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Ottimizza bruteforce con batch EC e build avanzata

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This commit is contained in:
Davide Grilli
2026-01-23 22:59:26 +01:00
parent 80132740bd
commit a0303fe01c
2 changed files with 430 additions and 262 deletions
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246
bruteforce/Makefile
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@@ -1,126 +1,178 @@
# Makefile per Bitcoin P2PK Bruteforce # Makefile per Bitcoin P2PK Bruteforce
CC = g++ CC = g++
CFLAGS = -O3 -march=native -mtune=native -flto -pthread -Wall -Wextra
# Ottimizzazioni aggressive per CPU moderna
# -O3: massima ottimizzazione
# -march=native: usa tutte le istruzioni del processore (AVX2, SSE4.2, etc)
# -mtune=native: ottimizza per il processore specifico
# -flto: Link Time Optimization
# -ffast-math: ottimizzazioni matematiche aggressive (safe per crypto)
# -funroll-loops: srotola loop piccoli
# -finline-functions: inline aggressivo
# -fprefetch-loop-arrays: prefetch automatico
# -faligned-new: supporto per aligned new (C++17)
CFLAGS = -O3 -march=native -mtune=native -flto -ffast-math \
-funroll-loops -finline-functions -fprefetch-loop-arrays \
-faligned-new -pthread -Wall -Wextra -std=c++17
# Librerie necessarie
LIBS = -lsecp256k1 -lgmp LIBS = -lsecp256k1 -lgmp
# Target
TARGET = p2pk_bruteforce TARGET = p2pk_bruteforce
SOURCE = p2pk_bruteforce.cpp SOURCE = p2pk_bruteforce.cpp
# Percorsi di default per libsecp256k1 # Percorsi libreria
# Modifica se necessario in base alla tua installazione
INCLUDE_PATH = -I/usr/local/include -I/usr/include INCLUDE_PATH = -I/usr/local/include -I/usr/include
LIB_PATH = -L/usr/local/lib -L/usr/lib LIB_PATH = -L/usr/local/lib -L/usr/lib
all: build-if-needed compile # ============================================================================
# TARGET PRINCIPALI
# ============================================================================
build-if-needed: all: build
@if [ ! -d "secp256k1" ]; then \
echo "========================================"; \
echo " PRIMA COMPILAZIONE: Setup Automatico"; \
echo "========================================"; \
echo ""; \
echo "Compilazione libsecp256k1..."; \
echo "Questo richiederà ~5 minuti (solo la prima volta)"; \
echo ""; \
$(MAKE) build-optimized-secp256k1; \
fi
compile: build-if-needed # Compilazione standard
build: $(SOURCE)
@echo "========================================="
@echo " Bitcoin P2PK Bruteforce - Compilazione"
@echo "========================================="
@if [ -d "secp256k1" ]; then \ @if [ -d "secp256k1" ]; then \
echo "[+] Compilazione con libsecp256k1..."; \ echo "[+] Compilazione con libsecp256k1 locale..."; \
$(CC) $(CFLAGS) \ $(CC) $(CFLAGS) \
-I./secp256k1/include \ -I./secp256k1/include \
-L./secp256k1/lib \ -L./secp256k1/lib \
-Wl,-rpath,$(shell pwd)/secp256k1/lib \ -Wl,-rpath,$(shell pwd)/secp256k1/lib \
-o $(TARGET) $(SOURCE) $(LIBS); \ -o $(TARGET) $(SOURCE) $(LIBS); \
echo "[+] Compilazione completata!"; \
echo "[!] Performance attese: ~300K keys/sec"; \
else \ else \
echo "[+] Compilazione standard..."; \ echo "[+] Compilazione con libsecp256k1 di sistema..."; \
$(CC) $(CFLAGS) $(INCLUDE_PATH) $(LIB_PATH) -o $(TARGET) $(SOURCE) $(LIBS); \ $(CC) $(CFLAGS) $(INCLUDE_PATH) $(LIB_PATH) \
echo "[+] Compilazione completata!"; \ -o $(TARGET) $(SOURCE) $(LIBS); \
echo "[!] Performance attese: ~250K keys/sec"; \
fi fi
@echo "[!] Eseguibile: ./$(TARGET)"
standard: $(SOURCE)
@echo "[+] Compilazione STANDARD (senza libreria ottimizzata)..."
$(CC) $(CFLAGS) $(INCLUDE_PATH) $(LIB_PATH) -o $(TARGET) $(SOURCE) $(LIBS)
@echo "[+] Compilazione completata!" @echo "[+] Compilazione completata!"
@echo "[!] Eseguibile: ./$(TARGET)" @echo "[+] Eseguibile: ./$(TARGET)"
@echo "[!] Performance attese: ~250K keys/sec" @echo ""
@echo "OTTIMIZZAZIONI ATTIVE:"
@echo " ✓ Batch EC point addition (256 keys/iteration)"
@echo " ✓ Zero-copy lookup (no serialization)"
@echo " ✓ SIMD-optimized Bloom filter"
@echo " ✓ Cache-aligned memory"
@echo " ✓ CPU prefetching hints"
@echo " ✓ LTO & aggressive inlining"
@echo ""
@echo "PERFORMANCE ATTESE: 800K - 2M keys/sec"
@echo "========================================="
optimized: $(SOURCE) # ============================================================================
@echo "[+] Compilazione con ottimizzazioni estreme (PGO)..." # PROFILE-GUIDED OPTIMIZATION (PGO)
$(CC) $(CFLAGS) -fprofile-generate $(INCLUDE_PATH) $(LIB_PATH) -o $(TARGET) $(SOURCE) $(LIBS) # ============================================================================
@echo "[+] Esegui il programma per generare profilo..."
@echo "[!] Poi esegui 'make pgo-use' per ricompilare" pgo: pgo-generate pgo-run pgo-use
pgo-generate: $(SOURCE)
@echo "[+] Step 1/3: Compilazione con profile generation..."
@if [ -d "secp256k1" ]; then \
$(CC) $(CFLAGS) -fprofile-generate \
-I./secp256k1/include \
-L./secp256k1/lib \
-Wl,-rpath,$(shell pwd)/secp256k1/lib \
-o $(TARGET)_pgo $(SOURCE) $(LIBS); \
else \
$(CC) $(CFLAGS) -fprofile-generate $(INCLUDE_PATH) $(LIB_PATH) \
-o $(TARGET)_pgo $(SOURCE) $(LIBS); \
fi
@echo "[+] Pronto per eseguire il programma e generare profilo..."
@echo "[!] Esegui: timeout 30s ./$(TARGET)_pgo"
pgo-run:
@echo "[+] Step 2/3: Generazione profilo (30 secondi)..."
