Digital image scrambling and digital watermarking based on linear congruentia
Zhu Hong-xiu · Journal of Computer Applications · 2008
In order to implement the digital image security and encryption,this article proposed a kind of digital image scrambling encryption and digital watermarking technology.The authors introduce a kind of special image matrix transform-linear congruentia,generalize it to the algorithm for digital image scrambling encryption in the position space.Based on the rules of linear congruentia,the authors present a novel digital watermarking technology.The experimental results show that the algorithm satisfies the robustness requirement of digital image encryption and hiding to a certain extent.