Security analysis and improvement of two verifiable multi-secret sharing schemes

Authors:
Jia Yu;Rong Hao;Xiangguo Cheng
Affiliations:
College of Information Engineering, Qingdao University, Qingdao 266071, China/ State Key Laboratory of Information Security, Institute of Information Engineering, Chinese Academy of Sciences, Beij ...;College of Information Engineering, Qingdao University, Qingdao 266071, China;College of Information Engineering, Qingdao University, Qingdao 266071, China
Venue:
International Journal of Security and Networks
Year:
2013

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Abstract

Recently, some schemes about verifiable multi-secret sharing based on two-variable one-way function have been proposed. In this paper, we analyse the security of two schemes and draw a conclusion that the both schemes cannot verify whether the dealer is honest or not. We also improve these schemes to make them have the fully verifiable property.