mirror of
https://github.com/luxfi/precompile.git
synced 2026-09-24 00:26:21 +00:00
zeekay
40def92b94
DEX module previously defaulted ProtocolFeeController to Anvil/Foundry account #0 (0xf39Fd6...92266) whose private key (0xac0974...80) is in every Foundry user's ~/.foundry. At Quasar Edition activation, any random caller could have invoked PauseDEX, ResumeDEX, or the irreversible FreezePool on the chain-wide AMM precompile — a chain-wide compromise the cryptographer review caught. Fix is a fail-closed activation gate: - dex/module.go::Configure() returns ErrDEXNoProtocolFeeController when upgrade.json dexConfig omits protocolFeeController (zero address). luxd will refuse to advance past the activation block until the operator populates the field with a real KMS-controlled multisig. - compromisedDevControllers map blocks all ten Anvil deterministic accounts; any explicit attempt to install a public dev key fails with ErrDEXCompromisedController (the address is included in the error). - dex/dex_test.go covers: zero-address rejection, all 10 anvil addresses rejected, a real address activates cleanly, random callers cannot invoke admin functions even with a real controller, and the Configure interface still returns *Config. Same audit pass also wires three previously-stub-only precompiles into the modules.RegisterModule registry so upgrade.json can gate them: - kzg4844 (LP-3665 KZG point-evaluation extensions, ConfigKey=kzg4844Config) - ed25519 (LP-3211, ConfigKey=ed25519Config) — Solana/TON/XRP signature verify lands as a first-class registered precompile alongside the legacy NewModule() metadata wrapper. - secp256r1 (EIP-7212 P256-verify, ConfigKey=secp256r1Config) — stateful adapter wraps the existing Contract.Run(input) into a contract StatefulPrecompiledContract that does gas deduction and strict-PQ refusal uniformly. - modules/registerer.go extends reservedRanges with 0x100-0x1FF (post-EVM-standard EIP band, for P256) and 0x32000...0000 to 0x32FF000...0000 (high-byte LP-3xxx classical-signature page, for ed25519). Both ranges are narrow enough that no other precompile family overlaps. router precompile audit: no Anvil default existed there (RouterConfig already used zero-as-skip semantics rather than zero-as-default). Tests: go test -count=1 -race -timeout 120s ./dex/... ./kzg4844/... \\ ./ed25519/... ./secp256r1/... ./modules/... All pass; full ./... suite (49 packages) green.
Lux Precompiled Contracts
Native EVM precompiles for the Lux blockchain. Each precompile is a Go package that implements contract.StatefulPrecompiledContract and registers via modules.RegisterModule() in its init().
Geth provides NewPrecompileAdapter() to wrap these into geth-compatible precompiles. L1 chains select which precompiles to enable via PrecompileOverrider.
Precompiles
Post-Quantum Cryptography (baseline — all Lux chains)
| Package | Address | Description | Gas |
|---|---|---|---|
mldsa |
0x0200...0006 |
ML-DSA-65 signature verify (FIPS 204) | 100k + 10/byte |
slhdsa |
0x0600...0001 |
SLH-DSA signature verify (FIPS 205) | 15k–250k by mode |
mlkem |
0x0200...0007 |
ML-KEM-768 encapsulate/decapsulate | 50k base |
xwing |
0x2221 |
X-Wing hybrid KEM (X25519 + ML-KEM-768) | 40k |
Threshold Signatures
| Package | Address | Description | Gas |
|---|---|---|---|
frost |
0x0800...0002 |
FROST Schnorr threshold verify (secp256k1/Ed25519) | 50k + 5k/signer |
cggmp21 |
0x0800...0003 |
CGGMP21 threshold ECDSA verify (secp256k1) | 75k + 10k/signer |
ringtail |
0x0200...000B |
Ring-LWE lattice threshold verify (post-quantum) | 150k + 10k/party |
Curves & Signatures
| Package | Address | Description | Gas |
|---|---|---|---|
sr25519 |
0x0A00...0001 |
Schnorrkel verify for Substrate→EVM migration | 9k + 3/byte |
ed25519 |
0x3211...0000 |
Ed25519 signature verify | 3k |
secp256r1 |
0x0100 |
P-256 ECDSA verify (WebAuthn/passkeys) | 3.5k |
Hashing
| Package | Address | Description | Gas |
