软件定义网络(Software Defined Network,SDN)是一种新的计算机网络架构,能够适应网络规模不断增长的趋势,已得到广泛部署。但SDN独特的架构引入了新的攻击面,攻击者可以针对不同的脆弱点进行攻击。基于网络监控的思想,提出一种SDN网络...软件定义网络(Software Defined Network,SDN)是一种新的计算机网络架构,能够适应网络规模不断增长的趋势,已得到广泛部署。但SDN独特的架构引入了新的攻击面,攻击者可以针对不同的脆弱点进行攻击。基于网络监控的思想,提出一种SDN网络恶意流量检测和防御方法,通过监控链路流量并使用改进的卷积神经网络模型进行恶意流量识别,提高了恶意流量检测准确性和效率,可以检测网络中的恶意流量并进行防御。实验测试结果表明,文章的方法对恶意流量的检测准确率达到95%以上,并能进行有效防御,可以有效提升SDN安全性。展开更多
E-commerce protocols for the electronic purchase of goods are difficult to design and implement due to their complexity and high security demands. Fairness of such protocols in literature highly depends on an addition...E-commerce protocols for the electronic purchase of goods are difficult to design and implement due to their complexity and high security demands. Fairness of such protocols in literature highly depends on an additional TTP(trusted third party). However, it is difficult to find such a TTP in some situations. In addition, fairness for customers has been neither fully considered nor well satisfied in existing electronic purchasing protocols. In this paper, a new protocol FEP (fair electronic purchase) without a special TTP but an online bank is presented based on a concurrent digital signature scheme. The FEP protocol guarantees fair electronic purchase of goods via electronic payment between consumers, merchants and their online banks. The protocol is practical and the analysis based on the game logics shows that it achieves the properties of viability, fairness, and timeliness.展开更多
文摘软件定义网络(Software Defined Network,SDN)是一种新的计算机网络架构,能够适应网络规模不断增长的趋势,已得到广泛部署。但SDN独特的架构引入了新的攻击面,攻击者可以针对不同的脆弱点进行攻击。基于网络监控的思想,提出一种SDN网络恶意流量检测和防御方法,通过监控链路流量并使用改进的卷积神经网络模型进行恶意流量识别,提高了恶意流量检测准确性和效率,可以检测网络中的恶意流量并进行防御。实验测试结果表明,文章的方法对恶意流量的检测准确率达到95%以上,并能进行有效防御,可以有效提升SDN安全性。
基金the National High Technology Research and Development Program of China (2007AA01Z471)
文摘E-commerce protocols for the electronic purchase of goods are difficult to design and implement due to their complexity and high security demands. Fairness of such protocols in literature highly depends on an additional TTP(trusted third party). However, it is difficult to find such a TTP in some situations. In addition, fairness for customers has been neither fully considered nor well satisfied in existing electronic purchasing protocols. In this paper, a new protocol FEP (fair electronic purchase) without a special TTP but an online bank is presented based on a concurrent digital signature scheme. The FEP protocol guarantees fair electronic purchase of goods via electronic payment between consumers, merchants and their online banks. The protocol is practical and the analysis based on the game logics shows that it achieves the properties of viability, fairness, and timeliness.