Authentication algorithm of secure digital halftone watermark based on SM4 algorithm

2019 International Conference on Advanced Electronic Materials, Computers and Materials Engineering

无线电电子学;计算机科学;材料科学

Guo, L.^1 ; Wang, A.L.^1 ; Li, S.K.^1 ; Pang, J.P.^1 ; Xin, K.^1 ; Fan, S.X.^1 ; Liu, F.P.^1

Beijing Institute of Graphic Communication, China^1

关键词: Authentication algorithm;    Calculation process;    Commercial cipher;    Encryption algorithms;    Nonlinear changes;    Vehicle images;    Watermark information;    WLAN standards;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/563/5/052013/pdf
DOI  :  10.1088/1757-899X/563/5/052013

来源: IOP

【 摘 要 】

With the development of information technology, the problem of piracy is getting worse. In order to increase the security of watermark information, this paper has proposed a security watermark authentication algorithm based on SM4 encryption algorithms, which is embedded in the frame of the vehicle image when the watermark information is encrypted. SM4 is the block cipher standard adopted in WAPI of wlan standard in China, and then adopted by commercial cipher standard in China. It is characterized by adding nonlinear changes in the calculation process, which greatly improves the security of the algorithm. Because the watermark information is embedded in the feature points of the structure, which is relatively stable and not easy to change, so the robustness of the watermark is enhanced to a certain extent. Through the test, the algorithm can encrypt and authenticate the watermark information.