Enigma Encrypter

You can try for ever and ever to decode these messages with Turing's Bombe Machine, but it will never work.

Comment

As people who are new to hackathons, we decided to take on the hardest project. It started off going really well. We thought we turned Enigma into a machine. However, we were unable to decode any messages, because we failed to realize the fact that the rotors do not turn the next rotor when it goes from Z to A. If we had known about that before 3 hours before the project was due, perhaps we would have had a working decryptor. However, we did create a machine that would have baffled the Bombe because it is not like other enigma machines. Considering the fact that we have only started learning C++ a few months ago, and that we are new to the world of hackathoning, I think we did well. I definitely had fun staying up for a whole 30 hours and I cannot wait to go to another hackathon!

Oh, and here is our code...

(we had a decryption code too but it didn't work quite right)

include

using namespace std;

int validnumber(int); int letter2num(char); char num2letter(int); char rotorI(int); char rotorII(int); char rotorIII(int); char rotorIV(int); char rotorV(int); char rotorVI(int); char rotorVII(int); char rotorVIII(int); char Rrotors(int,char); char RrotorI(char); char RrotorII(char); char RrotorIII(char); char RrotorIV(char); char RrotorV(char); char RrotorVI(char); char RrotorVII(char); char RrotorVIII(char); char reflectorB(int); char reflectorA(int); char reflectorC(int); int rotorNum(int, int); char BigR(char, int, int, int, int,int,int); char plug(char,char[2][10]); //char[] cToABC(int);

int main() { int rotor1, rotor2, rotor3, refNum; char start1, start2, start3, num1, num2, num3, refLetter; char plugs[2][10]; string message;

cout << "Enigma M3 Machine Application:\r\nEnter Reflector:";
cin >> refLetter;
if(toupper(refLetter) == 'B')
  refNum = 11;
else if(toupper(refLetter) == 'A')
  refNum = 10;
else if(toupper(refLetter) == 'C')
  refNum = 12;
cout << "Enter Rotor 1: ";
cin >> rotor3;
cout << "Enter Rotor 2: ";
cin >> rotor2;
cout << "Enter Rotor 3: ";
cin >> rotor1;
cout << "Enter Ringstellung Value 1: ";
cin >> start1;
cout << "Enter Ringstellung Value 2: ";
cin >> start2;
cout << "Enter Ringstellung Value 3: ";
cin >> start3;
cout << "Enter Grundstellung Value 1: ";
cin >> num1;
cout << "Enter Grundstellung Value 2: ";
cin >> num2;
cout << "Enter Grundstellung Value 3: ";
cin >> num3;

// for(int i = 0;i < 10;i++) // { // for(int j = 0;j < 2;j++) // { // cout << "Enter Plug " << i + 1 << " Letter " << j + 1 << ": "; // cin >> plugs[j][i]; // plugs[j][i]=toupper(plugs[j][i]); // for(int k = 0;k <= i;k++) // { // for(int p = 0;p <= j;p++) // { // if(plugs[j][i]!=plugs[p][k] || (i== k && j==p)) // continue; // else{ // cout << "That plug is already chosen. Try again!" << endl; // j--; // } // } // } // } // } cout << "Enter code you wish to encrypt:" << endl; getline(cin, message); getline(cin, message); int r, g;

r = letter2num(num1) + (letter2num(num2) * 26 - 26) + (letter2num(num3) * 676 - 676);
g = (letter2num(start1)-1) + (letter2num(start2)* 26 - 26) + (letter2num(start3)* 676 - 676);


cout << "Encrypted Code: ";

string encrypted = "";

aa for(int c = 0; c < message.size();c++) { encrypted += /plug/(BigR(/plug/(toupper(message.at(c))/,plugs/),r+c,g,rotor1,rotor2,rotor3,refNum)/,plugs/); } cout << encrypted << endl;

return 0; }

/* char[] cToABC(int c) { char a[3]; a[0] = num2letter(c/676); c= c%676; a[1] = num2letter(c/26); c= c%26; a[2]=num2letter(c);

return a;