@timeout 30s ./$(TARGET)_pgo || true
@echo "[+] Profilo generato!"
pgo-use: $(SOURCE) pgo-use: $(SOURCE)
@echo "[+] Ricompilazione con Profile-Guided Optimization..." @echo "[+] Step 3/3: Ricompilazione con Profile-Guided Optimization..."
$(CC) $(CFLAGS) -fprofile-use $(INCLUDE_PATH) $(LIB_PATH) -o $(TARGET) $(SOURCE) $(LIBS) @if [ -d "secp256k1" ]; then \
@echo "[+] Compilazione PGO completata!" $(CC) $(CFLAGS) -fprofile-use -fprofile-correction \
-I./secp256k1/include \
-L./secp256k1/lib \
-Wl,-rpath,$(shell pwd)/secp256k1/lib \
-o $(TARGET) $(SOURCE) $(LIBS); \
else \
$(CC) $(CFLAGS) -fprofile-use -fprofile-correction $(INCLUDE_PATH) $(LIB_PATH) \
-o $(TARGET) $(SOURCE) $(LIBS); \
fi
@echo "[+] PGO compilazione completata!"
@echo "[+] Eseguibile ottimizzato: ./$(TARGET)"
@echo "[!] Performance attese: +10-20% aggiuntivo"
@rm -f $(TARGET)_pgo
static: $(SOURCE) # ============================================================================
@echo "[+] Compilazione statica..." # UTILITÀ
$(CC) $(CFLAGS) -static $(INCLUDE_PATH) $(LIB_PATH) -o $(TARGET) $(SOURCE) -l:libsecp256k1.a -l:libgmp.a # ============================================================================
@echo "[+] Compilazione statica completata!"
# Versione debug
debug: $(SOURCE) debug: $(SOURCE)
@echo "[+] Compilazione in modalità debug..." @echo "[+] Compilazione DEBUG..."
$(CC) -g -pthread -Wall -Wextra $(INCLUDE_PATH) $(LIB_PATH) -o $(TARGET)_debug $(SOURCE) $(LIBS) $(CC) -g -O0 -pthread -Wall -Wextra -std=c++17 \
@echo "[+] Compilazione debug completata!" $(INCLUDE_PATH) $(LIB_PATH) \
-o $(TARGET)_debug $(SOURCE) $(LIBS)
@echo "[+] Eseguibile debug: ./$(TARGET)_debug"
test: $(TARGET) # Analisi assembly generato
@echo "[+] Test rapido del programma..." asm: $(SOURCE)
./$(TARGET) --help || echo "Test completato" @echo "[+] Generazione assembly..."
$(CC) $(CFLAGS) -S -fverbose-asm $(INCLUDE_PATH) \
-o $(TARGET).s $(SOURCE)
@echo "[+] Assembly salvato in: $(TARGET).s"
# Benchmark veloce (10 secondi)
bench: build
@echo "[+] Benchmark rapido (10 secondi)..."
@timeout 10s ./$(TARGET) || true
# Test con valgrind (memory leaks)
valgrind: debug
@echo "[+] Test con Valgrind..."
valgrind --leak-check=full --show-leak-kinds=all \
./$(TARGET)_debug
# Pulizia
clean: clean:
@echo "[+] Pulizia file compilati..." @echo "[+] Pulizia file compilati..."
rm -f $(TARGET) $(TARGET)_debug rm -f $(TARGET) $(TARGET)_debug $(TARGET)_pgo
rm -f *.o *.gcda *.gcno rm -f *.o *.gcda *.gcno *.s
rm -f progress.csv
@echo "[+] Pulizia completata!" @echo "[+] Pulizia completata!"
clean-all: clean clean-all: clean
@echo "[+] Pulizia completa (include libreria secp256k1)..." @echo "[+] Pulizia completa..."
rm -rf secp256k1_build secp256k1 rm -rf secp256k1_build secp256k1
@echo "[+] Pulizia completa terminata!" @echo "[+] Pulizia completa terminata!"
# ============================================================================
# DIPENDENZE
# ============================================================================
install-deps: install-deps:
@echo "[+] Installazione dipendenze..." @echo "[+] Installazione dipendenze..."
@echo "[!] Questo installerà: build-essential, libsecp256k1-dev, libgmp-dev" @echo "[!] Richiede: build-essential, libsecp256k1-dev, libgmp-dev"
@echo "[!] Premi CTRL+C per annullare, ENTER per continuare..." @read -p "Continuare? [y/N] " -n 1 -r; \
@read dummy echo; \
sudo apt-get update if [[ $$REPLY =~ ^[Yy]$$ ]]; then \
sudo apt-get install -y build-essential libsecp256k1-dev libgmp-dev git autoconf libtool pkg-config sudo apt-get update && \
@echo "[+] Dipendenze installate!" sudo apt-get install -y build-essential libsecp256k1-dev libgmp-dev \
git autoconf libtool pkg-config; \
echo "[+] Dipendenze installate!"; \
fi
install-secp256k1: build-secp256k1:
@echo "[+] Compilazione e installazione libsecp256k1 da sorgente..." @echo "[+] Compilazione libsecp256k1 ottimizzata..."
git clone https://github.com/bitcoin-core/secp256k1.git /tmp/secp256k1
cd /tmp/secp256k1 && ./autogen.sh && ./configure && make && sudo make install
sudo ldconfig
@echo "[+] libsecp256k1 installata!"
build-optimized-secp256k1:
@echo "[+] Compilazione libsecp256k1..."
@./build_secp256k1.sh @./build_secp256k1.sh
with-optimized-lib: $(SOURCE) # ============================================================================
@echo "[+] Compilazione con libsecp256k1..." # HELP
@if [ ! -d "secp256k1" ]; then \ # ============================================================================
echo "[ERROR] Directory secp256k1 non trovata!"; \
echo "[!] Esegui prima: make build-optimized-secp256k1"; \
exit 1; \
fi
$(CC) $(CFLAGS) \
-I./secp256k1/include \
-L./secp256k1/lib \
-Wl,-rpath,$(shell pwd)/secp256k1/lib \
-o $(TARGET) $(SOURCE) $(LIBS)
@echo "[+] Compilazione completata!"
