共查询到18条相似文献,搜索用时 140 毫秒
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电子钱包包括两部分:一个由用户控制的电脑和一个由特定组织或机构发给的抗干扰装置。电子钱包的匿名性签名,是指每个电子钱包都有一个经过银行签名的公钥,因此可以进行有效的签名,并且对于每个合法用户,并不能从它的电子钱包的公钥推断出此电子钱包的身份(ID)。这个技术对建立有效的电子支付制度是非常有意义的。但在以往的电子钱包的应用方案中存在这样一个问题:对于违法用户的电子钱包的合法签名,也不能从它的签名中得到它的身份信息,即不满足公正性。利用Camenisch-stadler群签名制度,建立了这样一个电子钱包的签名制度:对于合法用户的电子钱包的签名,它的匿名性受到保护,而对于违法用户的电子钱包的签名,则可通过一个公正的第三方来撤销它的匿名性,因此更加具有实用性。 相似文献
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电子钱包包括两部分:一个由用户控制的电脑和一个由特定组织或机构发给的抗干扰装置.电子钱包的匿名性签名,是指每个电子钱包都有一个经过银行签名的公钥,因此可以进行有效的签名,并且对于每个合法用户,并不能从它的电子钱包的公钥推断出此电子钱包的身份(ID).这个技术对建立有效的电子支付制度是非常有意义的.但在以往的电子钱包的应用方案中存在这样一个问题:对于违法用户的电子钱包的合法签名,也不能从它的签名中得到它的身份信息,即不满足公正性.利用Camenisch-stadller群签名制度,建立了这样一个电子钱包的签名制度:对于合法用户的电子钱包的签名,它的匿名性受到保护,而对于违法用户的电子钱包的签名,则可通过一个公正的第三方来撤销它的匿名性,因此更加具有实用性. 相似文献
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离线匿名电子现金系统的设计与实现 总被引:1,自引:0,他引:1
本文利用Java Applet和Java Network Launch Protocol等技术设计和实现了一个基于RSA盲数字签名的离线匿名的电子现金系统。系统采用B/S和C/S相结合的架构,可以方便进行Web在线支付和点对点支付。系统通过数字证书提供对用户和银行的强身份认证,用户在银行网站进行存取款和在商家网站进行支付,通过SSL协议来保证通信数据的安全,同时用户数据以加密的方式保存在本地磁盘,并可方便地移植到智能卡设备。 相似文献
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一种SET协议中持卡者端的实现策略 总被引:2,自引:0,他引:2
SET(Secure Electronic Transaction,安全电子交易协议)是由Visa和MasterCard公司于1997年5月联合开发的一个为了在Internet上进行在线交易时保证信用卡支付安全的一个开放的规范。目前,绝大多数的SET协议持卡者端的实现是一个称为电子钱包的“胖”客户端,用户使用起来并不是很方便,该文所描述的采用服务器钱包的策略,即将原来的电子钱包分为电子钱包服务器与电子钱包客户端,简化了用户对电子钱包的使用,促进了基于SET协议的电子商务应用解决方案的推广。 相似文献
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本文对可扩展匿名性的网络支付协议进行了分析,并分析了它的基于角色的访问控制(RBAC)。协议用电子现金支付交易。这是一个离线的支付协议,它可以阻止用户不止一次花费同一电子现金。如果用户担心他们的身份泄露给银行,可以改进匿名性。方案中银行只在需要跟踪时要求用户解密消息,从而进行用户和钱币的跟踪,这样跟踪时用户是知道的,因此简便实用地解决了无可信第三方情况下电子现金匿名性控制问题. 相似文献
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一个基于移动Agent防止双重消费的离线电子支付模型及协议 总被引:1,自引:1,他引:1
1 引言随着基于Internet的电子商务发展,电子支付因其比传统支付系统具有操作简便、运行成本低廉和资金周转迅速等优点而成为未来电子商务发展的趋势和必然。目前,国际上电子支付主要基于两种模式:预付模式(prepaid model)和后付模式(pay-later model)。其中,预付模式主要采用基于智能卡的电子现金(e-cash)支付;而后付模式主要采用基于信用卡的电子支付。匿名电子支付系统可以用掩饰签名方案实现。当顾客要提款时,银行为顾客掩饰地签名一个消息(通常是一个随机数)。银行的签名使得这个消息成为一个合法的具有一致值的币值。顾客能够在给商店的支付中使用这个电子货币。由于掩饰签名方案的属性,银行没有关于电子货币的信息(除了它的币值)。因此,支付是匿名的和不可连结的。 相似文献
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基于群盲签名的思想,提出一个具有多个银行参与发行的、可传递的、公平的、离线电子现金系统(FTOLC).多个银行参与电子现金的发行,并能够保证发币银行的匿名性,必要时可以由中央银行识别出发币银行的身份.同时,用户在正常情况下可以匿名地消费,而在特定条件(如法律强制要求)下,可以通过可信第三方撤消用户的匿名性.首次在信息量不增加的情况下,实现了公平离线电子现金的可传递性. 相似文献
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一种具有可恢复性的离线电子支付方案 总被引:1,自引:0,他引:1
提出一种具有可恢复性的离线电子支付方案 .用户可以借助可信第三方 (简称 TTP)恢复因计算机崩溃或电子钱包丢失等原因而丢失的电子现金 ,本方案还能够有效防止重复花费、窃听、篡改和高手段的犯罪 相似文献
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Wen-Shenq Juang Author Vitae 《Journal of Systems and Software》2010,83(4):638-645
Nowadays, various electronic commerce services can be found and are widely used in the Internet due to the mature of information and network technologies. A practical and flexible electronic payment system is one of the key success factors in electronic commerce. Most of the pre-paid anonymous e-cash schemes do not provide lost money recovery. Also, the communication and computation cost of most existing anonymous payment schemes is still high. In this paper, we propose RO-cash, a practical and flexible recoverable pre-paid offline e-cash scheme using bilinear pairing. In RO-cash, we use bilinear pairings in elliptic curves to reduce the computation and communication cost. By distributing the power of a single bank authority to the bank manager and the auditor, the untraceability can be preserved even if the bank manager is not honest in lost-coin recovery. Since our proposed scheme is an offline scheme, it is suitable for the real world environment in which the network connection between a shop and the bank server may not be available during the payment phase. Also, since our proposed scheme is a general scheme, other e-cash schemes with nice properties, e.g. D-cash, PayWord, AOMPS, ownership-claimable e-cash, scheduled e-cash, etc., can be directly applied to our scheme without changing the underlying system structure. This will make our scheme more flexible for attracting customers to use different value-added services. 相似文献