} */

char plug(char input, char array[2][10]) { char buddy; for(int i = 0;i < 10;i++) { if(array[0][i] == input){ buddy = array[1][i]; return buddy;} else if(array[1][i] == input){ buddy = array[0][i]; return buddy;} else buddy = input; } return buddy; }

char BigR(char inLetter, int iteration,int interation2, int a, int b, int c, int refNum) { int rotor1 = a; int rotor2 = b; int rotor3 = c; int tmp;

tmp=(rotorNum(rotor1,validnumber(letter2num(inLetter)+iteration-interation2))-iteration+interation2);
//cout << num2letter(validnumber(tmp)) << endl;
tmp=(rotorNum(rotor2,validnumber(tmp+(iteration/26)-interation2/26))-(iteration/26)+interation2/26);
//cout << num2letter(validnumber(tmp)) << endl;
tmp=(rotorNum(rotor3,validnumber(tmp+(iteration/676)-interation2/676))-(iteration/676)+interation2/676);
//cout << num2letter(validnumber(tmp)) << endl;
tmp=rotorNum(refNum,tmp);
//cout << num2letter(validnumber(tmp)) << "reflector" << endl;


tmp=letter2num(Rrotors(rotor3,num2letter(validnumber(tmp+(iteration/676)-interation2/676)))-iteration/676+interation2/676);
//cout << num2letter(validnumber(tmp)) << endl;
tmp=letter2num(Rrotors(rotor2,num2letter(validnumber(tmp+(iteration/26)-interation2/26)))-iteration/26+interation2/26);
//cout << num2letter(validnumber(tmp)) << endl;
tmp=letter2num(Rrotors(rotor1,num2letter(validnumber(tmp+(iteration)-interation2)))-iteration+interation2);
//cout << num2letter(validnumber(tmp)) << endl;
tmp=num2letter(validnumber(tmp));
return tmp;

}

int letter2num(char a) { int num = (int)toupper(a) - 64; return num; }

char num2letter(int a) { int b = a + 64; char letter = (char)b; return b; }

int validnumber(int a) { while(a > 26 || a < 1) { if(a > 26) a = a - 26; else a = a + 26; } return a; }

int rotorNum(int rotorNum, int valueInserted) { switch(rotorNum){ case 1: return letter2num(rotorI(valueInserted)); break; case 2: return letter2num(rotorII(valueInserted)); break; case 3: return letter2num(rotorIII(valueInserted)); break; case 4: return letter2num(rotorIV(valueInserted)); break; case 5: return letter2num(rotorV(valueInserted)); break; case 6: return letter2num(rotorVI(valueInserted)); break; case 7: return letter2num(rotorVII(valueInserted)); break; case 8: return letter2num(rotorVIII(valueInserted)); break; case 10: return letter2num(reflectorA(valueInserted)); break; case 11: return letter2num(reflectorB(valueInserted)); break;

   case 12:
    return letter2num(reflectorC(valueInserted));
break;

}}

char Rrotors(int rnum, char in) {

    string ABC="ABCDEFGHIJKLMNOPQRSTUVWXYZ";

    switch(rnum)
    {
        case 1:
                return RrotorI(in);
       break;
       case 2:
                return RrotorII(in);
       break;
       case 3:
                return RrotorIII(in);
       break;
       case 4:
          return RrotorIV(in);
       break;
       case 5:
            return RrotorV(in);
       break;
       case 6:
            return RrotorVI(in);

        break;

        case 7:
            return RrotorVII(in);
        break;
        case 8:
            return RrotorVIII(in);
        break;


    }

}

char RrotorVII(char a) { switch(a) { case 'N': return 'A'; break; case 'Z': return 'B'; break; case 'J': return 'C'; break; case 'H': return 'D'; break; case 'G': return 'E'; break; case 'R': return 'F'; break; case 'C': return 'G'; break; case 'X': return 'H'; break; case 'M': return 'I'; break; case 'Y': return 'J'; break; case 'S': return 'K'; break; case 'W': return 'L'; break; case 'B': return 'M'; break; case 'O': return 'N'; break; case 'U': return 'O'; break; case 'F': return 'P'; break; case 'A': return 'Q'; break; case 'I': return 'R'; break; case 'V': return 'S'; break; case 'L': return 'T'; break; case 'P': return 'U'; break; case 'E': return 'V'; break; case 'K': return 'W'; break; case 'Q': return 'X'; break; case 'D': return 'Y'; break; case 'T': return 'Z'; break; }

