标题：Security Degree of Distributed Storage Systems with Generalized Regenerating Codes
作者：Xu, Jian; Cao, Yewen; Wang, Deqiang
作者机构：[Xu, Jian; Cao, Yewen; Wang, Deqiang] Shandong Univ, Sch Informat Sci & Engn, Jinan, Peoples R China.
会议名称：9th International Congress on Image and Signal Processing, BioMedical Engineering and Informatics (CISP-BMEI)
会议日期：OCT 15-17, 2016
来源：2016 9TH INTERNATIONAL CONGRESS ON IMAGE AND SIGNAL PROCESSING, BIOMEDICAL ENGINEERING AND INFORMATICS (CISP-BMEI 2016)
关键词：distributed storage system; generalized regenerating code;; reconstruction sets; regeneration sets; security degree
摘要：Distributed storage systems (DSSs) can provide reliable access to data over individually unreliable nodes for a long period of time. Regenerating codes (RCs) are efficient at both storage and repair bandwidth, and thus are regarded as a promising option for DSSs. In this paper, the generalized RCs (GRCs) are considered, which possess the relaxed conditions on reconstruction sets and regeneration sets. Compared to traditional RCs, GRCs can provide more coding schemes and better system security degrees (SDs). The SD is inversely proportional to the probability of revealing original data file in the presence of an eavesdropper. Two different coding schemes of GRCs are provided to achieve different SDs. Compared to traditional RCs, coding schemes with different SDs are more valuable for DSSs that require different security levels. Besides, the coding schemes of GRCs can provide better SDs, and thus are more suitable for practical applications.