Quote from: nomachine on Today at 01:44:23 PM

Quote from: Akito S. M. Hosana on Today at 12:56:20 PM

Quote from: nomachine on Today at 09:33:27 AM

you can speed up this Python code 100 times in Cyclone.

How do you think prefixes can be generated in Cyclone?

There is already a search in the script using AVX2 instructions to compare two 128-bit values.
However, the search focus on the last 4 bytes of the hashes rather than just the beginning.

Code:

// 8 keys are ready - time to use avx2
   if (localBatchCount == HASH_BATCH_SIZE) {
   computeHash160BatchBinSingle(localBatchCount, localPubKeys, localHashResults);
   // Results check
   for (int j = 0; j < HASH_BATCH_SIZE; j++) {
   __m128i cand16 = _mm_loadu_si128(reinterpret_cast<const __m128i*>(localHashResults[j]));
   __m128i cmp = _mm_cmpeq_epi8(cand16, target16);
   if (_mm_movemask_epi8(cmp) == 0xFFFF) {
   // Checking last 4 bytes (20 - 16)

A Bitcoin address is derived from a RIPEMD-160 hash (20 bytes).
To match 1MVDYgVaSN, you need to match the first 10 bytes.

Code:

// Modify the comparison logic to check only the first 10 bytes
if ((_mm_movemask_epi8(cmp) & 0x03FF) == 0x03FF) {
   // Check the first 10 bytes of the hash160 result
   if (!matchFound && std::memcmp(localHashResults[j], targetHash160.data(), 10) == 0) {
   #pragma omp critical
   {
   if (!matchFound) {
   matchFound = true;
   auto tEndTime = std::chrono::high_resolution_clock::now();
   globalElapsedTime = std::chrono::duration<double>(tEndTime - tStart).count();
   mkeysPerSec = (double)(globalComparedCount + localComparedCount) / globalElapsedTime / 1e6;

   // Recovering private key
   Int matchingPrivateKey;
   matchingPrivateKey.Set(&currentBatchKey);
   int idx = pointIndices[j];
   if (idx < 256) {
   Int offset; offset.SetInt32(idx);
   matchingPrivateKey.Add(&offset);
   } else {
   Int offset; offset.SetInt32(idx - 256);
   matchingPrivateKey.Sub(&offset);
   }
   foundPrivateKeyHex = padHexTo64(intToHex(matchingPrivateKey));

   // Print the partial match and private key
   std::string first10(reinterpret_cast<char*>(localHashResults[j]), 10);
   std::cout << "Partial Match Found! First 10 bytes: " << first10 << "\n";
   std::cout << "Private Key: " << foundPrivateKeyHex << "\n";
   }
   }
   #pragma omp cancel parallel
   }
   localComparedCount++;
} else {
   localComparedCount++;
}

Something like this, but I don't believe in prefixes anymore either. I did that in the beginning, and I don't even know what I haven't tried. The pattern doesn't exist. This is just useless fun....

Can you help me for these function i write and compiled it in same repo but not working properly

Modified_Cyclone.exe -a 1FRoHA9xewq7DjrZ1psWJVeTer8gHRqEvR -r 1:ffffffff --prefix 1MVD --stride ff -O found.txt

================= WORK IN PROGRESS =================
Target Address: 1FRoHA9xewq7DjrZ1psWJVeTer8gHRqEvR
CPU Threads   : 6
Mkeys/s       : 24.12
Total Checked : 1447131648
Elapsed Time  : 00:01:00
Range         : 1:ffffffff
Progress      : 33.6937 %
Progress Save : 0
================== FOUND MATCH! ==================
Private Key   : 00000000000000000000000000000000000000000000000000000000B862A62E
Public Key    : 0209C58240E50E3BA3F833C82655E8725C037A2294E14CF5D73A5DF8D56159DE69
WIF           : KwDiBf89QgGbjEhKnhXJuH7LrciVrZi3qYjgd9MACNivtz8yMYTd
P2PKH Address : 1FRoHA9xewq7DjrZ1psWJVeTer8gHRqEvR
Total Checked : 1487326208
Elapsed Time  : 00:01:01
Speed         : 23.4595 Mkeys/s

