由于同时具有匿名与可追踪的良好特性,群签名有着广泛的应用,是具有中心地位的密码系统;要把群签名应用于实际中,一个非常重要的问题是如何撤销群成员的签名权利,比如出现某成员密钥丢失、被盗或退出组织等情况;综述了群签名成员撤销的基于安全性质和基于理想功能体的安全模型定义、实现群签名成员撤销的主要模型与方法及各自的代表性具体方案,对各种可撤销群签名方案的效率及其所基于的数学假设进行了比较,也综述了其它的更为灵活的成员签名权利及签名撤销方式,并提出群签名成员撤销值得进一步研究的方向. Due to the good characteristics of both anonymity and traceability, group signature has a wide range of applications and is a central cryptographic system. To apply group signature in practice, a very important issue is how to cancel the signature rights of group members, for example, Some member keys are lost, stolen or withdraw from the organization, etc .; The main models and methods of group signature members revocation based on the nature of security and the definition of the ideal function-based security model are summarized, and the representative models The specific scheme compares the efficiency of the various revocable group signature schemes and the mathematical assumptions they are based on. It also summarizes other more flexible member signature rights and the way of revocation of signatures, and proposes that the withdrawal of group signature members deserves further study The direction of