浅谈电子商务中的加密技术

加密技术在电子商务中的应用极为广泛,是电子商务安全的重要组成部分,对其深入研究具有重要意义.文章对常用的加密技术,如对称加密、非对称加密和Hash加密的基本原理、主要特点、算法的优化等以及研究现状进行综述,旨在进一步提高电子商务的安全性.     

SQL Server的数据库加密技术的研究与实现

数据库加密就是对数据库的文件或数据进行加密,数据加密后以密文方式存储,即使被窃取、被拷贝,机密数据也不会被敌对方获取。本文介绍了SQL Server数据库常见的安全问题和数据库加密技术,提出了一种对于数据库字段的加密技术。     

数据库加密技术在电子商务中的应用

作为电子商务的基础组成,许多重要的商业信息储存于网络数据库当中,所以在电子商务系统中一大核心问题则是确保网络数据库能够得以安全的运行。在如今的网络数据的安全保障当中,最为有效的方法是为数据库进行加密。笔者在本文中,通过以下三个方面对数据库的相关加密技术进行了深入的探讨,以便找到更有利于数据库加密的有效措施。     

异或加密技术在数据库中的应用

数据库的安全问题也已经越来越受到高度关注。数据安全不仅要抵抗来自网络黑客的安全威胁,还要防止来自网络内部,特别是数据库管理员的安全威胁。数据库加密技术是通过加密数据库中数据,使重要数据或敏感数据以"密文"形式存在,以保护数据不被非法人窃取、阅读的目的。本文介绍了异或加密技术在数据库加密中的应用,对异或加密的原理和算法以及加密策略进行了分析和描述。     

加密技术在航天器仿真平台数据库中的应用

从提高数据的安全性出发,对航天器仿真平台中的数据库加密技术进行研究。详细论述数据库的加密算法及其算法实现的主要流程,并给出了某航天器仿真平台数据库管理系统加密实例;同时还阐述了密钥管理,加密解密对系统功能的影响。该研究结果对保证航天器仿真数据的安全具有一定的实用价值。     

电子商务安全中的数据加密技术

本文论述和分析了加密技术及其在电子商务安全方面的应用现状。在对称加密体制方面,重点讨论了DES算法,给出了其在密钥管理,安全应用方面存在的问题;在非对称加密体制方面,重点研究RSA及其应用中存在的问题、ECC的优点及应注意的问题等。最后对加密技术在电子商务安全中的应用作了总结和展望。     

数据加密技术在电子商务安全中的应用

论述和分析了加密技术及其在电子商务安全方面的应用现状。在对称加密体制方面,重点讨论了DES算法,给出了其在密钥管理,安全应用方面存在的问题;在非对称加密体制方面,重点研究RSA及其应用中存在的问题、ECC的优点及应注意的问题等。最后对加密技术在电子商务安全中的应用作了总结和展望。     

基于SQL Server的图书馆数据库安全技术研究

针对高校图书馆的数据库安全问题,分析了广泛采用的基于SQL Server数据库的主要防护措施,在探讨了SQL语句和数据库加密技术的基础上,给出了一种具有加密／解密功能的数据库加密策略,并给出了其加密／解密模块的具体流程设计。     

电子商务中的数据加密技术

保证数据传输的安全性和交易者身份的真实性是推广应用电子商务的关键问题 ,本文通过对电子商务安全需求的分析 ,基于对称加密体制、公钥加密体制的原理 ,提出一种能有效地应用于电子商务中的多元加密技术。     

现代数据库系统中加密技术的研究

本文重点对现代数据库系统加密体系结构、层次结构以及数据库加密特点进行深入研究,并将数据加密技术与传统加密技术进行了比较分析,最后还对字段加密和记录加密两种数据库加密方法进行探讨。     

煤矿井下安全监控分站的设计及其仿真实现

为了设计一种具有低成本、低功耗、易操作、功能强且可靠性高的煤矿井下安全分站,针对煤矿安全生产实际,文章提出了采用MCS-51系列单片机为核心、具有CAN总线通信接口的煤矿井下安全监控分站的设计方案;首先给出煤矿井下安全监控分站的整体构架设计,然后着重阐述模拟量输入信号处理系统的设计过程,最后说明单片机最小系统及其键盘、显示、报警、通信等各个组成部分的设计;为验证设计方案的可行性与有效性,使用Proteus软件对设计内容进行仿真验证,设计的煤矿井下安全监控分站具有瓦斯、温度等模拟量参数超标报警功能和电机开停、风门开闭等开关量指示功能;仿真结果表明:设计的煤矿井下安全监控分站具有一定的实际应用价值.     

Call for Papers The 6^th International Conference on Grid and Cooperative Computing

Recent years have seen rapid advances in various grid-related technologies, middleware, and applications. The GCC conference has become one of the largest scientific events worldwide in grid and cooperative computing. The 6th international conference on grid and cooperative computing (GCC2007) Sponsored by China Computer Federation (CCF),Institute of Computing Technology, Chinese Academy of Sciences (ICT) and Xinjiang University ,and in Cooperation with IEEE Computer Soceity ,is to be held from August 16 to 18, 2007 in Urumchi, Xinjiang, China.     

