Help needed using MikroC with PicKit 3

//////////////////////////////////////////////////////////////////////////////
//Variable declarations

unsigned char temp;
unsigned char serial_number[8];
unsigned char key1[8];
unsigned char key2[8];
unsigned char key3[8];
unsigned char key4[8];
unsigned char key5[8];
char i;

// LCD module connections
sbit LCD_RS at RB5_bit;
sbit LCD_EN at RB4_bit;
sbit LCD_D4 at RB3_bit;
sbit LCD_D5 at RB2_bit;
sbit LCD_D6 at RB1_bit;
sbit LCD_D7 at RB0_bit;

sbit LCD_RS_Direction at TRISB5_bit;
sbit LCD_EN_Direction at TRISB4_bit;
sbit LCD_D4_Direction at TRISB3_bit;
sbit LCD_D5_Direction at TRISB2_bit;
sbit LCD_D6_Direction at TRISB1_bit;
sbit LCD_D7_Direction at TRISB0_bit;
// End LCD module connections
//////////////////////////////////////////////////////////////////////////////////////
//Constant declaration- Predefined dallas serail numbers
const unsigned char key1={0xA3,0x00,0x00,0x0F,0x2A,0xAE,0x6B,0x01};
const unsigned char key2={0xA3,0x00,0x00,0x0F,0x1A,0xBE,0x1B,0x02};      //dummy keys
const unsigned char key3={0xA3,0x00,0x00,0x0F,0x3A,0xAE,0x3B,0x03};
const unsigned char key4={0xA3,0x00,0x00,0x0F,0x4A,0xCE,0x4B,0x04};
const unsigned char key5={0xA3,0x00,0x00,0x0F,0x5A,0xDE,0x5B,0x05};

/////////////////////////////////////////////////////////////////////////////////////
//Prototypes
//void main(void);
void ReadDallasKey(void);
void CompareKey(void);

/////////////////////////////////////////////////////////////////////////////////////
void main()
{ do{
  ANSEL  = 0;                                    // Configure AN pins as digital I/O
  ANSELH = 0;
  C1ON_bit = 0;                                  // Disable comparators
  C2ON_bit = 0;

  Lcd_Init();                                    // Initialize LCD
  Lcd_Cmd(_LCD_CLEAR);                           // Clear LCD
  Lcd_Cmd(_LCD_CURSOR_OFF);                      // Turn cursor off

  ReadDallasKey();
  }
 while(1);

}

///////////////////////////////////////////////////////////////////////////////////////////////////
//ReadDallasKey-Reads serial number of scanned dallas key   (CHANGE PORT PINS)
void ReadDallasKey(void)
{
    Ow_Reset(&PORTA, 0);                         // Onewire reset signal
    Ow_Write(&PORTA, 0, 0x33);                   // Issue Read ROM command

    for(temp = 0; temp<8; temp++)
    {
      serial_number[temp] = OW_Read(&PortA, 2);      //Reads and stores 8 byte serial number
    }
    CompareKey();
}

////////////////////////////////////////////////////////////////////////////////////////////////////
//CompareKey- Compares scanned Dallas key serial number to pre-defined keys
void CompareKey(void)
{
   if (serial_number = key1||key2||key3||key4||key5)
    {
      Lcd_Out(1,1,"Authorized");
      Delay_ms(50);
      //Move Display Text
      for (i=0; i<5;i++)
      {
       Lcd_Cmd(LCD_SHIFT_RIGHT);
       Move_Delay();
      }
     }
   else
    {
     Lcd_Out(1,1,"Not");
     Lcd_Out(2,1,"Authorized");
    }
    Delay_ms(5000);
 }