一个高效的多方混合签密方案

签密是一种提供保密性和认证性的有效消息传输方式;但是当有很多消息接收者参与会话时,它的效率将变得比较低下。提出了一种多方混合签密安全模型。多方混合签密是一种在多方参与情况下,能够同时提供保密性、认证性与不可否认性的签密的通用方案。与传统方式相比较,在有多个参与者情况下,该方案将显著提高信息传输效率。首先提出了一种通用多方混合签密方案,然后给出一种具体方案;还将给出该方案在防火墙中应用的方法。

An Efficient Hybrid Signcryption Scheme for Multiple Parties

Signcryption is a confidential and authenticated way for message delivery. But it may cost expensively when the number of recipients becomes large. This paper present a new security notion called hybrid signcryption scheme for multiple parties. hybrid signcryption scheme for multiple parties is an efficient way that combine confidentiality and authenticity when communication in multiple parties. Compared to traditional security model, it can significantly improve efficiency. The paper first present a general scheme, then we present a construction of hybrid signcryption for multiple parties and discuss the application of this scheme in firewall.