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BTCCollider.cpp
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BTCCollider.cpp
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/*
* This file is part of the BTCCollider distribution (https://github.com/JeanLucPons/BTCCollider).
* Copyright (c) 2020 Jean Luc PONS.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, version 3.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "BTCCollider.h"
#include "Base58.h"
#include "Bech32.h"
#include "hash/sha256.h"
#include "hash/sha512.h"
#include "IntGroup.h"
#include "Timer.h"
#include "hash/ripemd160.h"
#include <string.h>
#define _USE_MATH_DEFINES
#include <math.h>
#include <algorithm>
#ifndef WIN64
#include <pthread.h>
#endif
using namespace std;
#ifdef WIN64
DWORD WINAPI _InitKey(LPVOID lpParam) {
#else
void *_InitKey(void *lpParam) {
#endif
TH_PARAM *p = (TH_PARAM *)lpParam;
p->obj->InitKey(p);
return 0;
}
// ----------------------------------------------------------------------------
BTCCollider::BTCCollider(Secp256K1 *secp, bool useGpu, bool stop, std::string outputFile, std::string workFile,
std::string iWorkFile, uint32_t savePeriod, uint32_t n, int dp,bool extraPoints) {
this->secp = secp;
this->useGpu = useGpu;
this->outputFile = outputFile;
this->useSSE = useSSE;
this->nbGPUThread = 0;
this->colSize = n;
this->CPU_GRP_SIZE = 128;
this->initDPSize = dp;
this->extraPoints = extraPoints;
this->workFile = workFile;
this->saveWorkPeriod = savePeriod;
if (iWorkFile.length() > 0) {
LoadWork(iWorkFile);
} else {
// Seed
initialSeed = Timer::getSeed(32);
offsetCount = 0;
nbLoadedWalk = 0;
fetchedWalk = 0;
offsetTime = 0.0;
loadedX=NULL;
loadedY=NULL;
}
seed.SetInt32(0);
sha256((uint8_t *)initialSeed.c_str(), (int)initialSeed.length(), (uint8_t *)seed.bits64);
printf("Collision: %d bits\n", this->colSize);
printf("Seed: %s\n", seed.GetBase16().c_str());
// Derived from pairgen (https://github.com/basil00/pairgen.git)
// Given a hash160 H comprised on {h0, h1, .., h9} 16-bit parts, then H is
// mapped to a public key P as follows:
// P = pub[0][h0] + pub[1][h1] + .. + pub[9][h9]
// The calculation is truncated according to the length n. The corresponding
// private key P' is:
// P' = priv[0]+h0 + priv[1]+h1*2^16 + .. + priv[9]+h9*2^144
// Each base private key is chosen randomly and computed in advanced.
TH_PARAM params[10];
memset(params, 0, sizeof(params));
printf("Initializing:");
#ifndef WIN64
fflush(stdout);
#endif
Point GP = secp->G;
Int KP;
KP.SetInt32(1);
for (int i = 0; i < 10; i++) {
Gp[i] = GP;
Kp[i] = KP;
for (int j = 0; j < 16; j++)
GP = secp->DoubleDirect(GP);
KP.ShiftL(16);
}
size_t kSize = 10*65536*2*sizeof(Int);
pub = (Int *)malloc(kSize);
if (pub == NULL) {
printf("Cannot allocate memory for input keys !\n");
exit(0);
}
THREAD_HANDLE threadIDs[10];
for (int i = 0; i < 10; i++) {
params[i].threadId = i;
Rand(&seed,¶ms[i].localSeed);
threadIDs[i] = LaunchThread(_InitKey,params+i);
