IPSec在下—代互联网IPv6中的研究

本文针对目前国内IPSec研究领域中存在的一些问题,深入研究了人工建立IPSec连接的过程和X．509认证机制,用两种不同的方式在Linux2．6平台的IPv6网络中建立了一远程访问IPSecVPN,结合X．509认证,为网络通信提供了高等级的多种安全服务。     

基于X.509的VPN的安全认证模型

目前VPN广泛应用,但没有一个完善的认证体系,针对于此,提出了基于X.509技术的VPN安全认证模型。论述了确定怎样为VPN通道颁发X.509数字证书,怎样进行证书体系管理的问题,实现了CA系统的证书认证PKI体系在VPN中的安全认证模型。可用于使用公钥认证的VPN中。     

基于Strand Space模型的CCITT X.509协议分析

运用前沿的安全协议形式化分析方法--Strand Space模型理论,对CCITT X.509协议进行了分析,指出了该协议在保密性和认证正确性方面的缺陷,得到了BAN逻辑分析没有得到的保密性缺陷和相同的认证正确性缺陷.同时提出了改进的X.509协议,并用Strand Space模型论证了改进协议的保密性和认证正确性.     

WebLogic中证书路径的生成与验证

证书路径处理是实现Internet公钥基础设施中安全认证的重要技术.本文研究了WebLogic中查找和验证X509证书链的证书查找和验证方法,使用WebLogic Server的默认证书路径提供程序,给出生成和验证X509证书链的应用程序代码,以实现对WebLogic资源的保护.     

基于JAAS安全机制的J2EEWeb系统用户身份认证设计

在J2EEWeb系统中应用JAAS技术提供的动态、可插拔认证模型实现用户身份的安全认证．通过X．509数字证书和用户口令进行双重堆叠认证,在Tomcat服务器上配置实现服务器与客户端之间的SSL双向认证,并通过建立HTTPS连接以保护数据的安全传输,进一步提高系统用户认证的安全性．     

网格安全认证模型的建立与研究

根据网格计算的特点,在现有的网格安全认证模型的基础上,提出了一种基于X.509和Kerberos双协议混合认证模型,该模型能有效的克服现有模型的不足。     

一种认证安全性的分析与设计逻辑

针对BAN逻辑的局限性,在BSW逻辑的基础上,提出了一种针对认证安全性的分析与设计逻辑.同时,以Needham-Schroeder公钥协议及X.509三消息协议的分析与再设计为例,证明了该逻辑的正确性和有效性.     

基于TLS协议的多证书跨域认证

针对TLS协议不兼容IBC及Kerberos等证书的问题,通过在TLS协议中增加新的密码组,提出一种支持多证书跨信任域认证的TLS协议改进方法。用IBC公钥代替X.509证书公钥,实现基于IBC的身份认证,并通过在TLS协议中嵌入Kerberos认证流程,使用Kerberos证书实现互认证,进而扩展协议消息以支持新的密码组。该方法不改变TLS协议的结构,技术实现简单,认证效率高,便于部署。     

基于X.509标准的证书交换接口的安全性研究

基于互联网的应用日益普遍,安全性和登录灵活性越来越成为使用者关心的问题.基于X.509标准的证书登录很好的解决了安全性,QQ互联方式很好的满足了登录的灵活性,本文将这两种技术结合到一起,提出一种新的登录认证模型,很好地解决了安全性与灵活性.     

IPSec协议及其安全性分析

介绍和分析了网络层安全协议 ( IPSec) ,并侧重研究了其认证和保密两种安全机制 ,对有关 IPSec协议安全性问题进行了较为详细的分析 ,指出了 IPSec协议的实际应用价值     

Markedness and its Interpretation in Language Use

Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.     

Features of Women's language

Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women＇s language from these perspectives： pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women＇s language, more attention should be paid to language use in social context. What＇s more, the linguistic phenomena in a speaking community can be understood more thoroughly.     

低渗透非均质砂岩油藏启动压力梯度研究

理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。     

On Tragic Consciousness In The Works By Ernest Hemingway

As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.     

Achieving Unusual States of Matter Under High Pressure

正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-     

Exchange-Correlation and Electronic Excitation Energies from Pairing Matrix Fluctuations

We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-     

Density Functional Theory for the Response of Periodic Systems to Electric Fields Based on the Vector Potential Approach

正The electronic and nuclear(structural/vibrational)response of 1D-3D nanoscale systems to electric fields gives rise to a host of optical,mechanical,spectral,etc.properties that are of high theoretical and applied interest.Due to the computational difficulty of treating such large systems it is convenient to model them as infinite and periodic(at least,in first approximation).The fundamental theoretical/computational problem in doing so is that     

On the Thermodynamic Limit for Responses to Static Electromagnetic Fields

For molecular systems,the quantum-mechanical treatment of their responses to static electromagnetic fields usually employs a scalar-potential treatment of the electric field and a vector-potential treatment of the magnetic field.Although the potential for each field separately is associated with the choice of an(unphysical)origin,the precise choice of the origin for the electrostatic field has little consequences for the results.This is different for the     

Call for Papers

<正>"The Journal of Shanghai Normal University:Mathematics"is published by Shanghai Normal University as regular issues of The Journal of Shanghai Normal University each year from 2014 in English.The editors-in-chief of the issues are professors Yuhao Cong and Maoan Han.The Journal of Shanghai Normal University was started in 1958 with     

Journal of Donghua University ( English Edition) Contents of Volume 31

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