DEVICE AND METHOD FOR CODE CONTROL FLOW OBFUSCATION

摘要

PURPOSE: A device and a method for code control flow obfuscation are provided to make code control to obfuscation by adding small number of codes using indirect branch of code. CONSTITUTION: A reading unit(110) reads out instruction from a compiled file to a low-level language. A determining unit(120) determines whether the instruction is a branch instruction. In case the instruction is a branch instruction, a transform unit(130) make the branch instruction to be obfuscation to change obfuscation instruction. A storage unit(140) replaces the branch instruction to obfuscation instruction, and stores the file. The reading unit comprises a handler generating unit which generates a handler of the file and an instruction reading unit which reads out the instruction of the handler for a line.