Here my modification

Code:

#include <immintrin.h>
#include <iostream>
#include <iomanip>
#include <string>
#include <cstring>
#include <chrono>
#include <vector>
#include <sstream>
#include <stdexcept>
#include <algorithm>
#include <fstream>
#include <omp.h>
#include <array>
#include <utility>
#include "p2pkh_decoder.h"
#include "sha256_avx2.h"
#include "ripemd160_avx2.h"
#include "SECP256K1.h"
#include "Point.h"
#include "Int.h"
#include "IntGroup.h"

// Batch size: ±256 public keys (512), hashed in groups of 8 (AVX2).
static constexpr int POINTS_BATCH_SIZE = 256;
static constexpr int HASH_BATCH_SIZE = 8;

// Status output and progress saving frequency
static constexpr double statusIntervalSec = 5.0;
static constexpr double saveProgressIntervalSec = 300.0;

static int g_progressSaveCount = 0;
static std::vector<std::string> g_threadPrivateKeys;

//------------------------------------------------------------------------------
void saveProgressToFile(const std::string &progressStr) {
std::ofstream ofs("progress.txt", std::ios::app);
if (ofs) {
ofs << progressStr << "\n";
} else {
std::cerr << "Cannot open progress.txt for writing\n";
}
}

//------------------------------------------------------------------------------
//Converts a HEX string into a large number (a vector of 64-bit words, little-endian).

std::vector<uint64_t> hexToBigNum(const std::string& hex) {
std::vector<uint64_t> bigNum;
const size_t len = hex.size();
bigNum.reserve((len + 15) / 16);
for (size_t i = 0; i < len; i += 16) {
size_t start = (len >= 16 + i) ? len - 16 - i : 0;
size_t partLen = (len >= 16 + i) ? 16 : (len - i);
uint64_t value = std::stoull(hex.substr(start, partLen), nullptr, 16);
bigNum.push_back(value);
}
return bigNum;
}

//Reverse conversion to a HEX string (with correct leading zeros within blocks).

std::string bigNumToHex(const std::vector<uint64_t>& num) {
std::ostringstream oss;
for (auto it = num.rbegin(); it != num.rend(); ++it) {
if (it != num.rbegin())
oss << std::setw(16) << std::setfill('0');
oss << std::hex << *it;
}
return oss.str();
}

std::vector<uint64_t> singleElementVector(uint64_t val) {
return { val };
}

std::vector<uint64_t> bigNumAdd(const std::vector<uint64_t>& a, const std::vector<uint64_t>& b) {
std::vector<uint64_t> sum;
sum.reserve(std::max(a.size(), b.size()) + 1);
uint64_t carry = 0;
for (size_t i = 0, sz = std::max(a.size(), b.size()); i < sz; ++i) {
uint64_t x = (i < a.size()) ? a[i] : 0ULL;
uint64_t y = (i < b.size()) ? b[i] : 0ULL;
__uint128_t s = ( __uint128_t )x + ( __uint128_t )y + carry;
carry = (uint64_t)(s >> 64);
sum.push_back((uint64_t)s);
}
if (carry) sum.push_back(carry);
return sum;
}

std::vector<uint64_t> bigNumSubtract(const std::vector<uint64_t>& a, const std::vector<uint64_t>& b) {
std::vector<uint64_t> diff = a;
uint64_t borrow = 0;
for (size_t i = 0; i < b.size(); ++i) {
uint64_t subtrahend = b[i];
if (diff[i] < subtrahend + borrow) {
diff[i] = diff[i] + (~0ULL) - subtrahend - borrow + 1ULL; // eqv diff[i] = diff[i] - subtrahend - borrow
borrow = 1ULL;
} else {
diff[i] -= (subtrahend + borrow);
borrow = 0ULL;
}
}

for (size_t i = b.size(); i < diff.size() && borrow; ++i) {
if (diff[i] == 0ULL) {
diff[i] = ~0ULL;
} else {
diff[i] -= 1ULL;
borrow = 0ULL;
}
}
// delete leading zeros
while (!diff.empty() && diff.back() == 0ULL)
diff.pop_back();
return diff;
}

