An Efficient Smart Contract-Enabled Blockchain Framework for Data Sharing in Cloud based IoT Systems (S)

As the Internet of Things (IoT) continues to evolve, the ability to share data has become an integral aspect of cloud computing services.Nevertheless, the persistent issue of data security presents a formidable challenge within the domain.This study introduces a novel blockchain oriented data sharing architecture designed to reinforce data security while optimizing efficiency.The architecture is structured around advanced smart contracts and security mechanisms that register cloud-based data activities on a blockchain ledger.In instances of anomalous activities, the blockchain is scrutinized by a centralized cloud service to identify and hold accountable any malicious gateways.The framework employs robust authentication and secure data transmission protocols to fortify data security.Furthermore, it utilizes sophisticated yet efficient partial decryption algorithms within smart contracts to alleviate the computational load on end users.Blockchain's capability to provide traceable historical records underpins the system's ability to meet stringent data safety standards through transparent and open oversight.Empirical evidence underscores the effectiveness of the proposed system in safeguarding data exchanges across various clients while maintaining high operational efficiency.