IC CARD, TERMINAL DEVICE, AND DATA COMMUNICATION METHOD

摘要

A data communication method includes a step of executing a predetermined command when an IC card (1a) has received a predetermined trigger signal, a step of storing the state of the IC card (1a) before transmitting a first digital content, a step of encrypting the first digital content according to key information related to the first digital content, a step of erasing the first digital content from a holder section (18) of the IC card (1a) when a commit instruction to notify that reception of the first digital content encrypted is complete is received from a transmission destination device (1b), and a step of returning to the state of the IC card (1a) when the transmission of the first digital content is interrupted.