Title:
IC CARD, IC CARD PROGRAM, AND SWITCHING METHOD OF CODE SECTION
Document Type and Number:
Japanese Patent JP2004348526
Kind Code:
A
Abstract:
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.
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.
Inventors:
NAKAGOME YUICHI
Application Number:
JP2003145948A
Publication Date:
December 09, 2004
Filing Date:
May 23, 2003
Export Citation:
Assignee:
DAINIPPON PRINTING CO LTD
International Classes:
B42D15/10; G06F1/00; G06F12/14; G06F21/10; G06F21/12; G06F21/14; G06F21/60; G06F21/64; G06K19/073; G09C1/00; (IPC1-7): G06K19/073; B42D15/10; G06F1/00; G06F12/14; G09C1/00
Attorney, Agent or Firm:
Hisao Kamada
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