}
JoinThreads(threadIDs,10);
FreeHandles(threadIDs,10);
printf("Done\n");
nbFull = colSize / 16 ; // Number of full word
int leftBit = colSize % 16;
colMask = (1 << (16 - leftBit)) - 1;
colMask = ~colMask;
#ifdef WIN64
colMask = _byteswap_ushort(colMask);
#else
colMask = __builtin_bswap16(colMask);
#endif
hashTable.SetParam(colSize,nbFull,colMask);
beta1.SetBase16("7ae96a2b657c07106e64479eac3434e99cf0497512f58995c1396c28719501ee");
lambda1.SetBase16("5363ad4cc05c30e0a5261c028812645a122e22ea20816678df02967c1b23bd72");
beta2.SetBase16("851695d49a83f8ef919bb86153cbcb16630fb68aed0a766a3ec693d68e6afa40");
lambda2.SetBase16("ac9c52b33fa3cf1f5ad9e3fd77ed9ba4a880b9fc8ec739c2e0cfc810b51283ce");
char *ctimeBuff;
time_t now = time(NULL);
ctimeBuff = ctime(&now);
printf("Start %s", ctimeBuff);
}
// ----------------------------------------------------------------------------
void BTCCollider::LoadWork(string fileName) {
FILE *f = fopen(fileName.c_str(), "rb");
if (f == NULL) {
printf("LoadWork: Cannot open %s for reading\n", fileName.c_str());
exit(-1);
}
// Read global param
char tmpS[65];
tmpS[64] = 0;
fread(tmpS, 64, 1, f);
initialSeed = string(tmpS);
fread(&this->colSize, sizeof(uint32_t), 1, f);
fread(&this->initDPSize, sizeof(uint32_t), 1, f);
fread(&this->extraPoints, sizeof(bool), 1, f);
fread(&this->offsetCount, sizeof(uint64_t), 1, f);
fread(&this->offsetTime, sizeof(double), 1, f);
// Read random walks state
fread(&this->nbLoadedWalk, sizeof(uint64_t), 1, f);
loadedX = (hash160_t *)malloc(nbLoadedWalk * sizeof(hash160_t));
loadedY = (hash160_t *)malloc(nbLoadedWalk * sizeof(hash160_t));
if (loadedX == NULL || loadedY == NULL) {
printf("LoadWork: Failed to allocate memory !\n");
exit(-1);
}
for (uint64_t n = 0; n < nbLoadedWalk; n++) {
fread(&loadedX[n], sizeof(hash160_t), 1, f);
fread(&loadedY[n], sizeof(hash160_t), 1, f);
}
// Read hash table
hashTable.LoadTable(f);
fclose(f);
fetchedWalk = 0;
// Need to reseed here otherwise we may perform the same work again
string newSeed = Timer::getSeed(32);
seed.SetInt32(0);
sha256((uint8_t *)newSeed.c_str(), (int)newSeed.length(), (uint8_t *)seed.bits64);
printf("LoadWork: %s ok [2^%.2f walks]\n", fileName.c_str(), log2((double)nbLoadedWalk));
}
// ----------------------------------------------------------------------------
void BTCCollider::SaveWork(uint64_t totalCount, double totalTime, TH_PARAM *threads, int nbThread) {
FILE *f = fopen(workFile.c_str(), "wb");
if (f == NULL) {
printf("SaveWork: Cannot open %s for writing\n", workFile.c_str());
return;
}
Lock();
// Wait that all threads blocks before saving works
saveRequest = true;
while (!isWaiting(threads))
Timer::SleepMillis(50);
// Save global param
fwrite(initialSeed.c_str(), 64, 1, f);
fwrite(&colSize, sizeof(uint32_t), 1, f);
fwrite(&dpSize, sizeof(uint32_t), 1, f);
fwrite(&extraPoints, sizeof(bool), 1, f);
fwrite(&totalCount, sizeof(uint64_t), 1, f);
fwrite(&totalTime, sizeof(double), 1, f);
// Save random walks
