Searching for Encrypted Data on Blockchain: An Efficient, Secure and Fair Realization

Jianzhang Chen, Haibo Tian, Fangguo Zhang

Abstract: Searchable symmetric encryption (SSE) is a research hotspot in applied cryptography, with the purpose of protecting outsourced data while enabling querying of encrypted data. However, the majority of current research focuses on the scenario in which data is stored on a single server and disregards the possibility that both the clients and servers are malicious. While several existing blockchain-based SSE schemes provide solutions to the issues above, they do not simultaneously achieve security, fairness, and decentralized storage.