89 lines
2.3 KiB
C++
89 lines
2.3 KiB
C++
|
// bitmessage cracker, build with g++ or MSVS to a shared library, use included python code for usage under bitmessage
|
||
|
|
#ifdef _WIN32
|
||
|
|
#include "Winsock.h"
|
||
|
|
#include "Windows.h"
|
||
|
|
#define uint64_t unsigned __int64
|
||
|
|
#else
|
||
|
|
#include <arpa/inet.h>
|
||
|
|
#include <pthread.h>
|
||
|
|
#include <stdint.h>
|
||
|
|
#endif
|
||
|
|
#include <string.h>
|
||
|
|
#include <stdio.h>
|
||
|
|
#include <stdlib.h>
|
||
|
|
|
||
|
|
#include "openssl/sha.h"
|
||
|
|
|
||
|
|
#define HASH_SIZE 64
|
||
|
|
#define BUFLEN 16384
|
||
|
|
|
||
|
|
#define ntohll(x) ( ( (uint64_t)(ntohl( (unsigned int)((x << 32) >> 32) )) << 32) | ntohl( ((unsigned int)(x >> 32)) ) )
|
||
|
|
|
||
|
|
unsigned long long max_val;
|
||
|
|
unsigned char *initialHash;
|
||
|
|
|
||
|
|
|
||
|
|
int numthreads = 8;
|
||
|
|
unsigned long long successval = 0;
|
||
|
|
#ifdef _WIN32
|
||
|
|
DWORD WINAPI threadfunc(LPVOID lpParameter) {
|
||
|
|
DWORD incamt = (DWORD)lpParameter;
|
||
|
|
#else
|
||
|
|
void * threadfunc(void* param) {
|
||
|
|
unsigned int incamt = (unsigned int)param;
|
||
|
|
#endif
|
||
|
|
SHA512_CTX sha;
|
||
|
|
unsigned char buf[HASH_SIZE + sizeof(uint64_t)] = { 0 };
|
||
|
|
unsigned char output[HASH_SIZE] = { 0 };
|
||
|
|
|
||
|
|
memcpy(buf + sizeof(uint64_t), initialHash, HASH_SIZE);
|
||
|
|
|
||
|
|
unsigned long long tmpnonce = incamt;
|
||
|
|
unsigned long long * nonce = (unsigned long long *)buf;
|
||
|
|
unsigned long long * hash = (unsigned long long *)output;
|
||
|
|
while (successval == 0) {
|
||
|
|
tmpnonce += numthreads;
|
||
|
|
|
||
|
|
(*nonce) = ntohll(tmpnonce); /* increment nonce */
|
||
|
|
SHA512_Init(&sha);
|
||
|
|
SHA512_Update(&sha, buf, HASH_SIZE + sizeof(uint64_t));
|
||
|
|
SHA512_Final(output, &sha);
|
||
|
|
SHA512_Init(&sha);
|
||
|
|
SHA512_Update(&sha, output, HASH_SIZE);
|
||
|
|
SHA512_Final(output, &sha);
|
||
|
|
|
||
|
|
if (ntohll(*hash) < max_val) {
|
||
|
|
successval = tmpnonce;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return NULL;
|
||
|
|
}
|
||
|
|
|
||
|
|
extern "C" __declspec(dllexport) unsigned long long BitmessagePOW(unsigned char * starthash, unsigned long long target)
|
||
|
|
{
|
||
|
|
successval = 0;
|
||
|
|
max_val = target;
|
||
|
|
initialHash = (unsigned char *)starthash;
|
||
|
|
# ifdef _WIN32
|
||
|
|
HANDLE* threads = (HANDLE*)calloc(sizeof(HANDLE), numthreads);
|
||
|
|
# else
|
||
|
|
pthread_t* threads = calloc(sizeof(pthread_t), numthreads);
|
||
|
|
# endif
|
||
|
|
for (int i = 0; i < numthreads; i++) {
|
||
|
|
# ifdef _WIN32
|
||
|
|
threads[i] = CreateThread(NULL, 0, threadfunc, (LPVOID)i, 0, NULL);
|
||
|
|
SetThreadPriority(threads[i], THREAD_PRIORITY_IDLE);
|
||
|
|
# else
|
||
|
|
pthread_create(&threads[i], NULL, threadfunc, (void*)i);
|
||
|
|
# endif
|
||
|
|
}
|
||
|
|
# ifdef _WIN32
|
||
|
|
WaitForMultipleObjects(numthreads, threads, TRUE, INFINITE);
|
||
|
|
# else
|
||
|
|
for (int i = 0; i < numthreads; i++) {
|
||
|
|
pthread_join(threads[i], NULL);
|
||
|
|
}
|
||
|
|
# endif
|
||
|
|
free(threads);
|
||
|
|
return successval;
|
||
|
|
}
|