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

Authors: Jia Yu; Rong Hao; Xiangguo Cheng

Addresses: College of Information Engineering, Qingdao University, Qingdao 266071, China; State Key Laboratory of Information Security, Institute of Information Engineering, Chinese Academy of Sciences, Beijing 100093, China ' College of Information Engineering, Qingdao University, Qingdao 266071, China ' College of Information Engineering, Qingdao University, Qingdao 266071, China

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.

Keywords: verifiable MSS; multi-secret sharing; verifiable secret sharing; VMSS; security analysis.

DOI: 10.1504/IJSN.2013.058147

International Journal of Security and Networks, 2013 Vol.8 No.4, pp.200 - 206

Accepted: 03 Sep 2013
Published online: 08 Dec 2013 *

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