  This work includes a review of two cases study of mobile applications that
use Identity-Based Cryptography (IBC) to protect communications. It also
describes a proposal of a new mobile application that combines the use of IBC
for Wi-Fi or Bluetooth communication between smartphones, with the promising
Near Field Communication (NFC) technology for secure authentication. The
proposed scheme involves NFC pairing to establish as public key a piece of
information linked to the device, such as the phone number, so that this
information is then used in an IBC scheme for peer-to-peer communication. This
is a work in progress, so the implementation of a prototype based on
smartphones is still being improved.