std::pair<std::vector<uint64_t>, uint64_t> bigNumDivide(const std::vector<uint64_t>& a, uint64_t divisor) {
std::vector<uint64_t> quotient(a.size(), 0ULL);
uint64_t remainder = 0ULL;
for (int i = (int)a.size() - 1; i >= 0; --i) {
__uint128_t temp = ((__uint128_t)remainder << 64) | a[i];
uint64_t q = (uint64_t)(temp / divisor);
uint64_t r = (uint64_t)(temp % divisor);
quotient[i] = q;
remainder = r;
}
while (!quotient.empty() && quotient.back() == 0ULL)
quotient.pop_back();
return { quotient, remainder };
}

long double hexStrToLongDouble(const std::string &hex) {
long double result = 0.0L;
for (char c : hex) {
result *= 16.0L;
if (c >= '0' && c <= '9')
result += (c - '0');
else if (c >= 'a' && c <= 'f')
result += (c - 'a' + 10);
else if (c >= 'A' && c <= 'F')
result += (c - 'A' + 10);
}
return result;
}

//------------------------------------------------------------------------------
static inline std::string padHexTo64(const std::string &hex) {
return (hex.size() >= 64) ? hex : std::string(64 - hex.size(), '0') + hex;
}
static inline Int hexToInt(const std::string &hex) {
Int number;
char buf[65] = {0};
std::strncpy(buf, hex.c_str(), 64);
number.SetBase16(buf);
return number;
}
static inline std::string intToHex(const Int &value) {
Int temp;
temp.Set((Int*)&value);
return temp.GetBase16();
}
static inline bool intGreater(const Int &a, const Int &b) {
std::string ha = ((Int&)a).GetBase16();
std::string hb = ((Int&)b).GetBase16();
if (ha.size() != hb.size()) return (ha.size() > hb.size());
return (ha > hb);
}
static inline bool isEven(const Int &number) {
return ((Int&)number).IsEven();
}

static inline std::string intXToHex64(const Int &x) {
Int temp;
temp.Set((Int*)&x);
std::string hex = temp.GetBase16();
if (hex.size() < 64)
hex.insert(0, 64 - hex.size(), '0');
return hex;
}

static inline std::string pointToCompressedHex(const Point &point) {
return (isEven(point.y) ? "02" : "03") + intXToHex64(point.x);
}
static inline void pointToCompressedBin(const Point &point, uint8_t outCompressed[33]) {
outCompressed[0] = isEven(point.y) ? 0x02 : 0x03;
Int temp;
temp.Set((Int*)&point.x);
for (int i = 0; i < 32; i++) {
outCompressed[1 + i] = (uint8_t)temp.GetByte(31 - i);
}
}

//------------------------------------------------------------------------------
inline void prepareShaBlock(const uint8_t* dataSrc, size_t dataLen, uint8_t* outBlock) {
std::fill_n(outBlock, 64, 0);
std::memcpy(outBlock, dataSrc, dataLen);
outBlock[dataLen] = 0x80;
const uint32_t bitLen = (uint32_t)(dataLen * 8);
outBlock[60] = (uint8_t)((bitLen >> 24) & 0xFF);
outBlock[61] = (uint8_t)((bitLen >> 16) & 0xFF);
outBlock[62] = (uint8_t)((bitLen >> 8) & 0xFF);
outBlock[63] = (uint8_t)( bitLen & 0xFF);
}
inline void prepareRipemdBlock(const uint8_t* dataSrc, uint8_t* outBlock) {
std::fill_n(outBlock, 64, 0);
std::memcpy(outBlock, dataSrc, 32);
outBlock[32] = 0x80;
const uint32_t bitLen = 256;
outBlock[60] = (uint8_t)((bitLen >> 24) & 0xFF);
outBlock[61] = (uint8_t)((bitLen >> 16) & 0xFF);
outBlock[62] = (uint8_t)((bitLen >> 8) & 0xFF);
outBlock[63] = (uint8_t)( bitLen & 0xFF);
}