uint64_t totalWalk = 0;
for (int i = 0; i < nbThread; i++)
totalWalk += threads[i].nbWalk;
fwrite(&totalWalk, sizeof(uint64_t), 1, f);
for (int i = 0; i < nbThread; i++) {
for (uint64_t n = 0; n < threads[i].nbWalk; n++) {
fwrite(&threads[i].x[n], sizeof(hash160_t), 1, f);
fwrite(&threads[i].y[n], sizeof(hash160_t), 1, f);
}
}
// Save hash table
hashTable.SaveTable(f);
fclose(f);
// Unblock threads
saveRequest = false;
Unlock();
char *ctimeBuff;
time_t now = time(NULL);
ctimeBuff = ctime(&now);
printf("\nWork saved: %s", ctimeBuff);
}
// ----------------------------------------------------------------------------
void BTCCollider::FetchWalks(hash160_t *x, hash160_t *y, uint64_t nbWalk) {
for (int n = 0; n < nbWalk; n++) {
if (fetchedWalk < nbLoadedWalk) {
// Fecth a loaded walk
x[n] = loadedX[fetchedWalk];
y[n] = loadedY[fetchedWalk];
fetchedWalk++;
} else {
// New random walk
Rand(&seed, &x[n]);
y[n] = x[n];
}
}
}
// ----------------------------------------------------------------------------
void BTCCollider::Check(std::vector<int> gpuId, std::vector<int> gridSize) {
if(initDPSize<0)
initDPSize = colSize/3;
SetDP(initDPSize);
// Check Int lib
//Int::Check();
// Check SSE and CPU group
hash160_t *x = new hash160_t[CPU_GRP_SIZE];
hash160_t *xc = new hash160_t[CPU_GRP_SIZE];
for (int i = 0; i < CPU_GRP_SIZE; i++) {
Rand(&seed, &x[i]);
xc[i] = x[i];
}
for (int i = 0; i < CPU_GRP_SIZE; i++) {
xc[i] = F(xc[i]);
}
IntGroup *grp = new IntGroup(CPU_GRP_SIZE);
Point *pts = new Point[CPU_GRP_SIZE];
Int *dInv = new Int[CPU_GRP_SIZE];
FGroup(grp, pts, dInv, x);
bool ok = true;
int i = 0;
while (ok && i < CPU_GRP_SIZE) {
ok = (hashTable.compareHash(&x[i], &xc[i]) == 0);
if (ok) i++;
}
if (ok) {
printf("CPU Group OK!\n");
} else {
printf("CPU Group Not OK at %d!\n", i);
printf("Hg=%s\n", GetHex(x[i]).c_str());
printf("Hc=%s\n", GetHex(xc[i]).c_str());
}
#ifdef WITHGPU
// Check gpu
if (useGpu) {
printf("GPU allocate memory:");
int x = gridSize[0];
int y = gridSize[1];
if (!GPUEngine::GetGridSize(gpuId[0], &x, &y)) {
return;
}
GPUEngine h(x,y, gpuId[0], 65536);
printf(" done\n");
printf("GPU: %s\n", h.deviceName.c_str());
printf("GPU: %.1f MB\n", h.GetMemory()/1048576.0);
int nbH = h.GetNbThread() * GPU_GRP_SIZE;
hash160_t *iHash = (hash160_t *)malloc(nbH *sizeof(hash160_t));
for(int i=0;i<nbH;i++)
Rand(&seed, &iHash[i]);
h.SetExtraPoint(extraPoints);
h.SetMasks(colMask,dMask,nbFull);
printf("GPU SetKeys:");
h.SetKeys(pub);
printf(" done\n");
printf("GPU SetStartingHashes:");
if (!h.SetStartingHashes((uint64_t *)iHash, (uint64_t *)iHash)) {
printf(" failed !");
return;
}
printf(" done\n");
HashTable *h1 = new HashTable();
HashTable *h2 = new HashTable();
h1->SetParam(colSize,nbFull,colMask);
h2->SetParam(colSize, nbFull, colMask);
vector<ITEM> hashFound;
h.Launch(hashFound);
for (int i = 0; i < (int)hashFound.size(); i++)
h1->AddHash((hash160_t *)(hashFound[i].h1), (hash160_t *)(hashFound[i].h2));
