JPEG Compatible Secret Sharing Scheme with Enhanced Performance
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Wu, Xiaotian
Chen, Dingbin
Xiong, Yuyang
Yang, Ching-Nung
Yan, WeiQi
Xia, Zhihua
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Institute of Electrical and Electronics Engineers (IEEE)
Abstract
Secret leakage and DC overflow are two critical challenges in secret image sharing (SIS) for JPEG images, with the latter also leading to format incompatibility. To tackle these two issues, a systematic investigation on SIS for JPEG images is presented. The primary contribution of this paper is the design of two fundamental components, DC secret sharing and AC secret sharing, for encoding the DC and AC coefficients, respectively, of a JPEG secret image. In DC secret sharing, DCA sharing and post-processing are combined together to deal with DC components. Notably, a partial shadow-adjustable secret sharing (PSASS) mechanism and a sample-recalculate strategy are devised to prevent DC overflow. In AC secret sharing, the AC cross-segment permutation and global scrambling are adopted to disorder AC coefficients, enabling the dramatic alternation of AC block features. The ACA sharing is then employed to encode the permuted AC coefficients. Extensive experiments and comparisons confirm the effectiveness and superiority of the proposed scheme. Compared to recent methods, our approach successfully eliminates secret leakage and avoids DC overflow, thereby ensuring full compatibility with the JPEG format.
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Keywords
4606 Distributed Computing and Systems Software, 46 Information and Computing Sciences, 4604 Cybersecurity and Privacy, 0803 Computer Software, 0804 Data Format, 0805 Distributed Computing, Strategic, Defence & Security Studies, 4604 Cybersecurity and privacy, 4606 Distributed computing and systems software
Source
IEEE Transactions on Dependable and Secure Computing, ISSN: 1545-5971 (Print); 1941-0018 (Online), Institute of Electrical and Electronics Engineers (IEEE), PP(99), 1-14. doi: 10.1109/tdsc.2026.3714465
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This is the author's version of an article published in IEEE Transactions on Dependable and Secure Computing © 2026 IEEE.