Fair e-payment protocol based on blind signature

Electronic transaction through e-payment protocol will grow tremendous in the coming years. In this article, by conversely using blind signature, the authors propose a fair electronic payment scheme for electronic commerce, which can ensure two participants' right simultaneously in electronic transaction process. This scheme is different from other existing schemes and it does not require strong trust relation between customer and merchant. In the scheme, a semi-trusted third party (S-TTP) is involved to provide a fair commerce environment. The S-TTP takes part in the protocol on-line and no secure information about the business is leaked. Moreover, the participants do not need to register to S-TTP. This scheme does not require intervention of a third party in case of dispute, if one user cheats or simply crashes.     

基于B2C的服装购物网站的研究与开发

分析了对服装网络购物发展的几个有利因素——电子商务的迅猛发展、网民数量的剧增和网购意识的增强、电子支付技术和法律法规的完善以及快递公司的层出不穷,并针对制约其发展的因素,提出了建立服装购物网站的方法和内容。     

专业服装购物网站的研究与开发

对促进服装网络购物发展的有利因素-电子商务的迅猛发展、网民数量的剧增和网购意识的增强、电子支付技术和法律法规的完善和快递公司的层出不穷等进行了阐述,也针对制约其发展的因素进行了分析,并提出了建立服装购物网站的方法。     

我国电子商务及其电子支付方式发展探讨

目前,随着互联网的迅猛发展,网络已成为一种新的商务贸易平台。电子货币作为基于网络银行的支付结算工具也正以前所未有的速度发展,电子商务已成为一种新的国际商业模式,也成为中国企业在新的世纪进入国际市场的真正机遇。     

应用量子盲签名和群签名的电子支付系统

提出了一个基于量子群签名和盲签名电子支付系统的实现方案。基于经典的签名的现有的电子支付系统不能保证无条件安全性。与经典的电子支付系统不同,提出的方案既能满足电子支付系统的需求,又能实现无条件安全。应用量子密钥分发技术,量子一次一密算法和审计机制实现了基于量子签名的电子支付系统。     

Cryptanalysis of a pay-as-you-watch system

In this paper, we exhibit security flaws in the MICROCAST pay-as-you-watch system. From the sole knowledge of public parameters, we show how any intruder is able to forge a coin and so to freely get access to the service.     

New and efficient conditional e-payment systems with transferability

Conditional e-payments (or e-cash) allow the user to anonymously cash a bank-issued e-coin at a future time if and only if a certain agreed-upon public condition is satisfied, which are useful in plenty of applications such as prediction markets, anonymous online betting, and securities trading. In this paper, we propose a new and efficient conditional e-payment system based on Chen et al.’s restrictive partially blind signature scheme. Compared to the existing conditional e-payment schemes  [2], [5], [6], our construction requires neither the inefficient cut-and-choose techniques nor the complicated knowledge proof protocols and thus has lower computation and communication complexity. Another significant contribution of this paper is a conditional e-payment system with transferability which allows the coin to be further transferred anonymously by a chain of payees.     

高效的离线电子现金方案

电子现金本质上是一串容易被复制的比特序列,如何在保护合法用户匿名性的前提下有效地防止其被重复花费是电子现金研究的关键。提出了一种新的基于RSA盲签名的离线电子现金方案,采用双密钥对称加密,将用户账号信息嵌入其中,从而保证合法花费一次用户的匿名性,也能够以极大的概率找出重复使用同一笔电子现金的用户。对分割选择（cutandchoose）机制进行了改进,降低了计算复杂度。最后,对方案的公平性和安全性进行了分析。     

基于B2C的服装购物网站的研究与开发

分析了对服装网络购物发展的几个有利因素——电子商务的迅猛发展、网民数量的剧增和网购意识的增强、电子支付技术和法律法规的完善以及快递公司的层出不穷，并针对制约其发展的因素，提出了建立服装购物网站的方法和内容。     

基于SET的电子商务安全模型设计

在分析电子商务主要安全威胁的基础上,介绍了基于SET的电子商务安全模型和电子支付流程,运用了针对性的安全技术,以消除电子商务活动中的安全隐患。