mirror of
https://github.com/luxfi/crypto.git
synced 2026-07-27 01:54:50 +00:00
Hanzo AI
fe5fdbbca5
Two new no_std crates wrapping the C-ABI from luxcpp/crypto/ntt and
luxcpp/crypto/poly_mul.
lux-crypto-ntt:
* forward / inverse — generic-prime NTT (caller-supplied modulus + root)
* Cyclone-FFT fast path engaged automatically when (modulus, root) ==
(Q=998244353, PRIMITIVE_ROOT=629671588)
* 6 spec-vector tests:
- forward+inverse roundtrip across n in {2,4,...,1024}
- q97/omega=28 generic-prime roundtrip (matches Go reference)
- input rejection: empty, non-pow2, modulus=0
lux-crypto-poly_mul:
* multiply / multiply_into — Z_Q[X]/(X^n+1) negacyclic convolution
* Pinned to Cyclone-FFT prime (the C-ABI rejects other rings)
* 4 spec-vector tests including the canonical 10-case KAT table
(sum/first/last byte-equal to luxfi/crypto/poly_mul Go reference)
and the (1+2X+3X^2+4X^3)*(5+6X+7X^2+8X^3) hand-written negacyclic case.
build.rs links statically against libntt_cpu.a / libpoly_mul_cpu.a
produced by luxcpp/crypto/ntt and luxcpp/crypto/poly_mul; CRYPTO_BUILD_DIR
or CRYPTO_DIR points at the cmake build / install layout.
Verified: cargo test -p lux-crypto-ntt -p lux-crypto-poly_mul
6/6 ntt tests PASS, 4/4 poly_mul tests PASS.
35 lines
1019 B
Rust
35 lines
1019 B
Rust
use std::env;
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use std::path::PathBuf;
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fn main() {
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let manifest_dir = PathBuf::from(env::var("CARGO_MANIFEST_DIR").unwrap());
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let base: PathBuf = if let Ok(d) = env::var("CRYPTO_DIR") {
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PathBuf::from(d).join("lib")
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} else if let Ok(d) = env::var("CRYPTO_BUILD_DIR") {
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PathBuf::from(d)
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} else {
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manifest_dir
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.join("..")
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.join("..")
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.join("..")
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.join("..")
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.join("luxcpp")
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.join("crypto")
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.join("build-cto")
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};
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println!("cargo:rerun-if-changed=src/lib.rs");
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println!("cargo:rerun-if-env-changed=CRYPTO_DIR");
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println!("cargo:rerun-if-env-changed=CRYPTO_BUILD_DIR");
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let lib_path = base.join("ntt");
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println!("cargo:rustc-link-search=native={}", lib_path.display());
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println!("cargo:rustc-link-lib=static=ntt_cpu");
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if cfg!(target_os = "macos") {
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println!("cargo:rustc-link-lib=c++");
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} else {
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println!("cargo:rustc-link-lib=stdc++");
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}
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}
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