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hash.h
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hash.h
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// Copyright (c) 2009-2010 Satoshi Nakamoto
// Copyright (c) 2009-2013 The Bitcoin Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or https://www.opensource.org/licenses/mit-license.php .
#ifndef BITCOIN_HASH_H
#define BITCOIN_HASH_H
#include "include/ripemd160.h"
#include "include/sha256.h"
#include "include/verus_hash.h"
#include "include/uint256.h"
#include <sodium.h>
#include "prevector.h"
#include "serialize.h"
#include <vector>
typedef uint256 ChainCode;
/** A hasher class for Bitcoin's 256-bit hash (double SHA-256). */
class CHash256 {
private:
CSHA256 sha;
public:
static const size_t OUTPUT_SIZE = CSHA256::OUTPUT_SIZE;
void Finalize(unsigned char hash[OUTPUT_SIZE]) {
unsigned char buf[sha.OUTPUT_SIZE];
sha.Finalize(buf);
sha.Reset().Write(buf, sha.OUTPUT_SIZE).Finalize(hash);
}
CHash256& Write(const unsigned char *data, size_t len) {
sha.Write(data, len);
return *this;
}
CHash256& Reset() {
sha.Reset();
return *this;
}
};
/** A hasher class for Bitcoin's 160-bit hash (SHA-256 + RIPEMD-160). */
class CHash160 {
private:
CSHA256 sha;
public:
static const size_t OUTPUT_SIZE = CRIPEMD160::OUTPUT_SIZE;
void Finalize(unsigned char hash[OUTPUT_SIZE]) {
unsigned char buf[sha.OUTPUT_SIZE];
sha.Finalize(buf);
CRIPEMD160().Write(buf, sha.OUTPUT_SIZE).Finalize(hash);
}
CHash160& Write(const unsigned char *data, size_t len) {
sha.Write(data, len);
return *this;
}
CHash160& Reset() {
sha.Reset();
return *this;
}
};
/** Compute the 256-bit hash of an object. */
template<typename T1>
inline uint256 Hash(const T1 pbegin, const T1 pend)
{
static const unsigned char pblank[1] = {};
uint256 result;
CHash256().Write(pbegin == pend ? pblank : (const unsigned char*)&(*pbegin), (pend - pbegin) * sizeof(*pbegin))
.Finalize((unsigned char*)&result);
return result;
}
/** Compute the 256-bit hash of the concatenation of two objects. */
template<typename T1, typename T2>
inline uint256 Hash(const T1 p1begin, const T1 p1end,
const T2 p2begin, const T2 p2end) {
static const unsigned char pblank[1] = {};
uint256 result;
CHash256().Write(p1begin == p1end ? pblank : (const unsigned char*)&p1begin[0], (p1end - p1begin) * sizeof(p1begin[0]))
.Write(p2begin == p2end ? pblank : (const unsigned char*)&p2begin[0], (p2end - p2begin) * sizeof(p2begin[0]))
.Finalize((unsigned char*)&result);
return result;
}
/** Compute the 256-bit hash of the concatenation of three objects. */
template<typename T1, typename T2, typename T3>
inline uint256 Hash(const T1 p1begin, const T1 p1end,
const T2 p2begin, const T2 p2end,
const T3 p3begin, const T3 p3end) {
static const unsigned char pblank[1] = {};
uint256 result;
CHash256().Write(p1begin == p1end ? pblank : (const unsigned char*)&p1begin[0], (p1end - p1begin) * sizeof(p1begin[0]))
.Write(p2begin == p2end ? pblank : (const unsigned char*)&p2begin[0], (p2end - p2begin) * sizeof(p2begin[0]))
.Write(p3begin == p3end ? pblank : (const unsigned char*)&p3begin[0], (p3end - p3begin) * sizeof(p3begin[0]))
.Finalize((unsigned char*)&result);
return result;
}
/** Compute the 160-bit hash an object. */
template<typename T1>
inline uint160 Hash160(const T1 pbegin, const T1 pend)
{
static unsigned char pblank[1] = {};
uint160 result;
CHash160().Write(pbegin == pend ? pblank : (const unsigned char*)&pbegin[0], (pend - pbegin) * sizeof(pbegin[0]))
.Finalize((unsigned char*)&result);
