Dissertations / Theses on the topic 'Online Payment Systems'

An online payment system allows a customer to make a payment to an online merchant or a service provider. Payment gateways, a channel between customers and payment processors, use various security tools to secure a customer’s payment information, usually debit or credit card information, during an online payment. However, the security provided by a payment gateway cannot completely protect a customer’s payment information when a merchant also has the ability to obtain the payment information in some form. Furthermore, not all merchants provide a secure payment environment to their customers and, despite having a standard payment policy, adhere to it. Consequently, this exposes a customer’s payment information to risks of being compromised or misused by merchants or stolen by hackers and spammers. In this thesis we propose a new approach to payment systems in which a customer’s payment information cannot be obtained by a merchant. A customer sends his payment information directly to a payment gateway and a payment gateway, upon verifying the transaction, sends a payment to the appropriate merchant. We use the Pedersen commitment scheme along with dual signatures to securely transfer funds to a merchant and protect a customer’s payment information from any Internet vulnerabilities.

This doctoral thesis represents an investigation into financial fraud in online banking and card payment systems in the UK and China, involving network security, online financial transactions, internet fraud, card payment systems and individuals' perception of and behaviours towards electronic environments. In contrast to previous studies, the research questions were tackled by survey questionnaires both in the UK and China, with a particular interest in fraud and attempted fraud. The main findings from the UK respondents were that those with higher IT skill and younger respondents are more likely to be defrauded on the internet. Certain types of online activities are associated with higher risks of fraud, these being internet banking; online shopping and media downloading. Furthermore, four predictors (internet banking, online education services, downloading media and length of debit card usage) provided significant effects in the logistic regression model to explain fraud occurrence in the UK. Based on the data collected in China, younger respondents were more likely to have higher general IT skill and higher educational qualifications. However, online shopping was the only online activity which was significantly correlated to fraud occurrence. Finally, two predictors (frequency of usage of online shopping and number of debit cards) were selected in the logistic regression model to explain fraud occurrence in China.

The purpose of this project is to design, build and implement an instance of a specified online payment system, which is based on micro-payments. The three components for this system are a bookstore, a receipt service and a currency issuer.

<p>The purpose of this thesis work was to make a survey of current on-line payment technologies and find out which are they and how do they work? Compare and analyze them from a security point of view, as well as a usability point of view. What is good? What is bad? What is lacking?</p><p>To achieve this purpose, an overview of the current on-line payment technologies was acquired through academic books and papers, Internet sites, magazines. Basic cryptographic and security related techniques were studied for the security analysis of current on-line payment systems.</p><p>In this work, various current on-line payment systems were classified into two groups [Macro and Micro on-line payment systems]. This classification was based on the mode of on-line payment transactions. To analyze these on-line payment systems, a set of payment system requirements were formed [Security Issues, Usability Issues, Anonymity, Scalability etc].</p><p>Under the category of Macro payment system, Credit Card payment system, Debit Card payment system, Stored Value Card payment system, Electronic Check payment system, Electronic Cash payment system, Electronic account transfer payment system and mobile payment system transactions were examined.</p><p>Under the category of Micro payment system, Hash Chain based Payment System, Hash Collisions and Hash sequences based Payment Systems, Shared Secrete Keys based Payment Systems and Probability based payment systems were examined.</p><p>Based on the requirements of payment system, these on-line payment systems were analyzed and compared. In the analysis phase, the advantages and drawbacks of these payment systems were figured out.</p><p>It was found from the study that the credit card based payment systems are the most widely used means of conducting on-line payments. It is evident that credit card based payment systems satisfy stakeholder requirements the best, as they offer more flexible payment options, having a large user-base, benefit from familiarity and simplicity of use and also allow international payments. The other on-line payment systems lack this flexibility</p><p>It can also be extracted from the study that users want more simplified, convenient and secure on-line payment systems. Thus the futuristic on-line payment systems will have all secure payment options into one system.</p>

Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, February 2007.<br>Includes bibliographical references (p. 26-27).<br>Physical cash can be anonymously transfered. Transferability is a desirable property because it allows for flexible, private commerce where neither the seller nor the buyer must identify themselves to the bank. In some cases, however, anonymity can be abused and lead to problems such as blackmail and money laundering. In 1996, Camenisch, Piveteau, and Stadler introduced the concept of fairness for (non-transferable) ECash, where a trusted authority can revoke the anonymity of certain transactions as needed. To our knowledge, no current ECash system supports both anonymous transfer and fairness. We have designed and implemented such a system. Also, we formally describe a set of desirable properties for ECash systems and prove that our system meets all of these properties under the Strong RSA assumption and the Decisional Diffie-Hellman assumption in the random oracle model. Furthermore, we provide extensions for our system that could allow it to deal with offline payments and micropayments. Our system has been implemented in java. Tests have shown that it performs and scales well, as expected.<br>by Bin D. Vo.<br>M.Eng.

Thesis (S.M.M.O.T.)--Massachusetts Institute of Technology, Sloan School of Management, Management of Technology Program, 2003.<br>Includes bibliographical references (leaves 146-148).<br>This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.<br>Problems are occurring in the digital business economy as companies try to realize a tangible profit. As network infrastructures improve, the value of information becomes less and less since marginal costs for digital goods is practically zero and searching the cost of goods is also extremely low. How, then, can the media industry remain profitable in the digital business economy? One way to retain the value of digital goods is through the use of firm governmental regulations, but this is still insufficient because of the ever-expanding network infrastructure and the growing threat of piracy. This thesis discusses potential strategies to be used in today's digital business economy based on current difficulties. It proposes an integrated business model for an on-line contents distribution business and an electronic payment business which complement each other. It is well-known that content distribution businesses are facing severe threats from piracy. By providing content for free as a complementary service for profitable businesses, it will be shown that media distribution companies can maximize the value of their contents library, which would otherwise be worthless in face of growing piracy. The thesis also discusses the migration process in an integrated business model by utilizing a System Dynamics approach to the analysis. The electronic payments business is regarded as a profit driver that can be complemented by the attractive value proposition of free online contents distribution businesses. For an infrastructure-oriented business like electronic payments, broad acceptance of such a service is critical to reducing customers' perceived risk. By introducing free content downloads, a business strategy is proposed that accelerates customer penetration and rapid migration to a profitable and integrated business of online contents distribution and electronic payment. By combining these two potentially successful two business models, a profitable business integration is proposed in which each business supplements the other in the digital business economy.<br>by Hideaki Tomikawa.<br>S.M.M.O.T.

<p> Utilizing a case study approach, the purpose of this study was to examine the barriers to adopting an e-government system for online registration and online payments for programs and services of a public municipal recreation department. Through personal interviews, web site observation, and policy examination, the researcher used the data collected to identify three main themes. With these themes, barriers to adopting e-government were explained in detail and compared to previous quantitative findings. Through this research, three main themes were formed: (a) fears&mdash;lack of security and abuse by staff and the public, (b) financial barriers, and (c) preparedness. </p>

碩士<br>義守大學<br>資訊管理學系<br>101<br>With the increasing popularity of Internet and smartphone devices , playing online games have become one of the common leisure activities today so that companies could benefit very much from them. Although there are free mall system of online games can be selected, but the monthly payment system of online game has also been favored by the user, and thus some people would rather spend money to choose the monthly payment system. Therefore, this study is to explore the mall system and the payment System of Online Games for user retention. Linear Regression is used to analyze the relationships between payment systems, user satisfaction, and retention. This study methods were adopted literature review and questionnaire tool as a research tool of MMORPG Mall and Monthly Payment Systems scale. The subjects were university students and users of Bahamut online game website. This study used SPSS for Windows 12.0 for statistical data analysis included Descriptive Statistics, Reliability, Validity Analysis, Pearson Correlation Coefficient, and Regression Analysis. The main findings of this study are as follows: First, Payment systems have significant effects on user satisfaction. Second, User satisfaction has a significant effect on user retention

碩士<br>國立雲林科技大學<br>國際企業管理研究所<br>99<br>Because of the pace of technology change, now the Internet is one of the parts with human’s live. The rapid growth in the electronic commerce over the Internet, e-commerce have more choices and increase convenience than traditional ways for shopping. Then the problem is how to pay money to sellers? How to transport products to buyers? It is the important next step of e-commerce for developing. This study try to understand that the different preference payment systems on online shopping between Taiwan and China. The environmental or financial conditions are different, so are the preferred payment systems. The purpose of this study is to examining the role of online consumer satisfaction, technology acceptance model, and perceived risk on customers between Taiwan and China. The results indicate that the two factors to Taiwanese customers for the prefer payment systems is security and trust. Another result is that Taiwanese and Chinese customers have different on security, privacy, trust, financial risk, performance risk, and psychological risk. Taiwanese enterprises should concentrate their efforts on security to alleviate customers’ fear, and provide secure payment systems.

