应用科学学报 ›› 2023, Vol. 41 ›› Issue (2): 197-217.doi: 10.3969/j.issn.0255-8297.2023.02.002

• 数字媒体取证与安全 • 上一篇    下一篇

基于双域联合编码和秘密共享的密文域可逆信息隐藏

翁科, 秦健豪, 宋天然, 石慧   

  1. 辽宁师范大学 计算机与信息技术学院, 辽宁 大连 116029
  • 收稿日期:2022-10-25 出版日期:2023-03-31 发布日期:2023-03-29
  • 通信作者: 石慧,副教授,研究方向为多媒体信息安全、图像处理。E-mail:shihui_jiayou@126.com E-mail:shihui_jiayou@126.com
  • 基金资助:
    国家自然科学基金项目(No.61976109,No.62006108,No.61601214);辽宁省振兴人才计划(No.XLYC2006005);辽宁省教育厅(No.WQ2020014);辽宁省科研项目(No.LJKZ0963);大连市社科院重点项目(No.2020dlsky042,No.2021dlsky027)资助

Reversible Data Hiding in Encrypted Image Based on Dual-Domain Joint Coding and Secret Sharing

WENG Ke, QIN Jianhao, SONG Tianran, SHI Hui   

  1. School of Computer and Information Technology, Liaoning Normal University, Dalian 116029, Liaoning, China
  • Received:2022-10-25 Online:2023-03-31 Published:2023-03-29

摘要: 针对如何提高可逆信息隐藏算法的安全性和嵌入容量的问题,提出了一种基于双域联合编码和密码反馈秘密共享的密文域可逆信息隐藏算法。首先,对图像进行中值边缘检测器(median-edge detector,MED)预测,计算最优水平l,并将像素分成可预测像素和不可预测像素;其次,使用双域联合编码分别在像素域和比特域上压缩辅助信息,以便提供更多的可嵌入空间;再次,使用密码反馈秘密共享技术将原始图像加密生成多个加密图像,并将辅助信息和多方的秘密数据嵌入到多个加密图像中;最后,根据提取的辅助信息,100%恢复秘密数据以及原始图像。实验结果表明,该算法显著提高了嵌入容量和安全性。

关键词: 密文域可逆信息隐藏, 双域联合编码, 秘密共享, 密码反馈, 高容量, 强安全

Abstract: A reversible data hiding scheme in encrypted image (RDHEI) based on dualdomain joint coding and secret sharing is proposed to improve the security and embedding capacity. First, the image is predicted by median-edge detector (MED) and the optimal threshold l is calculated. Pixels with different prediction errors are divided into predictable and unpredictable pixels according to the threshold. Second, to enhance the embedding capacity, the dual-domain joint coding is adopted to compress the auxiliary information on the pixel domain and bit domain, respectively. Then, the original image is encrypted to generate multiple encrypted images using the secret sharing technique based on cipher feedback, where the auxiliary information and secret data from multiple parties are embedded into the encrypted images. Finally, the embedded secret data as well as the original image are perfectly recovered based on the extracted auxiliary information. Experimental results show that the algorithm significantly improves the embedding capacity and security.

Key words: reversible data hiding in encrypted image (RDHEI), dual-domain joint coding, secret sharing, cipher feedback, high capacity, strong security

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