| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an IC card with high feasibility capable of switching a code section of application mounted on the IC card, while maintaining its security, and to provide an IC card program thereof and a switching method of the code section. <P>SOLUTION: The switching method of a code section can switch a code section C2 of application A2 memorized in a nonvolatile memory of the IC card 10 into a new code C2'. Data D2 of the application A2 is encoded by a code key K2 so as to be decoded only by a card publisher, and is output outward from the IC card 10. the application A2 is deleted from the nonvolatile memory, a new application A2' including the new code C2' and the data D2 is input to the IC card 10, and it is written in the nonvolatile memory. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
