Abstract
As we know that data sharing, a critical element in social networks, has the benefits of exploring important information, while also has the disadvantage of information leakage. Therefore, without the reliable third party arbitration agency, it is impossible to share information privately by distrustful multi-party. In this paper, we proposed a protocol called Quantum Secure Multi-party Private Set Intersection Cardinality (QSMS-IC), which has the capability of resisting quantum attacks. QSMS-IC, the extension of two-parity private set intersection cardinality which was proposed in Information Sciences(2016,147-158), utilizes quantum transformation, quantum measurements and quantum parallelism to solve multi-party private set intersection cardinality problems. Compared with two-party PSI-CA protocols, our proposed protocol can solve the data sharing among multi-party without the reliable third party arbitration agency. It also can be used in numerous applications and more suitable to the actual cases. For instance, large-scale social networks and privacy-preserving data ming.
Highlights
Secure multi-party computation (SMC) [1,2,3] enables three or more clients to evaluate the function without disclosing any private information about their privacy information
Private set intersection (PSI) [9, 21], a typical application of information-sharing, enables two parties with privates sets to participate in calculation of the intersection without revealing any private inputs information. in some higher privacy-preserving scenarios, such as in medical systems and social networks, private set intersection reveals too much private personal information which may be exposed in part or in whole
Private Set Intersection Cardinality (PSI-CA) [6, 7] was introduced, which can meet the requirements on prevention of revealing the specific content, and make the outputting be the cardinality
Summary
Secure multi-party computation (SMC) [1,2,3] enables three or more clients to evaluate the function without disclosing any private information about their privacy information. Due to the extensive and important application, there were some secure private set intersection cardinality protocols had been proposed [11,12,13]. In these existed protocols, most of them are classical cryptography. Our proposed QSMS-IC protocols has two clear advantages: for classical protocols it has higher security, and for existed quantum protocols, it is a real multi-party protocol, has wider applications and more practical. We present a practical and feasible quantum secure multi-party set intersection cardinality protocol, which can privately compute the intersection cardinality.
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