Files
zeekay ae2f23dd35 fix(ci): unblock make checks — quoting, gofmt, lint:ignore, no-stub policy
Static-checks job has been failing on every PR (including #3) due to a
shell-interpolation bug in the Makefile + a build of accumulated lint
findings the bug had been hiding. Cleaned up end-to-end so make checks
runs green and PR #3 (security/readuint-slice-dos-2026-03-03) can land.

1. Makefile fmt-step: quote $$FMTOUT in `[ -z $$FMTOUT ]` test.
   Unquoted, multi-file go-fmt output word-splits and the test sees
   `[ -z FILE1 FILE2 ]` -> "/bin/sh: [: FILE2: unexpected operator".
   Same fix to the trailing `echo $$FMTOUT`.

2. go fmt sweep: gpu/gpu.go, gpu/gpu_test.go, types/reduction_test.go,
   types/trust_test.go had whitespace-only formatter findings that the
   crashing fmt-test step had been hiding.

3. ST1003 (mixed-case identifier): four wire-format-pinned consts in
   types/trust.go (TrustCpuGpuCompositeTEE / IOLevelCpu*) carry a
   //lint:ignore directive — their String() return values are part of
   the wire/log contract documented at line 80 ("do not rename"), so
   the Go-side identifiers must stay byte-aligned with the wire spelling.

4. ST1005 (capitalized error string): two error strings in gpu/gpu.go
   rephrased to lead with a noun ("ring degree N" / "modulus Q-1"
   instead of capital "N" / capital "Q") without changing semantics.

5. ST1000 (package comment): gpu/gpu_montgomery_*.go file header
   reformatted so the "Package gpu" line is the leading sentence.

6. G104 (unhandled errors): four `prng.Read(b)` call sites in gpu/gpu.go
   now `_, _ = prng.Read(b)` — the PRNG is keyed sampling output; read
   length is bounded by buffer length and a short read here is not a
   correctness issue.

7. G115 (int -> uint conversion): types/reduction.go switches `bitlen`
   to int (matches bits.Len64's return type, used only against literal
   small ints in the comparison ladder). gpu/gpu_montgomery_purego.go
   adds /* #nosec G115 */ on uint32(s.N) — s.N is validated >0 and
   bounded by ring degree above.

8. NO-STUB POLICY: gpu/gpu_montgomery_stub.go renamed to
   gpu/gpu_montgomery_purego.go and given a real pure-Go body that
   delegates to ring.SubRing.NTT / INTT (the canonical Go implementation
   in this repo). The "stub" name was misleading: there should never be
   a Lux Go file that returns "GPU unavailable" errors when the cgo+gpu
   build tag is unset — the pure-Go path is the canonical reference and
   always works. Output is byte-equal to the cgo+gpu path, identical
   semantics across build tags.

   Same rename for ring/ntt_simd_stub.go -> ring/ntt_simd_dispatch_purego.go
   with comment update: it's a dispatch hook (returns false to signal
   "use canonical scalar NTT below"), not an incomplete impl.

Verification:
* make checks: all 6 substeps PASS (go fmt / vet / goimports / staticcheck /
  govulncheck / gosec) on this branch.
* go test -count=1 ./...: all packages green; ring + ringqp + schemes/bgv
  + schemes/ckks + multiparty + utils/* all pass.
2026-05-04 08:37:27 -07:00
..