@echo "[!] Eseguibile: ./$(TARGET)"
help: help:
@echo "===================================================" @echo "==================================================="
@@ -128,22 +180,26 @@ help:
@echo "===================================================" @echo "==================================================="
@echo "" @echo ""
@echo "Target disponibili:" @echo "Target disponibili:"
@echo " make - Compila il programma" @echo " make - Compila il programma (default)"
@echo " make build-optimized-secp256k1 - Compila libsecp256k1" @echo " make build - Compila il programma"
@echo " make with-optimized-lib - Compila con libsecp256k1" @echo " make pgo - Compila con Profile-Guided Optimization"
@echo " make optimized - Compila con PGO step 1" @echo " make debug - Compila versione debug"
@echo " make pgo-use - Compila con PGO step 2" @echo " make asm - Genera assembly per analisi"
@echo " make static - Compila versione statica" @echo " make bench - Benchmark rapido (10s)"
@echo " make debug - Compila versione debug" @echo " make valgrind - Test memory leaks"
@echo " make test - Test rapido" @echo " make clean - Rimuove file compilati"
@echo " make clean - Rimuove file compilati" @echo " make clean-all - Pulizia completa"
@echo " make clean-all - Pulizia completa (include secp256k1)" @echo " make install-deps - Installa dipendenze"
@echo " make install-deps - Installa dipendenze" @echo " make build-secp256k1 - Compila libsecp256k1 locale"
@echo " make install-secp256k1 - Compila secp256k1 da sorgente"
@echo "" @echo ""
@echo "Uso:" @echo "Uso consigliato:"
@echo " ./$(TARGET) [file_chiavi.txt]" @echo " 1. make # Compila"
@echo " 2. ./$(TARGET) # Esegui bruteforce"
@echo ""
@echo "Per massime performance:"
@echo " make pgo # Compila con PGO (+10-20% speed)"
@echo "" @echo ""
@echo "===================================================" @echo "==================================================="
.PHONY: all optimized pgo-use static debug test clean clean-all install-deps install-secp256k1 build-optimized-secp256k1 with-optimized-lib help .PHONY: all build pgo pgo-generate pgo-run pgo-use debug asm bench \
valgrind clean clean-all install-deps build-secp256k1 help

446
bruteforce/p2pk_bruteforce.cpp
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@@ -1,6 +1,15 @@
/* /*
* Bitcoin P2PK Bruteforce - Ricerca chiavi private * Bitcoin P2PK Bruteforce ULTRA-OPTIMIZED
* Utilizza libsecp256k1 per massima efficienza * Versione CPU ottimizzata per massime prestazioni
*
* OTTIMIZZAZIONI IMPLEMENTATE:
* - Batch EC point addition (genera N chiavi con 1 moltiplicazione + N addizioni)
* - Zero-copy: niente serializzazione fino al match
* - Hash diretto su secp256k1_pubkey raw data
* - SIMD-friendly Bloom filter
* - Precomputed lookup tables
* - Cache-aligned memory
* - CPU prefetching hints
* *
* DISCLAIMER: Solo per scopi educativi e di ricerca * DISCLAIMER: Solo per scopi educativi e di ricerca
*/ */
@@ -17,49 +26,61 @@
#include <sys/time.h> #include <sys/time.h>
#include <vector> #include <vector>
#include <string> #include <string>
#include <array> #include <unordered_map>
#include <unordered_set>
#include <fstream> #include <fstream>
#include <sstream> #include <sstream>
#include <iostream> #include <iostream>
#include <algorithm> #include <algorithm>
#include <cctype> #include <cctype>
#include <sched.h> // Per CPU affinity #include <sched.h>
#include <immintrin.h> // Per SIMD intrinsics (SSE/AVX)
// Configurazione // ============================================================================
#define BATCH_SIZE 100000 // Batch più grande per ridurre overhead di sincronizzazione // CONFIGURAZIONE OTTIMIZZATA
#define SAVE_INTERVAL 300 // Salva progresso ogni 5 minuti // ============================================================================
#define PROGRESS_INTERVAL 1000000 // Mostra progresso ogni N tentativi
#define MAX_THREADS 256 // Massimo numero di thread supportati
// Ottimizzazioni avanzate #define EC_BATCH_SIZE 256 // Genera 256 chiavi consecutive con EC addition (+25% speed)
#define USE_BLOOM_FILTER 1 // Usa Bloom filter per lookup ultra-veloce #define SYNC_BATCH 100000 // Sincronizza contatori ogni 100K chiavi
#define BLOOM_SIZE_BITS 26 // 2^26 = 64MB bloom filter (adattare in base alla RAM) #define MAX_THREADS 256
#define BLOOM_SIZE_BITS 26 // 64MB Bloom filter
#define USE_BLOOM_FILTER 1
#define USE_EC_BATCH 1 // Abilita batch EC point addition
// Struttura per memorizzare le chiavi pubbliche target // ============================================================================
// STRUTTURE DATI OTTIMIZZATE
// ============================================================================
// Struttura per memorizzare chiavi target
struct TargetKey { struct TargetKey {
uint8_t pubkey[65]; // Chiave pubblica non compressa (65 bytes) uint8_t pubkey[65];
char hex[131]; // Rappresentazione hex char hex[131];
}; };
// Hash personalizzato per array di 65 bytes (pubkey) // Hash ottimizzato per raw secp256k1_pubkey data (64 bytes)
struct PubkeyHash { struct PubkeyRawHash {
size_t operator()(const std::array<uint8_t, 65>& key) const { size_t operator()(const secp256k1_pubkey& key) const {
// Hash veloce usando i primi 8 bytes della pubkey const uint64_t* p = reinterpret_cast<const uint64_t*>(key.data);
const uint64_t* p = reinterpret_cast<const uint64_t*>(key.data()); // XOR rapido dei primi 64 bit
return p[0] ^ p[1]; return p[0] ^ p[1] ^ p[2];
}
};
struct PubkeyRawEqual {
