Write a Blackberry application for chat app

Blackberry 10 Native App. Secure chat application for blackberry 10 native only ,whit ECC encryption . Blackberry phone must create the ECC keys by first use of the app . App must be locked whit password . And there must be message experation in the app . So the message that are send and are recieved must Experate !!! On P2P or XMPP protocol.