Plan B Complete

I finished up the program yesterday, and Olga is going to make the user experience for it much nicer. The system consists of two phones: a dumb relay that forwards traffic to and from a CICC and a UDP socket, and a terminal that speaks EMV over UDP (as opposed to NFC).

I had to implement a rudimentary handshake in the protocol in addition to basic APDUs in order to control the flow of data. The terminal emulator sends an "I'm ready" packet to the target IP every 6 seconds until it receives an "I'm ready" from the target, at which point it starts sending APDUs. The relay responds to a single "I'm ready" packet when a target CICC is found, and then ignores all additional "I'm ready" packets.

I'm going to start looking into using a Proxmark to emulate an NFC smart card. If we had more time, I'd like to replace the PN544 chip on the phone with one that we know the secret keys of and then modify the Android source with SEEK, so we can use a phone for card emulation. Perhaps we can utilize the Open Accessory kit and glue the Proxmark onto a phone.