bool operator()(const secp256k1_pubkey& a, const secp256k1_pubkey& b) const {
return memcmp(a.data, b.data, 64) == 0;
} }
}; };
#if USE_BLOOM_FILTER #if USE_BLOOM_FILTER
// Bloom Filter ultra-veloce per ridurre lookup costosi // Bloom Filter ottimizzato con prefetching e cache alignment
class BloomFilter { class __attribute__((aligned(64))) BloomFilter {
private: private:
uint64_t* bits; uint64_t* bits;
size_t size_bits; size_t size_bits;
size_t size_words; size_t size_words;
size_t mask;
// Hash functions ottimizzate // Hash functions ottimizzate - usa direttamente i 64 bytes interni
inline uint64_t hash1(const uint8_t* data) const { inline uint64_t hash1(const uint8_t* data) const {
const uint64_t* p = (const uint64_t*)data; const uint64_t* p = (const uint64_t*)data;
return p[0] ^ (p[1] << 7); return p[0] ^ (p[1] << 7);
@@ -72,115 +93,130 @@ private:
inline uint64_t hash3(const uint8_t* data) const { inline uint64_t hash3(const uint8_t* data) const {
const uint64_t* p = (const uint64_t*)data; const uint64_t* p = (const uint64_t*)data;
return (p[4] ^ (p[5] << 19)); return p[4] ^ (p[5] << 19);
} }
public: public:
BloomFilter(size_t bits_exponent) { BloomFilter(size_t bits_exponent) {
size_bits = 1ULL << bits_exponent; size_bits = 1ULL << bits_exponent;
size_words = size_bits / 64; size_words = size_bits / 64;
bits = new uint64_t[size_words](); mask = size_bits - 1;
// Alloca memoria allineata per cache lines (64 bytes)
int ret = posix_memalign((void**)&bits, 64, size_words * sizeof(uint64_t));
if (ret != 0) {
fprintf(stderr, "[ERROR] posix_memalign failed\n");
exit(1);
}
memset(bits, 0, size_words * sizeof(uint64_t));
} }
~BloomFilter() { ~BloomFilter() {
delete[] bits; free(bits);
} }
void add(const uint8_t* pubkey) { void add(const secp256k1_pubkey* pubkey) {
uint64_t h1 = hash1(pubkey) & (size_bits - 1); const uint8_t* data = pubkey->data;
uint64_t h2 = hash2(pubkey) & (size_bits - 1); uint64_t h1 = hash1(data) & mask;
uint64_t h3 = hash3(pubkey) & (size_bits - 1); uint64_t h2 = hash2(data) & mask;
uint64_t h3 = hash3(data) & mask;
bits[h1 / 64] |= (1ULL << (h1 % 64)); bits[h1 >> 6] |= (1ULL << (h1 & 63));
bits[h2 / 64] |= (1ULL << (h2 % 64)); bits[h2 >> 6] |= (1ULL << (h2 & 63));
bits[h3 / 64] |= (1ULL << (h3 % 64)); bits[h3 >> 6] |= (1ULL << (h3 & 63));
} }
inline bool might_contain(const uint8_t* pubkey) const { // Verifica ultra-veloce con prefetching
uint64_t h1 = hash1(pubkey) & (size_bits - 1); inline bool might_contain(const secp256k1_pubkey* pubkey) const {
uint64_t h2 = hash2(pubkey) & (size_bits - 1); const uint8_t* data = pubkey->data;
uint64_t h3 = hash3(pubkey) & (size_bits - 1); uint64_t h1 = hash1(data) & mask;
uint64_t h2 = hash2(data) & mask;
uint64_t h3 = hash3(data) & mask;
return (bits[h1 / 64] & (1ULL << (h1 % 64))) && // Prefetch delle cache lines
(bits[h2 / 64] & (1ULL << (h2 % 64))) && __builtin_prefetch(&bits[h1 >> 6], 0, 3);
(bits[h3 / 64] & (1ULL << (h3 % 64))); __builtin_prefetch(&bits[h2 >> 6], 0, 3);
__builtin_prefetch(&bits[h3 >> 6], 0, 3);
return (bits[h1 >> 6] & (1ULL << (h1 & 63))) &&
(bits[h2 >> 6] & (1ULL << (h2 & 63))) &&
(bits[h3 >> 6] & (1ULL << (h3 & 63)));
} }
}; };
static BloomFilter* bloom_filter = NULL; static BloomFilter* bloom_filter = NULL;
#endif #endif
// Variabili globali // ============================================================================
// VARIABILI GLOBALI
// ============================================================================
static volatile int keep_running = 1; static volatile int keep_running = 1;
static secp256k1_context* ctx = NULL; static secp256k1_context* ctx = NULL;
static std::vector<TargetKey> target_keys; static std::vector<TargetKey> target_keys;
static std::unordered_set<std::array<uint8_t, 65>, PubkeyHash> target_set; static std::unordered_map<secp256k1_pubkey, int, PubkeyRawHash, PubkeyRawEqual> target_map;
static uint64_t attempts_per_thread[MAX_THREADS] = {0}; static uint64_t attempts_per_thread[MAX_THREADS] = {0};
static time_t start_time; static time_t start_time;
static pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER; static pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;
static FILE* log_file = NULL; static FILE* log_file = NULL;
static int num_threads = 0; // Numero effettivo di thread da usare static int num_threads = 0;
#if USE_EC_BATCH
// Precomputed: G, 2G, 3G, ..., 256G per batch EC addition
static secp256k1_pubkey precomputed_G[EC_BATCH_SIZE];
#endif
// ============================================================================
// STRUTTURA THREAD
// ============================================================================
// Struttura per i thread
struct ThreadData { struct ThreadData {
int thread_id; int thread_id;
uint64_t seed; uint64_t seed;
uint8_t range_start[32]; // Inizio range dello spazio delle chiavi uint8_t range_start[32];
uint8_t range_end[32]; // Fine range dello spazio delle chiavi uint8_t range_end[32];
}; };
// Rileva numero di thread/core disponibili // ============================================================================
// Lascia un thread libero per il sistema operativo e I/O // UTILITY FUNCTIONS
// ============================================================================
int get_num_threads() { int get_num_threads() {
int num = (int)sysconf(_SC_NPROCESSORS_ONLN); int num = (int)sysconf(_SC_NPROCESSORS_ONLN);
if (num < 1) num = 1; if (num < 1) num = 1;
if (num > 1) num--; // Lascia un core libero per migliorare l'efficienza if (num > 1) num--;
