多主体证书收集系统模型及优化方法  

Modeling and Optimizing to Certification Collection System of Multiagent

作　　者：卫星[1,2] 张建军[2,3] 刘磊[2] 

机构地区：[1]合肥工业大学计算机与信息学院,合肥230009 [2]合肥工业大学计算机科学与技术博士后科研流动站,合肥230009 [3]教育部安全关键工业测控技术工程研究中心,合肥230009

出　　处：《电子测量与仪器学报》2012年第7期652-657,共6页Journal of Electronic Measurement and Instrumentation

基　　金：国家自然科学基金资助项目(60873003);广东省教育部产学研结合课题(2010B090400332)

摘　　要：以支持信任链的快速重建为对象,研究面向多移动主体的信任证书收集模型及其优化问题。首先给出了实体、证书以及角色关系的形式化定义和级联信任的拓扑结构,随后详细阐述了基于开放服务网关规范中间件技术的证书收集系统软件模型,其核心为可在网络中跨域迁移的主体组件,并针对多主体协作过程中影响系统性能发挥的两类动态行为:寻径与繁殖,分别提出了基于改进旅行商问题的求解方法和两种方式繁殖原理的优化策略。最后通过Monte-Carlo仿真实验证明了模型和优化方法的有效性。Focusing on the quick restoration of trust chains, a new collection system prototype for certifications of services on the heterogeneous domains and optimization strategies was proposed. The entities, certifications and roles were defined with formalization, meanwhile the authorizations＇ cascade transmittal was described as directed acyclic graph. The prototype of collection system was based on OSGi middleware, where agents as core components dynamically traveled among entities with centralized management. The agents＇ travelling route optimization was given, which came from improved TSP problem solution. The single division and bilateral propagation are introduced for network loading balance with rational agents quantities, which are simulated with Monte-Carlo and the results conform that off-springs from bilateral propagation are fewer than those from former.

关 键 词：信任链 证书收集系统 移动主体 繁殖 

分 类 号：TP393.0[自动化与计算机技术—计算机应用技术]