Thumbnail Secret Image Sharing in Cloud Storage

Yongqiang Yu, Xuehu Yan (), Shudong Wang, Xianhui Wang and Huan Lu
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Yongqiang Yu: College of Electronic Engineering, National University of Defense Technology, Hefei 230037, China
Xuehu Yan: College of Electronic Engineering, National University of Defense Technology, Hefei 230037, China
Shudong Wang: College of Electronic Engineering, National University of Defense Technology, Hefei 230037, China
Xianhui Wang: College of Electronic Engineering, National University of Defense Technology, Hefei 230037, China
Huan Lu: College of Electronic Engineering, National University of Defense Technology, Hefei 230037, China

Mathematics, 2022, vol. 10, issue 17, 1-16

Abstract: In recent years, the amount of data has increased explosively, which has spawned the large-scale development of cloud storage. Increasingly, individuals and enterprises store images in cloud space. The storage security of the cloud is generally guaranteed by encryption, but this can no longer meet the needs of image management and protection. In order to realize the management and loss tolerance of images, this paper proposes a thumbnail secret image sharing method. The proposed scheme combines the advantages of thumbnail-preserving encryption (TPE) and secret image sharing (SIS) with different meaningful shadows. Thumbnails can realize the visual management of stored images, and secret image sharing can realize the perfect security of stored images. The proposed scheme realizes the confidentiality, integrity, and availability of images, which are three elements of information security. Compared with TPE, our scheme not only realizes the visual management of images but also achieves loss tolerance and perfect security. Compared with SIS with different meaningful shadows, our scheme will greatly improve the sharing efficiency and reduce the consumption of computing resources. In this paper, the theoretical analysis and security proof of the proposed scheme are presented. In addition, we also conduct sufficient experiments and comparative explanations.

Keywords: cloud storage; extended secret image sharing; thumbnails; loss tolerance; shadow management (search for similar items in EconPapers)
JEL-codes: C (search for similar items in EconPapers)
Date: 2022
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