Protecting Semantic Information Using An Efficient Secret Key
Tao Guo, Jie Han, Huihui Wu, Yizhu Wang, Bo Bob Bai, Wei Han · 2022 IEEE International Symposium on Information Theory (ISIT) · 2022
We consider a semantic cipher system, in which we protect only the semantic information of the source. The optimal tradeoff is characterized among the coding rate, the secret key rate, the semantic information leakage rate, the source reconstruction distortion, and the semantic distortion. It is shown that an efficient key with a small size suffices to protect the semantic information.