共查询到17条相似文献,搜索用时 46 毫秒
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近年来可信网络已经成为研究行为预测过程中的热点,而在网络可信度的研究过程中,对用户行为信任的研究也已经成为热点中的热点。另外,由于对行为的信任的方式是建立在过去的交流或社交的行为证据之上的。但是,我们探究可信网络必须要有未来用户的行为信任的等级。所以,对未来的用户行为信任等级的科学性预测基于行为信任预测的可信网络探究的必经之路。本文先阐述了利用贝叶斯网络的方法预测了用户行为信任,为此提供的控制机制不仅仅能够预测出行为信任在单属性条件下的等级,还能有效预测行为信任在多属性条件下的等级。但是,信任并不是永恒的,有信任存在也必将有风险。因此,在决策时不能只单单靠行为信任预测出的结果,否则会造成决策的结果片面,导致失误。因此,本文还将行为信任的预测结果与博弈理论的分析相结合,并对其进行支付矩阵的分析,以便于得出在用户安全行为下的纳什均衡策略均衡的策略。 相似文献
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为了准确判断软件的可信性,针对软件预期行为轨迹中的软件监控点,该文提出了一个基于分级属性的软件监控点可信行为模型。首先,依据软件监控点各属性在可信评价中的作用范围将属性分级,构建各级属性的可信行为模型。其次,针对场景级属性,对同一监控点的训练样本进行区分,提出了一个基于高斯核函数的场景级属性聚类算法;针对单类训练样本,提出了基于单类样本的场景级属性权重分配策略。最后,实验分析表明:基于分级属性的软件监控点可信行为模型能够准确地对监控点的可信性进行评价;对于场景级属性可信模型,采用基于高斯核函数的场景级属性聚类算法具有更低的分类错误率,基于单类样本的场景级属性权重分配策略具有更优的可信性评价效果。 相似文献
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基于TCM标准的可信计算平台,借鉴可信计算组织(TCG)的可信网络连接技术(TNC)规范,提出了一种可信网络接入认证模型,该模型在TNC三层模型上增加了一层系统恢复层,采用先评估再接入认证的方法,即客户端首先对自己进行评估,只有在认为自己可信的情形下才向策略决定点申请接入请求,提高了接入认证效率,同时对于TNC模型中拒绝接入的客户端采取了更柔性的策略,提高了网络的健壮性。 相似文献
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Since the guarantee of trustiness is considered inadequate in traditional software development methods, software developed using these methods lacks effective measures for ensuring its trustiness. Combining agent technique with the support of trusted computing provided by TPM, a trust shell based constitution model of trusted software (TSCMTS) is demonstrated, trust shell ensures the trustiness of software logically. The concept of Trust Engine is proposed, which extends the “chain of trust” of TCG into application, and cooperates with TPM to perform integrity measurement for software entity to ensure the static trustiness; Data Structure called trust view is defined to represent the characteristic of software behavior. For the purpose of improving the accuracy of trustiness constraints, a strategy for determining the weights of characteristic attributes based on information entropy is proposed. Simulation experiments illustrate that the trustiness of software developed by the TSCMTS is improved effectively without performance degradation. 相似文献
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在传感器节点受到能量和带宽严重制约的情况下,如何合理、有效地利用有限的资源来采集有效、可信的数据,成为当前无线传感器网络(Wireless Sensor Network,WSN)研究的热点问题之一。在分析了大量WSN感知数据的基础上,利用时间序列对数据进行建模处理,得出了适合WSN的数据处理模型ARMA(1,1),同时利用基于移动Agent的中间件技术,提出了基于ARMA的无线传感器网络可信数据采集方法。理论和实验结果表明,该方法可保证采集数据的高度可信,同时显著提高了网络的整体性能,有效的减少网络的能耗,延长了网络的生命周期。 相似文献
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针对工业控制网络高度中心化、数据安全和访问控制等问题,优化基于属性的访问控制模型,引入多维信任度量技术作为访问控制判决因素来解决网络内部节点攻击问题,采用联盟链技术优化工业控制网络模式,解决控制系统中心化的问题.进一步提出了基于联盟链的可信工业控制网络访问控制模型TurstAC-ABAC.采用LabVIEW仿真软件和HyperLedger Fabric平台分别实现对工业控制系统和联盟链系统的仿真环境,验证了本文所提出框架的可行性和安全性. 相似文献
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ESB环境中基于代理的可信服务模型 总被引:1,自引:0,他引:1
针对ESB环境下安全隐患的特定需求,提出了基于代理的可信服务模型.模型在ESB的节点上部署一个可信服务模型的代理,采用位运算计算服务的信任度,整合最可信的服务运行流程.在符合ESB规范以及不影响性能的前提下,可以提高系统运行的稳定性和安全性.在SynchroESB平台上的应用,证明该模型的可行性、正确性和健壮性. 相似文献
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一种可信计算平台及信任链传递验证方法 总被引:1,自引:0,他引:1
信任链是可信计算机系统的重要部分,它保证计算机系统从可信源头至系统各组件的可信,但存在信任链建立过程的信任度逐层衰减问题。文中通过可信平台控制模块授权CPU进行链式度量,同时TPCM尾随CPU对信任链进行实时的、随机的和分块的度量,然后在平台信任链中嵌入检查点,统计并检查各块运行时间,从而判断各信任节点是否被篡改。该方法提高了信任链建立和验证的实时性,尤其可以防御针对信任链的时间差攻击。 相似文献
