// Copyright (c) 2026 The MoonBite Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
#ifndef BITCOIN_CRYPTO_RANDOMX_HASHER_H
#define BITCOIN_CRYPTO_RANDOMX_HASHER_H

#include <cstddef>

// MoonBite (ADR-001): compute the RandomX proof-of-work hash of `input`
// (the 80-byte block header) into `output` (32 bytes, little-endian as the
// RandomX library emits it).
//
// Consensus-critical: the RandomX dataset is keyed by MBITE_RX_SEED, the
// 32-byte SHA-256 of "MBITE-RX-1" (see randomx_hasher.cpp). A stock Monero
// miner/pool keyed with Monero's seed computes the wrong dataset and produces
// invalid shares; an XMRig pointed at a MoonBite pool advertising this seed
// computes the right one. The hash value is independent of the RandomX
// runtime flags (JIT vs interpreter, light vs fast mode), so every node agrees
// on the result regardless of hardware.
//
// NOTE: per-epoch seed rotation (ADR-001 §2, every 2048 blocks) is a documented
// follow-up. It requires threading the block height/seed-block hash through the
// PoW path; the initial consensus deliberately uses a single fixed salted key
// so CBlockHeader::GetPoWHash() remains a pure function of the header.
// The single consensus RandomX key. Every component that initialises a
// RandomX cache (validation, the in-node miner, tests) MUST use exactly this.
constexpr size_t MBITE_RX_SEED_LEN = 32;
extern const unsigned char MBITE_RX_SEED[MBITE_RX_SEED_LEN];

void RandomXHashBytes(const void* input, size_t inputSize, unsigned char output[32]);

#endif // BITCOIN_CRYPTO_RANDOMX_HASHER_H