To resolve the security problems occurring in using the certificate for authentication and access control, we bring out a new proactive signature algorithm that solves the problem of the confidentiality and availability of CA signature private key.

• 针对对象中间件中使用数字证书实施鉴别与访问控制时存在的安全问题，给出了一个解决CA签名私钥安全性和有效性问题的主动签名算法。