NXT client for android
Message chat system

http://bbyk.sinaapp.com/temp/chat.jpg

http://bbyk.sinaapp.com/temp/encrypt.jpg

Encrypted Message
encrypt: using sender's private key and recipient's public key.
decrypt: using recipient's private key and sender's public key.
Only the sender or recipient can decode the encrypted  message.
Encryption algorithm
https://nextcoin.org/index.php?topic=727.0
Format
https://nextcoin.org/index.php/topic,2952.0.html

nextcoin.org
https://nextcoin.org/index.php/topic,797.0.html
Google Play
https://play.google.com/store/apps/details?id=org.nextcoin.nxtclient

Source
https://github.com/JunhuaLyu/Nxt-Client-For-Android