A strategy of software protection based on multi-watermarking embedding

By introducing the current research status in software protection, the paper propose a multi-watermarking embedding algorithm to protect the whole software. The watermark information is separated at first and encrypted with the hyper-chaotic sequence, then each of the watermark is embedded into the core location of the program by the mapping fuction. Between the watermarks the effective tamper-proofing is established, if the tampering occurred, the watermark should sense and terminate the program immediately to protect the program. The experiments indicate its robustness is stronger.