【作者】 牛晓荣；

【导师】 张晓凌；

【作者基本信息】 北京工业大学 ， 计算机应用， 2003， 硕士

【摘要】 通过研究和开发网上报考系统及数据加密传输，掌握开发电子商务系统、在线支付系统和安全电子邮件应用的技术。 本文基于“北京教育考试院大型网络信息系统——自考子系统”，详细阐述了网上报名系统及数据加密传输的需求分析及总体设计。系统目标在于建立一个B2C模式的电子商务，使考生能够在Internet上报考并通过在线支付系统付费，同时考试院可以对考生的付费情况进行控制和管理。系统基于Oracle8i数据库，Oracle9ias作为Web Server，运用JSP、JavaBeans等技术开发动态网页；对在线支付系统进行探析，提出了解决方案。 随着Internet的迅速发展和各种通信设施的不断完善，越来越多的敏感信息需要在互联网上传送。FTP和电子邮件是在Internet上传播信息的重要的手段，极有必要采取措施提供对高密级数据的安全保护。 为此，我们深入研究加密算法，对多种算法进行了优劣性比较，用组合密码技术来优化和强化加密算法。并基于PGP SDK函数库研究安全电子邮件的客户端应用程序。它为电子邮件的正文及附件提供了加密、解密、签名、验证等功能，结合PGP的密钥证书管理功能和网状信任模型，为电子邮件用户提供邮件内容的保密性、完整性、发送方和接收方身份认证以及不可否认性等安全服务。更多还原

【Abstract】 Researching and developing register for examination on internet system and data encrypted transfers in order to mastering technique of Electronic Commerce, on-line payment system and the secure email client application ?This paper is based on "Beijing Education Examinations Authority NetworkInformation System--Self-study Examination subsystem" ? The analysis ofdemand and the design of the system are elaborated . The target consists in establish an electronic commerce of B to C mode, to make examinees can register for examination on internet and pay by the on-line payment system, At the same time Beijing Education Examinations Authority can control and manage the paying circumstance of examinees. The system is based on Oracle8i database Server, Oracle9ias as Web Server . Dynamic webpage are designed using JSP and JavaBeans, etc. The on-line payment system is deeply discussed and analyzed, and given the solution,.With the rapid development of Internet and the constant improvement of various communications equipment, more and more sensitive information are transmitted on Internet . FTP and email are the most important methods used for communication on Internet, it is necessary to adopt measures to transmit data in high secret degree safely .For this purpose, after deeply researched Encryption and comparison, we use combination Encryption technique to optimize cryptography. And an email client application with security based on PGP has been developed . It provides the email users security services such as confidentiality, integrity , identification and non-reputation by the combination of providing encryption, decryption, digital signature, verification to the email and key management and web trust.更多还原