Nowadays, 31% of the population worldwide still classified as Underbanked. These do not have access to mainstream financial services or institutions, and this is a problem that especially haunts the emerging markets. As the mobile phone penetration rate is tremendous, financial companies are investing in the development of mobile banking solutions to solve this issue. M-Pesa is one of those solutions that currently is being developed and deployed in several of these markets as in Tanzania, Mozambique, Democratic Republic of the Congo and others. The appearing of solutions like M-Pesa allowed its users to have an online bank account and perform operations as deposit, transfer or withdraw money. Despite the innovation and these solutions give them the possibility of pay taxes, bills or services, they continue excluded from the online shopping world. This exclusion happens because payment gateways are not prepared to support users that do not use the traditional banking systems. Online Payments platform aims to allow M-Pesa users to shop online. This platform is an online payment gateway that recurring to a third-party payment processor allows M-Pesa users to purchase on online stores. Is part of the prototype a web platform, that is composed by the following portals: i) merchant; ii) developer; iii) checkout; iv) documentation and v) demo and the Android M-Pesa application that was used to add support to new features for the Online Payments platform. This platform is a proof of concept developed during an internship at WIT Software, that is the company responsible for the development process of the M-Pesa mobile applications. Finally, as far as the final phase of the project is concerned, have been obtained proof of concept thought which can see that it is possible to implement it.

碩士<br>醒吾科技大學<br>資訊科技應用系<br>105<br>The current online shopping in the payment method, very diverse. At present, Taiwan common business (the seller) to set up their own shopping site, that is, another erection of a credit card payment page to facilitate the consumer (buyer) to pay credit card. In this way, for consumers, a very convenient payment model, therefore, can increase the incentive to buy; and because of credit card payment, the seller, although must pay a certain amount of fee (2% ~ 3%), but it is a way to pay the bank to pay. The risk of online credit card, there is the risk of leakage of consumer credit card information. Another bad thing, consumers will only trust their business, pay credit card, but also to the trust of the business must provide consumers choose other payment methods. In most of the current online shopping process, consumers in the seller's shopping page to select products, checkout, the page will be led to a request for consumers to enter credit card information paid page. This payment page will be consumer products, quantity, amount, together with the credit card information to the credit card charging units, such as VISA or bank payment industry, to pay. After the credit card payment is successful, the page is re-directed to the seller's page, informing the consumer, paying the success information and follow-up delivery message. The study found that a serious problem with the network card is a credit card payment page, the number or amount of consumer products may be malicious tampering, followed by consumer disputes, may be through legal procedures to protect both sides of the consumer, but will cause the seller a big Troubled. This study will present the paradigm and explanation of this problem, there is a serious risk of the existence of API, because the web page source code is readable plain text, easy to be tampered with people, which is a great risk on the security, Most of the online shopping sites are facing this problem, we will study the construction of a secure web API, review the API code is not properly protected and payment logic of the discussion, and allow consumers to use to ensure that the payment of web products , Quantity and amount of information such as the integrity and non-repudiation

