信任感知的安全虚拟网络映射算法

针对网络虚拟化技术带来的新的安全威胁，将信任关系和信任度引入到虚拟网络资源分配中，量化分析了网络虚拟化环境中的安全问题，构建了安全虚拟网络映射的数学模型，并在映射过程中考虑节点的局部和全局重要性，采用逼近理想排序法方法对节点进行多属性重要度排序，提出了一种信任感知的安全虚拟网络映射算法。仿真结果表明，该算法在满足虚拟网络请求可信需求的条件下，获得了较好的映射成功率、映射收益和资源利用率。

Trust-aware secure virtual network embedding algorithm

Against the new security threats brought by the network virtualization technology, the concepts of trust relationship and trust degree were introduced into the virtual network resource allocation phase. Security issues in the network virtualization environment were quantitative analyzed. A mathematical model of the secure virtual network embedding problem was modeled in order to reduce the cost. The local and global importance of network nodes were considered in the mapping phase. The network nodes were ranked by TOPSIS method, and a trust-aware virtual network embedding heuristic algorithm was proposed. Simulation results show that the proposed algorithm performs better in acceptance ratio, revenue and resource utilization.