SECURITY PROTECTIVE DEVICE, SECURITY PROTECTING METHOD, SECURITY PROTECTION PROGRAM AND SECURITY PROTECTION INTEGRATED CIRCUIT

摘要

PROBLEM TO BE SOLVED: To solve the problem that additional processing affects a program operation speed and memory consumption when the additional processing is required for confirming that no rewriting occurs in order to prevent an illegal instruction code by buffer overflow from being executed for the protection of program operation. SOLUTION: An address space composed of an address including a termination character to be used to determine a processing end is properly generated on the basis of hardware information of a computer, and an address of a system function to be protected from illegal use is allocated to the address space to thereby prevent rewriting by buffer overflow and maintain security without deteriorating speed performance and increasing memory consumption. COPYRIGHT: (C)2009,JPO&INPIT