碩士<br>國立清華大學<br>電機工程學系<br>88<br>After the internet first came to fruition, the growth rate of internet users is prodigious. Before 1995, the internet was used only for technical or military research. After 1995, the internet was applied to business. When 1999, there were more than 1500 million users in the world, and by estimate, there will be 2000 million users in 2000. Not only the number of users but also the market is very enormous. It is believed that the price of merchandise transacted via the internet is more than 100 billions, and the scale of E-commerce market is greater than trillion dollars. Many marketanalysts anticipate that the two star industries are internet and communications in early 2000s, and these two are relative to E-commerce. So this thesis will discuss some relative subjects and will begin with E-commerce. In recent years, E-commerce does weigh with many companies in development because of its unfathomable market. Since E-commerce gets involved with money transaction, it is very important to ensure security and privacy. Security and privacy for E-commerce is building on Public Key Infrastructure (PKI) nowadays. Specifically, the information exchanged through the internet is protected from attack by cryptography. Actually, contemporary cryptography has been used for more than 20 years, and its relative theorems are also very complete. The main goal of this thesis is applying cryptographic skills to E-commerce, and then designing a secure and practicable payment system. We can foresee that any merchant who wants to profit from E-commerce has to be equipped with a reliable payment system. Now, there is only one choose for secure payment system. It is Secure Electronic Transaction (SET). SET defines the transaction rules between cardholders, merchants, banks and Certificate Authority (CA). The Public Key Infrastructure for SET is RSA, DES for encryption and DSA for signature. Although SET has been used and famous for payment, its application is only to the internet, but useless for wireless communication. For this reason, this thesis tries to upgrade the Public Key Infrastructure and program implementation of SET specification, and makes it more applicable to wireless communication. Because DES is belong to private key cryptosystem, the encryption key which is the same as decryption key can not be published. Therefore, it is difficult to manage a lot of key. And DES has been used more than 20 years, it cannot insure that the 64-bit key will not be broken. According to the limit of DES, the selection for E-commerce is public key cryptosystem. The most celebrated toolkit today is RSA. However the private key for RSA has to be 512 bits at least, it can be implement only by software. For hardware or chip with limited memory and wireless communication device with finite bandwidth, RSA is imperfect and inefficient. For instance, SET uses RSA as Public Key Infrastructure and DES as session key, it is not advisable to put SET into smart card or mobile phone as security conception without modification. Fortunately the evolution of ECC provides a solution recently. It is currently believed that 160-bit key of ECC can make the same security level as 1024-bit key of RSA. With all of the efficiencies in place, ECC is roughly 10 times faster than RSA. These advantages can well compensate for lack of SET. This thesis designs a payment system based on ECC and implements it for the request of wireless communication or smart card. Except for the discussion about cryptography and payment, the later chapter also makes the market-analysis of Public Key Infrastructure. Usually theses about electrical engineering rarely correspond with commercialization and feasibility. I hope that my proposed system is equally meritorious for theory and application, so I particularly end in market-analysis. Of course, the applications of PKI to E-commerce are well-rounded. I will plan the future work if there is something inadequate.

碩士<br>國立臺中技術學院<br>事業經營研究所<br>94<br>Information security is one of the crucial factors in online shopping. The online third party payment systems, such as the PayPal of the eBay website and the ezPay of the Yahoo website in Taiwan, have become a latest method of online payment. These cash flow services have provided buyers and sellers with new choices and have changed the consumer’s habit of online shopping. Built upon the Technology Acceptance Model (TAM), this research examines the relationship between consumers’ perceived risks and their willingness to use a new payment system. This research examines first the influence of computer self-efficacy on perceived ease of use and perceived usefulness. It further incorporates the Theory of Planned Behavior to investigate the influence of perceived behavioral control on consumers’ intention to use a new payment system. The empirical results show as follows: 1.The computer self-efficacy has positive influence on perceived ease of use and perceived usefulness. 2.The perceived ease of use and perceived usefulness have positive influence on use attitude and use intention. 3.The computer self-efficacy has positive influence on perceived behavioral control, and the perceived behavioral control has positive influence on use intention. 4.The perceived risk has negative influence on use intention. 5.For those who never use PayPal and ezPay, perceived usefulness and perceived behavioral control have no significant influence on use intention.