}

char RrotorVI(char a) { switch(a) { case 'J': return 'A'; break; case 'P': return 'B'; break; case 'G': return 'C'; break; case 'V': return 'D'; break; case 'O': return 'E'; break; case 'U': return 'F'; break; case 'M': return 'G'; break; case 'F': return 'H'; break; case 'Y': return 'I'; break; case 'Q': return 'J'; break; case 'B': return 'K'; break; case 'E': return 'L'; break; case 'N': return 'M'; break; case 'H': return 'N'; break; case 'Z': return 'O'; break; case 'R': return 'P'; break; case 'D': return 'Q'; break; case 'K': return 'R'; break; case 'A': return 'S'; break; case 'S': return 'T'; break; case 'X': return 'U'; break; case 'L': return 'V'; break; case 'I': return 'W'; break; case 'C': return 'X'; break; case 'T': return 'Y'; break; case 'W': return 'Z'; break; }

}

char RrotorVIII(char a) { switch(a) { case 'F': return 'A'; break; case 'K': return 'B'; break; case 'Q': return 'C'; break; case 'H': return 'D'; break; case 'T': return 'E'; break; case 'L': return 'F'; break; case 'X': return 'G'; break; case 'O': return 'H'; break; case 'C': return 'I'; break; case 'B': return 'J'; break; case 'J': return 'K'; break; case 'S': return 'L'; break; case 'P': return 'M'; break; case 'D': return 'N'; break; case 'Z': return 'O'; break; case 'R': return 'P'; break; case 'A': return 'Q'; break; case 'M': return 'R'; break; case 'E': return 'S'; break; case 'W': return 'T'; break; case 'N': return 'U'; break; case 'I': return 'V'; break; case 'U': return 'W'; break; case 'Y': return 'X'; break; case 'G': return 'Y'; break; case 'V': return 'Z'; break; }

}

char RrotorIV(char a) { switch(a) { case 'E': return 'A'; break; case 'S': return 'B'; break; case 'O': return 'C'; break; case 'V': return 'D'; break; case 'P': return 'E'; break; case 'Z': return 'F'; break; case 'J': return 'G'; break; case 'A': return 'H'; break; case 'Y': return 'I'; break; case 'Q': return 'J'; break; case 'U': return 'K'; break; case 'I': return 'L'; break; case 'R': return 'M'; break; case 'H': return 'N'; break; case 'X': return 'O'; break; case 'L': return 'P'; break; case 'N': return 'Q'; break; case 'F': return 'R'; break; case 'T': return 'S'; break; case 'G': return 'T'; break; case 'K': return 'U'; break; case 'D': return 'V'; break; case 'C': return 'W'; break; case 'M': return 'X'; break; case 'W': return 'Y'; break; case 'B': return 'Z'; break; }

}

char RrotorV(char a) { switch(a) { case 'V': return 'A'; break; case 'Z': return 'B'; break; case 'B': return 'C'; break; case 'R': return 'D'; break; case 'G': return 'E'; break; case 'I': return 'F'; break; case 'T': return 'G'; break; case 'Y': return 'H'; break; case 'U': return 'I'; break; case 'P': return 'J'; break; case 'S': return 'K'; break; case 'D': return 'L'; break; case 'N': return 'M'; break; case 'H': return 'N'; break; case 'L': return 'O'; break; case 'X': return 'P'; break; case 'A': return 'Q'; break; case 'W': return 'R'; break; case 'M': return 'S'; break; case 'J': return 'T'; break; case 'Q': return 'U'; break; case 'O': return 'V'; break; case 'F': return 'W'; break; case 'E': return 'X'; break; case 'C': return 'Y'; break; case 'K': return 'Z'; break; }

