Title: A lattice-based designated verifier signature for cloud computing

Authors: Yongqiang Zhang; Qiang Liu; Chengpei Tang; Haibo Tian

Addresses: Guang Dong Certificate Authority Co., Ltd., Guangzhou, Guangdong, 510100, China ' Guang Dong Certificate Authority Co., Ltd., Guangzhou, Guangdong, 510100, China ' Engineering School, Sun Yat-Sen University, Guangzhou, Guangdong, 510275, China ' School of Information Science and Technology, Sun Yat-Sen University, Guangzhou, Guangdong, 510275, China

Abstract: A third party-based data storage audit service is a developing branch where a user may use its mobile devices with limited energy to trigger a third party to audit the user's data in a cloud service provider. A basic tool for a third party to check the integrity of a user's data is the designated verifier signature (DVS), which allows a designated verifier to simulate a signer's signatures. However, the cloud computing is a technique that may be used a long time in the future, the development of quantum computation shows threats to basic building blocks of cloud computing services. It is then desirable to design DVS schemes potentially secure against quantum attacks. We here give a lattice-based DVS scheme to satisfy the requirement. It is based on Lyubashevsky's signature scheme in EUROCRYPT 2012 and has a shorter signature size.

Keywords: data storage audit; cloud computing; designated verifier signature; lattice based DVS; quantum computing; quantum attacks; privacy protection; signature simulation; cloud security.

DOI: 10.1504/IJHPCN.2015.070013

International Journal of High Performance Computing and Networking, 2015 Vol.8 No.2, pp.135 - 143

Available online: 23 Jun 2015 *

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