Depuis ses fondements, le domaine de l’Interaction Homme-Machine (IHM) est marqué par le souci constant de concevoir et de produire des systèmes numériques utiles et utilisables, c’est-à-dire adaptés aux utilisateurs dans leur contexte. Vu le développement exponentiel des recherches dans les IHM, deux états des lieux s’imposent dans les environnements en ligne : le concept de confiance et le comportement de l’usager. Ces deux états ne cessent de proliférer dans la plupart des solutions conçues et sont à la croisée des travaux dans les interfaces de paiements en ligne et dans les systèmes de recommandation. Devant les progrès des solutions conçues, l’objectif de cette recherche réside dans le fait de mieux comprendre les différents enjeux dans ces deux domaines, apporter des améliorations et proposer de nouvelles solutions adéquates aux usagers en matière de perception et de comportement en ligne. Outre l’état de l’art et les problématiques, ce travail est divisé en cinq parties principales, chacune contribue à mieux enrichir l’expérience de l’usager en ligne en matière de paiement et recommandations en ligne : • Analyse des multi-craintes en ligne : nous analysons les différents facteurs des sites de commerce électronique qui influent directement sur le comportement des consommateurs en matière de prise de décision et de craintes en ligne. Nous élaborons une méthodologie pour mesurer avec précision le moment où surviennent la question de la confidentialité, les perceptions en ligne et les craintes de divulgation et de pertes financières. • Intégration de personnalisation, contrôle et paiement conditionnel : nous proposons une nouvelle plateforme de paiement en ligne qui supporte à la fois la personnalisation et les paiements multiples et conditionnels, tout en préservant la vie privée du détenteur de carte. • Exploration de l’interaction des usagers en ligne versus la sensibilisation à la cybersécurité : nous relatons une expérience de magasinage en ligne qui met en relief la perception du risque de cybercriminalité dans les activités en ligne et le comportement des utilisateurs lié à leur préoccupation en matière de confidentialité. • Équilibre entre utilité des données et vie privée : nous proposons un modèle de préservation de vie privée basé sur l’algorithme « k-means » et sur le modèle « k-coRating » afin de soutenir l’utilité des données dans les recommandations en ligne tout en préservant la vie privée des usagers. • Métrique de stabilité des préférences des utilisateurs : nous ciblons une meilleure méthode de recommandation qui respecte le changement des préférences des usagers par l’intermédiaire d’un réseau neural. Ce qui constitue une amélioration à la fois efficace et performante pour les systèmes de recommandation. Cette thèse porte essentiellement sur quatre aspects majeurs liés : 1) aux plateformes des paiements en ligne, 2) au comportement de l’usager dans les transactions de paiement en ligne (prise de décision, multi-craintes, cybersécurité, perception du risque), 3) à la stabilité de ses préférences dans les recommandations en ligne, 4) à l’équilibre entre vie privée et utilité des données en ligne pour les systèmes de recommandation.<br>Technologies in Human-Machine Interaction (HMI) are playing a vital role across the entire production process to design and deliver advanced digital systems. Given the exponential development of research in this field, two concepts are largely addressed to increase performance and efficiency of online environments: trust and user behavior. These two extents continue to proliferate in most designed solutions and are increasingly enriched by continuous investments in online payments and recommender systems. Along with the trend of digitalization, the objective of this research is to gain a better understanding of the various challenges in these two areas, make improvements and propose solutions more convenient to the users in terms of online perception and user behavior. In addition to the state of the art and challenges, this work is divided into five main parts, each one contributes to better enrich the online user experience in both online payments and system recommendations: • Online customer fears: We analyze different components of the website that may affect customer behavior in decision-making and online fears. We focus on customer perceptions regarding privacy violations and financial loss. We examine the influence on trust and payment security perception as well as their joint effect on three fundamentally important customers’ aspects: confidentiality, privacy concerns and financial fear perception. • Personalization, control and conditional payment: we propose a new online payment platform that supports both personalization and conditional multi-payments, while preserving the privacy of the cardholder. • Exploring user behavior and cybersecurity knowledge: we design a new website to conduct an experimental study in online shopping. The results highlight the impact of user’s perception in cybersecurity and privacy concerns on his online behavior when dealing with shopping activities. • Balance between data utility and user privacy: we propose a privacy-preserving method based on the “k-means” algorithm and the “k-coRating” model to support the utility of data in online recommendations while preserving user’s privacy. • User interest constancy metric: we propose a neural network to predict the user’s interests in recommender systems. Our aim is to provide an efficient method that respects the constancy and variations in user preferences. In this thesis, we focus on four major contributions related to: 1) online payment platforms, 2) user behavior in online payments regarding decision making, multi-fears and cyber security 3) user interest constancy in online recommendations, 4) balance between privacy and utility of online data in recommender systems.