// Computing hash160 using avx2 (8 hashes per try)
static void computeHash160BatchBinSingle(int numKeys,
uint8_t pubKeys[][33],
uint8_t hashResults[][20])
{
std::array<std::array<uint8_t, 64>, HASH_BATCH_SIZE> shaInputs;
std::array<std::array<uint8_t, 32>, HASH_BATCH_SIZE> shaOutputs;
std::array<std::array<uint8_t, 64>, HASH_BATCH_SIZE> ripemdInputs;
std::array<std::array<uint8_t, 20>, HASH_BATCH_SIZE> ripemdOutputs;

const size_t totalBatches = (numKeys + (HASH_BATCH_SIZE - 1)) / HASH_BATCH_SIZE;
for (size_t batch = 0; batch < totalBatches; batch++) {
const size_t batchCount = std::min<size_t>(HASH_BATCH_SIZE, numKeys - batch * HASH_BATCH_SIZE);
for (size_t i = 0; i < batchCount; i++) {
const size_t idx = batch * HASH_BATCH_SIZE + i;
prepareShaBlock(pubKeys[idx], 33, shaInputs[i].data());
}
for (size_t i = batchCount; i < HASH_BATCH_SIZE; i++) {
std::memcpy(shaInputs[i].data(), shaInputs[0].data(), 64);
}
const uint8_t* inPtr[HASH_BATCH_SIZE];
uint8_t* outPtr[HASH_BATCH_SIZE];
for (int i = 0; i < HASH_BATCH_SIZE; i++) {
inPtr[i] = shaInputs[i].data();
outPtr[i] = shaOutputs[i].data();
}
// SHA256 (avx2)
sha256avx2_8B(inPtr[0], inPtr[1], inPtr[2], inPtr[3],
inPtr[4], inPtr[5], inPtr[6], inPtr[7],
outPtr[0], outPtr[1], outPtr[2], outPtr[3],
outPtr[4], outPtr[5], outPtr[6], outPtr[7]);

// Preparing Ripemd160
for (size_t i = 0; i < batchCount; i++) {
prepareRipemdBlock(shaOutputs[i].data(), ripemdInputs[i].data());
}
for (size_t i = batchCount; i < HASH_BATCH_SIZE; i++) {
std::memcpy(ripemdInputs[i].data(), ripemdInputs[0].data(), 64);
}
for (int i = 0; i < HASH_BATCH_SIZE; i++) {
inPtr[i] = ripemdInputs[i].data();
outPtr[i] = ripemdOutputs[i].data();
}
// Ripemd160 (avx2)
ripemd160avx2::ripemd160avx2_32(
(unsigned char*)inPtr[0],
(unsigned char*)inPtr[1],
(unsigned char*)inPtr[2],
(unsigned char*)inPtr[3],
(unsigned char*)inPtr[4],
(unsigned char*)inPtr[5],
(unsigned char*)inPtr[6],
(unsigned char*)inPtr[7],
outPtr[0], outPtr[1], outPtr[2], outPtr[3],
outPtr[4], outPtr[5], outPtr[6], outPtr[7]
);
for (size_t i = 0; i < batchCount; i++) {
const size_t idx = batch * HASH_BATCH_SIZE + i;
std::memcpy(hashResults[idx], ripemdOutputs[i].data(), 20);
}
}
}

//------------------------------------------------------------------------------
static void printUsage(const char* programName) {
std::cerr << "Usage: " << programName << " -a <Base58_P2PKH> -r <START:END> [--prefix <prefix>] [--stride <stride>] [-O <output_file>]\n";
}

static std::string formatElapsedTime(double seconds) {
int hrs = (int)seconds / 3600;
int mins = ((int)seconds % 3600) / 60;
int secs = (int)seconds % 60;
std::ostringstream oss;
oss << std::setw(2) << std::setfill('0') << hrs << ":"
<< std::setw(2) << std::setfill('0') << mins << ":"
<< std::setw(2) << std::setfill('0') << secs;
return oss.str();
}