}

char RrotorIII(char a) { switch(a) { case 'B': return 'A'; break; case 'D': return 'B'; break; case 'F': return 'C'; break; case 'H': return 'D'; break; case 'J': return 'E'; break; case 'L': return 'F'; break; case 'C': return 'G'; break; case 'P': return 'H'; break; case 'R': return 'I'; break; case 'T': return 'J'; break; case 'X': return 'K'; break; case 'V': return 'L'; break; case 'Z': return 'M'; break; case 'N': return 'N'; break; case 'Y': return 'O'; break; case 'E': return 'P'; break; case 'I': return 'Q'; break; case 'W': return 'R'; break; case 'G': return 'S'; break; case 'A': return 'T'; break; case 'K': return 'U'; break; case 'M': return 'V'; break; case 'U': return 'W'; break; case 'S': return 'X'; break; case 'Q': return 'Y'; break; case 'O': return 'Z'; break; }

}

char RrotorI(char a) { switch(a) { case 'E': return 'A'; break; case 'K': return 'B'; break; case 'M': return 'C'; break; case 'F': return 'D'; break; case 'L': return 'E'; break; case 'G': return 'F'; break; case 'D': return 'G'; break; case 'Q': return 'H'; break; case 'V': return 'I'; break; case 'Z': return 'J'; break; case 'N': return 'K'; break; case 'T': return 'L'; break; case 'O': return 'M'; break; case 'W': return 'N'; break; case 'Y': return 'O'; break; case 'H': return 'P'; break; case 'X': return 'Q'; break; case 'U': return 'R'; break; case 'S': return 'S'; break; case 'P': return 'T'; break; case 'A': return 'U'; break; case 'I': return 'V'; break; case 'B': return 'W'; break; case 'R': return 'X'; break; case 'C': return 'Y'; break; case 'J': return 'Z'; break; }

}

char RrotorII(char a) { switch(a) { case 'A': return 'A'; break; case 'J': return 'B'; break; case 'D': return 'C'; break; case 'K': return 'D'; break; case 'S': return 'E'; break; case 'I': return 'F'; break; case 'R': return 'G'; break; case 'U': return 'H'; break; case 'X': return 'I'; break; case 'B': return 'J'; break; case 'L': return 'K'; break; case 'H': return 'L'; break; case 'W': return 'M'; break; case 'T': return 'N'; break; case 'M': return 'O'; break; case 'C': return 'P'; break; case 'Q': return 'Q'; break; case 'G': return 'R'; break; case 'Z': return 'S'; break; case 'N': return 'T'; break; case 'P': return 'U'; break; case 'Y': return 'V'; break; case 'F': return 'W'; break; case 'V': return 'X'; break; case 'O': return 'Y'; break; case 'E': return 'Z'; break; }

}

char rotorII(int a) { switch(a) { case 1: return 'A'; break; case 2: return 'J'; break; case 3: return 'D'; break; case 4: return 'K'; break; case 5: return 'S'; break; case 6: return 'I'; break; case 7: return 'R'; break; case 8: return 'U'; break; case 9: return 'X'; break; case 10: return 'B'; break; case 11: return 'L'; break; case 12: return 'H'; break; case 13: return 'W'; break; case 14: return 'T'; break; case 15: return 'M'; break; case 16: return 'C'; break; case 17: return 'Q'; break; case 18: return 'G'; break; case 19: return 'Z'; break; case 20: return 'N'; break; case 21: return 'P'; break; case 22: return 'Y'; break; case 23: return 'F'; break; case 24: return 'V'; break; case 25: return 'O'; break; case 26: return 'E'; break; }

}

char rotorIII(int a) { switch(a) { case 1: return 'B'; break; case 2: return 'D'; break; case 3: return 'F'; break; case 4: return 'H'; break; case 5: return 'J'; break; case 6: return 'L'; break; case 7: return 'C'; break; case 8: return 'P'; break; case 9: return 'R'; break; case 10: return 'T'; break; case 11: return 'X'; break; case 12: return 'V'; break; case 13: return 'Z'; break; case 14: return 'N'; break; case 15: return 'Y'; break; case 16: return 'E'; break; case 17: return 'I'; break; case 18: return 'W'; break; case 19: return 'G'; break; case 20: return 'A'; break; case 21: return 'K'; break; case 22: return 'M'; break; case 23: return 'U'; break; case 24: return 'S'; break; case 25: return 'Q'; break; case 26: return 'O'; break; } }