printf("GPU found %d items\n", h1->GetNbItem());
int nbF=0;
hash160_t *sHash = (hash160_t *)malloc(nbH * sizeof(hash160_t));
memcpy(sHash,iHash, nbH * sizeof(hash160_t));
for (int run = 0; run < NB_RUN; run++) {
for (int i = 0; i < nbH; i++) {
iHash[i] = F(iHash[i]);
if (IsDP(iHash[i])) {
nbF++;
h2->AddHash(&sHash[i],&iHash[i]);
sHash[i] = iHash[i];
}
}
printf("CPU R%d found %d items\n", run, h2->GetNbItem());
}
if( !h1->compare(h2) )
return;
printf("GPU/CPU ok\n");
}
#endif
}
// ----------------------------------------------------------------------------
#ifdef WIN64
THREAD_HANDLE BTCCollider::LaunchThread(LPTHREAD_START_ROUTINE func, TH_PARAM *p) {
p->obj = this;
return CreateThread(NULL, 0, func, (void*)(p), 0, NULL);
}
void BTCCollider::JoinThreads(THREAD_HANDLE *handles,int nbThread) {
WaitForMultipleObjects(nbThread, handles, TRUE, INFINITE);
}
void BTCCollider::FreeHandles(THREAD_HANDLE *handles, int nbThread) {
for (int i = 0; i < nbThread; i++)
CloseHandle(handles[i]);
}
#else
THREAD_HANDLE BTCCollider::LaunchThread(void *(*func) (void *), TH_PARAM *p) {
THREAD_HANDLE h;
p->obj = this;
pthread_create(&h, NULL, func, (void*)(p));
return h;
}
void BTCCollider::JoinThreads(THREAD_HANDLE *handles, int nbThread) {
for (int i = 0; i < nbThread; i++)
pthread_join(handles[i], NULL);
}
void BTCCollider::FreeHandles(THREAD_HANDLE *handles, int nbThread) {
}
#endif
// ----------------------------------------------------------------------------
void BTCCollider::SetDP(int size) {
// Mask for distinguised point
dpSize = size;
if (dpSize == 0) {
dMask = 0;
} else {
if (dpSize > 64) dpSize = 64;
dMask = (1ULL << (64 - dpSize)) - 1;
dMask = ~dMask;
}
#ifdef WIN64
printf("DP size: %d [0x%016I64X]\n", dpSize, dMask);
#else
printf("DP size: %d [0x%" PRIx64 "]\n", dpSize, dMask);
#endif
dMask = _byteswap_uint64(dMask);
}
// ----------------------------------------------------------------------------
void BTCCollider::InitKey(TH_PARAM *p) {
Int k;
Rand(&p->localSeed, &k);
Point sp = secp->ComputePublicKey(&k);
int id = p->threadId;
PUBX(id, 0).Set(&sp.x);
PUBY(id, 0).Set(&sp.y);
priv[id][0].Set(&k);
for (int j = 1; j < 65536; j++) {
k.ModAddK1order(&k,&Kp[id]);
sp = secp->AddDirect(sp,Gp[id]);
PUBX(id, j).Set(&sp.x);
PUBY(id, j).Set(&sp.y);
priv[id][j].Set(&k);
}
}
// ----------------------------------------------------------------------------
void BTCCollider::Rand(Int *seed, Int *i) {
seed->AddOne();
sha256((uint8_t *)seed->bits64,32,(uint8_t *)i->bits64);
i->bits64[4] = 0;
}
void BTCCollider::Rand(Int *seed, hash160_t *i) {
seed->AddOne();
uint8_t digest[32];
sha256((uint8_t *)seed->bits64, 32, digest);
memcpy(i->i8,digest,20);
}
// ----------------------------------------------------------------------------
Int BTCCollider::GetPrivKey(hash160_t x) {
Int k = priv[0][x.i16[0]];
int i;
for (i = 1; i < nbFull; i++)
k.ModAddK1order(&k,&priv[i][x.i16[i]]);
if (colMask)
k.ModAddK1order(&k, &priv[i][x.i16[i] & colMask]);
if (extraPoints) {
