Password_strength_checker.cpp

#include <iostream>
#include <conio.h>
#include <dos.h>
#include <windows.h>
#include <time.h>
#include <string.h>

using namespace std;

HANDLE console = GetStdHandle(STD_OUTPUT_HANDLE);
COORD CursorPosition;

void gotoxy(int x, int y)
{
    CursorPosition.X = x;
    CursorPosition.Y = y;
    SetConsoleCursorPosition(console, CursorPosition);
}

void drawBorder(int x=0, int y=0)
{
    char v = 186; // vertical
    char h = 205; // horizontal
    char tr = 187; // top right border
    char br = 188; // bottom right border
    char tl = 201; // top left border
    char bl = 200; // bottom left border
    int width = 30;
    int height = 3;

    for( int i=1; i<=height; i++ )
    {
        for( int j=1; j<=width; j++ )
        {
            gotoxy(j+x,i+y);
            if( i==1 && j==1 )
                cout<< tl;
            else if( i==height && j==1 )
                cout<< bl;
            else if( i==1 && j==width )
                cout<< tr;
            else if( i==height && j==width )
                cout<< br;
            else if( i==1 || i==height )
                cout<< h;
            else if( j==1 || j==width )
                cout<< v;
        }
    }
}

int main()
{
    srand((unsigned) time(NULL));

    system("cls");

    char password[21];
    int length;

    char op;
    do
    {
        system("cls");

        cout<<"±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±"<<endl;
        cout<<endl;
        cout<<"\t\t  ±±±±± "<<endl;
        cout<<"\t\t  ±   ± "<<endl;
        cout<<"\t\t±±±±±±±±±"<<endl;
        cout<<"\t\t±±±± ±±±±"<<endl;
        cout<<"\t\t±±±±±±±±±"<<endl;

        cout<<endl;
        cout<<"        PASSWORD  STRENGTH  CHECKER      "<<endl;
        cout<<"±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±"<<endl<<endl;

        cout<<endl<<"\tEnter Password: ";
        cin>> password;

        char pass[21] = "";
        int excess = strlen(password) - 6;
        int baseScore = 50;

        int numUpper = 0;
        int numSymbol = 0;
        int numLower = 0;
        int numDigit = 0;

        int bonusExcess = 3;
        int bonusUpper = 4;
        int bonusNumbers = 5;
        int bonusSymbols = 5;
        int bonusCombo = 0;
        int bonusFlatLower = 0;
        int bonusFlatNumber = 0;

        int i;
        for( i=0; i<strlen(password); i++ )
        {
            if( password[i] >= 48 && password[i] <= 57 )   // 0-9
            {
                numDigit++;
            }
            if( password[i] >= 97 && password[i] <= 125 )  // a-z
            {
                numLower++;
            }
            if( password[i] >= 65 && password[i] <= 90 )  // A-Z
            {
                numUpper++;
            }
            if( password[i] >= 33 && password[i] <= 47 )  //symbols
            {
                numSymbol++;
            }
        }

        if (numUpper>0 && numDigit>0 && numSymbol>0)
        {
            bonusCombo = 25;
        }

        else if ((numUpper>0 && numDigit>0) || (numUpper>0 && numSymbol>0) || (numDigit>0 && numSymbol>0))
        {
            bonusCombo = 15;
        }

        int score = baseScore + (excess*bonusExcess) + (numUpper*bonusUpper) +
                    (numDigit*bonusNumbers) + (numSymbol*bonusSymbols) +
                    bonusCombo + bonusFlatLower + bonusFlatNumber;

        gotoxy(8,14);
        cout<<"Checking Password Strength...";
        gotoxy(8,15);
        for(int i=0; i<27; i++)
        {
            cout<<(char)176;
            Sleep(100);
        }

        drawBorder(7,17);

        gotoxy(10,19);
        if (score<50)
        {
            cout<<"Password Status: Weak";
        }
        else if (score>=50 && score<75)
        {
            cout<<"Password Status: Average";
        }
        else if (score>=75 && score<100)
        {
            cout<<"Password Status: Strong";
        }
        else if (score>=100)
        {
            cout<<"Password Status: Secure";
        }

        gotoxy(9,23);
        cout<<"Do you want to generate password again (y/n): ";
        op = getch();
    }
    while(op=='y' || op=='Y');

    return 0;
}