PROGRAM EXECUTION DEVICE, PROGRAM EXECUTION METHOD AND PROGRAM

摘要

PROBLEM TO BE SOLVED: To detect frauds, such analysis and tampering of a program. SOLUTION: This program execution device is program execution environment executing a tamper-resistant updating program for updating the damper resistant program, and a program composed of one or more tamper-resistant programs, the tamper-resistant program 1 has a pretamper-resistant program storing portion 3 for storing an original program, prior to providing a program with tamper resistance, and a tamper-resistant program code creating portion 6 for providing the original program stored in the pretamper-resistant program storing portion 3, with tamper resistance, and a tamper-resistant program code rewriting portion for rewriting another tamper-resistant program, created by the tamper-resistant program code creating portion 6 by the tamper-resistant program. COPYRIGHT: (C)2006,JPO&NCIPI