Towards Blockchain-Based Secure Storage and Trusted Data Sharing Scheme for IoT Environment

Nowadays, cloud-based storage systems play a vital role in IoT data storage, processing, and sharing. Despite its contribution, the current architecture may cause severe leakage or jeopardize user privacy. Meanwhile, heavily relies on trusted third-party auditor (TPA) runs centralized control manner. However, TPA not be completely trustworthy entity, single point of failure might system to collapse. Fortunately, with advent blockchain technology, decentralized model has gained popularity. A successfully eradicates rule TPA, solves problem failure, many advantages over architecture, such as low prices high throughput. This study offers blockchain-based distributed sharing scheme that provides end-to-end encryption fine-grained access control. In our proposed IoTChain model, permission is based attribute-based (A-BAC) policy by employing Ethereum an auditable layer. Smart contracts are tailored for which combines interplanetary file (IPFS). We used advanced standard (AES) elliptic curve Diffie-Hellman key exchange protocol secret between owners users. Also, proof-of-work (PoW) consensus mechanism replaced proof-of-authority (PoA) minimize transaction cost boost Additionally, solution been tested official test network Rinkeby, results demonstrate approach realistic economical data.