基于Web的校园网统一身份认证系统的实现

本文提出了一个基于．NETPassport认证机制的统一身份认证系统,本系统利用Windows2003系统自带的ActiveDirectory组件建立目录服务数据库和SQLServer数据库,实现用户信息、组织架构和角色的统一管理,利用．NETWebService技术实现用户单点登录,实现用户统一身份认证,为数字化校园建设提供了技术参考。     

基于击键特征匹配的单点登录系统

结合用户击键特征与单点登录系统中身份认证方案,提出了一种基于击键特征匹配的单点登录系统。该系统提取用户登录时的击键特征作为用户的生物特征,并将其作为登录用户身份信息合法性和有效性验证的重要判定依据。根据击键统计数据的正态分布特性和区间估计原理,计算出设定置信度下用户的平均按键持续时间、击键速度的特征值区间。最后利用统计学模型对用户击键特征进行匹配。     

基于票据的单点登录系统设计与实现

针对传统基于票据的Web应用单点登录系统在组合应用访问上的不足以及基于证书的Web应用单点登录系统存在的效率问题,提出一种改进的基于票据的Web应用单点登录系统。该系统实现了不同域名的Web应用单点登录,引入代理票据实现了组合应用访问时的单点登录,采用票据进行身份认证,避免了数字签名以及多重数字签名带来的认证效率问题。     

单点登录技术在Web应用中的研究与实现探究

一对多的框架关系组成是单点登录的明显特征,它是由单一的用户登录系统对多个应用服务进行的统一管理所提供的用户登录认证.这种统一化登录系统实现了Web应用的信息共享,在一个系统下的任何站点的用户,他都不必反复登录转换身份的去进行身份认证,不仅节省了时间,使得操作与开发效率提升,还减少了不必要的消耗,避免了重复开销,降低了操作成本.本文从实现单点登录的常见策略开始进行分析,从而优化单点登录技术在Web应用中的运用价值,确保在Web请求代理策略下简单的单点登录系统的实现,保证Web应用的高效运用,推动单点登录技术的良好发展.     

云环境下跨域单点登录解决方案

在比较现有的3种单点登录模型优缺点的基础上,分析跨域单点登录应有的基本功能,尝试建立一种云环境下的跨域单点登录系统。方案利用Web Service技术封装原有系统和构建身份映射功能,使原有系统在改动尽量小的情况下与新系统的认证实现无缝对接;通过部署身份认证系统群、跨域控制器、票据授权服务器、传输加密和用户信息库等措施实现云环境下跨域跨平台的集中认证。方案实施简单,安全性高,可扩展性好。     

基于SSL VPN单点登录在区域卫生信息平台中的应用

单点登录是近年来在开发大平台信息系统中出现的一门新兴技术,文章结合作者在开发岳阳楼区基于健康档案的区域卫生信息平台的实践,提出了单点登录技术与SSL VPN技术相结合的基于SSL VPN单点登录技术,为整合多种医疗业务应用系统提供了一个统一身份认证、统一用户管理、统一授权管理、统一资源管理和单点登录平台.     

基于Novell AM的单点登录设计与实现

随着信息化建设横向集成的推进,对用户身份信息进行统一认证和为用户提供单点登录访问方式的必要性日益提高,如何实现统一认证和单点登录是信息化建设的重要课题。Novell AM是Novell公司提供的统一身份认证解决方案,它通过反向代理、自动填表等技术实现信息系统的单点登录,为企业建设统一认证提供了切实可行的一种方案。     

基于PKI的铁路门户单点登录系统的实现

针对目前铁路部门业务管理效率低下,现有信息资源得不到充分利用,信息系统缺乏统一的身份安全认证等问题,本文设计了一种适合的单点登录系统和个性化门户。采用PKI、CA、LDAP等技术为用户提供了统一的信息资源认证访问入口,建立了统一的、基于角色的和个性化的信息访问集成平台,用户只需一次登录就可以根据相关的访问权限和策略设置规则去访问不同的应用系统,单点登录系统的设计加强了各业务子系统的交互性、整体性和数据的互通共享,解决了企业的信息孤岛问题,为用户提供了快捷有效的信息服务和专家决策支持。     

基于混沌一次一密认证的单点登录系统的研究

把混沌序列所具备的良好的随机性用于单点登录系统,利用混沌序列迭代产生的随机数序列作为一次一个变换的身份认证信息,这样每个用户的登录身份都具有惟一性,使得他人无法伪造,同时实现了身份指纹的动态变化,增加了普通单点登录系统的安全性。利用cookie技术将认证信息生成ticket,实现同一个域下面各应用子系统的整合。该系统为同一个域下面的各应用子系统提供了一种高效、安全、方便的单点登录方案。     

铁路企业统一身份认证平台的设计与实现

针对铁路企业工作人员使用多个应用系统需要同时记忆多套用户账号信息的现状,文中基于铁路统一用户管理系统的用户数据,设计了一种铁路应用系统用户的统一身份认证系统。该系统采用单点登录、Token、Cookie、Session共享等技术,实现了用户信息与应用系统的分离、统一用户管理、统一认证、一处登录、处处共享等功能,从根本上解决了不同应用系统重复维护用户信息的问题,使用户能够更便捷地访问不同的应用系统,并保证了不同应用系统间用户信息的一致性、安全性和共享性。     

Cost-effective test solutions for smart card and other integrated flash applications

From its emergence in the late 1980s as a lower cost alternative to early EEPROM technologies, flash memory has evolved to higher densities and speedsand rapidly growing acceptance in mobile applications.In the process, flash memory devices have placed increased test requirements on manufacturers. Today, as flash device test grows in importance in China, manufacturers face growing pressure for reduced cost-oftest, increased throughput and greater return on investment for test equipment. At the same time, the move to integrated flash packages for contactless smart card applications adds a significant further challenge to manufacturers seeking rapid, low-cost test.     