hash160_t h;
Int e1;
Int e2;
Point p = secp->ComputePublicKey(&k);
bool yOdd = p.y.IsOdd();
secp->GetCompressedHash160(P2PKH, &p.x, yOdd, h.i8);
if(HASHOK(h)) return k;
secp->GetCompressedHash160(P2PKH, &p.x, !yOdd, h.i8);
if (HASHOK(h)) {
k.Neg();
k.Add(&secp->order);
return k;
}
e1.ModMulK1(&p.x,&beta1);
secp->GetCompressedHash160(P2PKH, &e1, yOdd, h.i8);
if (HASHOK(h)) {
k.ModMulK1order(&lambda1);
return k;
}
secp->GetCompressedHash160(P2PKH, &e1, !yOdd, h.i8);
if (HASHOK(h)) {
k.ModMulK1order(&lambda1);
k.Neg();
k.Add(&secp->order);
return k;
}
e2.ModMulK1(&p.x, &beta2);
secp->GetCompressedHash160(P2PKH, &e2, yOdd, h.i8);
if (HASHOK(h)) {
k.ModMulK1order(&lambda2);
return k;
}
secp->GetCompressedHash160(P2PKH, &e2, !yOdd, h.i8);
if (HASHOK(h)) {
k.ModMulK1order(&lambda2);
k.Neg();
k.Add(&secp->order);
return k;
}
}
return k;
}
// ----------------------------------------------------------------------------
void BTCCollider::AddGroup(IntGroup *grp, hash160_t *x, Point *p1, Int *dx, int i,uint16_t colMask) {
// Affine coord
Int dy;
Int rx;
Int _s;
Int _p;
for (int g = 0; g < CPU_GRP_SIZE; g++) {
uint16_t k = x[g].i16[i] & colMask;
Int *p2x = &PUBX(i,k);
dx[g].ModSub(p2x,&p1[g].x);
}
grp->Set(dx);
grp->ModInv();
for (int g = 0; g < CPU_GRP_SIZE; g++) {
uint16_t k = x[g].i16[i] & colMask;
Int *p2x = &PUBX(i, k);
Int *p2y = &PUBY(i, k);
dy.ModSub(p2y, &p1[g].y);
_s.ModMulK1(&dy, &dx[g]);
_p.ModSquareK1(&_s);
rx.ModSub(&_p, &p1[g].x);
rx.ModSub(p2x);
p1[g].y.ModSub(p2x, &rx);
p1[g].y.ModMulK1(&_s);
p1[g].y.ModSub(p2y);
p1[g].x.Set(&rx);
}
}
// ----------------------------------------------------------------------------
void BTCCollider::FGroup(IntGroup *grp, Point *pts, Int *di, hash160_t *x) {
// Perform x = F(x) for a group
for (int g = 0; g < CPU_GRP_SIZE; g++) {
pts[g].x.Set(&PUBX(0, x[g].i16[0]));
pts[g].y.Set(&PUBY(0, x[g].i16[0]));
#ifndef CPU_AFFINE
pts[g].z.SetInt32(1);
#endif
}
#ifdef CPU_AFFINE
// Affine coordinates
int i;
for (i = 1; i < nbFull; i++)
AddGroup(grp, x, pts, di, i, 0xFFFF);
if (colMask)
AddGroup(grp, x, pts, di, i, colMask);
#else
// Projective coordinates
for (int g = 0; g < CPU_GRP_SIZE; g++) {
int i;
for (i = 1; i < nbFull; i++)
pts[g] = Add(pts[g], i,x[g].i16[i]);
if (colMask)
pts[g] = Add(pts[g], i,x[g].i16[i] & colMask);
di[g].Set(&pts[g].z);
}
grp->Set(di);
grp->ModInv();
for (int g = 0; g < CPU_GRP_SIZE; g++) {
pts[g].x.ModMulK1(&di[g]);
pts[g].y.ModMulK1(&di[g]);
}
#endif
for (int g = 0; g < CPU_GRP_SIZE; g += 4) {
bool o0 = pts[g + 0].y.IsOdd();
bool o1 = pts[g + 1].y.IsOdd();
bool o2 = pts[g + 2].y.IsOdd();
bool o3 = pts[g + 3].y.IsOdd();
secp->GetCompressedHash160(P2PKH,
&pts[g + 0].x, &pts[g + 1].x, &pts[g + 2].x, &pts[g + 3].x,
o0, o1, o2, o3,
x[g].i8, x[g + 1].i8, x[g + 2].i8, x[g + 3].i8);
}
if (extraPoints) {
Int xe1;
Int xe2;
int hOk=0;
for (int g = 0; g < CPU_GRP_SIZE; g++) {
bool yOdd = pts[g].y.IsOdd();
if (!HASHOK(x[g]))
