Block Chain-Based Data Audit and Access Control Mechanism in Service Collaboration

Blockchain Based Data Integrity Verification for Large-Scale IoT Data

“…The provenance auditor verifies provenance data through information in the block. Wang et al [11] proposed a decentralized model to solve the single point of trust problem in the traditional data auditing service model by collective trust. The protocol allows users to trace the history of their data.…”

“…However, neither the attacker nor the malicious server knows the private key α , so it is impossible to forge a m * j that satisfies: 1 H m * j + α P = 1 H m j + α P (11) and the proof cannot be modified. If the attackers or malicious servers delete the data m j in the cloud storage server, similar to the analysis above, it is impossible to forge a valid m * j because the private key α is unknown.…”

“…To prove the validity of our data integrity scheme (BB-DIS), we choose [9], [10] and [11] for comparative analysis, in which method [9] uses the blockchain network to store hash results directly. We call it B-DIS for short.…”

“…Based on the blockchain [10], the data shards are hashed multiple times according to Merkle tree structure, we call it BM-DIS for short. And the method in [11] is called B-DAM for short because of its proposed Blockchain based data audit mechanism. The data in the experiment were taken as the average of 30 tests.…”

“…Ethereum and Hyperledger Fabric are two popular frameworks for the implementation of blockchain network [8]. However, there is a significant scalability barrier for blockchain related applications, which limits their capability to support services with large-scale and frequent transactions, e.g., the computational and communication overhead during integrity verification for large-scale IoT data [9]- [11]. Besides, dynamicity of IoT data [12], [13] has seldom been investigated for most of the existing blockchain based data integrity methods.…”