// Copyright (c) 2019-present The Bitcoin Core developers

// Distributed under the MIT software license, see the accompanying

// file COPYING or http://www.opensource.org/licenses/mit-license.php.

#include <util/hasher.h>

#include <crypto/siphash.h>

#include <random.h>

SaltedUint256Hasher::SaltedUint256Hasher() : m_hasher{

    FastRandomContext().rand64(),

    FastRandomContext().rand64()}

{}

SaltedTxidHasher::SaltedTxidHasher() : m_hasher{

    FastRandomContext().rand64(),

    FastRandomContext().rand64()}

{}

SaltedWtxidHasher::SaltedWtxidHasher() : m_hasher{

    FastRandomContext().rand64(),

    FastRandomContext().rand64()}

{}

SaltedOutpointHasher::SaltedOutpointHasher(bool deterministic) : m_hasher{

    deterministic ? 0x8e819f2607a18de6 : FastRandomContext().rand64(),

    deterministic ? 0xf4020d2e3983b0eb : FastRandomContext().rand64()}

{}

SaltedSipHasher::SaltedSipHasher() :

    m_k0{FastRandomContext().rand64()},

    m_k1{FastRandomContext().rand64()}

{}

size_t SaltedSipHasher::operator()(const std::span<const unsigned char>& script) const

{

    return CSipHasher(m_k0, m_k1).Write(script).Finalize();

}