一种轻量级认证器生成的公有云存储审计方案

Wenting Shen, Jia Yu, Rong Hao, Xu An Wang
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引用次数: 2

摘要

随着云计算技术的发展,云存储越来越受欢迎。云存储审计是一项重要的安全服务,用于为用户检查存储在云中的云数据的完整性。但是在公有云存储审计中,在云数据外包给云之前,用户生成认证器的负担非常大。为了解决这一问题,我们提出了一种轻量级认证器生成的公共云存储审计方案。我们设计了一个新的公共云存储审计框架,其中认证生成中心(Authenticators Generation Center, AGC)负责为用户生成认证。在我们提出的方案中,AGC不知道用户的真实云数据,因为它只生成盲云数据的认证器。为了减少用户端的计算负担,云可以验证AGC生成的认证符是否正确。因此,用户在生成和验证公共认证器时只消耗很少的计算量。安全性分析和性能分析表明了该方案的安全性和有效性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
A Public Cloud Storage Auditing Scheme with Lightweight Authenticator Generation
Cloud storage is becoming more and more popular with the development of cloud computing technique. Cloud storage auditing, as one important security service, is used to check the integrity of the cloud data stored in cloud for users. However, the burden for users to generate authenticators is very huge before cloud data are outsourced to cloud in public cloud storage auditing. In order to deal with this problem, we propose a public cloud storage auditing scheme with lightweight authenticator generation. We design a new framework of public cloud storage auditing, in which an Authenticators Generation Center (AGC) is in charge of generating authenticators for users. In our proposed scheme, the AGC does not know the real cloud data of users because it only generates the authenticators for blinded cloud data. To reduce the computation burden at user side, the cloud can verify whether the authenticators generated by the AGC are correct or not. As a result, the users only consume very little computation for public authenticator generation and verification. The security analysis and the performance analysis show the proposed scheme is secure and efficient.
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