Design and Implementation of Image Copyright Protection System Based on Chinese Cryptographic Algorithms

With the sharp increase in the number of netizens, people's online life is becoming richer and richer, the behavior of stealing pictures on the Internet is more rampant, and online image infringements continue to occur, so the protection of image copyright is particularly important. This paper first introduces the relevant background knowledge of Chinese cryptographic algorithms, image copyright protection and image steganography technology; secondly, the overall design scheme of the system is proposed, including functional design, hierarchical pattern design and system flow design; then, the key technologies of the system implementation are introduced; finally, test and analyze the system. The test results show that the system can secretly write the image copyright information encrypted by the SM2 algorithm into the image through the LSB algorithm, so as to achieve the purpose of image copyright protection without affecting the beauty of the image.