return result;
}
/** Compute the 160-bit hash of a vector. */
inline uint160 Hash160(const std::vector<unsigned char>& vch)
{
return Hash160(vch.begin(), vch.end());
}
/** Compute the 160-bit hash of a vector. */
template<unsigned int N>
inline uint160 Hash160(const prevector<N, unsigned char>& vch)
{
return Hash160(vch.begin(), vch.end());
}
/** A writer stream (for serialization) that computes a 256-bit hash. */
class CHashWriter
{
private:
CHash256 ctx;
const int nType;
const int nVersion;
public:
CHashWriter(int nTypeIn, int nVersionIn) : nType(nTypeIn), nVersion(nVersionIn) {}
int GetType() const { return nType; }
int GetVersion() const { return nVersion; }
void write(const char *pch, size_t size) {
ctx.Write((const unsigned char*)pch, size);
}
// invalidates the object
uint256 GetHash() {
uint256 result;
ctx.Finalize((unsigned char*)&result);
return result;
}
CHashWriter &Reset()
{
ctx.Reset();
return *this;
}
template<typename T>
CHashWriter& operator<<(const T& obj) {
// Serialize to this stream
::Serialize(*this, obj);
return (*this);
}
};
template <typename SERIALIZABLE>
uint256 GetHash(const SERIALIZABLE &obj)
{
CHashWriter hw(SER_GETHASH, 0);
hw << obj;
return hw.GetHash();
}
/** A writer stream (for serialization) that computes a 256-bit hash. */
class CHashWriterSHA256
{
private:
CSHA256 ctx;
const int nType;
const int nVersion;
public:
CHashWriterSHA256(int nTypeIn, int nVersionIn) : nType(nTypeIn), nVersion(nVersionIn) {}
int GetType() const { return nType; }
int GetVersion() const { return nVersion; }
void write(const char *pch, size_t size) {
ctx.Write((const unsigned char*)pch, size);
}
// invalidates the object
uint256 GetHash() {
uint256 result;
ctx.Finalize((unsigned char*)&result);
return result;
}
CHashWriterSHA256 &Reset()
{
ctx.Reset();
return *this;
}
template<typename T>
CHashWriterSHA256& operator<<(const T& obj) {
// Serialize to this stream
::Serialize(*this, obj);
return (*this);
}
};
/** A writer stream (for serialization) that computes a 256-bit Verus hash. */
class CVerusHashWriter
{
private:
CVerusHash state;
public:
int nType;
int nVersion;
CVerusHashWriter(int nTypeIn, int nVersionIn) : nType(nTypeIn), nVersion(nVersionIn), state() { }
void Reset() { state.Reset(); }
CVerusHashWriter& write(const char *pch, size_t size) {
state.Write((const unsigned char*)pch, size);
return (*this);
}
// invalidates the object for further writing
uint256 GetHash() {
uint256 result;
state.Finalize((unsigned char*)&result);
return result;
}
int64_t *xI64p() { return state.ExtraI64Ptr(); }
CVerusHash &GetState() { return state; }
template<typename T>
CVerusHashWriter& operator<<(const T& obj) {
// Serialize to this stream
::Serialize(*this, obj);
return (*this);
}
};
/** A writer stream (for serialization) that computes a 256-bit Verus hash with key initialized to Haraka standard. */
class CVerusHashV2Writer
{
private:
CVerusHashV2 state;
public:
int nType;
int nVersion;
CVerusHashV2Writer(int nTypeIn, int nVersionIn) : nType(nTypeIn), nVersion(nVersionIn), state() {}
void Reset() { state.Reset(); }
CVerusHashV2Writer& write(const char *pch, size_t size) {
state.Write((const unsigned char*)pch, size);
return (*this);
}
// invalidates the object for further writing
uint256 GetHash() {
uint256 result;
state.Finalize((unsigned char*)&result);
return result;
}
int64_t *xI64p() { return state.ExtraI64Ptr(); }
CVerusHashV2 &GetState() { return state; }
template<typename T>
CVerusHashV2Writer& operator<<(const T& obj) {
// Serialize to this stream
