分布式多层结构PDM系统安全服务的实现

Security Services for Distributed Multi-tiers PDM System

采用分布式多层结构的PDM系统(以下简称"PDM系统")是PDM技术的主要发展方向,因此对于PDM系统的信息安全问题尤其值得研究。在ISO7489-2的基础上,将PDM系统的安全服务类别重新描述为鉴别、访问控制、数据安全、抗否认等4类后,对其结构上存在的安全隐患进行分析和研究,基于用户管理技术、加密算法和密码学协议,提出了一套完整和实用的安全服务方案。

As distributed multitiers PDM system ( or PDM system ) is leading the development of PDM technology, the security of PDM system has become a research concern. In accordance with ISO74892, we divide the security services of the system into 4 types: identification, visit control, data safety and antidenial. We have also carried out an analysis into the hidden problems with the informational security of the structure of the system. A new and overall design is proposed and discussed. This design has already been realized in a PDM system.