WATERMARKING APPARATUS FOR PROTECTING SOFTWARE INTELLECTUAL PROPERTY RIGHTS AND APPARATUS OF EXTRACTING WATERMARK

摘要

PURPOSE: A watermarking apparatus for protecting software intellectual property rights and a watermark extraction apparatus are provided to recover watermark easily through error correction technique even though a part of the watermark is damaged, without influencing on a target program code and without increasing the size of the program and without degrading the execution speed of the program. CONSTITUTION: A watermark generation part (11) divides a main watermark into more than two by using remainder theorem of Chinese, and generates a sub watermark. A watermark insertion part (12) inserts the divided sub watermark into a program code. [Reference numerals] (10) Watermark insertion device; (11) Watermark generation part; (12) Watermark insertion part; (20) Watermark extraction part; (21) Decoding unit; (22) Sub watermark assembly part; (23) Main watermark generation part; (24) Comparison part; (30) Database