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The trusted network connection is a hot spot in trusted computing field and the trust measurement and access control technology are used to deal with network security threats in trusted network. But the trusted network connection lacks fine-grained states and real-time measurement support for the client and the authentication mechanism is difficult to apply in the trusted network connection, it is easy to cause the loss of identity privacy. In order to solve the above- described problems, this paper presents a trust measurement scheme suitable for clients in the trusted network, the scheme integrates the following attributes such as authentication mechanism, state measurement, and real-time state measurement and so on, and based on the authentication mechanism and the initial state measurement, the scheme uses the real- time state measurement as the core method to complete the trust measurement for the client. This scheme presented in this paper supports both static and dynamic measurements. Overall, the characteristics of this scheme such as fine granularity, dynamic, real-time state measurement make it possible to make more fine-grained security policy and therefore it overcomes inadequacies existing in the current trusted network connection. 相似文献
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The trusted network connection is a hot spot in trusted computing field and the trust measurement and access control technology are used to deal with network security threats in trusted network.But the trusted network connection lacks fine-grained states and real-time measurement support for the client and the authentication mechanism is difficult to apply in the trusted network connection,it is easy to cause the loss of identity privacy.In order to solve the abovedescribed problems,this paper presents a trust measurement scheme suitable for clients in the trusted network,the scheme integrates the following attributes such as authentication mechanism,state measurement,and real-time state measurement and so on,and based on the authentication mechanism and the initial state measurement,the scheme uses the realtime state measurement as the core method to complete the trust measurement for the client.This scheme presented in this paper supports both static and dynamic measurements.Overall,the characteristics of this scheme such as fine granularity,dynamic,real-time state measurement make it possible to make more fine-grained security policy and therefore it overcomes inadequacies existing in the current trusted network connection. 相似文献
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异构无线网络互连后的安全问题是当前网络安全研究的一个热点问题,为了解决异构网络互连后产生的接入安全问题,提出了一种基于信任模型的可信接入框架,该框架建立了异构无线网络间的信任评价体系,对接入异构无线网络用户除了进行身份验证,还必须进行用户信任度的验证,既拒绝了恶意节点接入,又确保了合法节点的安全接入,从而保证异构无线网络互连接入的安全和可信。 相似文献
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This paper presents a scheme to perform QoS management and assure network security by using the trusted-router based on the Trust Management System.In this trusted-router,every IP packet is forwarded and queued by its trust value,which is the quantification of the network's expectation for this packet's and its owner's behavior in the network.We outline the algorithms to calculate the trust value of the trusted-router and the IP packet.We also introduce the trust-based QoS management algorithm and the deplo... 相似文献
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基于动态贝叶斯网络的可信度量模型研究 总被引:1,自引:0,他引:1
针对可信网络中亟需解决的可信度量模型展开研究,以社会学中的人际关系信任模型为基础,研究网络节点间的可信关系,提出了一种与时间因素关联的基于动态贝叶斯网络的可信度量模型。该模型充分考虑身份认证、网络交互行为对可信度量的影响,引入历史交互证据窗口、时效性因子和惩罚因子,同时给出了直接可信度和间接可信度的聚合方法,提高了模型的动态自适应能力以及计算的灵敏度和准确度,有效地抑制了异常实体的威胁。仿真实验结果表明,与传统的贝叶斯网络模型相比,该模型能够灵敏有效地进行可信度计算,同时具有良好的动态自适应性。 相似文献