| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an IC card allowing prevention of farther unauthorized processing when not performing processing to be primarily performed. <P>SOLUTION: In this IC card sequentially executing processing divided in each of a plurality of functions based on a command from the outside, a value showing that each processing is not normally executed is set to a check byte (execution result setting information) set with an execution result in each processing divided in each function as an initial value in start of processing. When starting the processing, a value showing the normal execution of each processing is set to the check byte when normally executing target operation in each processing, it is confirmed whether a value of the check byte shows the value showing that all pieces of the processing are normally executed or not when the final processing of the respective pieces of the processing is completed, the processing is completed when showing the value showing that they are normally executed, and the function of the IC card is stopped when not showing the value showing that they are normally executed. <P>COPYRIGHT: (C)2008,JPO&INPIT |
