Blockchain-Aided Privacy-Preserving Outsourcing Algorithms of Bilinear Pairings for Internet of Things Devices

Bilinear pairing is a fundamental operation that widely used in cryptographic algorithms (e.g., identity-based algorithms) to secure IoT applications. Nonetheless, the time complexity of bilinear $O(n^{3})$ , making it very time-consuming operation, especially for resource-constrained devices. Secure outsourcing has been studied recent years enable computationally weak devices securely outsource untrustworthy cloud servers. However, state-of-art often require precompute and store some values, which results storage burden In Internet Things, are generally with limited capacity. Thus, existing do not fit well. this article, we propose algorithm pairings, does precomputations. proposed algorithm, outsourcer side’s efficiency significantly improved compared executing original operation. At same time, privacy input output ensured. Also, apply Ethereum blockchain our fair payments, ensures server gets paid only when he correctly accomplished outsourced work. The theoretical analysis experimental show efficient secure.