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- Title
Reversible data hiding in encrypted JPEG image with changing the number of AC codes.
- Authors
Yuan, Yuan; Hongjie, He; Chen, Fan; Yuan, Changqi
- Abstract
A reversible data hiding (RDH) in encrypted JPEG images (JPEG-RDH-EI) with an adaptive encryption key generated by minimum coded units histogram (MCUH) is proposed. However, the marked encrypted images are vulnerable to chosen-plaintext attack (CPA) since the MCUH is unchanged during the encryption and RDH process, which allows the encryption key can be reproduced by the marked encrypted image. To improve the security of marked encrypted images, this paper changes the MCUH in the RDH process by 0-1 conversion (refers to changing the value of coefficients from 0 to 1). To reduce the file growth, this paper explores the condition that the 0-1 conversion without file growth first. Then, a histogram shift scheme with embeddable zero coefficients is designed. The experimental results show that the proposed scheme can enhance the security of marked encrypted images by changing MCUH. In addition, the proposed algorithm has a smaller file growth and higher maximum embedding capacity than the existing histogram shift schemes since it embeds additional data in zero coefficients.
- Subjects
REVERSIBLE data hiding (Computer science); IMAGE compression; JPEG (Image coding standard); HUFFMAN codes
- Publication
Multimedia Tools & Applications, 2023, Vol 82, Issue 28, p43649
- ISSN
1380-7501
- Publication type
Article
- DOI
10.1007/s11042-023-14614-8