Cell phone sms RSA MD5

Very small app able to send and receive encrypted sms, and store a few parameters. Needs to work on any standard cell phone. Each app is unique, with its own rsa hardcoded keys and parameters, and is stored on the sim. "computer-like" specs (of course, I did it in 5 minutes, so it probably has bugs.... Feel free to change for the better, as long as the idea remains unchanged): #=============================================================================== Hardcoded Variables: #=============================================================================== default_password = "xxxxxxxxxxxxxxxxxxxxx" default_send_to_phone="123456" private_key="kkkkkkkkkk" public_key="pppppppp" this_phone = "789456" this_emei = "2068972354566" #=============================================================================== Login: #=============================================================================== password = ask_for_password() attempts = retrieve_from_storage(attempts) || 0 time = retrieve_from_storage(time) || now can_continue = 1 if attempts > 3 if time < now + 6 hours attempts=stored_attempts + 1 time=now can_continue=0 else previous_attempts = attempts store(previous_attempts) attempts = 0 end end if can_continue == 1 good_password = retrieve_from_storage(password) || default_password if MD5(password) == good_password then attempts = 0 time = now else attempts=stored_attempts + 1 time=now can_continue=0 end end store(attempts) store(time) if can_continue == 1 show_main_menu else password = ask_for_password() end #=============================================================================== show_main_menu: #=============================================================================== -Send Command -Read Messages -Exit Application #=============================================================================== Send Command: #=============================================================================== if retrieve_from_storage(time) + 5 minutes > now command1=(field1, label1, max_size1) command2=(field2, label2, max_size2) .... command = input_choice(command1, command2, command3, ... ) if command == command1 value1 = input_text_field(field1, label1, max_size1) value2 = input_text_field(field2, label2, max_size2) ..... else if command == command2 .... end if send_sms_button message=phone=this_phone&emei=this_emei&command=command1&field1=value1...& send_to_phone = retrieve_from_storage(send_to_phone) || default_send_to_phone send_sms( send_to_phone, RSA_encode( message, public_key) ) end time=now store(time) show_main_menu else Login end #=============================================================================== Read Messages: #=============================================================================== if retrieve_from_storage(time) + 5 minutes > now messages = select_last_5_messages_from_inbox_beginning_with("_+_") for message in messages decoded_message = RSA_decode( [login to view URL](/_+_/, "") , private_key ) display(decoded_message) end time=now store(time) else Login end