Netinfo Security ›› 2019, Vol. 19 ›› Issue (7): 67-74.doi: 10.3969/j.issn.1671-1122.2019.07.008

• Orginal Article • Previous Articles     Next Articles

Distributed Dynamic Provable Data Possession Model Based on Flexible Length-based Authenticated Skip List

Lin HOU(), Mingjie LI, Jian XU, Fucai ZHOU   

  1. Software College, Northeastern University, Shenyang Liaoning 110169, China
  • Received:2019-04-17 Online:2019-07-19 Published:2020-05-11

Abstract:

Dynamic provable data possession (DPDP) is an important method of data integrity verification in cloud storage. However, DPDP still has some problems when applied in distributed environment, such as high cost, opacity to client and so on. Therefore, this paper uses flexible length-based authenticated skip list (FlexList) which has the advantage of DPDP dynamic updating to construct a distributed dynamic provable data possession model (D-DPDP-FlexList). This model includes three entities which are center control server, storage server and user. Center control server and some storage servers form the server-side. The internal structure of the server-side is transparent to the user and services are provided to users only through the central control server. Users don’t need to preprocess their data according to the structure of the server-side. The adoption of distributed FlexList and multiple-replica storage improves server response time and data availability. This paper also gives the formal description, interaction protocols among the entities and security analysis. Relevant tests verify the availability of the model in distributed environment.

Key words: cloud storage, provable data possession, flexible length-based authenticated skip list, integrity

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