Topic: == Bitcoin challenge transaction: ~1000 BTC total bounty to solvers! ==UPDATED== - page 53. (Read 54326 times)

Random pybkey bit64 - bit65
pk: 02d3f7e6437398932017b803d1253ccefafae819d29ad5d5be9a4278d702f2427d
pk: 027bd3a5baf58b2dd2872605a8667451a95ae8684db15e2f726ab3aa8cbe308670
pk: 036300883803608848b5fa2832a4da1e2dc937dd948ce0dc35650f1d03aaf06173

bool GenerateSptable() {

  // Init SecpK1
  Secp256K1 *secp = new Secp256K1();
  secp->Init();
  
  int size = 512;
    
  // Compute generator table
  Point *Sp = new Point[size];
  Int *dS = new Int[size];
  Sp[0] = secp->G;
  dS[0].SetInt32(1);
  for (int i = 1; i < size; i++) {
	dS[i].Add(&dS[i-1], &dS[i-1]);
	Sp[i] = secp->DoubleAffine(Sp[i-1]);
	printf("\nGenerate Sp-table GPUSptable.h size i: %d", i);
  }
  
  // Write file
  FILE *f = fopen("GPU/GPUSptable.h", "wb");
  fprintf(f, "// File generated by Main::GenerateSptable()\n");
  fprintf(f, "#define GRP_SIZE %d\n\n", size);
  fprintf(f, "// SecpK1 Generator table (Contains G,2G,4G,8G...,(SIZE/2 )...G)\n");
  fprintf(f, "__device__ __constant__ uint64_t Spx[][4] = {\n");
  for (int i = 0; i < size/2; i++) {
    fprintf(f, "  %s,\n", Sp[i].x.GetC64Str(4).c_str());
  }
  fprintf(f, "};\n");

  fprintf(f, "__device__ __constant__ uint64_t Spy[][4] = {\n");
  for (int i = 0; i < size/2; i++) {
    fprintf(f, "  %s,\n", Sp[i].y.GetC64Str(4).c_str());
  }
  fprintf(f, "};\n\n");
  
  fprintf(f, "__device__ __constant__ uint64_t dS[][4] = {\n");
  for (int i = 0; i < size/2; i++) {
    fprintf(f, "  %s,\n", dS[i].GetC64Str(4).c_str());
  }
  fprintf(f, "};\n\n");

  fclose(f);
  delete[] Sp;
  delete[] dS;
  
  return true;
}