文献类型：期刊文献

英文题名：Encrypted images-based reversible data hiding in Paillier cryptosystem

作者：Jiang, Cuiling[1];Pang, Yilin[1]

机构：[1]East China Univ Sci & Technol, Sch Informat Sci & Engn, Shanghai 200237, Peoples R China

年份：2020

卷号：79

期号：1-2

起止页码：693

外文期刊名：MULTIMEDIA TOOLS AND APPLICATIONS

收录：;EI(收录号：20194407592127);WOS:【SCI-EXPANDED(收录号:WOS:000517987600028)】；

基金：The authors are grateful for the anonymous reviewers' insightful comments and valuable suggestions sincerely, which can substantially improve the quality of this study. This work is partially supported by the National Natural Science Foundation of China (No.61371150).

语种：英文

外文关键词：Reversible data hiding; Image encryption; Homomorphic public key cryptosystem; Difference expansion

摘要：Homomorphic public key technology effectively protects privacy, allowing algebraic operations directly in the cipher-text. Therefore, it has been extensively studied in the field of cloud computing. In this study, an encrypted image-based data hiding (EIRDH) algorithm with homomorphic public key cryptosystem is presented. The key contributions are these two sides. (1) An improved fast Paillier homomorphic public key cryptosystem system is proposed for encrypting image. It improves the efficiency of encryption operations greatly. (2) A difference expansion (DE) scheme is developed by exploiting the cover pixel to construct a new pair of pixels for data hiding. Compared with other methods, the experimental results show that, the proposed method has larger payload and higher stego-image quality. It accomplishes the image quality's increasing instead of general decreasing.