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Research on Provable Data Possession in Cloud Computing Environment

Author: LiuZuoZuo
Tutor: GuDaWu
School: Shanghai Jiaotong University
Course: Computer System Architecture
Keywords: Cloud Computing Storage proved Provable data held by Dynamic updates File Sharing
CLC: TN918.2
Type: Master's thesis
Year: 2011
Downloads: 65
Quote: 0
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Abstract


\In order to ensure the integrity of user data files stored in the cloud server , we propose a public key cryptosystem based dynamic provable data held by the program , allowing users to complete their files stored in untrusted cloud servers checksum dynamically updated . Our program has two roles of users and service providers , and users pay a fee to obtain the storage space on the service providers , and files are stored up , the service providers are required to faithfully preserve the user's files , do not allow any unauthorized authorized to modify and delete users intermittently to service providers initiated inquiries required to prove that the file has not been tampered with , the service provider and returns faithfully hold the evidence in the file . Users can also dynamically update the file , after the update was still able to prove the integrity of the file . Compared with the previous program , our program is to achieve the same functionality , complexity and communication complexity is reduced from O (logn) O ( 1 ) will be calculated on the basis of equal security and assurance . At the same time , we also program extended to the context of multi-user shared files , support for multiple users to the same file server access, check and update . We have written a Demo system , conducted experiments on various parts of the program , the experimental results show that our program is really unlimited file update and integrity check , and overhead storage, computing, communications and basic theoretical results consistent.

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CLC: > Industrial Technology > Radio electronics, telecommunications technology > Communicate > Confidentiality of communications and communications security > Password, machine
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