#include <Keypad.h>
#include <Servo.h>

Servo myservo;


char d,d1,d2,d3,d4,d5,d6,d7,d10,d11,d12,d13,d14,d15,d16,d17;

char final[8];
char given[8];

int count;

const byte ROWS = 4; 
const byte COLS = 3; 
char keys[ROWS][COLS] = {
{'1','2','3'},
{'4','5','6'},
{'7','8','9'},
{'*','0','#'}
};

byte rowPins[ROWS] = {12, 11, 10, 9};
byte colPins[COLS] = {8, 7, 6};

Keypad keypad = Keypad( makeKeymap(keys), rowPins, colPins, ROWS, COLS);



void setup() {
  myservo.attach(2);
  assign();
  
  //cipher(final);
  Serial.begin(9600);
  Serial.println( "ENTER PASSWORD");
  
  count = 0;
  myservo.write(0);
}




void loop() {
  char key = keypad.getKey();
if(key){
given[count] = key;
Serial.print(key);
count++;
}

  if (count == 8) {
    given[count] = '\n';

    
    
    int arg = unlock(given);
     

     if (arg == 1){
     myservo.write(90);
        Serial.println("  correct password");
        
        delay(5000);
        myservo.write(0);
        count = 0;
        }
        else        {
  
         Serial.println("  Incorrect password");
         count = 0;
        }

    
    
  }


}



void assign(){
  char pas[] = {'4', '4', '4', '4', '4', '4', '4', '4'};
  
  memcpy(final, pas, sizeof(final));
   
}



int unlock(char a[]){

  int iscorr = 0;
cipher(a);

 for(int blud = 0;a[blud]!='\n';blud++){

if( a[blud] == final[blud])
iscorr++;

 }
 if( iscorr == 8)
 return 1;

return 0;
 }


void cipher(char buhe[]) {
    for (int yz = 0; yz < 8; yz++) {
        buhe[yz] += 3; 

        if (buhe[yz] > '9') {
            buhe[yz] -= 10; 
        } else if (buhe[yz] < '0') {
            buhe[yz] += 10;
        }
    }
}

/*
void cipfinal(char buhe[]){
  for (int yz = 0;yz<8;yz++){
    buhe[yz] += '5';
    if (buhe[yz]>9)
    buhe[yz] -= '9';
    if (buhe[yz]<0)
    buhe[yz] += '9';
  }
}*/