| 摘要 |
PROBLEM TO BE SOLVED: To enhance security to a processing result in a subprogram for performing predetermined processing in response to a call instruction from a main program and returning the processing result to the main program. SOLUTION: The subprogram acquires memory information on a memory area used by a call origin program in response to the call instruction from the call origin program, decides whether the call origin program is a regular main program on the basis of the acquired memory information, and, when the call origin program is the regular main program as the result of decision, permits execution of sub processing. COPYRIGHT: (C)2007,JPO&INPIT |
