一种新的高效的可否认源认证协议

Novel Efficient Deniable Authentication Protocol

数据源认证分为可否认的和不可否认的两种.目前,大多数研究都集中在不可否认的数据源认证,可否认的数据源认证相对较少.可否认的数据源认证能够使接收者认证数据的发送源,但却不能向第三方证实数据发送源的真实身份,这种特性对于某些特殊的应用非常重要.概述了几个具有代表性的可否认数据源认证方案,指出主要存在的问题有:交互性,低效性,安全的脆弱性等.提出了一种新的高效安全的可否认源认证协议.

Data origin authentication can be classified as deniable authentication and non-deniable authentication. In recent years, many efficient non-deniable authentication protocols have been proposed. However, much less attention is on the deniable authentication. This paper is mainly focused on the research of deniable authentication. A deniable authentication protocol enables a receiver to identify the true source of a given message, but not to prove the identity of the sender to a third party. This property is very important for many special applications over the Internet. In this paper, some typical protocols previously proposed are briefly reviewed and several disadvantages are pointed out such as interactive, less efficient and security deficiency and so on. Finally, a novel deniable authentication protocol efficient and robust in security is put forward.