//------------------------------------------------------------------------------
static void printStatsBlock(int numCPUs, const std::string &targetAddr,
const std::string &rangeStr, double mkeysPerSec,
unsigned long long totalChecked, double elapsedTime,
int progressSaves, long double progressPercent)
{
static bool firstPrint = true;
if (!firstPrint) {
std::cout << "\033[9A";
} else {
firstPrint = false;
}
std::cout << "================= WORK IN PROGRESS =================\n";
std::cout << "Target Address: " << targetAddr << "\n";
std::cout << "CPU Threads : " << numCPUs << "\n";
std::cout << "Mkeys/s : " << std::fixed << std::setprecision(2) << mkeysPerSec << "\n";
std::cout << "Total Checked : " << totalChecked << "\n";
std::cout << "Elapsed Time : " << formatElapsedTime(elapsedTime) << "\n";
std::cout << "Range : " << rangeStr << "\n";
std::cout << "Progress : " << std::fixed << std::setprecision(4) << progressPercent << " %\n";
std::cout << "Progress Save : " << progressSaves << "\n";
std::cout.flush();
}

//------------------------------------------------------------------------------
struct ThreadRange {
std::string startHex;
std::string endHex;
};

static std::vector<ThreadRange> g_threadRanges;

//------------------------------------------------------------------------------
int main(int argc, char* argv[])
{
bool addressProvided = false, rangeProvided = false;
std::string targetAddress, rangeInput;
std::vector<uint8_t> targetHash160;
std::string prefixFilter;
uint64_t stride = 1;
std::string outputFile;

for (int i = 1; i < argc; i++) {
if (!std::strcmp(argv[i], "-a") && i + 1 < argc) {
targetAddress = argv[++i];
addressProvided = true;
try {
targetHash160 = P2PKHDecoder::getHash160(targetAddress);
if (targetHash160.size() != 20)
throw std::invalid_argument("Invalid hash160 length.");
} catch (const std::exception &ex) {
std::cerr << "Error parsing address: " << ex.what() << "\n";
return 1;
}
} else if (!std::strcmp(argv[i], "-r") && i + 1 < argc) {
rangeInput = argv[++i];
rangeProvided = true;
} else if (!std::strcmp(argv[i], "--prefix") && i + 1 < argc) {
prefixFilter = argv[++i];
} else if (!std::strcmp(argv[i], "--stride") && i + 1 < argc) {
stride = std::stoull(argv[++i], nullptr, 16);
} else if (!std::strcmp(argv[i], "-O") && i + 1 < argc) {
outputFile = argv[++i];
} else {
std::cerr << "Unknown parameter: " << argv[i] << "\n";
printUsage(argv[0]);
return 1;
}
}
if (!addressProvided || !rangeProvided) {
std::cerr << "Both -a <Base58_P2PKH> and -r <START:END> are required!\n";
printUsage(argv[0]);
return 1;
}

const size_t colonPos = rangeInput.find(':');
if (colonPos == std::string::npos) {
std::cerr << "Invalid range format. Use <START:END> in HEX.\n";
return 1;
}
const std::string rangeStartHex = rangeInput.substr(0, colonPos);
const std::string rangeEndHex = rangeInput.substr(colonPos + 1);

auto rangeStart = hexToBigNum(rangeStartHex);
auto rangeEnd = hexToBigNum(rangeEndHex);

bool validRange = false;
if (rangeStart.size() < rangeEnd.size()) {
validRange = true;
} else if (rangeStart.size() > rangeEnd.size()) {
validRange = false;
} else {
validRange = true;
for (int i = (int)rangeStart.size() - 1; i >= 0; --i) {
if (rangeStart[i] < rangeEnd[i]) {
break;
} else if (rangeStart[i] > rangeEnd[i]) {
validRange = false;
break;
}
}
}
if (!validRange) {
std::cerr << "Range start must be <= range end.\n";
return 1;
}

auto rangeSize = bigNumSubtract(rangeEnd, rangeStart);
rangeSize = bigNumAdd(rangeSize, singleElementVector(1ULL));

const std::string rangeSizeHex = bigNumToHex(rangeSize);

const long double totalRangeLD = hexStrToLongDouble(rangeSizeHex);

