METHOD FOR WRITING SECRECY PROGRAM AND DEVICE THEREFOR

摘要

PROBLEM TO BE SOLVED: To evade a fear that a security program written in an ROM is analyzed by an outsider by writing only the security program in a transferred execution file in a volatile memory on an in-circuit emulator. SOLUTION: A debugger 1 transfers only a security program of an execution file for a debugger to an in-circuit emulator 2. The emulator 2 writes the transferred security program in an RAM 2b. Thus, a processing program on a debugger 1 can be executed by referring to the security program in an RAM 2b on the in-circuit emulator 2 so that the operation of the processing program on an IC card can be emulated by the debugger 1. Thus, an outsider can not analyze which place in the execution file the security program is present in.