Multifunctional integrated circuit card sets status bits corresponding to write processes indicating non-guarantee/guarantee process, so as to write received data in respective storage regions

摘要

A processor sets status bits corresponding to write processing state indicating non-guarantee/guarantee process respectively, when a command to write data without/with guarantee from a host apparatus is received. The processor writes received data to a pair of storage regions, respectively. Independent claims are included for the following: (1) Data update control method; (2) Message restoration control method; and (3) Computer readable medium storing program for data update or restoration control.