View-based model-driven architecture for enhancing maintainability of data access services

In modern service-oriented architectures, database access is done by a special type of services, the so-called data access services (DAS). Though, particularly in data-intensive applications, using and developing DAS are very common today, the link between the DAS and their implementation, e.g. a layer of data access objects (DAOs) encapsulating the database queries, still is not sufficiently elaborated, yet. As a result, as the number of DAS grows, finding the desired DAS for reuse and/or associated documentation can become an impossible task. In this paper we focus on bridging this gap between the DAS and their implementation by presenting a view-based, model-driven data access architecture (VMDA) managing models of the DAS, DAOs and database queries in a queryable manner. Our models support tailored views of different stakeholders and are scalable with all types of DAS implementations. In this paper we show that our view-based and model driven architecture approach can enhance software development productivity and maintainability by improving DAS documentation. Moreover, our VMDA opens a wide range of applications such as evaluating DAS usage for DAS performance optimization. Furthermore, we provide tool support and illustrate the applicability of our VMDA in a large-scale case study. Finally, we quantitatively prove that our approach performs with acceptable response times.     

A pragmatic multi-method investigation of discrepant technological events: Coping,attributions, and ‘accidental’ learning

Discrepant technological events or situations that entail a problem, a misunderstanding or a difficulty with the Information Technology (IT) being employed, are common in the workplace, and can lead to frustration and avoidance behaviors. Little is known, however, about how individuals cope with these events. This paper examines these events by using a multi-method pragmatic approach informed by coping theory. The results of two studies – a critical incident study and an experiment – serve to build and test, respectively, a theoretical model that posits that individuals use a variety of strategies when dealing with these events: they experience negative emotions, make external attributions, and adopt engagement coping strategies directed at solving the event, eventually switching to a disengagement coping strategy when they feel they have no control over the situation. Furthermore, users’ efforts may result in ‘accidental’ learning as they try to overcome the discrepant IT events through engagement coping. The paper ends with a discussion of the results in light of existing literature, future opportunities for research, and implications for practice.     

The Distributed Time-Triggered Simulation Scheme: Core Principles and Supporting Execution Engine

Distributed real-time simulation is a young technology field but its practice is under increasing demands. In recent years the author and his collaborators have been establishing a new approach called the distributed time-triggered simulation (DTS) scheme which is conceptually simple and easy to use but widely applicable. The concept was initiated in the course of developing a new-generation object-oriented real-time programming scheme called the time-triggered message-triggered object (TMO) programming scheme. Some fundamental issues inherent in distributed real-time simulation that were learned during recent experimental studies are discussed along with some approaches for resolving the issues. An execution engine developed to support both the TMOs engaged in control computation and the TMOs engaged in DTS is also discussed along with its possible extensions that will enable significantly larger-scale DTSs.     

Software-Konfigurationsmanagement in großen Softwareprojekten

Zusammenfassung Mit zunehmender Größe der Softwaresysteme verschärfen sich die für die Software-Herstellung typischen Probleme: Beherrschen großer Objektmengen, Erhalten der Systemkonsistenz, Kontrolle der ständigen Änderungseinflüsse und Gewährleisten einer langen Lebensdauer. Die Disziplin Konfigurationsmanagement bildet den methodischen Ansatz, diese Probleme besser zu beherrschen. Software-Konfigurationsmanagement faßt die Herstellung von Softwaresystemen als eine Abfolge von kontrollierten Änderungen an gesicherten Zwischen- und Endergebnissen auf. Dargestellt werden die Objekte und Funktionen des Software-Konfigurationsmanagements sowie die hierfür in großen Software-Projekten benötigten Methoden, Instanzen und Hilfsmittel.     

Information for Authors

正http://www.zju.edu.cn/jzus http://www.springerlink.com Aim The Journals of Zhejiang University-SCIENCE(A/B/C)are edited by the international board of distinguished Chinese and foreign scientists,and are aimed to present the latest developments and achievements in scientific research in China and     

Editorial:Brain-machine interface(BMI) and cyborg intelligence

正Brain-machine interfaces(BMIs)aim at building a direct communication pathway between the brain and an external device,and represent an area of research where significant progress has been made during the past decade.Based on BMIs,mind information can be read out by neural signals to control     

Information for Authors

正http://www.zju.edu.cn/jzus http://www.springerlink.com Aim The Journals of Zhejiang University-SCIENCE(A/B/C)are edited by the international board of distinguished Chinese and foreign scientists,and are aimed to present the latest developments and achievements in scientific research in China and overseas to the world’s scientific circles,especially to stimulate     

SCIENCE CHINA Information Sciences SUBJECT INDEX TO VOLUME 57(2014)

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