A group signature scheme with improved efficiency
发表信息
作者
- Jan Camenisch
- Markus Michels
笔记
The concept of group signatures allows a group member to sign messages anonymously on behalf of the group. However, in the case of a dispute, the identity of a signature’s originator can be revealed by a designated entity. In this paper we propose a new group signature scheme that is well suited for large groups, i.e., the length of the group’s public key and of signatures do not depend on the size of the group. Our solution based on a variation of the RSA problem is more efficient than previous ones satisfying these requirements.
群签名的概念允许群体成员代表该群体匿名签署消息。然而，在发生争议的情况下，可以通过指定实体揭示签名发起者的身份。本文提出了一种新的群签名方案，非常适合大规模群体，即群体的公钥和签名的长度不依赖于群体的规模。我们基于RSA问题的变体所提出的解决方案比之前满足这些要求的方案更为高效。