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一种通用移动电子票务系统GMeT的设计与实现 总被引:1,自引:0,他引:1
吴驰 《计算机与数字工程》2005,33(1):106-109
本文主要讨论了一种通用移动电子票务系统GMeT的设计与实现,该系统采用了基于J2EE组件的N层分布式体系架构以及WPKI技术为基础的移动电子商务安全框架:实现了以瘦客户电子钱包服务器为基础的移动实时支付、储值预支付和延迟支付三种支付手段。 相似文献
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Divyan Munirathnam Konidala Made Harta Dwijaksara Kwangjo Kim Dongman Lee Byoungcheon Lee Daeyoung Kim Soontae Kim 《Personal and Ubiquitous Computing》2012,16(6):643-654
Credit/debit card payment transactions do not protect the privacy of the customer. Once the card is handed over to the merchant for payment processing, customers are “no longer in control” on how their card details and money are handled. This leads to card fraud, identity theft, and customer profiling. Therefore, for those customers who value their privacy and security of their payment transactions, this paper proposes a choice—an alternate mobile payment model called “Pre-Paid Mobile HTTPS-based Payment model”. In our proposed payment model, the customer obtains the merchant’s bank account information and then instructs his/her bank to transfer the money to the merchant’s bank account. We utilize near field communication (NFC) protocol to obtain the merchant’s bank account information into the customer’s NFC-enabled smartphone. We also use partially blind signature scheme to hide the customers’ identity from the bank. As a result, our payment model provides the customer with complete control on his/her payments and privacy protection from both the bank and the merchant. We emulated our proposed mobile payment model using Android SDK 2.1 platform and analyzed its execution time. 相似文献
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《Information Security Journal: A Global Perspective》2013,22(3):41-47
Abstract This paper proposes a fair trading protocol. The fair trading protocol provides an overall solution for a trading process with offline anonymous credit card payments. With the exploding growth of electronic commerce on the Internet, the issue of fairness1,2 is becoming increasingly more important. Fair exchange protocols have already been broadly used for applications such as electronic transactions,3,4 electronic mails,5,6and contract signing.7 Fairness is one of the critical issues in online transactions and related electronic payment systems. Many electronic payment systems have been proposed for providing different levels of security to financial transactions, such as iKP,8SET,9 NetBill,10 and NetCheque.11 In a normal electronic commerce transaction, there is always a payer and a payee to exchange money for goods or services. At least one financial institution, normally a bank, should be present in the payment system. The financial institution plays the role of issuer for the payer and the role of acquirer for the payee. An electronic payment system must enable an honest payer to convince the payee of a legitimate payment and prevent a dishonest payer from using other unsuitable behavior. At the same time, some additional security requirements may be addressed based on the nature of trading processes and trust assumptions of the system. Payer, payee, and the financial institution have different interests and the trust between two parties should be as little as possible. In electronic commerce, the payment happens over an open network, such as the Internet, and the issue of fairness must be carefully addressed. There is no fairness for involved parties in the existing popular payment protocols. One target of this article is to address the fairness issue in the credit card payment process. In the existing credit card protocols, the financial institution that provides the credit card service plays the role of online authority and is actively involved in a payment. To avoid the involvement of financial institutions in normal transactions and to reduce running costs, some credit card-based schemes with offline financial authority have been proposed.12 Another target of this article is to avoid the online financial institution for credit card service in normal transactions. 相似文献