Ic card, terminal device, and data communications method

A terminal which transmits first digital contents stored in an IC card to a destination device, comprising:

• a controller configured to output a predetermined trigger signal to the IC card, based on an input operation signal;
• wherein:
• an execution processor of the IC card is configured to execute a predetermined command in response to the predetermined trigger signal;
• and
• the predetermined command executed by the execution processor causes the execution processor to store a state of the IC card before transmission of the first digital contents;
• causes an encryption processor of the IC card to perform an encryption process on the first digital contents, based on key information associated with the first digital contents;
• deletes the first digital contents from a holder of the IC card when a commit instruction indicating completion of a reception process on the encrypted first digital contents is received from the destination device;
• and performs a return process to the state of the IC card stored in the execution processor when a transmission process on the first digital contents is interrupted.

A data communications method of transmitting first digital contents stored in an IC card to a destination device, comprising the steps of:

• executing a predetermined command when the IC card receives a predetermined trigger signal;
• storing a state of the IC card before transmission of the first digital contents;
• performing an encryption process on the first digital contents, based on key information associated with the first digital contents;
• deleting the first digital contents from a holder of the IC card when a commit instruction indicating completion of a reception process on the encrypted first digital contents is received from the destination device;
• and
• performing a return process to the stored state of the IC card when a transmission process on the first digital contents is interrupted.