::Serialize(*this, obj);
return (*this);
}
};
/** A writer stream (for serialization) that computes a 256-bit VerusHash 2.0 hash */
class CVerusHashV2bWriter
{
private:
CVerusHashV2 state;
public:
int nType;
int nVersion;
CVerusHashV2bWriter(int nTypeIn, int nVersionIn, int solutionVersion=SOLUTION_VERUSHHASH_V2, uint64_t keysize=VERUSKEYSIZE) :
nType(nTypeIn), nVersion(nVersionIn), state(solutionVersion) {}
void Reset() { state.Reset(); }
CVerusHashV2bWriter& write(const char *pch, size_t size) {
state.Write((const unsigned char*)pch, size);
return (*this);
}
// invalidates the object for further writing
uint256 GetHash() {
uint256 result;
state.Finalize2b((unsigned char*)&result);
return result;
}
inline int64_t *xI64p() { return state.ExtraI64Ptr(); }
CVerusHashV2 &GetState() { return state; }
template<typename T>
CVerusHashV2bWriter& operator<<(const T& obj) {
// Serialize to this stream
::Serialize(*this, obj);
return (*this);
}
};
const unsigned char BLAKE2Bpersonal[crypto_generichash_blake2b_PERSONALBYTES]={'V','e','r','u','s','D','e','f','a','u','l','t','H','a','s','h'};
/** A writer stream (for serialization) that computes a 256-bit BLAKE2b hash. */
class CBLAKE2bWriter
{
private:
crypto_generichash_blake2b_state state;
public:
int nType;
int nVersion;
CBLAKE2bWriter(int nTypeIn,
int nVersionIn,
const unsigned char *personal=BLAKE2Bpersonal) :
nType(nTypeIn), nVersion(nVersionIn)
{
if (crypto_generichash_blake2b_init_salt_personal(
&state,
NULL, 0, // No key.
32,
NULL, // No salt.
personal) != 0)
{
printf("%s: failed to initialize Blake2b state\n", __func__);
assert(false);
}
}
int GetType() const { return nType; }
int GetVersion() const { return nVersion; }
CBLAKE2bWriter& write(const char *pch, size_t size) {
crypto_generichash_blake2b_update(&state, (const unsigned char*)pch, size);
return (*this);
}
// invalidates the object
uint256 GetHash() {
uint256 result;
crypto_generichash_blake2b_final(&state, (unsigned char*)&result, 32);
return result;
}
template<typename T>
CBLAKE2bWriter& operator<<(const T& obj) {
// Serialize to this stream
::Serialize(*this, obj);
return (*this);
}
};
/** Compute the 256-bit hash of an object's serialization. */
template<typename T>
uint256 SerializeHash(const T& obj, int nType=SER_GETHASH, int nVersion=0)
{
CHashWriter ss(nType, nVersion);
ss << obj;
return ss.GetHash();
}
/** Compute the 256-bit Verus hash of an object's serialization. */
template<typename T>
uint256 SerializeVerusHash(const T& obj, int nType=SER_GETHASH, int nVersion=0)
{
CVerusHashWriter ss(nType, nVersion);
ss << obj;
return ss.GetHash();
}
/** Compute the 256-bit Verus hash of an object's serialization. */
template<typename T>
uint256 SerializeVerusHashV2(const T& obj, int nType=SER_GETHASH, int nVersion=0)
{
CVerusHashV2Writer ss(nType, nVersion);
ss << obj;
return ss.GetHash();
}
/** Compute the 256-bit Verus hash of an object's serialization with the final step including
* a carryless multiply-based hash as fill for the unused space.
*/
template<typename T>
uint256 SerializeVerusHashV2b(const T& obj, int solutionVersion=SOLUTION_VERUSHHASH_V2, int nType=SER_GETHASH, int nVersion=0)
{
CVerusHashV2bWriter ss(nType, nVersion, solutionVersion);
ss << obj;
return ss.GetHash();
}
unsigned int MurmurHash3(unsigned int nHashSeed, const std::vector<unsigned char>& vDataToHash);
void BIP32Hash(const ChainCode &chainCode, unsigned int nChild, unsigned char header, const unsigned char data[32], unsigned char output[64]);
#endif // BITCOIN_HASH_H