if (num > MAX_THREADS) num = MAX_THREADS; if (num > MAX_THREADS) num = MAX_THREADS;
return num; return num;
} }
// Imposta affinity del thread a un core specifico
void set_thread_affinity(int core_id) { void set_thread_affinity(int core_id) {
cpu_set_t cpuset; cpu_set_t cpuset;
CPU_ZERO(&cpuset); CPU_ZERO(&cpuset);
CPU_SET(core_id, &cpuset); CPU_SET(core_id, &cpuset);
pthread_t current_thread = pthread_self(); pthread_t current_thread = pthread_self();
if (pthread_setaffinity_np(current_thread, sizeof(cpu_set_t), &cpuset) != 0) { pthread_setaffinity_np(current_thread, sizeof(cpu_set_t), &cpuset);
fprintf(stderr, "[WARNING] Impossibile impostare affinity per core %d\n", core_id);
}
} }
// Partiziona lo spazio delle chiavi tra i thread
void partition_keyspace(int thread_id, int total_threads, uint8_t* range_start, uint8_t* range_end) { void partition_keyspace(int thread_id, int total_threads, uint8_t* range_start, uint8_t* range_end) {
// Azzera entrambi gli array
memset(range_start, 0, 32); memset(range_start, 0, 32);
memset(range_end, 0xFF, 32); memset(range_end, 0xFF, 32);
// Partiziona usando i primi 8 bytes (64 bit)
// Questo dà 2^64 / total_threads chiavi per thread
uint64_t partition_size = UINT64_MAX / total_threads; uint64_t partition_size = UINT64_MAX / total_threads;
uint64_t start = partition_size * thread_id; uint64_t start = partition_size * thread_id;
uint64_t end = (thread_id == total_threads - 1) ? UINT64_MAX : (partition_size * (thread_id + 1) - 1); uint64_t end = (thread_id == total_threads - 1) ? UINT64_MAX : (partition_size * (thread_id + 1) - 1);
// Converti in big-endian per i primi 8 bytes
for (int i = 0; i < 8; i++) { for (int i = 0; i < 8; i++) {
range_start[i] = (uint8_t)(start >> (56 - i * 8)); range_start[i] = (uint8_t)(start >> (56 - i * 8));
range_end[i] = (uint8_t)(end >> (56 - i * 8)); range_end[i] = (uint8_t)(end >> (56 - i * 8));
} }
// I restanti 24 bytes rimangono:
// range_start[8..31] = 0x00 (minimo)
// range_end[8..31] = 0xFF (massimo)
} }
// Signal handler per chiusura pulita
void sigint_handler(int sig) { void sigint_handler(int sig) {
(void)sig; (void)sig;
keep_running = 0; keep_running = 0;
printf("\n\n[!] Interruzione rilevata, chiusura in corso...\n"); printf("\n\n[!] Interruzione rilevata, chiusura in corso...\n");
} }
// Converti bytes in hex
void bytes_to_hex(const uint8_t* bytes, size_t len, char* hex) { void bytes_to_hex(const uint8_t* bytes, size_t len, char* hex) {
for (size_t i = 0; i < len; i++) { for (size_t i = 0; i < len; i++) {
sprintf(hex + (i * 2), "%02x", bytes[i]); sprintf(hex + (i * 2), "%02x", bytes[i]);
@@ -188,7 +224,6 @@ void bytes_to_hex(const uint8_t* bytes, size_t len, char* hex) {
hex[len * 2] = '\0'; hex[len * 2] = '\0';
} }
// Converti hex in bytes
int hex_to_bytes(const char* hex, uint8_t* bytes, size_t len) { int hex_to_bytes(const char* hex, uint8_t* bytes, size_t len) {
if (strlen(hex) != len * 2) return 0; if (strlen(hex) != len * 2) return 0;
for (size_t i = 0; i < len; i++) { for (size_t i = 0; i < len; i++) {
@@ -197,10 +232,12 @@ int hex_to_bytes(const char* hex, uint8_t* bytes, size_t len) {
return 1; return 1;
} }
// Carica le chiavi pubbliche P2PK dal file // ============================================================================
// CARICAMENTO TARGET KEYS
// ============================================================================
int load_target_keys(const char* filename) { int load_target_keys(const char* filename) {
#if USE_BLOOM_FILTER #if USE_BLOOM_FILTER
// Inizializza Bloom filter
bloom_filter = new BloomFilter(BLOOM_SIZE_BITS); bloom_filter = new BloomFilter(BLOOM_SIZE_BITS);
printf("[+] Bloom filter inizializzato: %llu MB\n", printf("[+] Bloom filter inizializzato: %llu MB\n",
(unsigned long long)((1ULL << BLOOM_SIZE_BITS) / 8 / 1024 / 1024)); (unsigned long long)((1ULL << BLOOM_SIZE_BITS) / 8 / 1024 / 1024));
@@ -215,26 +252,18 @@ int load_target_keys(const char* filename) {
std::string line; std::string line;
int count = 0; int count = 0;
// Skip header se presente std::getline(file, line); // Skip header
std::getline(file, line);
while (std::getline(file, line)) { while (std::getline(file, line)) {
if (line.empty()) continue; if (line.empty()) continue;
// Estrai la chiave pubblica (formato: hex della pubkey)
// Il file dovrebbe contenere una pubkey per riga
std::string pubkey_hex = line; std::string pubkey_hex = line;
// Rimuovi spazi bianchi
pubkey_hex.erase(remove_if(pubkey_hex.begin(), pubkey_hex.end(), isspace), pubkey_hex.end()); pubkey_hex.erase(remove_if(pubkey_hex.begin(), pubkey_hex.end(), isspace), pubkey_hex.end());
// P2PK non compresso: 65 bytes (130 caratteri hex)
// Formato: 04 + 32 bytes X + 32 bytes Y
if (pubkey_hex.length() != 130 && pubkey_hex.length() != 128) { if (pubkey_hex.length() != 130 && pubkey_hex.length() != 128) {
continue; // Skip se non è una pubkey valida continue;
} }
// Aggiungi 04 se manca (formato non compresso)
if (pubkey_hex.length() == 128) { if (pubkey_hex.length() == 128) {
pubkey_hex = "04" + pubkey_hex; pubkey_hex = "04" + pubkey_hex;
} }
@@ -244,28 +273,60 @@ int load_target_keys(const char* filename) {
strcpy(key.hex, pubkey_hex.c_str()); strcpy(key.hex, pubkey_hex.c_str());
target_keys.push_back(key); target_keys.push_back(key);
// Inserisci nel set usando std::array per lookup veloce // Converti in secp256k1_pubkey per lookup diretto
std::array<uint8_t, 65> pubkey_array; secp256k1_pubkey pubkey_obj;
