In network-connected UAV(NCUAV) communication systems, user authentication is replaced by platform identity authentication and integrity check because many NC-UAVs are operated without human intervention. Direct anony...In network-connected UAV(NCUAV) communication systems, user authentication is replaced by platform identity authentication and integrity check because many NC-UAVs are operated without human intervention. Direct anonymous attestation(DAA) is an attractive cryptographic scheme that provides an elegant balance between platform authentication and anonymity. However, because of the low-level computing capability and limited transmission bandwidth in UAV, the existing DAA schemes are not suitable for NC-UAV communication systems. In this paper, we propose an enhanced DAA scheme with mutual authentication(MA-DAA scheme), which meets the security requirements of NC-UAV communication systems. The proposed MA-DAA scheme, which is based on asymmetric pairings, bundles the identities of trusted platform module(TPM) and Host to solve the malicious module changing attacks. Credential randomization, batch proof and verification, and mutual authentication are realized in the MA-DAA scheme. The computational workload in TPM and Host is reduced in order to meet the low computation and resource requirements in TPM and Host.The entire scheme and protocols are presented,and the security and efficiency of the proposed MA-DAA scheme are proved and analyzed.Our experiment results also confirm the high efficiency of the proposed scheme.展开更多
随着我国灌区工程续建配套的深入,灌区工程条件得到进一步改善,利用现代技术手段提升灌区管理水平与效能,已成为灌区节水改造的重要内容之一。基于Android平台的灌区智能巡检系统设计,采用Android Studio 2.0进行编写,Android Studio 2....随着我国灌区工程续建配套的深入,灌区工程条件得到进一步改善,利用现代技术手段提升灌区管理水平与效能,已成为灌区节水改造的重要内容之一。基于Android平台的灌区智能巡检系统设计,采用Android Studio 2.0进行编写,Android Studio 2.0是Android平台上构建高质量、高效应用的最快方法。巡检系统涵盖GIS、巡检任务管理、巡检成果管理等主要功能,有助于实现灌区信息化智能化管理。巡检系统应用到人民胜利渠灌区系统更新改造中,通过测试和运行表明巡检系统的各项功能得到实现,大大提高了运行管理效率。展开更多
安全播出是广播电视的生命线。作为有线电视运营和管理部门,数字电视前端系统的安全性和稳定性对确保数字视频广播(Digital Video Broadcasting,DVB)安全播出至关重要。基于市级下传的4路不同路由的源信号,并依托两处机房条件,构建了主...安全播出是广播电视的生命线。作为有线电视运营和管理部门,数字电视前端系统的安全性和稳定性对确保数字视频广播(Digital Video Broadcasting,DVB)安全播出至关重要。基于市级下传的4路不同路由的源信号,并依托两处机房条件,构建了主备DVB前端系统。鉴于原系统存在的安全隐患,提出嘉善华数DVB前端平台的改造方案。经过6个月的建设和运行近,该系统展现出高度的安全性和可靠性、运行平稳,成功实现了设计目标。展开更多
With the growing intelligence and popularity of mobile phones, and the trend of cellular network＇s convergence to IP based network, more and more mobile applications emerge on the market. For mission critical applica...With the growing intelligence and popularity of mobile phones, and the trend of cellular network＇s convergence to IP based network, more and more mobile applications emerge on the market. For mission critical applications, like the electronic payment which will be discussed in this paper, the lack of trust in the underlying mobile infrastructure and secure interface to legacy systems （for this case, the banking systems） poses obstacles to their widespread presence in mobile services. Recently, the exposure of hacking of iPhone and other smart phones further emphasizes the criticality of establishing a trust platform for mobile applications. This paper analyzes the building blocks of the trusted smart phone, and proposes a framework to provide a trusted platform for mobile electronic payment. Such a proposed system may allow direct interface to the banking systems due to the banking industry recognized strong security, and hence, may enable its widespread use.展开更多
