基于云计算服务的安全多方计算

云计算的出现及迅速发展，使得安全多方计算模型面临结构上的变化.云计算资源的引入，使得安全计算的计算任务、参与方、计算执行的外部环境变得多样和复杂.利用强大的云计算资源来设计、实施安全多方计算协议，成为安全多方计算领域一个新的研究课题.云计算环境为安全多方计算的实施提供了条件，同时但也带来新的挑战.对云环境下通用安全多方计算协议的研究进行了梳理和分析，给出一个较为清晰的发展脉络，对一些基于云的典型特定安全多方计算协议做了简要介绍，并对目前云中安全多方计算存在的问题及未来研究的方向提出了自己的见解.

Secure Multiparty Computation in Cloud Computing

The emergence and rapid development of cloud computing structurally change the computation models of secure multi-party computation. In cloud environment, the computation task, the participants and the external environment of secure multi-party computation are becoming diversified and complicated. Using huge cloud resources to design and implement the secure multi-party computation protocol becomes a new research area. Cloud computing provides the resources to implement secure multi-party computation protocols, meanwhile, it also brings new challenge. In this paper, a survey for generalmulti-party computation in cloud setting, as well as some specific cloud-based secure multi-party computation protocols are given. Also, our opinions of the problem in the current researches and the directions for future works on multi-party computation in cloud setting are proposed.