const int numCPUs = omp_get_num_procs();
g_threadPrivateKeys.resize(numCPUs, "0");

auto [chunkSize, remainder] = bigNumDivide(rangeSize, (uint64_t)numCPUs);
g_threadRanges.resize(numCPUs);

std::vector<uint64_t> currentStart = rangeStart;
for (int t = 0; t < numCPUs; t++) {
auto currentEnd = bigNumAdd(currentStart, chunkSize);
if (t < (int)remainder) {
currentEnd = bigNumAdd(currentEnd, singleElementVector(1ULL));
}
currentEnd = bigNumSubtract(currentEnd, singleElementVector(1ULL));

g_threadRanges[t].startHex = bigNumToHex(currentStart);
g_threadRanges[t].endHex = bigNumToHex(currentEnd);

currentStart = bigNumAdd(currentEnd, singleElementVector(1ULL));
}
const std::string displayRange = g_threadRanges.front().startHex + ":" + g_threadRanges.back().endHex;

unsigned long long globalComparedCount = 0ULL;
double globalElapsedTime = 0.0;
double mkeysPerSec = 0.0;

const auto tStart = std::chrono::high_resolution_clock::now();
auto lastStatusTime = tStart;
auto lastSaveTime = tStart;

bool matchFound = false;
std::string foundPrivateKeyHex, foundPublicKeyHex, foundWIF;

Secp256K1 secp;
secp.Init();

// PARRALEL COMPUTING BLOCK
#pragma omp parallel num_threads(numCPUs) \
shared(globalComparedCount, globalElapsedTime, mkeysPerSec, matchFound, \
foundPrivateKeyHex, foundPublicKeyHex, foundWIF, \
tStart, lastStatusTime, lastSaveTime, g_progressSaveCount, \
g_threadPrivateKeys)
{
const int threadId = omp_get_thread_num();

Int privateKey = hexToInt(g_threadRanges[threadId].startHex);
const Int threadRangeEnd = hexToInt(g_threadRanges[threadId].endHex);

#pragma omp critical
{
g_threadPrivateKeys[threadId] = padHexTo64(intToHex(privateKey));
}

// Precomputing +i*G and -i*G for i=0..255
std::vector<Point> plusPoints(POINTS_BATCH_SIZE);
std::vector<Point> minusPoints(POINTS_BATCH_SIZE);
for (int i = 0; i < POINTS_BATCH_SIZE; i++) {
Int tmp; tmp.SetInt32(i);
Point p = secp.ComputePublicKey(&tmp);
plusPoints[i] = p;
p.y.ModNeg();
minusPoints[i] = p;
}

// Arrays for batch-adding
std::vector<Int> deltaX(POINTS_BATCH_SIZE);
IntGroup modGroup(POINTS_BATCH_SIZE);

// Save 512 publickeys
const int fullBatchSize = 2 * POINTS_BATCH_SIZE;
std::vector<Point> pointBatch(fullBatchSize);

// Buffers for hashing
uint8_t localPubKeys[fullBatchSize][33];
uint8_t localHashResults[HASH_BATCH_SIZE][20];
int localBatchCount = 0;
int pointIndices[HASH_BATCH_SIZE];

// Local count
unsigned long long localComparedCount = 0ULL;

// Download the target (hash160) в __m128i for fast compare
__m128i target16 = _mm_loadu_si128(reinterpret_cast<const __m128i*>(targetHash160.data()));

// main
while (true) {
if (intGreater(privateKey, threadRangeEnd)) {
break;
}
// startPoint = privateKey * G
Int currentBatchKey;
currentBatchKey.Set(&privateKey);
Point startPoint = secp.ComputePublicKey(&currentBatchKey);

#pragma omp critical
{
g_threadPrivateKeys[threadId] = padHexTo64(intToHex(privateKey));
}