|---|---|---|---|
blake3 |
0x0500...0004 |
Blake3 hash, Merkle root, KDF, XOF | 100 + 3–5/word |
kzg4844 |
0xB002 |
KZG polynomial commitment (EIP-4844) | 50k |
Privacy & ZK
| Package | Address | Description | Gas |
|---|---|---|---|
zk |
0x0900 |
ZK proof verification (Groth16, PLONK, fflonk, Halo2) | 180k–500k |
fhe |
— | Fully homomorphic encryption ops | variable |
ring |
0x9202 |
Ring signature verification | variable |
ecies |
0x9201 |
ECIES encryption/decryption | variable |
hpke |
0x9200 |
Hybrid public key encryption | variable |
DEX
| Package | Address | Description | Gas |
|---|---|---|---|
dex |
0x0400...0000 |
Native DEX (PoolManager, Router, Hooks, Lending) | variable |
Infrastructure
| Package | Address | Description | Gas |
|---|---|---|---|
ai |
0x0300...0000 |
AI mining (ML-DSA verify, TEE attestation, rewards) | variable |
quasar |
— | Hybrid consensus certificate verification | variable |
dead |
0x0000...0000 |
Dead address interceptor | minimal |
graph |
— | GraphQL query precompile | variable |
bridge |
— | Cross-chain bridge verification | variable |
attestation |
0x0300...0001-05 |
TEE/GPU attestation (NVTrust, TPM, SGX/SEV/TDX) | 25k–75k |
anchor |
0x0700...0010 |
Cross-chain state anchoring | 2.6k–25k |
vrf |
0x3213 |
ECVRF verify (RFC 9381) | 20k |
compute |
0x0300...0010 |
AI compute attestation | variable |
Support Packages
| Package | Purpose |
|---|---|
contract |
Core interfaces (StatefulPrecompiledContract, AccessibleState) |
modules |
Module registration system and reserved address ranges |
precompileconfig |
Config interfaces (Upgrade, Timestamp, IsDisabled) |
registry |
Address-to-LP mapping |
Structure
Each precompile follows this pattern:
<name>/
├── contract.go # Run(), RequiredGas(), Address()
├── contract_test.go # Tests with known vectors
├── module.go # init() → modules.RegisterModule()
└── I<Name>.sol # Solidity interface (optional)
Adding a Precompile
- Pick an address in a reserved range
- Implement
contract.StatefulPrecompiledContract - Register via
modules.RegisterModule()ininit() - Add tests (valid, invalid, gas, edge cases)
- Wire into your L1 via
PrecompileOverrideror geth'sLuxPrecompiles()
Building
go build ./...
go test ./...
go test -bench=. ./sr25519/ # benchmark a specific package
CGO is required for sr25519 (sr25519-donna C library). All other packages are pure Go.
License
Copyright (C) 2025, Lux Industries, Inc. All rights reserved.
ZK-Friendly Curves (0x0500)
| Package | Address | Description | Gas |
|---|---|---|---|
poseidon |
0x0500..05 |
Poseidon/Poseidon2 hash (ZK-optimized, PQ-safe) | 800 |
pedersen |
0x0500..06 |
Pedersen commitment (legacy, NOT PQ-safe) | 6,000 |
babyjubjub |
0x0500..07 |
Baby Jubjub curve (BN254 scalar field, zkEVM) | 3,000 |
pasta |
0x0500..08 |
Pallas + Vesta curves (Halo2 proving) | 5,000 |
Symmetric & Key Exchange
| Package | Address | Description | Gas |
|---|---|---|---|
aes |
0x9210 |
AES-256-GCM authenticated encryption | 5,000 |
chacha20 |
0x9211 |
ChaCha20-Poly1305 stream cipher | 4,000 |
x25519 |
0x9203 |
X25519 Diffie-Hellman key exchange | 10,000 |
xwing |
0x0200..0C |
X-Wing hybrid KEM (X25519 + ML-KEM-768) | 50,000 |
curve25519 |
0x9204 |
Raw Curve25519 point operations | 5,000 |
Math (0x0450)
| Package | Address | Description | Gas |
|---|---|---|---|
math |
0x0450 |
MulDiv, Sqrt, Log2, Exp, Pow (fixed-point) | 50 + 5/word |
Saves ~2000 gas per MulDiv vs Solidity. Used by every DeFi calculation.
StableSwap (0x0460)
| Package | Address | Description | Gas |
|---|---|---|---|
stableswap |
0x0460 |
Curve-style constant-sum AMM | 5,000 |
10x gas savings vs Solidity StableSwap. For pegged-asset pools (LUSD/USDC, LETH/stETH).
Compute Market (0x0310)
| Package | Address | Description | Gas |
|---|---|---|---|
compute |
0x0310 |
AI compute marketplace | 10,000-50,000 |
Integrates with A-Chain TEE attestation. Register GPU providers, submit jobs, verify compute, claim $AI rewards.