Question

I need a c++ program for my class project.

The topic for the c++ program is On Cyber Security password cracking. please keep it easy and simple. So the professor doesn't doubt on me.

Advanced Thank you for your help.

Answer 1

Solution:

Using brute force we can crack a password by attempting multiple probablities

like for example if actual password CABD, we attempt possibilities  ACDB, ADBC, BACD, BCDA, BDAC, CABD, CBDA, CDAB, DABC, DBCA, DCBA

#include <iostream>
#include <string>
using namespace std;
//we are using brute force attack
string Brute_Force(string actual_password){
  int ascii_NUM=256; //number of possible ascii characters
  for (int c1=0; c1<ascii_NUM; c1++) {
   for (int c2=0; c2<ascii_NUM; c2++) {
    for (int c3=0; c3<ascii_NUM; c3++) {
     for (int c4=0; c4<ascii_NUM; c4++) {
      // convert each digit into char and concat into string
      string passwd_attempt = string()+(char)c1+(char)c2+(char)c3+(char)c4;
      //check if attempted password is equals to the original password
      if (passwd_attempt==actual_password) return passwd_attempt;
     }
    }
   }
  }
  //if password not found
  throw "not found";
}

Thank you, have a great day:-)