数字移动通信系统中认证协议的设计与分析

该文针对数字移动通信系统的背景和需求, 基于公钥密码体制设计了一个端端密钥分发协议,基于对称密码体制设计了一个身份认证协议,并利用Spi演算对身份认证协议进行了分析,证明了其安全性。     

基于Java2的身份认证数字签名和SSL实现技术

本文介绍了如何利用Java2平台提供的资源实现身份认证和数字签名。     

对安全协议的一些新攻击

论文提出了很多对安全协议进行的新攻击，并且讨论将来如何避免设计不正确协议的方法。     

广东联通WLAN无感知认证应用部署探讨

通过分析目前广东联通WLAN的认证现状和WLAN无感知应用在其他运营商的部署现状,结合当前主流WLAN无感知技术,提出了针对广东联通的WLAN认证平台解决方案,对其他运营商WLAN平台的认证建设和部署具有一定的指导意义。     

Species determination of pine nuts in commercial samples causing pine nut syndrome

Consumption of pine nuts from the species of Pinus armandii has been reported to cause dysgeusia, commonly known as pine mouth, or pine nut syndrome (PNS). However, the number of reports on pine nut consumptions of the different species and PNS is limited. This leaves open the possibility that other pine species than P. armandii could be involved in PNS as well. This study investigated 18 samples involved in PNS and received at the Danish Veterinary and Food Administration in 2011 through 2012. Samples were subjected to gas chromatographic analysis of fatty acids. The content of 11 individual fatty acids was used together with the diagnostic index and the sum of Δ5-fatty acids as diagnostic parameters. Diagnostic parameters from samples were then compared to reference material and literature data to determine the species. In a limited number of samples, the diagnostic parameters matched neither our reference materials nor literature data. However, the morphology, the fatty acid analysis, and externally obtained DNA sequencing data suggest a P. armandii subspecies or a variety. With these possible P. armandii subspecies, P. armandii was identified in all analyzed samples. The application of principal component analysis (PCA) to the data set showed a satisfactory separation of the majority of the 13 pine species included in the study.     

Information-theoretic bounds for authentication schemes

Consider the situation whereby each member of a sequence of n distinct messages from a finite source space is provided with an authentication check, generated using one and the same encoding rule selected from a finite space of such rules. Let P(n) be the expected probability that a spoofer, who observes such a sequence of messages and their corresponding authentication checks, but does not know the encoding rule in advance, succeeds in generating the correct authentication check for a different message in the source space. The purpose of this paper is to derive a lower bound for the average P _Nof the probabilities P(0), P(1),...;, P(N) in terms of the entropy of the space of encoding rules, and to derive necessary and sufficient conditions which the encoding scheme must satisfy in order to ensure that this bound cannot be exceeded.     

现代电子商务中的主要安全技术

针对目前电子商务中存在的主要安全要求，讨论了电子商务的主要安全技术。     

防火墙和AAA协议在报业网络中的联合应用

本文介绍了防火墙的相关概念和技术，分析了AAA协议原理，提出了防火墙和AAA协议联合应用的网络模型。本文的研究和实践对大中型企业的网络安全建设具有一定的参考价值和实践意义。     

基于Kerberos变体的ad hoc网络安全认证研究

在Kerberos协议一个变体的基础上提出了一种称为KSAMAN的安全认证模型。该模型提供安全扩展来支持处于敌对环境中的移动adhoc网络更具挑战性的安全需求。KSAMAN将大量的特性从传统的、有线的Kerberos环境移植到移动的adhoc环境，包括结点身份伪造的预防，重放攻击的检测，安全通道的建立，终端的相互认证，以及用多个副本服务器进行临时会话密钥的安全分发。     

改进802.1x认证技术的研究

文章介绍了802．1x协议的基本概念和原理，对802．1x协议在以太网安全认证管理中的实际应用进行了分析，指出了802．1x协议存在的漏洞。为解决权限管理、地址分配等方面存在的问题，提出了新的方法和实用的改进方案。