A Publicly Verifiable Multi-Secret Sharing Scheme With Outsourcing Secret Reconstruction

IEEE Access

Huidan Hu¹  Changlu Lin¹  Chin-Chen Chang²  Shaohua Tang³ 

[1] College of Mathematics and Informatics, Fujian Normal University, Fuzhou, China;Department of Information Engineering and Computer Science, Feng Chia University, Taichung, Taiwan;School of Computer Science and Engineering, South China University of Technology, Guangzhou, China;

关键词: Data confidentiality;    computation integrity;    multiple secret sharing;    outsourcing computation;    verifiable secret sharing;   

DOI  :  10.1109/ACCESS.2018.2880975

来源: DOAJ

【 摘 要 】

A publicly verifiable secret sharing (PVSS) scheme enjoys the public verification and the lower cost of communication than VSS scheme. However, the existing PVSS schemes cannot be applied in the scenarios of the devices with low computation ability and do not share the multiple secrets among all participants efficiently. In this paper, an efficient publicly verifiable multi-secret sharing scheme with outsourcing secret reconstruction is proposed. Each participant only spends a small amount of computational cost to recover multiple secrets because of the expensive burden of computation and verifiability is outsourced to the cloud service provider (CSP). Moreover, the CSP knows no information of the secrets, and the participants have the abilities to verify the returned result. We also prove that our scheme is secure under the hardness assumption of the discrete logarithm problem and the modified generalized bilinear inversion problem.

【 授权许可】

Unknown