char rotorV(int a) { switch(a) { case 1: return 'V'; break; case 2: return 'Z'; break; case 3: return 'B'; break; case 4: return 'R'; break; case 5: return 'G'; break; case 6: return 'I'; break; case 7: return 'T'; break; case 8: return 'Y'; break; case 9: return 'U'; break; case 10: return 'P'; break; case 11: return 'S'; break; case 12: return 'D'; break; case 13: return 'N'; break; case 14: return 'H'; break; case 15: return 'L'; break; case 16: return 'X'; break; case 17: return 'A'; break; case 18: return 'W'; break; case 19: return 'M'; break; case 20: return 'J'; break; case 21: return 'Q'; break; case 22: return 'O'; break; case 23: return 'F'; break; case 24: return 'E'; break; case 25: return 'C'; break; case 26: return 'K'; break; } }

char rotorIV(int num) { switch(num) { case 1: return 'E'; break; case 2: return 'S'; break; case 3: return 'O'; break; case 4: return 'V'; break; case 5: return 'P'; break; case 6: return 'Z'; break; case 7: return 'J'; break; case 8: return 'A'; break; case 9: return 'Y'; break; case 10: return 'Q'; break; case 11: return 'U'; break; case 12: return 'I'; break; case 13: return 'R'; break; case 14: return 'H'; break; case 15: return 'X'; break; case 16: return 'L'; break; case 17: return 'N'; break; case 18: return 'F'; break; case 19: return 'T'; break; case 20: return 'G'; break; case 21: return 'K'; break; case 22: return 'D'; break; case 23: return 'C'; break; case 24: return 'M'; break; case 25: return 'W'; break; case 26: return 'B'; break;

}

return '0';

}

char rotorI(int num) { switch(num) { case 1: return 'E'; break; case 2: return 'K'; break; case 3: return 'M'; break; case 4: return 'F'; break; case 5: return 'L'; break; case 6: return 'G'; break; case 7: return 'D'; break; case 8: return 'Q'; break; case 9: return 'V'; break; case 10: return 'Z'; break;

    case 11:
        return 'N';
    break;
    case 12:
        return 'T';
    break;
    case 13:
        return 'O';
    break;
    case 14:
        return 'W';
    break;
    case 15:
        return 'Y';
    break;
    case 16:
        return 'H';
    break;
    case 17:
        return 'X';
    break;
    case 18:
        return 'U';
    break;
    case 19:
        return 'S';
    break;
    case 20:
        return 'P';
    break;
    case 21:
        return 'A';
    break;
    case 22:
        return 'I';
    break;
    case 23:
        return 'B';
    break;
    case 24:
        return 'R';
    break;
    case 25:
        return 'C';
    break;
    case 26:
        return 'J';
    break;

}

return '0';

}

char reflectorB(int num) { switch(num) { case 1: return 'Y'; break; case 2: return 'R'; break; case 3: return 'U'; break; case 4: return 'H'; break; case 5: return 'Q'; break; case 6: return 'S'; break; case 7: return 'L'; break; case 8: return 'D'; break; case 9: return 'P'; break; case 10: return 'X'; break; case 11: return 'N'; break; case 12: return 'G'; break; case 13: return 'O'; break; case 14: return 'K'; break; case 15: return 'M'; break; case 16: return 'I'; break; case 17: return 'E'; break; case 18: return 'B'; break; case 19: return 'F'; break; case 20: return 'Z'; break; case 21: return 'C'; break; case 22: return 'W'; break; case 23: return 'V'; break; case 24: return 'J'; break; case 25: return 'A'; break; case 26: return 'T'; break;

}

return '0';

