Research And Implementation Of Secure Routing Service In SDEN Network

Service Dynamic Extended Network(SDEN)is based on the principle of Extensible Network Service Model(ENSM),extracts basic functional units from network protocols and realizes required network services through on-demand dynamic combination,with better service scalability.As the basic service of SDEN,Extensible Routing Service Model(ERSM)provides flexible and scalable routing services through three elements: addressing mode,routing table,and routing algorithm.The security of routing is realized by the SDEN security service model.At present,the security service model realizes data encryption and identity authentication security services in the process of routing communication through key algorithm,but cannot guarantee the security of routing nodes and communication paths.Therefore,research and implementation of a feasible and effective security routing service model is SDEN’s current one of the key issues.Aiming at the security routing problem of SDEN,this thesis firstly analyzes the existing security routing protocols,summarizes the common security technologies,and establishes the security theoretical foundation for realizing the security routing service.Then based on ERSM,by adding security mechanism elements and optimizing the original three elements,a Secure Routing Service Model(SRSM)consisting of four elements is proposed.As a security guarantee mechanism for routing services,the security mechanism maintains the existing data encryption service capabilities of SDEN security services,further builds a node security assessment mechanism based on knowledge graphs,and designs a secure routing maintenance algorithm to achieve routing node security and communication path security,thereby e xtend routing content security to content and path security.The paper discusses in detail the construction of SDEN node information ontology,the construction of node credibility inference rules,and the specific implementation of the secure route maintenance algorithm.Finally,based on the SDEN basic environment,the corresponding prototype system is designed and implemented,and relevant experiments are designed on this basis to verify the feasibility and effectiveness of the proposed secure routing service model.Experiments show that the SDEN secure routing service model can realize the secure routing service of SDEN network.