At ITMA, five “Value Modules” for USTER QUALITY EXPERT were launched, after successful testing by customers around the globe. These modules gave spinners an objective and accurate view of the entire spinning process...At ITMA, five “Value Modules” for USTER QUALITY EXPERT were launched, after successful testing by customers around the globe. These modules gave spinners an objective and accurate view of the entire spinning process, leading to higher yields and consistent quality:“Managing a textile mill with quality in mind” in practice.展开更多
基金supported in part by the European Commission Marie Curie IRSES project "AdvIOT"the National Natural Science Foundation of China (NSFC) under grant No.61372103
文摘In network-connected UAV(NCUAV) communication systems, user authentication is replaced by platform identity authentication and integrity check because many NC-UAVs are operated without human intervention. Direct anonymous attestation(DAA) is an attractive cryptographic scheme that provides an elegant balance between platform authentication and anonymity. However, because of the low-level computing capability and limited transmission bandwidth in UAV, the existing DAA schemes are not suitable for NC-UAV communication systems. In this paper, we propose an enhanced DAA scheme with mutual authentication(MA-DAA scheme), which meets the security requirements of NC-UAV communication systems. The proposed MA-DAA scheme, which is based on asymmetric pairings, bundles the identities of trusted platform module(TPM) and Host to solve the malicious module changing attacks. Credential randomization, batch proof and verification, and mutual authentication are realized in the MA-DAA scheme. The computational workload in TPM and Host is reduced in order to meet the low computation and resource requirements in TPM and Host.The entire scheme and protocols are presented,and the security and efficiency of the proposed MA-DAA scheme are proved and analyzed.Our experiment results also confirm the high efficiency of the proposed scheme.
文摘随着我国灌区工程续建配套的深入,灌区工程条件得到进一步改善,利用现代技术手段提升灌区管理水平与效能,已成为灌区节水改造的重要内容之一。基于Android平台的灌区智能巡检系统设计,采用Android Studio 2.0进行编写,Android Studio 2.0是Android平台上构建高质量、高效应用的最快方法。巡检系统涵盖GIS、巡检任务管理、巡检成果管理等主要功能,有助于实现灌区信息化智能化管理。巡检系统应用到人民胜利渠灌区系统更新改造中,通过测试和运行表明巡检系统的各项功能得到实现,大大提高了运行管理效率。
文摘安全播出是广播电视的生命线。作为有线电视运营和管理部门,数字电视前端系统的安全性和稳定性对确保数字视频广播(Digital Video Broadcasting,DVB)安全播出至关重要。基于市级下传的4路不同路由的源信号,并依托两处机房条件,构建了主备DVB前端系统。鉴于原系统存在的安全隐患,提出嘉善华数DVB前端平台的改造方案。经过6个月的建设和运行近,该系统展现出高度的安全性和可靠性、运行平稳,成功实现了设计目标。
基金This work was supported by the National Nature Science Foundation of China under Grant No.60472014.
文摘With the growing intelligence and popularity of mobile phones, and the trend of cellular network＇s convergence to IP based network, more and more mobile applications emerge on the market. For mission critical applications, like the electronic payment which will be discussed in this paper, the lack of trust in the underlying mobile infrastructure and secure interface to legacy systems （for this case, the banking systems） poses obstacles to their widespread presence in mobile services. Recently, the exposure of hacking of iPhone and other smart phones further emphasizes the criticality of establishing a trust platform for mobile applications. This paper analyzes the building blocks of the trusted smart phone, and proposes a framework to provide a trusted platform for mobile electronic payment. Such a proposed system may allow direct interface to the banking systems due to the banking industry recognized strong security, and hence, may enable its widespread use.
文摘At ITMA, five “Value Modules” for USTER QUALITY EXPERT were launched, after successful testing by customers around the globe. These modules gave spinners an objective and accurate view of the entire spinning process, leading to higher yields and consistent quality:“Managing a textile mill with quality in mind” in practice.
