复杂信息系统模型研究

为保障复杂信息系统（CIS）的安全性、互操作性、可扩展性和可管理性，论文提出一个安全的CIS体系结构模型。模型采用分层的方式，把CIS划分为不同的功能模块以降低系统的复杂度。在多层中采用Web Service技术，实现互操作和可扩展。模型采用密码支撑层、安全防护与可靠性支持层保证系统不同层面的安全性与可靠性。通过系统管理层与各层交互，实现系统的可管理性。某电子政务试点示范工程案例及其网络统计数据证明模型不会影响业务系统的性能要求，模型适用于政府、军队、银行等安全级别较高的信息系统。

Study on Complicated Information System Model

In order to make complicated information system (CIS) possess the features of security, interoperability, extensibility and controllability, this paper presents a secure CIS architecture model. Using layered method, this model divides CIS into several modules and reduces system complexity. Web Service technology is widely adopted in layers to fulfill the interoperability and extensibility. This model uses Encryption Support Layer, Security Protection and Reliability Support Layer to guarantee the system security and stability in different aspects. The model uses System Management Layer to interact with all relative layers to make CIS administrable. A case study with performance analysis shows that the model can satisfy the need of e-government without interfere with the system performance. This model is apt to highly security-critical environment such as government, military and bank.