EMPSI: Efficient multiparty private set intersection (with cardinality)

Yunbo Yang, Xiaolei Dong, Zhenfu Cao, Jiachen Shen, Ruofan Li, Yihao Yang, Shangmin Dou

Abstract: Multiparty private set intersection (PSI) allows several parties, each holding a set of elements, to jointly compute the intersection without leaking any additional information. With the development of cloud computing, PSI has a wide range of applications in privacy protection. However, it is complex to build an efficient and reliable scheme to protect user privacy.