报 告 人：邢朝平 教授
邢朝平，新加坡南洋理工大学数学系教授、副主任，长期从事编码、密码、代数数论等研究，是国际编码领域顶级专家，在国际顶级编码期刊发表论文近百篇，目前任包括IEEE Transactions On Information Theory在内的多个国际编码学术期刊编委。
Secure multiparty computation (MPC) was formally introduced by Andrew Yao in 1982 as secure computation between two parties. The two-party case was then generalized to multi-party by Goldreich et al. The computation is based on tools such as secret sharing of all the inputs, oblivious transfer, homomorphic encryption, and zero-knowledge proofs for ensuring that all parties behave correctly. Unlike traditional cryptographic schemes, the adversary in this model may be a participant of the computation. Therefore, a secure multi-party computation protocol must tolerate malicious behavior of participants. Over years, better multi-party schemes are proposed with regard to robustness and efficiency. MPC has wide applications in privacy preserving computation, such as decision making like voting, statistics computations. It enables to compute aggregate functions of private inputs, while hiding the inputs themselves. For example, it can be used for calculating statistics of customer data across many banks, or of patient data across many hospitals, while hiding everything except for the final desired output of the computation. In the application of voting, the identity of each individual and his/her vote can be hidden from anyone else, yet MPC ensures that each individual is able to verify that their votes are correctly recorded and contribute towards the final decision. In this talk, I will give a brief survey on secure multiparty computation.