memcpy(pubkey_array.data(), key.pubkey, 65); if (secp256k1_ec_pubkey_parse(ctx, &pubkey_obj, key.pubkey, 65)) {
target_set.insert(pubkey_array); target_map[pubkey_obj] = count;
#if USE_BLOOM_FILTER #if USE_BLOOM_FILTER
// Aggiungi anche al Bloom filter bloom_filter->add(&pubkey_obj);
bloom_filter->add(key.pubkey);
#endif #endif
count++; count++;
}
} }
} }
file.close(); file.close();
printf("[+] Caricate %d chiavi pubbliche target\n", count); printf("[+] Caricate %d chiavi pubbliche target\n", count);
printf("[+] Target map size: %zu entries\n", target_map.size());
return count; return count;
} }
// Inizializza una chiave privata casuale nel range assegnato al thread // ============================================================================
// PRECOMPUTE EC GENERATOR MULTIPLES
// ============================================================================
#if USE_EC_BATCH
void precompute_generator_multiples() {
printf("[+] Precomputing EC generator multiples (1G, 2G, ..., %dG)...\n", EC_BATCH_SIZE);
uint8_t privkey[32];
for (int i = 0; i < EC_BATCH_SIZE; i++) {
memset(privkey, 0, 32);
// Imposta il valore (i+1) come privkey
// Per i=0: privkey=1, per i=255: privkey=256 (0x0100)
uint16_t value = i + 1;
privkey[31] = (uint8_t)(value & 0xFF); // byte basso
privkey[30] = (uint8_t)((value >> 8) & 0xFF); // byte alto
if (!secp256k1_ec_pubkey_create(ctx, &precomputed_G[i], privkey)) {
fprintf(stderr, "[ERROR] Failed to precompute %dG\n", i+1);
exit(1);
}
}
printf("[+] Precomputation complete!\n");
}
#endif
// ============================================================================
// CHIAVE PRIVATA RANDOMIZZATA
// ============================================================================
void init_random_privkey_in_range(uint8_t* privkey, uint64_t* seed, void init_random_privkey_in_range(uint8_t* privkey, uint64_t* seed,
const uint8_t* range_start, const uint8_t* /*range_end*/) { const uint8_t* range_start, const uint8_t* /*range_end*/) {
// Genera 32 bytes completamente casuali usando xorshift64
for (int i = 0; i < 32; i++) { for (int i = 0; i < 32; i++) {
*seed ^= *seed << 13; *seed ^= *seed << 13;
*seed ^= *seed >> 7; *seed ^= *seed >> 7;
@@ -273,68 +334,83 @@ void init_random_privkey_in_range(uint8_t* privkey, uint64_t* seed,
privkey[i] = (uint8_t)(*seed & 0xFF); privkey[i] = (uint8_t)(*seed & 0xFF);
} }
// Applica il prefisso del range ai primi 8 bytes per partizionare lo spazio
for (int i = 0; i < 8; i++) { for (int i = 0; i < 8; i++) {
privkey[i] = range_start[i]; privkey[i] = range_start[i];
} }
// I restanti 24 bytes (192 bit) sono casuali all'interno del chunk del thread
} }
// Incrementa la chiave privata di 1 (big-endian a 256 bit) // Incremento ottimizzato a 64-bit
// Ottimizzato per architetture a 64-bit usando operazioni native
static inline void increment_privkey(uint8_t* privkey) { static inline void increment_privkey(uint8_t* privkey) {
// Converti in array di uint64_t per operazioni a 64-bit (4x più veloce) uint64_t* p64 = (uint64_t*)privkey;
if (++p64[3]) return;
if (++p64[2]) return;
if (++p64[1]) return;
++p64[0];
}
// Incremento di N
static inline void add_to_privkey(uint8_t* privkey, uint64_t n) {
uint64_t* p64 = (uint64_t*)privkey; uint64_t* p64 = (uint64_t*)privkey;
// Incrementa partendo dal uint64_t meno significativo (little-endian in memoria) // Add to least significant word (little-endian)
// privkey[24-31] = p64[3], privkey[16-23] = p64[2], ecc. uint64_t old = p64[3];
if (++p64[3]) return; // Nessun carry nel primo blocco (caso più comune ~99.99%) p64[3] += n;
if (++p64[2]) return; // Carry solo nel secondo blocco
if (++p64[1]) return; // Carry solo nel terzo blocco // Handle carry
++p64[0]; // Carry fino al quarto blocco if (p64[3] < old) {
if (++p64[2] == 0) {
if (++p64[1] == 0) {
++p64[0];
}
}
}
} }
// Verifica se la pubkey corrisponde a un target // ============================================================================
// Ultra-ottimizzato: Bloom filter first, poi verifica precisa // MATCH CHECKING OTTIMIZZATO
static inline int check_match(const uint8_t* pubkey) { // ============================================================================
static inline int check_match_fast(const secp256k1_pubkey* pubkey) {
#if USE_BLOOM_FILTER #if USE_BLOOM_FILTER
// First pass: Bloom filter (velocissimo, O(1) con 3 operazioni bit) // Prima passa: Bloom filter
if (!bloom_filter->might_contain(pubkey)) { if (!bloom_filter->might_contain(pubkey)) {
return 0; // Sicuramente non presente (99.9%+ dei casi) return -1; // Sicuramente non presente
} }
// Possibile match: verifica precisa con hash set
#endif #endif
// Verifica precisa solo se Bloom filter dice "forse presente" // Lookup diretto nella hash map (zero copy!)
std::array<uint8_t, 65> pubkey_array; auto it = target_map.find(*pubkey);
memcpy(pubkey_array.data(), pubkey, 65); if (it != target_map.end()) {
return target_set.find(pubkey_array) != target_set.end(); return it->second; // Indice nella lista target_keys
}
return -1;
} }
// Salva una chiave trovata // ============================================================================
void save_found_key(const uint8_t* privkey, const uint8_t* pubkey) { // SALVATAGGIO CHIAVE TROVATA
// ============================================================================
void save_found_key(const uint8_t* privkey, int target_index) {
pthread_mutex_lock(&mutex); pthread_mutex_lock(&mutex);
char priv_hex[65], pub_hex[131]; char priv_hex[65];
bytes_to_hex(privkey, 32, priv_hex); bytes_to_hex(privkey, 32, priv_hex);
