International Research Journal of Education and Technology

The proliferation of Internet of Things (IoT) devices has led to an unprecedented generation of data, presenting significant oppounities for innovation and efficiency. However, the sharing of sensitive IoT data raises substantial privacy concerns. The novel approach to privacy-preserving IoT data sharing using blockchain technology. Smart contracts are employed to define and enforce access control policies, ensuring that only authorized parties can access specific IoT data. The approach eliminates the need for a centralized authority, enhancing privacy. Cloud-based storage services have been the dominating outsourcing solution for both individuals and organizations to share data digitally. Despite the advantages, users must rely on storage services for data confidentiality, data access control, user privacy, and data availability. Whereas data confidentiality can be protected by advanced encryption algorithms, the rest remain challenging. Third, a huge amount of data is daily generated and stored on a centralized party, simultaneously serving requests from many users, which may cause a collapse of the system during peak periods. To address all these concerns, we propose a privacy-preserving blockchain-based data sharing platform for the Inter Planetary File System (IPFS), a content-addressable peer-to-peer storage system

Keywords-privacy preserving,smart contracts,Encryption Alogorithms.