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zeekayandHanzo Dev
c22f13f63e
THE TOTAL. `Register` in `validator/registration.go` runs seven clauses, and this port had six. The seventh is `math.Add64` on the running weight: a set whose weights sum past what a `uint64` holds is refused entire, before any of it is admitted. Without it `total_stake` folded with `saturating_add` and `voted_stake` summed with `saturating_add`, so a set of four validators at 2^63 reported `u64::MAX` staked AND `u64::MAX` voted — and `u64::MAX > floor(2·u64::MAX/3)`. A certificate carrying HALF the stake cleared the two-thirds export floor, which is the rung a bridge reads. Clamping is what makes the two sides agree on a number neither can represent, so neither clamps any more. The set carries its total as a fact established at admission with `checked_add` — one source of truth, decided at the one place that still has a registration to refuse — and `voted_stake` is checked too: the voters are a subset of the members, so against a set this crate admitted the overflow is unreachable, and reaching it is evidence about the stake source rather than about the votes. `weighted_quasar` takes the same treatment: a vector with no representable total leaves by the same door as a zero total, since a plain sum WRAPS to a small total and sizes the count gate below the stake quorum it exists to anticipate. THE SET. `insert` admits one validator and reports on that one, which is a property no set can be built out of: a caller that inserts in a loop and logs what failed is left holding a set missing a member, with `n` short by one and the total short by that member's stake — the two numbers every threshold is read against, wrong, with nothing to say so. `ValidatorSet::register` is the port of Go's whole-set door: sorted by node id so which duplicate a set is refused on cannot depend on the order a caller built its input, and all-or-nothing because the set under construction is a local. `insert` stays for a membership change to a set already live, and now says so. THE BINDING. `pkg/typescript` path-depends on `pkg/rust` and could not compile: narrowing the node id from 32 bytes to 20 left two `NodeID::from([u8; 32])` calls with no impl. It is a 20-byte API now, and the 20 bytes come from 20-byte input — `arr[..20]` would reintroduce exactly the collision the narrowing exists to prevent, so a hex string of the wrong length is refused, never trimmed. The width is `size_of::<cert::NodeId>()`, taken from the core rather than restated, so it cannot drift again. `addValidator` also stopped discarding the core's answer, which reported a validator as added when the set had refused it. And the two crates are one workspace, because that is what they already were. Built separately they can disagree and did — nothing built both, so nothing noticed. `cargo test` at the root now builds both, which turns this class of break from a review finding into a compile error. It also surfaced two tests in the binding that had been failing unnoticed: they voted with unregistered ids, from before only members were counted. No signed byte moves. `canonical_vote_message` is untouched, the node id enters no signed message, and the Go corpus and the frozen `pop` vectors pass unchanged. Verified: 97 tests green (92 rust, 5 napi), clippy clean at the workspace root, the binding's 29 JS tests green against a linux build of it. Red's PoC — four validators of 2^63, two voting, read at QUASAR — returned `Ok(())` before and now dies at registration with `WeightOverflow`. Co-authored-by: Hanzo Dev <[email protected]>
lux-consensus
Pure-Rust SDK for the Lux Quasar consensus stack — Wave threshold voting, FPC (Fast Probabilistic Consensus), Photon validator sampling, Focus confidence accumulation, and post-quantum hybrid finality via BLS12-381 + Pulsar (Module-LWE threshold, FIPS 204 byte-equal).
Features
| Flag | What it pulls in |
|---|---|
| default | CPU-only, no extra deps beyond blst and hex |
simd |
blake3 (SIMD hashing) + rayon (data-parallel vote tally) |
mlx |
Apple Silicon GPU acceleration via mlx-sys (implies simd) |
cuda |
NVIDIA GPU acceleration (implies simd) — work in progress |
gpu |
mlx + cuda — auto-select per platform |
Usage
use lux_consensus::*;
let config = QuasarConfig::mainnet();
let mut engine = QuasarEngine::new(config);
engine.start().unwrap();
let block = Block::new(
ID::from([1u8; 32]),
ID::from([0u8; 32]),
1,
b"Hello, Lux!".to_vec(),
);
engine.add(block.clone()).unwrap();
// A validator is named by its 20-byte NodeID — never the 32-byte block id.
for i in 0..20 {
engine.add_validator(NodeID::from([i; 20]), 1).unwrap();
}
for i in 0..20 {
let vote = Vote::new(block.id.clone(), VoteType::Preference, NodeID::from([i; 20]));
engine.record_vote(vote).unwrap();
}
assert!(engine.is_accepted(&block.id));
engine.stop().unwrap();
Architecture
- Wave — adaptive-threshold voting driven by FPC outputs
- FPC — PRF-derived per-round thresholds for fast probabilistic consensus
- Photon — luminance-tracked validator sampling
- Focus — β consecutive rounds of confidence before commit
- Quasar — a two-thirds-by-stake certificate: the distinct signed accepts themselves, each checked against its own signer's key
License
Lux Ecosystem License 1.2 — see the LICENSE file.