secp->GetCompressedHash160(P2PKH, &pts[g].x, !yOdd, x[g].i8);
else continue;
if (!HASHOK(x[g])) {
xe1.ModMulK1(&pts[g].x, &beta1);
secp->GetCompressedHash160(P2PKH, &xe1, yOdd, x[g].i8);
} else continue;
if (!HASHOK(x[g])) {
secp->GetCompressedHash160(P2PKH, &xe1, !yOdd, x[g].i8);
}
if (!HASHOK(x[g])) {
xe2.ModMulK1(&pts[g].x, &beta2);
secp->GetCompressedHash160(P2PKH, &xe2, yOdd, x[g].i8);
} else continue;
if (!HASHOK(x[g])) {
secp->GetCompressedHash160(P2PKH, &xe2, !yOdd, x[g].i8);
} else continue;
}
}
}
// ----------------------------------------------------------------------------
Point BTCCollider::Add(Point &p1, int n, uint16_t h) {
Int *p2x = &PUBX(n,h);
Int *p2y = &PUBY(n,h);
Int u;
Int v;
Int u1;
Int v1;
Int vs2;
Int vs3;
Int us2;
Int a;
Int us2w;
Int vs2v2;
Int vs3u2;
Int _2vs2v2;
Point r;
u1.ModMulK1(p2y, &p1.z);
v1.ModMulK1(p2x, &p1.z);
u.ModSub(&u1, &p1.y);
v.ModSub(&v1, &p1.x);
us2.ModSquareK1(&u);
vs2.ModSquareK1(&v);
vs3.ModMulK1(&vs2, &v);
us2w.ModMulK1(&us2, &p1.z);
vs2v2.ModMulK1(&vs2, &p1.x);
_2vs2v2.ModAdd(&vs2v2, &vs2v2);
a.ModSub(&us2w, &vs3);
a.ModSub(&_2vs2v2);
r.x.ModMulK1(&v, &a);
vs3u2.ModMulK1(&vs3, &p1.y);
r.y.ModSub(&vs2v2, &a);
r.y.ModMulK1(&r.y, &u);
r.y.ModSub(&vs3u2);
r.z.ModMulK1(&vs3, &p1.z);
return r;
}
// ----------------------------------------------------------------------------
hash160_t BTCCollider::F(hash160_t x) {
Point p;
p.x.Set(&PUBX(0,x.i16[0]));
p.y.Set(&PUBY(0,x.i16[0]));
p.z.SetInt32(1);
int i;
for (i = 1; i < nbFull; i++)
p = Add(p, i,x.i16[i]);
if (colMask)
p = Add(p, i,x.i16[i] & colMask);
p.Reduce();
hash160_t ret;
secp->GetHash160(P2PKH,true,p,ret.i8);
if (extraPoints) {
bool yOdd = p.y.IsOdd();
Int xe1;
Int xe2;
if (!HASHOK(ret))
secp->GetCompressedHash160(P2PKH, &p.x, !yOdd, ret.i8);
if (!HASHOK(ret)) {
xe1.ModMulK1(&p.x, &beta1);
secp->GetCompressedHash160(P2PKH, &xe1, yOdd, ret.i8);
}
if (!HASHOK(ret)) {
secp->GetCompressedHash160(P2PKH, &xe1, !yOdd, ret.i8);
}
if (!HASHOK(ret)) {
xe2.ModMulK1(&p.x, &beta2);
secp->GetCompressedHash160(P2PKH, &xe2, yOdd, ret.i8);
}
if (!HASHOK(ret)) {
secp->GetCompressedHash160(P2PKH, &xe2, !yOdd, ret.i8);
}
}
return ret;
}
// ----------------------------------------------------------------------------
bool BTCCollider::IsDP(hash160_t x) {
return (x.i64[0] & dMask)==0;
}
bool BTCCollider::IsEqual(hash160_t x1, hash160_t x2) {
int i;
for (i = 0; i < nbFull; i++)
if(x1.i16[i]!=x2.i16[i])
return false;
if (colMask) {
if ((x1.i16[i] & colMask) != (x2.i16[i] & colMask))
return false;
}
return true;
}
// ----------------------------------------------------------------------------
#ifdef WIN64
DWORD WINAPI _FindCollisionCPU(LPVOID lpParam) {
#else
void *_FindCollisionCPU(void *lpParam) {
#endif
TH_PARAM *p = (TH_PARAM *)lpParam;
p->obj->FindCollisionCPU(p);
return 0;
}
#ifdef WIN64
DWORD WINAPI _UndistinguishCPU(LPVOID lpParam) {
#else
void *_UndistinguishCPU(void *lpParam) {
#endif
TH_PARAM *p = (TH_PARAM *)lpParam;
p->obj->UndistinguishCPU(p);