An improved parallel thinning algorithm with two subiterations

The parallel thinning algorithm with two subiterations is improved in this paper. By analyzing the notions of connected components and passes, a conclusion is drawn that the number of passes and the number of eight-connected components are equal. Then the expression of the number of eight-connected components is obtained which replaces the old one in the algorithm. And a reserving condition is proposed by experiments, which alleviates the excess deletion where a diagonal line and a beeline intersect. The experimental results demonstrate that the thinned curve is almost located in the middle of the original curve connectivelv with single pixel width and the processing speed is high.     

Theoretical analysis of the relationship between the Brillouin gain coefficient and the strain in the optical-fiber sensors

The relation between the power of the Brillouin signal and the strain is one of the bases of the distributed fiber sensors of temperature and strain. The coefficient of the Bfillouin gain can be changed by the temperature and the strain that will affect the power of the Brillouin scattering. The relation between the change of the Brillouin gain coefficient and the strain is thought to be linear by many researchers. However, it is not always linear based on the theoretical analysis and numerical simulation. Therefore, errors will be caused if the relation between the change of the Brillouin gain coefficient and the strain is regarded as to be linear approximately for measuring the temperature and the strain. For this reason, the influence of the parameters on the Brillouin gain coefficient is proposed through theoretical analysis and numerical simulation.     

Novel fiber-optical interferometer with miniaturized probe for in-hole measurements

Today, micro-system technology and the development of new MEMS （Micro-Electro-Mechanical Systems） are emerging rapidly. In order for this development to become a success in the long run, measurement systems have to ensure product quality. Most often, MEMS have to be tested by means of functionality or destructive tests. One reason for this is that there are no suitable systems or sensing probes available which can be used for the measurement of quasi inaccessible features like small holes or cavities. We present a measurement system that could be used for these kinds of measurements. The system combines a fiber optical, miniaturized sensing probe with low-coherence interferometry, so that absolute distance measurements with nanometer accuracy are possible.     

Teleportation of an arbitrary unknown N-qubit entangled state under the controlling of M controllers

A new quantum protocol to teleport an arbitrary unknown N-qubit entangled state from a sender to a fixed receiver under M controllers(M < N) is proposed. The quantum resources required are M non-maximally entangled Greenberger-Home-Zeilinger (GHZ) state and N-M non-maximally entangled Einstein-Podolsky-Rosen (EPR) pairs. The sender performs N generalized Bell-state measurements on the 2N particles. Controllers take M single-particle measurement along x-axis, and the receiver needs to introduce one auxiliary two-level particle to extract quantum information probabilistically with the fidelity unit if controllers cooperate with it.     

Diode-end-pumped Nd:YVO4/LBO lasers with 4.2W continuous-wave output at 457 nm

A continuous-wave (CW) 457 nm blue laser operating at the power of 4.2 W is demonstrated by using a fiber coupled laser diode module pumped Nd: YVO4 and using LBO as the intra-cavity SHG crystal With the optimization of laser cavity and crystal parameters, the laser operates at a very high efficiency. When the pumping power is about 31 W, the output at 457nm reaches 4.2 W, and the optical to optical conversion efficiency is about 13.5% accordingly. The stability of the out putpower is better than 1.2% for 8 h continuously working.     

Call for Papers

正Wireless Body-area Networks The last decade has witnessed the convergence of three giant worlds:electronics,computer science and telecommunications.The next decade should follow this convergence in most of our activities with the generalization of sensor networks.In particular with the progress in medicine,people live longer and the aging of population will push the development of wireless personal networks     

Call for Papers—Feature Topic,Vol.12,No.7,2015

正Information Centric Networking Information-Centric Networking(ICN) is an emerging direction in Future Internet architecture research,gaining significant tractions among academia and industry.Aiming to replace the conventional host-to-host communication model by a data-centric model,ICN treats data content as the first     

JOURNAL OF ELECTRONICS(CHINA)

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NEXT GENERATION WIRELESS NETWORKS–ESPECIALLY THE USE OF MILLI-MICROWAVE BANDS

The global bandwidth shortage of wireless communications has motivated the exploration of the naillimeter wave （ram-wave） frequency spectrum for the next generation wireless communications. Recent advances in RF CMOS technology and high speed baseband signal processing technologies have enabled tile extensive research and development of turn-wave wireless communications. The multi gigabit per second data rate of ram-wave system will lead to applications in many important scenarios, such as WPAN, WLAN,back-haul for cellular system. And the frequency bands include 28 GHz, 38 GHz, 45GHz, 60GHz, E-BAND and even beyond 100 GHz. The propagation and the imitation of the RF circuits design in these frequency bands make the directional antennas be inevitable for mm-wave communications.