mirror of
https://github.com/luxfi/math.git
synced 2026-07-27 03:38:49 +00:00
Hanzo AI
e018a9c3d1
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.
97 lines
2.2 KiB
Go
97 lines
2.2 KiB
Go
// Copyright (c) 2026 Lux Industries Inc.
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// SPDX-License-Identifier: BSD-3-Clause
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package params
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import "testing"
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func TestModulusID_Validate(t *testing.T) {
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for _, id := range []ModulusID{
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ModPulsarQ, ModNTT998,
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ModFHE_PN10QP27, ModFHE_PN11QP54, ModFHE_PN9QP28_STD128,
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} {
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if err := id.Validate(); err != nil {
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t.Errorf("%s: %v", id, err)
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}
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}
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if err := ModulusID("not-a-real-id").Validate(); err == nil {
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t.Error("Validate(unknown) returned nil")
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}
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}
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func TestNTTParamID_Validate(t *testing.T) {
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for _, id := range []NTTParamID{
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NTTPulsarN256, NTTFHE_PN10QP27_N1024,
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NTTFHE_PN11QP54_N2048, NTTFHE_PN9QP28_N512,
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} {
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if err := id.Validate(); err != nil {
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t.Errorf("%s: %v", id, err)
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}
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}
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}
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func TestFHEParamID_Validate(t *testing.T) {
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for _, id := range []FHEParamID{
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FHE_PN10QP27, FHE_PN11QP54, FHE_PN9QP28_STD128,
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} {
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if err := id.Validate(); err != nil {
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t.Errorf("%s: %v", id, err)
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}
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}
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}
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func TestPulsarParamID_Validate(t *testing.T) {
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if err := PulsarLP073.Validate(); err != nil {
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t.Errorf("%s: %v", PulsarLP073, err)
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}
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}
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func TestHashSuiteID_Validate(t *testing.T) {
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for _, id := range []HashSuiteID{HashPulsarSHA3, HashBLAKE3} {
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if err := id.Validate(); err != nil {
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t.Errorf("%s: %v", id, err)
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}
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}
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}
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func TestBackendID_Validate(t *testing.T) {
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for _, id := range []BackendID{
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BackendPureGo, BackendNative, BackendAVX2, BackendNEON,
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BackendCUDA, BackendMetal, BackendWGSL,
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} {
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if err := id.Validate(); err != nil {
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t.Errorf("%s: %v", id, err)
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}
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}
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}
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func TestKATHeader_Validate(t *testing.T) {
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good := KATHeader{
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ParameterSet: "pulsar-lp073",
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ModulusID: ModPulsarQ,
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BackendID: BackendPureGo,
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HashSuiteID: HashPulsarSHA3,
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ImplementationName: "luxfi/pulsar",
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ImplementationVersion: "v0.1.4",
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}
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if err := good.Validate(); err != nil {
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t.Errorf("good KATHeader: %v", err)
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}
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bad := KATHeader{}
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if err := bad.Validate(); err == nil {
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t.Error("empty KATHeader.Validate() returned nil")
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}
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noVer := good
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noVer.ImplementationVersion = ""
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if err := noVer.Validate(); err == nil {
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t.Error("missing ImplementationVersion returned nil")
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}
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var nilHdr *KATHeader
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if err := nilHdr.Validate(); err == nil {
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t.Error("nil KATHeader returned nil")
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}
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}
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