return 0;
}
#ifdef WIN64
DWORD WINAPI _FindCollisionGPU(LPVOID lpParam) {
#else
void *_FindCollisionGPU(void *lpParam) {
#endif
TH_PARAM *p = (TH_PARAM *)lpParam;
p->obj->FindCollisionGPU(p);
return 0;
}
// ----------------------------------------------------------------------------
void BTCCollider::Lock() {
#ifdef WIN64
WaitForSingleObject(ghMutex, INFINITE);
#else
pthread_mutex_lock(&ghMutex);
#endif
}
void BTCCollider::Unlock() {
#ifdef WIN64
ReleaseMutex(ghMutex);
#else
pthread_mutex_unlock(&ghMutex);
#endif
}
// ----------------------------------------------------------------------------
void BTCCollider::UndistinguishCPU(TH_PARAM *ph) {
int thId = ph->threadId;
counters[thId] = 0;
hash160_t x = ph->start;
while (!endOfSearch) {
// Replay random walk
hash160_t y = F(x);
while (!endOfSearch && !IsDP(y)) {
y = F(y);
counters[thId]++;
}
Lock();
if (!endOfSearch) {
if (hashTable.AddHash(&x,&y)==COLLISION) {
// Collision found
endOfSearch = true;
//printf("C");
} else {
//printf(".");
}
}
Unlock();
if (IsEqual(y, ph->end)) {
// Reached end of cycle
//printf("S");
return;
}
x = y;
}
}
void BTCCollider::FindCollisionCPU(TH_PARAM *ph) {
int thId = ph->threadId;
counters[thId] = 0;
ph->hasStarted = true;
IntGroup *grp = new IntGroup(CPU_GRP_SIZE);
Point *pts = new Point[CPU_GRP_SIZE];
Int *dInv = new Int[CPU_GRP_SIZE];
while (!endOfSearch) {
// Random walk
FGroup(grp,pts,dInv,ph->y);
if (saveRequest) {
ph->isWaiting = true;
Lock();
ph->isWaiting = false;
Unlock();
}
if (!endOfSearch) {
counters[thId] += CPU_GRP_SIZE;
for (int g = 0; g < CPU_GRP_SIZE; g++) {
if (IsDP(ph->y[g])) {
Lock();
if (!endOfSearch) {
int cStatus = hashTable.AddHash(&ph->x[g], &ph->y[g]);
switch (cStatus) {
case COLLISION:
endOfSearch = true;
break;
case FALSE_COLLISION:
// Reset bad random walk
Rand(&ph->localSeed, &ph->y[g]);
break;
}
}
Unlock();
ph->x[g] = ph->y[g];
}
}
}
}
delete[] pts;
delete[] dInv;
delete grp;
ph->isRunning = false;
}
// ----------------------------------------------------------------------------
void BTCCollider::FindCollisionGPU(TH_PARAM *ph) {
bool ok = true;
#ifdef WITHGPU
int thId = ph->threadId;
counters[thId] = 0;
ph->gpu = new GPUEngine(ph->gridSizeX, ph->gridSizeY, ph->gpuId, 65536*2);
printf("GPU: %s (%.1f MB used)\n", ph->gpu->deviceName.c_str(), ph->gpu->GetMemory() / 1048576.0);
int nbH = ph->gpu->GetNbThread() * GPU_GRP_SIZE;
// Set up GPU
ph->gpu->SetExtraPoint(extraPoints);
ph->gpu->SetMasks(colMask, dMask, nbFull);
ph->gpu->SetKeys(pub);
if (!ph->gpu->SetStartingHashes((uint64_t *)ph->x,(uint64_t *)ph->y)) {
printf("SetStartingHashes failed !");
delete ph->gpu;
return;
}
ph->hasStarted = true;
vector<ITEM> hashFound;
while(!endOfSearch) {
ph->gpu->Launch(hashFound);
counters[thId] += nbH * NB_RUN;
if (saveRequest) {
// We need to retrieve hashes from device memory
if (!ph->gpu->GetHashes((uint64_t *)ph->x, (uint64_t *)ph->y))
printf("\nWarning, cannot retrieve GPU state !\n");
ph->isWaiting = true;