Register authority(RA) is one of the components of public key infrastmcture(PKI), which accepts client applications and filters applications and sends official certificate applications to certificate authority(CA).

• 注册管理中心(Register Authority,RA)是公共密钥基础设施(Public Key Infrastructue,PKI)的组成部分之一,它接收客户申请, 并审批申请,把证书正式请求发送给证书授权中心(Certificate Authority,CA)。