云存储数据完整性验证  

Verification of Data Integrity in Cloud Storage

作　　者：杨秀华 梅圣民[2] 李玲[2] 张海蓉[2] YANG Xiuhua;MEI Shengmin;LI Ling;ZHANG Hairong(Big Data and Network Information Center,Jilin University,Changchun 130012,China;College of Communication Engineering,Jilin University,Changchun 130012,China)

机构地区：[1]吉林大学大数据和网络管理中心,长春130012 [2]吉林大学通信工程学院,长春130012

出　　处：《吉林大学学报（信息科学版）》2022年第6期1003-1008,共6页Journal of Jilin University（Information Science Edition）

基　　金：吉林省工业技术研究与开发专项基金资助项目(2019C052-6);吉林省科技发展计划产业基金资助项目(20190302073GX)。

摘　　要：为使用户了解云存储文档的完整性,提出基于消息认证码的数据可取回性证明方案M-POR(Proof of Retrievability-Based Message Authentication Codes),消息认证码作为验证信息由数据块生成,不但可以验证数据完整性,而且具有定位错误数据块的特点。原始文件冗余编码后上传到服务器。用户通过挑战-响应-验证算法验证数据完整性。在编码过程中引入纠删码,如果错误数据小于阈值,可以通过冗余数据修复错误数据。性能分析证明M-POR方案能提供数据完整性证明,并具有较低的存储成本和计算成本。In order to enable users to understand the integrity of cloud documents, a new retrievability proof scheme M-POR(Proof of Retrievability-Based Message Authentication Codes) is proposed based on MACs(Message Authentication Codes). The MACs are generated by data blocks as authenticators, which can verify data integrity and locate the error data block. An original document is uploaded to the cloud server after encoding. Users can verify data integrity by using challenge-response-verification algorithms. The error-correcting code is introduced in encoding. If the error data is less than the threshold, the data can be recovered. Performance analysis shows that M-POR scheme can provide data integrity proof, and has low storage cost and calculation cost.

关 键 词：数据完整性 可取回性证明 消息认证码 云存储 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]