Data possession audit with an implicit trusted third-party for cloud storage
Yang Yi-xian · Harbin Gongcheng Daxue Xuebao/Journal of Harbin Engineering University · 2012
In order to relieve the burden on cloud storage users caused by remote data checking,a data possession audit architecture was promoted in this paper in which a trusted hardware acted as an implicit trusted third party and carried out data possession checking(DPC) on behalf of the users.The trusted hardware also generated tamper-evident logs which enable offline audits by users.This architecture supports the features of public verification and privacy-preservation,which are therefore not required for the adopted DPC algorithms.Two implementations were given based on two different DPC algorithms,of which the experimental results show that the overheads brought by logs are insignificant,and the feasibility of a public audit is improved without sacrificing efficiency.