Secure separable reversible data hiding of halftone image in blockchain  

作　　者：Ding Haiyang 

机构地区：[1]College of Information Engineering,Beijing Institute of Graphic Communication,Beijing 102600,China [2]Information Security Center,Beijing University of Posts and Telecommunications,Beijing 100876,China

出　　处：《The Journal of China Universities of Posts and Telecommunications》2022年第2期85-96,共12页中国邮电高校学报（英文版）

基　　金：supported by the Beijing City Board of Education Science and Technology Key Project(KZ201710015010);the Scientific Research Common Program of Beijing Municipal Commission of Education(KM202110015004);the Beijing Institute of Graphic Communication Excellent Course Construction Project for Postgraduates(21090121021);the Beijing Institute of Graphic Communication Project(Ec202007,Eb202004);the Initial Funding for the Doctoral Program of Beijing Institute of Graphic Communication(27170120003/022)。

摘　　要：To realize the distributed storage and management of a secret halftone image in blockchain,a secure separable reversible data hiding(RDH)of halftone image in blockchain(SSRDHB)was proposed.A secret halftone image can be used as the original image to generate multiple share images which can be distributed storage in each point of blockchain,and additional data can be hidden to achieve management of each share image.Firstly,the secret halftone image was encrypted through Zu Chongzhi(ZUC)algorithm by using the encryption key(EK).Secondly,the method of using odd or even of share data was proposed to hide data,and a share dataset can be generated by using polynomial operation.Thirdly,multiple share images can be obtained through selecting share data,and different additional data can be hidden through controlling odd or even of share data,and additional data can be protected by using data-hiding key(DK).After sharing process,if the receiver has both keys,the halftone image can be recovered and additional data can be revealed,and two processes are separable.Experiment results show that multiple share images hidden additional data can be obtained through SSRDHB,and the halftone image can be recovered with 100%by picking any part of share images,and one additional data can be revealed with 100%by picking any one share image.

关 键 词：separable reversible data hiding(RDH) halftone image secret sharing blockchain additional data 

分 类 号：TP311.13[自动化与计算机技术—计算机软件与理论] TP309.7[自动化与计算机技术—计算机科学与技术]