bytes_to_hex(pubkey, 65, pub_hex);
// Stampa a schermo
printf("\n\n"); printf("\n\n");
printf("========================================\n"); printf("========================================\n");
printf("🎯 CHIAVE TROVATA! 🎯\n"); printf("🎯 CHIAVE TROVATA! 🎯\n");
printf("========================================\n"); printf("========================================\n");
printf("Private Key: %s\n", priv_hex); printf("Private Key: %s\n", priv_hex);
printf("Public Key: %s\n", pub_hex); printf("Public Key: %s\n", target_keys[target_index].hex);
printf("========================================\n\n"); printf("========================================\n\n");
// Salva su file
FILE* found_file = fopen("found_keys.txt", "a"); FILE* found_file = fopen("found_keys.txt", "a");
if (found_file) { if (found_file) {
time_t now = time(NULL); time_t now = time(NULL);
fprintf(found_file, "\n=== FOUND at %s", ctime(&now)); fprintf(found_file, "\n=== FOUND at %s", ctime(&now));
fprintf(found_file, "Private Key: %s\n", priv_hex); fprintf(found_file, "Private Key: %s\n", priv_hex);
fprintf(found_file, "Public Key: %s\n", pub_hex); fprintf(found_file, "Public Key: %s\n", target_keys[target_index].hex);
fprintf(found_file, "========================================\n"); fprintf(found_file, "========================================\n");
fclose(found_file); fclose(found_file);
} }
@@ -342,7 +418,10 @@ void save_found_key(const uint8_t* privkey, const uint8_t* pubkey) {
pthread_mutex_unlock(&mutex); pthread_mutex_unlock(&mutex);
} }
// Formatta numero con suffisso K, M, G, T // ============================================================================
// LOGGING
// ============================================================================
void format_number(uint64_t num, char* buffer) { void format_number(uint64_t num, char* buffer) {
if (num >= 1000000000000ULL) { if (num >= 1000000000000ULL) {
sprintf(buffer, "%.2fT", num / 1000000000000.0); sprintf(buffer, "%.2fT", num / 1000000000000.0);
@@ -357,7 +436,6 @@ void format_number(uint64_t num, char* buffer) {
} }
} }
// Log progresso
void log_progress() { void log_progress() {
pthread_mutex_lock(&mutex); pthread_mutex_lock(&mutex);
@@ -388,82 +466,120 @@ void log_progress() {
pthread_mutex_unlock(&mutex); pthread_mutex_unlock(&mutex);
} }
// Thread worker // ============================================================================
// WORKER THREAD - VERSIONE ULTRA-OTTIMIZZATA
// ============================================================================
void* worker_thread(void* arg) { void* worker_thread(void* arg) {
ThreadData* data = (ThreadData*)arg; ThreadData* data = (ThreadData*)arg;
int thread_id = data->thread_id; int thread_id = data->thread_id;
uint64_t seed = data->seed; uint64_t seed = data->seed;
// Fissa questo thread a un core specifico per massima efficienza
set_thread_affinity(thread_id); set_thread_affinity(thread_id);
// Pre-alloca tutte le variabili per evitare allocazioni nel loop // Pre-alloca buffer
uint8_t privkey[32]; uint8_t privkey[32];
uint8_t pubkey[65]; secp256k1_pubkey pubkey_batch[EC_BATCH_SIZE];
secp256k1_pubkey pubkey_obj;
size_t pubkey_len;
uint64_t local_attempts = 0; uint64_t local_attempts = 0;
// Inizializza la chiave privata con un valore casuale nel range del thread
init_random_privkey_in_range(privkey, &seed, data->range_start, data->range_end); init_random_privkey_in_range(privkey, &seed, data->range_start, data->range_end);
// Mostra la chiave privata di partenza per questo thread
char privkey_start_hex[65]; char privkey_start_hex[65];
bytes_to_hex(privkey, 32, privkey_start_hex); bytes_to_hex(privkey, 32, privkey_start_hex);
printf("[+] Thread %d avviato su core %d\n", thread_id, thread_id); printf("[+] Thread %d avviato su core %d\n", thread_id, thread_id);
printf(" Privkey iniziale: %s\n", privkey_start_hex); printf(" Privkey iniziale: %s\n", privkey_start_hex);
// Loop principale ultra-ottimizzato con prefetching e branch reduction // ========================================================================
pubkey_len = 65; // Costante, settato una volta sola // LOOP PRINCIPALE CON EC BATCH PROCESSING
// ========================================================================
#if USE_EC_BATCH
// VERSIONE CON BATCH EC POINT ADDITION
while (keep_running) { while (keep_running) {
// Processa batch di chiavi consecutive // Step 1: Genera la prima pubkey del batch (P = privkey * G)
for (int batch = 0; batch < BATCH_SIZE; batch++) { if (!secp256k1_ec_pubkey_create(ctx, &pubkey_batch[0], privkey)) {
// Genera chiave pubblica non compressa usando secp256k1 increment_privkey(privkey);
// Questa è l'operazione più costosa (~95% del tempo) continue;
if (__builtin_expect(secp256k1_ec_pubkey_create(ctx, &pubkey_obj, privkey), 1)) { }
// Serializza in formato non compresso (65 bytes)
secp256k1_ec_pubkey_serialize(ctx, pubkey, &pubkey_len,
&pubkey_obj, SECP256K1_EC_UNCOMPRESSED);
// Verifica corrispondenza (Bloom filter first = velocissimo) // Step 2: Check prima chiave
// Solo ~0.001% dei casi passerà il Bloom filter int match_idx = check_match_fast(&pubkey_batch[0]);
if (__builtin_expect(check_match(pubkey), 0)) { if (__builtin_expect(match_idx >= 0, 0)) {
save_found_key(privkey, pubkey); save_found_key(privkey, match_idx);
}
// Step 3: Genera le restanti (EC_BATCH_SIZE - 1) chiavi usando EC addition
// P1 = P + G, P2 = P + 2G, P3 = P + 3G, ...
// Questo è MOLTO più veloce di fare EC_BATCH_SIZE moltiplicazioni!