}

char reflectorA(int num) { switch(num) { case 1: return 'E'; break; case 2: return 'J'; break; case 3: return 'M'; break; case 4: return 'Z'; break; case 5: return 'A'; break; case 6: return 'L'; break; case 7: return 'Y'; break; case 8: return 'X'; break; case 9: return 'V'; break; case 10: return 'B'; break; case 11: return 'W'; break; case 12: return 'F'; break; case 13: return 'C'; break; case 14: return 'R'; break; case 15: return 'Q'; break; case 16: return 'U'; break; case 17: return 'O'; break; case 18: return 'N'; break; case 19: return 'T'; break; case 20: return 'S'; break; case 21: return 'P'; break; case 22: return 'I'; break; case 23: return 'K'; break; case 24: return 'H'; break; case 25: return 'G'; break; case 26: return 'D'; break;

}

return '0';

}

char reflectorC(int num) { switch(num) { case 1: return 'F'; break; case 2: return 'V'; break; case 3: return 'P'; break; case 4: return 'J'; break; case 5: return 'I'; break; case 6: return 'A'; break; case 7: return 'O'; break; case 8: return 'Y'; break; case 9: return 'E'; break; case 10: return 'D'; break; case 11: return 'R'; break; case 12: return 'Z'; break; case 13: return 'X'; break; case 14: return 'W'; break; case 15: return 'G'; break; case 16: return 'C'; break; case 17: return 'T'; break; case 18: return 'K'; break; case 19: return 'U'; break; case 20: return 'Q'; break; case 21: return 'S'; break; case 22: return 'B'; break; case 23: return 'N'; break; case 24: return 'M'; break; case 25: return 'H'; break; case 26: return 'L'; break;

}

return '0';

}

char rotorVI(int num) { switch(num) { case 1: return 'J'; break; case 2: return 'P'; break; case 3: return 'G'; break; case 4: return 'V'; break; case 5: return 'O'; break; case 6: return 'U'; break; case 7: return 'M'; break; case 8: return 'F'; break; case 9: return 'Y'; break; case 10: return 'Q'; break; case 11: return 'B'; break; case 12: return 'E'; break; case 13: return 'N'; break; case 14: return 'H'; break; case 15: return 'Z'; break; case 16: return 'R'; break; case 17: return 'D'; break; case 18: return 'K'; break; case 19: return 'A'; break; case 20: return 'S'; break; case 21: return 'X'; break; case 22: return 'L'; break; case 23: return 'I'; break; case 24: return 'C'; break; case 25: return 'T'; break; case 26: return 'W'; break;

}

return '0';

}

char rotorVII(int num) { switch(num) { case 1: return 'N'; break; case 2: return 'Z'; break; case 3: return 'J'; break; case 4: return 'H'; break; case 5: return 'G'; break; case 6: return 'R'; break; case 7: return 'C'; break; case 8: return 'X'; break; case 9: return 'M'; break; case 10: return 'Y'; break; case 11: return 'S'; break; case 12: return 'W'; break; case 13: return 'B'; break; case 14: return 'O'; break; case 15: return 'U'; break; case 16: return 'F'; break; case 17: return 'A'; break; case 18: return 'I'; break; case 19: return 'V'; break; case 20: return 'L'; break; case 21: return 'P'; break; case 22: return 'E'; break; case 23: return 'K'; break; case 24: return 'Q'; break; case 25: return 'D'; break; case 26: return 'T'; break;

}

return '0';

}

char rotorVIII(int num) { switch(num) { case 1: return 'F'; break; case 2: return 'K'; break; case 3: return 'Q'; break; case 4: return 'H'; break; case 5: return 'T'; break; case 6: return 'L'; break; case 7: return 'X'; break; case 8: return 'O'; break; case 9: return 'C'; break; case 10: return 'B'; break;

    case 11:
        return 'J';
    break;
    case 12:
        return 'S';
    break;
    case 13:
        return 'P';
    break;
    case 14:
        return 'D';
    break;
    case 15:
        return 'Z';
    break;
    case 16:
        return 'R';
    break;
    case 17:
        return 'A';
    break;
    case 18:
        return 'M';
    break;
    case 19:
        return 'E';
    break;
    case 20:
        return 'W';
    break;
    case 21:
        return 'N';
    break;
    case 22:
        return 'I';
    break;
    case 23:
        return 'U';
    break;
    case 24:
        return 'Y';
    break;
    case 25:
        return 'G';
    break;
    case 26:
        return 'V';
    break;

}

return '0';

}

Built With

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  • c++
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