中文摘要：

为了克服现有可信平台认证方法的缺陷,提出了一种基于单项累加器的新型可信平台匿名认证方案,并构造了具体方法.新方案利用环签名技术的匿名性实现直接匿名认证,同时运用单向累加器技术将环签名成员信息累加,使得签名环长度固定,不会随着环规模增大而增大.验证时,有效降低了hash计算和加密、解密运算的次数,提高了认证的效率.通过与典型的环签名方案的比较,表明该方法所需的空间复杂度和时间复杂度更小,并弥补了传统环签名方案签名长度随环规模增大而增加的缺点,在保证安全性的前提下具有较高的实现效率.

英文摘要：

Aimed at overcoming the limitations of current authentications on trusted platform,this dissertation puts forward an improved method based on one-way accumulator,and constructs its solution in detail.New solution introduces ring signature to protect client′s privacy with ring signature′s anonymity,what′s more,the ring length is fixed by the one-way accumulator which accumulates all the members′ information so that the ring won′t be too large with considerable members.During validation,the efficiency is promoted for the diminishment of the hash-compute times,encrypt-compute times and decrypt-compute times.Compared to existing ways of authentication,it indicates that new solution has lower time complexity and space complexity.At the same time,new solution guarantees anonymity and effectiveness,in addition to it makes up traditional ring-signature′s weakness mentioned above;it has high efficiency on the premise of security.