uint8_t temp_privkey[32];
memcpy(temp_privkey, privkey, 32);
for (int i = 1; i < EC_BATCH_SIZE && keep_running; i++) {
increment_privkey(temp_privkey);
// EC point addition: pubkey_batch[i] = pubkey_batch[0] + precomputed_G[i-1]
// Usa EC pubkey combine (somma di due punti)
const secp256k1_pubkey* pubkeys_to_add[2] = {&pubkey_batch[0], &precomputed_G[i]};
if (secp256k1_ec_pubkey_combine(ctx, &pubkey_batch[i], pubkeys_to_add, 2)) {
match_idx = check_match_fast(&pubkey_batch[i]);
if (__builtin_expect(match_idx >= 0, 0)) {
save_found_key(temp_privkey, match_idx);
} }
} }
}
// Incrementa la chiave privata di 1 (inline, operazioni a 64-bit) local_attempts += EC_BATCH_SIZE;
add_to_privkey(privkey, EC_BATCH_SIZE);
// Aggiorna contatore globale periodicamente
if ((local_attempts & (SYNC_BATCH - 1)) == 0) {
attempts_per_thread[thread_id] = local_attempts;
}
}
#else
// VERSIONE STANDARD (fallback senza batch)
while (keep_running) {
secp256k1_pubkey pubkey_obj;
for (int batch = 0; batch < SYNC_BATCH; batch++) {
if (__builtin_expect(secp256k1_ec_pubkey_create(ctx, &pubkey_obj, privkey), 1)) {
int match_idx = check_match_fast(&pubkey_obj);
if (__builtin_expect(match_idx >= 0, 0)) {
save_found_key(privkey, match_idx);
}
}
increment_privkey(privkey); increment_privkey(privkey);
} }
local_attempts += BATCH_SIZE; local_attempts += SYNC_BATCH;
// Aggiorna contatore globale (senza lock - ogni thread scrive solo il proprio indice)
attempts_per_thread[thread_id] = local_attempts; attempts_per_thread[thread_id] = local_attempts;
// Check keep_running solo una volta per batch invece che ad ogni iterazione
if (__builtin_expect(!keep_running, 0)) break; if (__builtin_expect(!keep_running, 0)) break;
} }
#endif
printf("[+] Thread %d terminato (%lu tentativi)\n", thread_id, local_attempts); printf("[+] Thread %d terminato (%lu tentativi)\n", thread_id, local_attempts);
return NULL; return NULL;
} }
// ============================================================================
// MAIN
// ============================================================================
int main(int argc, char** argv) { int main(int argc, char** argv) {
printf("========================================\n"); printf("========================================\n");
printf(" Bitcoin P2PK Bruteforce v1.0\n"); printf(" Bitcoin P2PK Bruteforce v2.0 ULTRA\n");
printf(" CPU-Optimized Edition\n");
printf(" SOLO PER SCOPI EDUCATIVI\n"); printf(" SOLO PER SCOPI EDUCATIVI\n");
printf("========================================\n\n"); printf("========================================\n\n");
// Gestisci argomenti
const char* target_file = "target_keys.txt"; const char* target_file = "target_keys.txt";
if (argc > 1) { if (argc > 1) {
target_file = argv[1]; target_file = argv[1];
} }
// Inizializza secp256k1 con flag ottimizzato per verifiche multiple // Inizializza secp256k1
printf("[+] Inizializzazione secp256k1...\n"); printf("[+] Inizializzazione secp256k1...\n");
ctx = secp256k1_context_create(SECP256K1_CONTEXT_SIGN | SECP256K1_CONTEXT_VERIFY); ctx = secp256k1_context_create(SECP256K1_CONTEXT_SIGN | SECP256K1_CONTEXT_VERIFY);
if (!ctx) { if (!ctx) {
@@ -471,7 +587,7 @@ int main(int argc, char** argv) {
return 1; return 1;
} }
// Randomizza il contesto per migliorare la sicurezza e performance // Randomizza contesto
unsigned char random_seed[32]; unsigned char random_seed[32];
FILE* urandom = fopen("/dev/urandom", "rb"); FILE* urandom = fopen("/dev/urandom", "rb");
if (urandom) { if (urandom) {
@@ -479,14 +595,17 @@ int main(int argc, char** argv) {
fclose(urandom); fclose(urandom);
if (bytes_read == 32) { if (bytes_read == 32) {
if (secp256k1_context_randomize(ctx, random_seed) != 1) { if (secp256k1_context_randomize(ctx, random_seed) != 1) {
fprintf(stderr, "[WARNING] Impossibile randomizzare contesto secp256k1\n"); fprintf(stderr, "[WARNING] secp256k1_context_randomize failed\n");
} }
} else {
fprintf(stderr, "[WARNING] Impossibile leggere entropy da /dev/urandom\n");
} }
} }
// Carica chiavi target // Precompute EC multiples
#if USE_EC_BATCH
precompute_generator_multiples();
#endif
// Carica target keys
printf("[+] Caricamento chiavi target da %s...\n", target_file); printf("[+] Caricamento chiavi target da %s...\n", target_file);
if (load_target_keys(target_file) == 0) { if (load_target_keys(target_file) == 0) {
fprintf(stderr, "[ERROR] Nessuna chiave target caricata\n"); fprintf(stderr, "[ERROR] Nessuna chiave target caricata\n");
@@ -504,12 +623,11 @@ int main(int argc, char** argv) {
fprintf(log_file, "timestamp,attempts,keys_per_sec\n"); fprintf(log_file, "timestamp,attempts,keys_per_sec\n");
} }
// Rileva numero di thread disponibili // Rileva numero di thread
num_threads = get_num_threads(); num_threads = get_num_threads();
printf("[+] CPU rilevata: %d thread disponibili\n", num_threads); printf("[+] CPU rilevata: %d thread disponibili\n", num_threads);
printf("[+] Partizionamento spazio chiavi in %d regioni\n", num_threads); printf("[+] Batch size: %d keys per iteration\n", EC_BATCH_SIZE);
// Inizializza timestamp e seed base robusto
start_time = time(NULL); start_time = time(NULL);
srand(time(NULL)); srand(time(NULL));
@@ -522,23 +640,17 @@ int main(int argc, char** argv) {
for (int i = 0; i < num_threads; i++) { for (int i = 0; i < num_threads; i++) {
thread_data[i].thread_id = i; thread_data[i].thread_id = i;
// Seed molto distanziati: combina timestamp, thread_id e random
// Questo garantisce seed completamente diversi anche se lanciato rapidamente
uint64_t base_seed = (uint64_t)time(NULL); uint64_t base_seed = (uint64_t)time(NULL);
uint64_t thread_offset = ((uint64_t)i << 48); // Usa i bit alti uint64_t thread_offset = ((uint64_t)i << 48);
uint64_t random_part = ((uint64_t)rand() << 32) | rand(); uint64_t random_part = ((uint64_t)rand() << 32) | rand();
thread_data[i].seed = base_seed ^ thread_offset ^ random_part; thread_data[i].seed = base_seed ^ thread_offset ^ random_part;
// Partiziona lo spazio delle chiavi
partition_keyspace(i, num_threads, thread_data[i].range_start, thread_data[i].range_end); partition_keyspace(i, num_threads, thread_data[i].range_start, thread_data[i].range_end);
// Mostra info del range (primi 4 bytes per brevità) printf(" Thread %d: range 0x%02x%02x%02x%02x... (seed: %016lx)\n",
printf(" Thread %d: range 0x%02x%02x%02x%02x... - 0x%02x%02x%02x%02x... (seed: %016lx)\n",
i, i,
thread_data[i].range_start[0], thread_data[i].range_start[1], thread_data[i].range_start[0], thread_data[i].range_start[1],
thread_data[i].range_start[2], thread_data[i].range_start[3], thread_data[i].range_start[2], thread_data[i].range_start[3],
thread_data[i].range_end[0], thread_data[i].range_end[1],
thread_data[i].range_end[2], thread_data[i].range_end[3],
thread_data[i].seed); thread_data[i].seed);
pthread_create(&threads[i], NULL, worker_thread, &thread_data[i]); pthread_create(&threads[i], NULL, worker_thread, &thread_data[i]);
@@ -546,7 +658,7 @@ int main(int argc, char** argv) {
printf("\n"); printf("\n");
// Loop principale - mostra progresso // Loop principale
while (keep_running) { while (keep_running) {
sleep(10); sleep(10);
log_progress(); log_progress();