Quote from: alek76 on May 20, 2020, 10:54:59 PM

Quote from: fluffyCRUNK on May 20, 2020, 08:34:47 PM

Quote from: WanderingPhilospher on May 20, 2020, 08:24:48 PM

Quote from: fluffyCRUNK on May 20, 2020, 08:18:09 PM

Hi, i'm having some issues saving the private key once found, it does not get saved?

It does not save. Are you compiling your own version? If so, I can give you a code snippet to add to source file that will generate a saved file with pub and priv key.

No i'm just using the release version, ah that's a little concerning, would be nice to save in case of a power outage, crash or accidental cmd close.

It looks something like this:
in Kangaroo.cpp

Code:

bool Kangaroo::output(string msg) {

  FILE *f = stdout;
  f = fopen("Result.txt", "a");

  if (f == NULL) {
printf("[error] Cannot open file Result.txt\n");
f = stdout;
return false;
  }
  else {
fprintf(f, "%s\n", msg.c_str());
fclose(f);
printf("[i] Success saved to file Result.txt\n");
return true;
  }
}

and

Code:

bool Kangaroo::CheckKey(Int d1,Int d2,uint8_t type) {

  // Resolve equivalence collision

  if(type & 0x1)
   d1.ModNegK1order();
  if(type & 0x2)
   d2.ModNegK1order();

  Int pk(&d1);
  pk.ModAddK1order(&d2);

  Point P = secp->ComputePublicKey(&pk);

  if(P.equals(keyToSearch)) {
   // Key solved
#ifdef USE_SYMMETRY
   pk.ModAddK1order(&rangeWidthDiv2);
#endif
   pk.ModAddK1order(&rangeStart);
   Point PR = secp->ComputePublicKey(&pk);
   ::printf("\nKey#%2d [%dN]Pub: 0x%s \n",keyIdx,type,secp->GetPublicKeyHex(true,keysToSearch[keyIdx]).c_str());
   // Save Priv
   std::string prvkey = pk.GetBase16().c_str();
   bool save_pk = output(prvkey + string(":") + string("04") + PR.x.GetBase16().c_str() + PR.y.GetBase16().c_str() );
   if( PR.equals(keysToSearch[keyIdx]) ) {
   ::printf(" Priv: 0x%s \n",pk.GetBase16().c_str());
   } else {
   ::printf(" Failed !\n");
   ::printf(" Priv: 0x%s \n",pk.GetBase16().c_str());
   return false;
   }
   return true;
  }

  if(P.equals(keyToSearchNeg)) {
   // Key solved
   pk.ModNegK1order();
#ifdef USE_SYMMETRY
   pk.ModAddK1order(&rangeWidthDiv2);
#endif
   pk.ModAddK1order(&rangeStart);
   Point PR = secp->ComputePublicKey(&pk);
   ::printf("\nKey#%2d [%dS]Pub: 0x%s \n",keyIdx,type,secp->GetPublicKeyHex(true,keysToSearch[keyIdx]).c_str());
   // Save Priv
   std::string prvkeyNeg = pk.GetBase16().c_str();
   bool save_pk = output(prvkeyNeg + string(":") + string("04") + PR.x.GetBase16().c_str() + PR.y.GetBase16().c_str() );
   if(PR.equals(keysToSearch[keyIdx]) ) {
   ::printf(" Priv: 0x%s \n",pk.GetBase16().c_str());
   } else {
   ::printf(" Failed !\n");
   ::printf(" Priv: 0x%s \n",pk.GetBase16().c_str());
   return false;
   }
   return true;
  }

  return false;

}

Add in Kangaroo.h

Code:

bool output(std::string msg);

But I do not need this, I use other version. Where the problem with RAM is solved, can change the number of files to save DP=16. But the problems with disk space have begun

Alek, do you mean your version?