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312 lines
8.9 KiB
C++
312 lines
8.9 KiB
C++
// Copyright (c) 2009-2010 Satoshi Nakamoto
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// Copyright (c) 2009-2020 The Bitcoin Core developers
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// Copyright (c) 2014-2023 The Dash Core developers
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// Distributed under the MIT software license, see the accompanying
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// file COPYING or http://www.opensource.org/licenses/mit-license.php.
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#ifndef BITCOIN_HASH_H
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#define BITCOIN_HASH_H
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#include <attributes.h>
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#include <crypto/common.h>
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#include <crypto/ripemd160.h>
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#include <crypto/sha256.h>
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#include <prevector.h>
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#include <serialize.h>
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#include <uint256.h>
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#include <version.h>
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#include <crypto/sph_blake.h>
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#include <crypto/sph_bmw.h>
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#include <crypto/sph_groestl.h>
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#include <crypto/sph_jh.h>
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#include <crypto/sph_keccak.h>
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#include <crypto/sph_skein.h>
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#include <crypto/sph_luffa.h>
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#include <crypto/sph_cubehash.h>
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#include <crypto/sph_shavite.h>
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#include <crypto/sph_simd.h>
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#include <crypto/sph_echo.h>
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#include <vector>
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typedef uint256 ChainCode;
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/* ----------- Bitcoin Hash ------------------------------------------------- */
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/** A hasher class for Bitcoin's 256-bit hash (double SHA-256). */
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class CHash256 {
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private:
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CSHA256 sha;
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public:
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static const size_t OUTPUT_SIZE = CSHA256::OUTPUT_SIZE;
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void Finalize(Span<unsigned char> output) {
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assert(output.size() == OUTPUT_SIZE);
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unsigned char buf[CSHA256::OUTPUT_SIZE];
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sha.Finalize(buf);
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sha.Reset().Write(buf, CSHA256::OUTPUT_SIZE).Finalize(output.data());
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}
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CHash256& Write(Span<const unsigned char> input) {
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sha.Write(input.data(), input.size());
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return *this;
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}
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CHash256& Reset() {
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sha.Reset();
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return *this;
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}
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};
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/** A hasher class for Bitcoin's 160-bit hash (SHA-256 + RIPEMD-160). */
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class CHash160 {
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private:
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CSHA256 sha;
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public:
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static const size_t OUTPUT_SIZE = CRIPEMD160::OUTPUT_SIZE;
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void Finalize(Span<unsigned char> output) {
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assert(output.size() == OUTPUT_SIZE);
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unsigned char buf[CSHA256::OUTPUT_SIZE];
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sha.Finalize(buf);
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CRIPEMD160().Write(buf, CSHA256::OUTPUT_SIZE).Finalize(output.data());
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}
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CHash160& Write(Span<const unsigned char> input) {
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sha.Write(input.data(), input.size());
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return *this;
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}
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CHash160& Reset() {
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sha.Reset();
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return *this;
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}
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};
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/** Compute the 256-bit hash of an object. */
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template<typename T>
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inline uint256 Hash(const T& in1)
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{
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uint256 result;
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CHash256().Write(MakeUCharSpan(in1)).Finalize(result);
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return result;
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}
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/** Compute the 256-bit hash of the concatenation of two objects. */
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template<typename T1, typename T2>
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inline uint256 Hash(const T1& in1, const T2& in2) {
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uint256 result;
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CHash256().Write(MakeUCharSpan(in1)).Write(MakeUCharSpan(in2)).Finalize(result);
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return result;
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}
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/** Compute the 160-bit hash an object. */
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template<typename T1>
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inline uint160 Hash160(const T1& in1)
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{
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uint160 result;
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CHash160().Write(MakeUCharSpan(in1)).Finalize(result);
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return result;
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}
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/** A writer stream (for serialization) that computes a 256-bit hash. */
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class CHashWriter
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{
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private:
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CSHA256 ctx;
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const int nType;
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const int nVersion;
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public:
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CHashWriter(int nTypeIn, int nVersionIn) : nType(nTypeIn), nVersion(nVersionIn) {}
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int GetType() const { return nType; }
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int GetVersion() const { return nVersion; }
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void write(Span<const std::byte> src)
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{
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ctx.Write(UCharCast(src.data()), src.size());
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}
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/** Compute the double-SHA256 hash of all data written to this object.
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*
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* Invalidates this object.
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*/
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uint256 GetHash() {
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uint256 result;
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ctx.Finalize(result.begin());
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ctx.Reset().Write(result.begin(), CSHA256::OUTPUT_SIZE).Finalize(result.begin());
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return result;
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}
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/** Compute the SHA256 hash of all data written to this object.
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*
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* Invalidates this object.
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*/
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uint256 GetSHA256() {
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uint256 result;
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ctx.Finalize(result.begin());
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return result;
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}
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/**
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* Returns the first 64 bits from the resulting hash.
