Dynamic Multiple-Replica Provable Data Possession in Cloud Storage System

Abstract

In cloud storage scenarios, data security has received considerably more attention than before. To ensure the reliability and availability of outsourced data and improve disaster resilience and data recovery ability, important data files possessed by users must be stored on multiple cloud service providers (CSPs). However, we know that CSP is invariably not reliable. In this situation, to verify the integrity of replica files stored by users on multiple CSPs simultaneously, a new dynamic multiple-replica provable data possession (DMR-PDP) scheme is proposed. In addition, due to the importance of the tag set, we utilize vector dot products instead of using the modular power calculation in the traditional PDP scheme, which greatly reduces the calculation time and storage space usage. Moreover, a novel dynamic data structure, the divided addressversion mapping table (DAVMT), is presented and used to solve the problem of data dynamic operation. A practical experiment validates the effectiveness of our proposed scheme in the end. INDEX TERMS Cloud storage, data security, provable data possession, dynamic operation.

Outsourced Auditing With Data Integrity Verification Scheme (OA-DIV) and Dynamic Operations for Cloud Data with Multi-Copies

“…The data integrity is provided by q-Strong Diffie Hellman (q-SDH) assumptions. A PDP is presented for dynamic multiple copies of data in cloud storage [23]. The vector dot products are utilized in PDP and the dynamic data structure is presented on the basis of Divided Address Version Mapping Table (DAVMT).…”

“…The real-time scenario demands the cloud environment to be more realistic by providing support to dynamic operations that includes data insertion, updation and deletion [5][6][7][8][9][10][11]. However, most of the existing literature are based on static data and do not support dynamic operations.…”

Fine‐grained assured insertion and deletion scheme based on onion encryption in cloud storage

“…To address the threat to users' personal data in cloud services, researchers already have solutions in several areas, such as data integrity auditing 2–5 to ensure that data has not been tampered with or deleted, verifiable databases scheme (VDB) 6,7 to determine whether CSP have executed commands correctly, provable data possession 8,9 to verify data integrity and so on, but less attention is paid to data deletion. When a data owner asks a CSP to delete outsourced data, it needs to be determined whether the CSP has executed the order in good faith.…”

“…Figures 3,4,5,and 6 show the update of MIHT after a series of update operations. Figure3shows that the user inserts a new data block b 9 at the end of the leaf node h 14 , first updates the hash value of the node, and performs the update operation UpdateHash(5), then execute…”

Efficient Data Integrity Auditing Supporting Provable Data Update for Secure Cloud Storage

“…In 2015, Esiner et al [31] utilized flexlist to design an optimized DPDP scheme, which was able to hand plenty of updates simultaneously, thus improving efficiency. Yuan et al [32] studied the integrity auditing for dynamic multi-replica data that was maintained by multiple cloud data centers, and they presented a solution to hand this problem. In their protocol, the modular exponentiation was replaced by the vector dot products, thus effectively saving computational resources.…”