function login()
 if _G.PASS_HASH and _G.PASS_SALT then
  io.write("\f")
  io.write(_G.MOTD.."\nPassword: ")
  local pt = io.read()
  if pt then
   if sha.sha256(pt.._G.PASS_SALT) == _G.PASS_HASH then
    return true
   end
  end
  return false
 end
 return true
end