting checks
- Add heap/queue.go with priority Queue[T] implementation
- Add heap/map.go with indexed Map[K,V] for heap operations
- Add linked/list.go with doubly-linked List[T]
- Add linked/hashmap.go with ordered HashMap[K,V]
- Update sampleable_set.go to use local luxmath.Zero[T]()
- Update averager_heap.go to use github.com/luxfi/math/heap
- Update safe_math.go to use luxmath.Zero[T]()
- Remove github.com/luxfi/utils dependency entirely
- Replace github.com/luxfi/node/utils with github.com/luxfi/utils
- Replace github.com/luxfi/node/utils/sampler with github.com/luxfi/sampler
- Replace github.com/luxfi/node/utils/wrappers with github.com/luxfi/utils/wrappers
- Replace github.com/luxfi/node/utils/json with github.com/luxfi/utils/json
- Remove local replace directive for luxfi/utils
- Use published github.com/luxfi/utils v1.0.0
- Update github.com/luxfi/geth: v1.16.34 -> v1.16.43
- Update github.com/luxfi/ids: v1.0.2 -> v1.1.4
- Update github.com/luxfi/crypto: v1.2.9 -> v1.17.15
- Update Go version to 1.25.5
- All tests pass
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