The security policies include the public key infrastructure(PKI) management model based on bridge certificate authority(CA),the authentication policy based on virtual organization and the access control policy such as delegation in grid environment.

• 这些关键策略包括:基于桥接CA(认证中心)的PKI(公钥基础设施)管理方式、基于虚拟组织的认证策略、网络环境中委托授权的访问控制策略等。