可调节安全等级的多方安全计算

Secure multi-party computation of adjustable the security level

对于多方安全计算目前国内外已有许多研究成果,从安全方面去看很多解法是尽善尽美,但在实际的运行中却不尽人意。为此,本文提出了多方安全计算的一种新的安全范型,其中利用了允许部分信息泄露的可接受的安全模型.该模型是通过降低安全方面的约束来实现更好的性能。在新范例中,安全是可调整的,用户可以根据他们可接受安全的定义调整安全等级.此外,文中还定义了整篇论文中所使用的唯一的问题,即标量数乘问题。特别地证明了新范型在算法模式标准中是怎样导向实用解法的,并描述能服务目标的已有的算法模式。

At present,there are many research about secure multi-party computation In China and abroad.As for security aspect In China and abroad,many solutions are ideal,but not good at real life impelmentation.Therefore,In this paper a new paradigm is proposed for the secure multi-party computation,in which an acceptable security model that allows partial information disclosure is used.It can achieve a much better performance by lowering the restriction on the security.Moreover,in new paradigm,the security is adjustable,such that users can adjust the level of security based on their definition of the acceptable security.Furthermore,a single problem is used throughout this paper,it is defined the scalar product problem.In particular,how the new paradigm can lead to practical solutions in the computation model level is demonstrated and the existing computation models that can achieve the goal is described.