A privacy-preserving angle equality determination protocol and its applications
Tao Geng, Bin Lv, Xixi Yan, Yan Wang · 2014
With the fast growth of the network, more and more cooperation opportunities come out in distributed systems. Privacy attracts extensive attention worldwide. Secure Multi-party Computation (SMC) plays an important role in keep information privacy when cooperating to use each other's data. Privacy-Preserving Computational Geometry is a new research topic in SMC. In this paper, we devote to investigating the solutions to some secure geometry problems in a cooperative environment. With the help of secure two-party scalar product protocol and secure comparison protocol, two privacy-preserving angle equivalence determination protocol are proposed. At the same time, the correctness and security are also discussed. With the aid of privacy-preserving angle equivalence determination protocols, a four-node on same circle determination problem is solved.