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Hanzo AI
ecaca10cdb
luxfi/crypto becomes the single Go entry point for ALL Lux-family crypto. Every public function in this module now dispatches between three implementations through a runtime-selectable backend: - vanilla: pure-Go reference (always available) - cgo: native binding (blst, libsecp256k1, ckzg) where present - gpu: batch acceleration via github.com/luxfi/accel The dispatcher reads LUX_CRYPTO_BACKEND (auto|vanilla|cgo|gpu); auto picks the most capable backend the binary was compiled and linked with. New canonical packages: backend/ runtime backend selector (env + programmatic) internal/gpuhost/ accel session lifecycle, single per-process keccak/ Keccak-256 with batch GPU dispatch sha256/ SHA-256 with batch GPU dispatch sha3/ SHA3 / SHAKE family ripemd160/ RIPEMD-160 (Bitcoin/Lux address derivation) ed25519/ Ed25519 with batch GPU verify bn254/ canonical alias for bn256 (matches FIPS naming) modexp/ canonical alias for bigmodexp evm256/ EIP-196/197 precompile ABI wrappers poseidon/ Poseidon2 hash via gnark-crypto pedersen/ Pedersen commitments over BN254 ntt/ Number-Theoretic Transform reference polymul/ negacyclic polynomial multiplication Extended existing packages with batch GPU paths: bls/batch.go BatchVerify routes through accel.BLSVerifyBatch mldsa/batch.go BatchVerify (ML-DSA-65) via accel.DilithiumVerifyBatch mlkem/batch.go BatchEncapsulate / BatchDecapsulate via Kyber kernels secp256k1/batch.go BatchVerifySignature via accel.ECDSAVerifyBatch GPU dispatch is gated on (a) backend.Default(), (b) batch size threshold, and (c) accel.Available(). When any gate fails the call falls through to the vanilla CPU path; output is byte-identical. The legacy gpu/ stub is replaced with a thin probe surface (Available, Backend, Devices, Version) that delegates to the same gpuhost session. Tests show vanilla and gpu backends produce identical outputs across all batch entry points (-race clean). See AUDIT.md for the per-algorithm state matrix and honest gaps.
36 lines
1.0 KiB
Go
36 lines
1.0 KiB
Go
// Copyright (C) 2020-2026, Lux Industries Inc. All rights reserved.
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// See the file LICENSE for licensing terms.
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package poseidon
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import (
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"errors"
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"github.com/consensys/gnark-crypto/ecc/bn254/fr/poseidon2"
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)
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// FieldSize is the size of a BN254 scalar field element in bytes.
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const FieldSize = 32
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var ErrInvalidFieldSize = errors.New("poseidon: input must be a multiple of 32 bytes")
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// Sum2 computes the Poseidon2 hash of `inputs` interpreted as a sequence of
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// 32-byte BN254 scalar field elements. It returns a single 32-byte digest.
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//
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// inputs must have length divisible by 32. Empty input is permitted and
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// returns the Poseidon2 hash of the empty preimage (well-defined per the
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// gnark-crypto spec).
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func Sum2(inputs []byte) ([FieldSize]byte, error) {
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var out [FieldSize]byte
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if len(inputs)%FieldSize != 0 {
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return out, ErrInvalidFieldSize
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}
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h := poseidon2.NewMerkleDamgardHasher()
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if _, err := h.Write(inputs); err != nil {
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return out, err
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}
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digest := h.Sum(nil)
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copy(out[:], digest)
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return out, nil
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}
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