// Divide the batch of 512 keys into 2 blocks of 256 keys, count +256 and -256 from the center G-point of the batch
// First pointBatch[0..255] +
for (int i = 0; i < POINTS_BATCH_SIZE; i++) {
deltaX[i].ModSub(&plusPoints[i].x, &startPoint.x);
}
modGroup.Set(deltaX.data());
modGroup.ModInv();
for (int i = 0; i < POINTS_BATCH_SIZE; i++) {
Point tempPoint = startPoint;
Int deltaY;
deltaY.ModSub(&plusPoints[i].y, &startPoint.y);
Int slope;
slope.ModMulK1(&deltaY, &deltaX[i]);
Int slopeSq;
slopeSq.ModSquareK1(&slope);

Int tmpX;
tmpX.Set(&startPoint.x);
tmpX.ModNeg();
tmpX.ModAdd(&slopeSq);
tmpX.ModSub(&plusPoints[i].x);
tempPoint.x.Set(&tmpX);

Int diffX;
diffX.Set(&startPoint.x);
diffX.ModSub(&tempPoint.x);
diffX.ModMulK1(&slope);
tempPoint.y.ModNeg();
tempPoint.y.ModAdd(&diffX);

pointBatch[i] = tempPoint;
}

// Second pointBatch[256..511] -
for (int i = 0; i < POINTS_BATCH_SIZE; i++) {
Point tempPoint = startPoint;
Int deltaY;
deltaY.ModSub(&minusPoints[i].y, &startPoint.y);
Int slope;
slope.ModMulK1(&deltaY, &deltaX[i]);
Int slopeSq;
slopeSq.ModSquareK1(&slope);

Int tmpX;
tmpX.Set(&startPoint.x);
tmpX.ModNeg();
tmpX.ModAdd(&slopeSq);
tmpX.ModSub(&minusPoints[i].x);
tempPoint.x.Set(&tmpX);

Int diffX;
diffX.Set(&startPoint.x);
diffX.ModSub(&tempPoint.x);
diffX.ModMulK1(&slope);
tempPoint.y.ModNeg();
tempPoint.y.ModAdd(&diffX);

pointBatch[POINTS_BATCH_SIZE + i] = tempPoint;
}

// Construct local buffeer
for (int i = 0; i < fullBatchSize; i++) {
pointToCompressedBin(pointBatch[i], localPubKeys[localBatchCount]);
pointIndices[localBatchCount] = i;
localBatchCount++;

// 8 keys are ready - time to use avx2
if (localBatchCount == HASH_BATCH_SIZE) {
computeHash160BatchBinSingle(localBatchCount, localPubKeys, localHashResults);
// Results check
for (int j = 0; j < HASH_BATCH_SIZE; j++) {
__m128i cand16 = _mm_loadu_si128(reinterpret_cast<const __m128i*>(localHashResults[j]));
__m128i cmp = _mm_cmpeq_epi8(cand16, target16);
if (_mm_movemask_epi8(cmp) == 0xFFFF) {
// Checking last 4 bytes (20 - 16)
if (!matchFound && std::memcmp(localHashResults[j], targetHash160.data(), 20) == 0) {
#pragma omp critical
{
if (!matchFound) {
matchFound = true;
auto tEndTime = std::chrono::high_resolution_clock::now();
globalElapsedTime = std::chrono::duration<double>(tEndTime - tStart).count();
mkeysPerSec = (double)(globalComparedCount + localComparedCount) / globalElapsedTime / 1e6;

// Recovering private key
Int matchingPrivateKey;
matchingPrivateKey.Set(&currentBatchKey);
int idx = pointIndices[j];
if (idx < 256) {
Int offset; offset.SetInt32(idx);
matchingPrivateKey.Add(&offset);
} else {
Int offset; offset.SetInt32(idx - 256);
matchingPrivateKey.Sub(&offset);
}
foundPrivateKeyHex = padHexTo64(intToHex(matchingPrivateKey));
Point matchedPoint = pointBatch[idx];
foundPublicKeyHex = pointToCompressedHex(matchedPoint);
foundWIF = P2PKHDecoder::compute_wif(foundPrivateKeyHex, true);
}
}
#pragma omp cancel parallel
}
localComparedCount++;
} else {
localComparedCount++;
}
}
localBatchCount = 0;
}
}

