PROGRAM ILLEGIBLIZING DEVICE AND METHOD

摘要

A program illegiblizing device for creating an illegiblized program from which any false analyzer cannot easily acquire information to be concealed. The program illegiblizing device stores an original program containing a concealing instruction group including information to be concealed, creates processing instructions which is executed in a determined processing order and produce the same result as that by the concealing instruction group when the last processing of the processing instructions is executed, inserts the processing instructions so as to be executed in the processing order in place of the concealing instruction group during the time from the start of the original program until the concealing instruction group appears, creates at least one disguise block including a disguising instruction, and inserts the disguise block and a control instruction into the original program to perform control to bypass the disguise block.