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*/
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inline uint64_t GetCheapHash() {
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uint256 result = GetHash();
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return ReadLE64(result.begin());
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}
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template<typename T>
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CHashWriter& operator<<(const T& obj) {
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// Serialize to this stream
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::Serialize(*this, obj);
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return (*this);
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}
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};
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/** Reads data from an underlying stream, while hashing the read data. */
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template<typename Source>
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class CHashVerifier : public CHashWriter
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{
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private:
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Source* source;
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public:
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explicit CHashVerifier(Source* source_) : CHashWriter(source_->GetType(), source_->GetVersion()), source(source_) {}
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void read(Span<std::byte> dst)
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{
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source->read(dst);
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this->write(dst);
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}
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void ignore(size_t nSize)
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{
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std::byte data[1024];
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while (nSize > 0) {
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size_t now = std::min<size_t>(nSize, 1024);
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read({data, now});
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nSize -= now;
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}
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}
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template<typename T>
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CHashVerifier<Source>& operator>>(T&& obj)
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{
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// Unserialize from this stream
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::Unserialize(*this, obj);
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return (*this);
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}
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};
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/** Writes data to an underlying source stream, while hashing the written data. */
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template <typename Source>
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class HashedSourceWriter : public CHashWriter
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{
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private:
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Source& m_source;
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public:
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explicit HashedSourceWriter(Source& source LIFETIMEBOUND) : CHashWriter{source.GetType(), source.GetVersion()}, m_source{source} {}
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void write(Span<const std::byte> src)
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{
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m_source.write(src);
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CHashWriter::write(src);
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}
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template <typename T>
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HashedSourceWriter& operator<<(const T& obj)
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{
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::Serialize(*this, obj);
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return *this;
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}
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};
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/** Compute the 256-bit hash of an object's serialization. */
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template<typename T>
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uint256 SerializeHash(const T& obj, int nType=SER_GETHASH, int nVersion=PROTOCOL_VERSION)
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{
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CHashWriter ss(nType, nVersion);
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ss << obj;
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return ss.GetHash();
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}
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/** Single-SHA256 a 32-byte input (represented as uint256). */
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[[nodiscard]] uint256 SHA256Uint256(const uint256& input);
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unsigned int MurmurHash3(unsigned int nHashSeed, Span<const unsigned char> vDataToHash);
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void BIP32Hash(const ChainCode &chainCode, unsigned int nChild, unsigned char header, const unsigned char data[32], unsigned char output[64]);
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/* ----------- Dash Hash ------------------------------------------------ */
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template<typename T1>
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inline uint256 HashX11(const T1 pbegin, const T1 pend)
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{
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sph_blake512_context ctx_blake;
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sph_bmw512_context ctx_bmw;
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sph_groestl512_context ctx_groestl;
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sph_jh512_context ctx_jh;
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sph_keccak512_context ctx_keccak;
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sph_skein512_context ctx_skein;
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sph_luffa512_context ctx_luffa;
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sph_cubehash512_context ctx_cubehash;
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sph_shavite512_context ctx_shavite;
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sph_simd512_context ctx_simd;
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sph_echo512_context ctx_echo;
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static unsigned char pblank[1];
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uint512 hash[11];
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sph_blake512_init(&ctx_blake);
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sph_blake512 (&ctx_blake, (pbegin == pend ? pblank : static_cast<const void*>(&pbegin[0])), (pend - pbegin) * sizeof(pbegin[0]));
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sph_blake512_close(&ctx_blake, static_cast<void*>(&hash[0]));
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sph_bmw512_init(&ctx_bmw);
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sph_bmw512 (&ctx_bmw, static_cast<const void*>(&hash[0]), 64);
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sph_bmw512_close(&ctx_bmw, static_cast<void*>(&hash[1]));
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sph_groestl512_init(&ctx_groestl);
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sph_groestl512 (&ctx_groestl, static_cast<const void*>(&hash[1]), 64);
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sph_groestl512_close(&ctx_groestl, static_cast<void*>(&hash[2]));
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sph_skein512_init(&ctx_skein);
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sph_skein512 (&ctx_skein, static_cast<const void*>(&hash[2]), 64);
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sph_skein512_close(&ctx_skein, static_cast<void*>(&hash[3]));
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sph_jh512_init(&ctx_jh);
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sph_jh512 (&ctx_jh, static_cast<const void*>(&hash[3]), 64);
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sph_jh512_close(&ctx_jh, static_cast<void*>(&hash[4]));
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sph_keccak512_init(&ctx_keccak);
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sph_keccak512 (&ctx_keccak, static_cast<const void*>(&hash[4]), 64);
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sph_keccak512_close(&ctx_keccak, static_cast<void*>(&hash[5]));
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sph_luffa512_init(&ctx_luffa);
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sph_luffa512 (&ctx_luffa, static_cast<void*>(&hash[5]), 64);
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sph_luffa512_close(&ctx_luffa, static_cast<void*>(&hash[6]));
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sph_cubehash512_init(&ctx_cubehash);
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sph_cubehash512 (&ctx_cubehash, static_cast<const void*>(&hash[6]), 64);
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sph_cubehash512_close(&ctx_cubehash, static_cast<void*>(&hash[7]));
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sph_shavite512_init(&ctx_shavite);
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sph_shavite512(&ctx_shavite, static_cast<const void*>(&hash[7]), 64);
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sph_shavite512_close(&ctx_shavite, static_cast<void*>(&hash[8]));
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sph_simd512_init(&ctx_simd);
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sph_simd512 (&ctx_simd, static_cast<const void*>(&hash[8]), 64);
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sph_simd512_close(&ctx_simd, static_cast<void*>(&hash[9]));
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sph_echo512_init(&ctx_echo);
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sph_echo512 (&ctx_echo, static_cast<const void*>(&hash[9]), 64);
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sph_echo512_close(&ctx_echo, static_cast<void*>(&hash[10]));
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return hash[10].trim256();
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}
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#endif // BITCOIN_HASH_H
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