Chengjun Cai

TL;DR: This work replaces the central server with a carefully-designed smart contract and constructs a decentralized privacy-preserving search scheme where the data owner can receive correct search results with assurance and without worrying about potential wrongdoings of a malicious server.

TL;DR: This paper proposes an encrypted decentralized storage architecture that can support trustworthy and private keyword search functions and integrates an efficient dynamic searchable encryption scheme to the protocols as an instantiation to lower the blockchain overhead.

TL;DR: This work utilizes the smart contract to record the logs of encrypted search (aka evidence) on the blockchain, and devise a fair protocol to handle disputes and issue fair payments, and craft a concrete scheme that preserves encrypted search capability and enforces ecosystem healthiness.

TL;DR: Tackling the challenges of monetization fairness and (on-chain) knowledge confidentiality, the customized knowledge monetization design well respects the interests of knowledge seller and requester, with full support of transparency, streamlined processing, and automatic quality-aware rewards for clients.

TL;DR: This paper proposes a protocol that is seamlessly incorporated to encrypted search in distributed network to attest and monitor nodes and conducts robustness analysis against several potential attacks, and performs performance and overhead evaluation on the proposed protocol.