基于 OT 的多方匿名身份查询协议.

Privacy information security retrieval of multi-party data sources is an urgent problem in network security. The feature of oblivious transfer technology is to ensure the data security of each participant. Therefore, this paper combined oblivious transfer technology with homomorphic encryption and symmetric encryption in cryptography to design an anonymous query protocol for multi-party data sources. Firstly, based on the idea of oblivious transfer, this paper designed a three-party anonymous query protocol, and gave the model of the protocol and the specific process of the protocol. Secondly, this paper proved and analyzed the correctness and security of the protocol. Finally, it extended the three-party anonymous query protocol to the multiparty query protocol, and it applied to the verification of blacklist users in digital product transaction, which solved the problem of malicious transaction of buyer users in the process of network security transaction. Experimental data shows that the algorithm has correct query results and high efficiency under the condition of ensuring the data security of all parties. [ABSTRACT FROM AUTHOR]