无线自组网作为自组织网络具有极大的灵活性,很多情况下有重要的用途,但是也因为其较大的灵活性,使得网络中的认证比较困难,该文结合RSA和门限签名方案论述了一种基于门限RSA签名方案的分布式CA模型,阐述了详细的颁发证书过程并分析了系统的安全性。该模型解决了在Ad hoc网络中认证困难的问题,较之由单个实体提供认证服务大大提高了安全性能。 Wireless ad hoc networks (MANETs) have great flexibility as ad hoc networks and have important applications in many cases. However, because of their greater flexibility, authentication in networks is more difficult. Based on the discussion of RSA and threshold signature schemes A distributed CA model based on the threshold RSA signature scheme is presented. The process of certificate issuance is described in detail and the security of the system is analyzed. The model solves the problem of authentication difficulties in Ad hoc networks, which greatly improves the security performance compared to providing authentication services by a single entity.