Abstract:Based on modification of time constraints in the FPGA design, a watermark-embedding scheme is proposed for protection of intellectual property rights of the system designer. A coded binary watermark sequence is used to replace the least significant digits of the time constraints in some non-critical paths. The modified time constraints lead to substantial and unique changes in the generated bit stream without altering the performance of the design, both in terms of space and time overheads and the system functionality. The embedded data can be extracted in a reverse procedure. The paper provides a scheme with zero area and low timing overheads, and a significant increase in embedding capacity in comparison with some existing techniques.
陆健峰; 王朔中. 基于时间约束的FPGA数字水印[J]. 电子与信息学报, 2004, 26(12): 1882-1887 .
Lu Jian-feng; Wang Shuo-zhong. FPGA Watermarking Based on Modification of Time Constraints. , 2004, 26(12): 1882-1887 .