// Next step
{
Int step;
step.SetInt32(fullBatchSize - 2); // 510
privateKey.Add(&step);
}

// Time to show status
auto now = std::chrono::high_resolution_clock::now();
double secondsSinceStatus = std::chrono::duration<double>(now - lastStatusTime).count();
if (secondsSinceStatus >= statusIntervalSec) {
#pragma omp critical
{
globalComparedCount += localComparedCount;
localComparedCount = 0ULL;
globalElapsedTime = std::chrono::duration<double>(now - tStart).count();
mkeysPerSec = (double)globalComparedCount / globalElapsedTime / 1e6;

long double progressPercent = 0.0L;
if (totalRangeLD > 0.0L) {
progressPercent = ((long double)globalComparedCount / totalRangeLD) * 100.0L;
}
printStatsBlock(numCPUs, targetAddress, displayRange,
mkeysPerSec, globalComparedCount,
globalElapsedTime, g_progressSaveCount,
progressPercent);
lastStatusTime = now;
}
}

// Save progress periodically
auto nowSave = std::chrono::high_resolution_clock::now();
double secondsSinceSave = std::chrono::duration<double>(nowSave - lastSaveTime).count();
if (secondsSinceSave >= saveProgressIntervalSec) {
#pragma omp critical
{
if (threadId == 0) {
g_progressSaveCount++;
std::ostringstream oss;
oss << "Progress Save #" << g_progressSaveCount << " at "
<< std::chrono::duration<double>(nowSave - tStart).count() << " sec: "
<< "TotalChecked=" << globalComparedCount << ", "
<< "ElapsedTime=" << formatElapsedTime(globalElapsedTime) << ", "
<< "Mkeys/s=" << std::fixed << std::setprecision(2) << mkeysPerSec << "\n";
for (int k = 0; k < numCPUs; k++) {
oss << "Thread Key " << k << ": " << g_threadPrivateKeys[k] << "\n";
}
saveProgressToFile(oss.str());
lastSaveTime = nowSave;
}
}
}

if (matchFound) {
break;
}
} // while(true)

// Adding local count
#pragma omp atomic
globalComparedCount += localComparedCount;
} // end of parralel section

// Main results
auto tEnd = std::chrono::high_resolution_clock::now();
globalElapsedTime = std::chrono::duration<double>(tEnd - tStart).count();

if (!matchFound) {
mkeysPerSec = (double)globalComparedCount / globalElapsedTime / 1e6;
std::cout << "\nNo match found.\n";
std::cout << "Total Checked : " << globalComparedCount << "\n";
std::cout << "Elapsed Time : " << formatElapsedTime(globalElapsedTime) << "\n";
std::cout << "Speed : " << mkeysPerSec << " Mkeys/s\n";
return 0;
}

// If the key was found
std::cout << "================== FOUND MATCH! ==================\n";
std::cout << "Private Key : " << foundPrivateKeyHex << "\n";
std::cout << "Public Key : " << foundPublicKeyHex << "\n";
std::cout << "WIF : " << foundWIF << "\n";
std::cout << "P2PKH Address : " << targetAddress << "\n";
std::cout << "Total Checked : " << globalComparedCount << "\n";
std::cout << "Elapsed Time : " << formatElapsedTime(globalElapsedTime) << "\n";
std::cout << "Speed : " << mkeysPerSec << " Mkeys/s\n";

// Write results to output file if specified
if (!outputFile.empty()) {
std::ofstream ofs(outputFile, std::ios::app); // Open in append mode
if (ofs) {
ofs << "Private Key : " << foundPrivateKeyHex << "\n";
ofs << "Public Key : " << foundPublicKeyHex << "\n";
ofs << "WIF : " << foundWIF << "\n";
ofs << "P2PKH Address : " << targetAddress << "\n";
ofs << "Total Checked : " << globalComparedCount << "\n";
ofs << "Elapsed Time : " << formatElapsedTime(globalElapsedTime) << "\n";
ofs << "Speed : " << mkeysPerSec << " Mkeys/s\n";
} else {
std::cerr << "Cannot open output file for writing\n";
}
}

return 0;
}

Thanks in Advance