Advanced Password Program v1.0 (debugging stage)

-- AdvancedPasswordProgram

os.pullEvent = os.pullEventRaw -- Program cannot be terminated until run

print ("Please enter password:") -- Prompt user to enter password into console
local password = io.read()

charTyped = {} -- creating table with name "charTyped"
position = 1 -- Assigning initial table position to 1

function hideCharacter() -- Creating fucntion to hide characters for added security
  write ("*")
end

while true do -- Always loop (allows for any length password)
 event, character = os.pullEvent("char") -- If a character is pressed on the keyboard, execute the code below
  if character ~= "" then -- Checking to make sure a character has been entered, if true execute the code below
    hideCharacter()
    table.insert(charTyped, position, character) -- Inserting typed character into the table "charTyped"
    position = position + 1 -- Incrementing table position by 1
  end
end

while true do -- Always loop
  event, scancode = os.pullEvent("key") -- If a key is pressed on the keyboard, execute the code below
  if key == "28" then -- Checking to see if the key pressed was "Enter", if true execute the code below
    table.sort(charTyped) -- Sorting the table elements into numerical and alohabetical order
    local decodedPassword = table.concat(charTyped) -- Concatenating the table elements into a string and assigning it to the variable "decodedPassword"
    if decodedPassword == "497eForY" then -- Checking to see if the sorted version of the table contains the correct numbers and letters, if true execute the code below
      print ("Authorisation successful!") -- Printing the test "Authorisation successful!" to the display
      sleep(2) -- Pausing for two seconds
      rs.setOutput("left", true) -- Setting the output state of the Redstone on the left side of the computer to on
      sleep(2) -- Pausing for two seconds
      rs.setOutput("left", false) -- Setting the output state of the Redstone on the left side of the computer to off
      os.shutdown() -- Shutdown computer to add extra security by preventing a user from typing "edit startup" in the console and changing the password.
    end
  end
end