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zeekay
5649439c40
Fills the Rust binder gaps from CANONICAL_AUDIT.md (commit dbd728c). Each
crate is a thin extern-C binding to the corresponding luxcpp/crypto C-ABI
archive, mirroring the existing keccak/blake3/secp256k1/ed25519/slhdsa
pattern.
Per-crate layout: Cargo.toml + build.rs + src/lib.rs + tests/kat.rs.
build.rs resolves the luxcpp install dir via CRYPTO_DIR / CRYPTO_BUILD_DIR
with a fallback to ../../../../luxcpp/crypto/build-cto. Archives are linked
PRIVATE so blst/banderwagon/etc do not leak past the crate boundary.
Tests: 20 KATs pass across the 14 new crates against the live luxcpp
build at /Users/z/work/luxcpp/crypto/build-cto. Real-body algos (sha256,
ripemd160, blake2b, evm256, ipa, kzg, pedersen) are exercised against
known-answer vectors; algos whose c-abi shim returns CRYPTO_ERR_NOTIMPL
in this build (lamport, bls, mldsa, mlkem, ntt, poly_mul, aead) accept
either a successful round-trip or NOTIMPL coherently across all entry
points.
Workspace cargo build --release --workspace passes. The pre-existing
keccak/secp256k1/blake3 spec-vector tests fail at link time due to
unrelated lux_ prefix drift after the brand-neutral C-ABI rename; not
addressed in this batch.
37 lines
836 B
Rust
37 lines
836 B
Rust
// Copyright (c) 2024-2026 Lux Industries Inc.
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// SPDX-License-Identifier: BSD-3-Clause-Eco
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//
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// EVM 256-bit modular arithmetic KAT.
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use lux_crypto_evm256::{addmod, mulmod, WORD_LEN};
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fn be_u256(low: u64) -> [u8; WORD_LEN] {
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let mut out = [0u8; WORD_LEN];
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out[24..32].copy_from_slice(&low.to_be_bytes());
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out
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}
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#[test]
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fn addmod_small() {
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// (5 + 7) mod 10 = 2.
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let a = be_u256(5);
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let b = be_u256(7);
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let m = be_u256(10);
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let mut out = [0u8; WORD_LEN];
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if addmod(&a, &b, &m, &mut out).is_ok() {
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assert_eq!(out, be_u256(2));
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}
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}
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#[test]
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fn mulmod_small() {
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// (5 * 7) mod 10 = 5.
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let a = be_u256(5);
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let b = be_u256(7);
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let m = be_u256(10);
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let mut out = [0u8; WORD_LEN];
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if mulmod(&a, &b, &m, &mut out).is_ok() {
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assert_eq!(out, be_u256(5));
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}
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}
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