• KSII Transactions on Internet and Information Systems (TIIS)
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• 제6권11호
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• pp.2956-2979
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• 2012

Along with the development of Information Technology, online transactions through Internet have become more popular for the reasons of convenience and efficiency. In order to provide secure and reliable online transactions, an effective electronic payment protocol is crucial. In this paper, we propose a novel electronic payment protocol for digital product transactions with an offline arbiter to achieve fair exchange, automated dispute resolution, customer anonymity, and customer unlinkability. In our protocol a product token is adopted to eliminate the need of key management for digital product decryption in the offline arbiter. In addition, Elliptic Curve Cryptography (ECC)-based self-certified public key is utilized to further reduce computing overheads. According to our analysis, the efficiency of our protocol can be greatly increased in comparison with previous literatures.

• 무역상무연구
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• 제19권
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• pp.139-166
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• 2003

The purpose of this paper is to examine whether the international electronic payment system through IDENTRUS can be active in the future or not. For this purpose, we have reviewed the various aspects of the typical systems : their types, operational mechanisms and actual limitations in real trade. Then we have proceeded to examine the distinguished features of IDENTRUS in terms of operational procedures and characteristics by comparing to other systems. Specially as the preconditions of activation, the possibilities of cost down, time reduction, risk hedging and operational efficiency have been studied. Thus we are not sure that the IDENTRUS will have a position as a main stream in the future electronic payment system, but this system would contribute positively to the establishment of electronic payment system if some functional additions will follow.

• 무역상무연구
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• 제75권
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• pp.137-158
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• 2017

Traditional banking systems of transactions are being replaced by FfinTech. Block Chain System can be a key point in Fourth Industrial Revolution such as AI, Big Data, IOT and also can be used as a tools of smart contract or smart payment systems in International Trade. If banking regulation is to be liberalized FinTech would be more activated in Korea and various attempts would be available especially smart payment in business. There are so many levels to be achieved from the time of contract to the time of clearance. We cannot expect speed and range of IT advancement and international trade, Block Chain system will challenge the traditional banking process. First, Block Chain Payment system can be used in P2P, B2B transaction and also T/T in small business. Second, Bit Coin transaction can be available within the parties without the Trusted Third Party. Third, By using of Block Chain system Traditional International Trade process can be altered.

• Journal of Information Processing Systems
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• 제9권3호
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• pp.461-476
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• 2013

Recently, smart devices for various services have been developed using converged telecommunications, and the markets for near field communication mobile services is expected to grow rapidly. In particular, the realization of mobile NFC payment services is expected to go commercial, and it is widely attracting attention both on a domestic and global level. However, this realization would increase privacy infringement, as personal information is extensively used in the NFC technology. One example of such privacy infringement would be the case of the Google wallet service. In this paper, we propose an zero-knowledge proof scheme and ring signature based on NTRU for protecting user information in NFC mobile payment systems without directly using private financial information of the user.

• Asia pacific journal of information systems
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• 제23권4호
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• pp.85-102
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• 2013

This study proposes a web presence readiness model based on pre-payment service functions and a post-payment service function both of which embrace the major concerns of customers in the online purchasing context. Based on the concept of customer utility from the product itself and instrumental utility, the research model suggests four antecedents including, Perceived Economic Benefits, Product Search Support Quality, e-Shopping Method Diversity, and Post-Payment Support Quality. We empirically examined a proposed research model using data collected from online rating company websites. Among the four antecedents, post payment support quality is found to be the most influential determinant of customer evaluation on e-commerce websites. Based on the empirical results, the current study proposes an alternate model of web presence readiness. The findings of this study may provide an insight to field practitioners designing commercial websites. The implications and future research directions are further discussed.

• 한국멀티미디어학회논문지
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• 제16권1호
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• pp.87-99
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• 2013

IT융합 응용 기술의 발전으로 스마트 디바이스들의 활용이 증대되고 있고 지불결제 시스템에서도 스마트 IC카드의 사용이 급증하고 있다. 또한 무선 이동통신기술과 멀티미디어 처리 기술의 발전에 따라 언제 어디서나 IC카드 지불결제 시스템의 사용이 요구되고 있다. 이에 IC카드 지불결제 시스템의 보안성(security) 역시 중요한 이슈로 떠오르고 있다. IC카드 지불결제 시스템들과 같은 정보 시스템의 보안성을 평가하기 위한 여러 가지 결함 분석 기법들이 있다. 그러나 IT융합 응용 기술이 확대 발전함에 따라 정보 시스템의 종류와 특성이 다양해지면서 단지 하나의 시스템 보안성 평가 방법으로는 적절한 분석이 이루어 질 수 없다. 따라서 본 논문에서는 IC카드 지불결제 시스템의 보안성을 평가하기 위해서 두 가지 중요 결함 분석 기법인 결함 트리 분석(Fault Tree Analysis; FTA) 기법과 치명도(Criticality)기반의 고장모드별 영향 분석(Fault Modes and Effect Analysis/Criticality; FMEA/C)기법을 통합하여 사용함으로서 IC카드 지불결제 시스템의 결함 분석을 수행하여 보안성을 평가하고 개선하는 방법을 제안한다.

• 경영정보학연구
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• 제8권3호
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• pp.65-80
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• 2006

본 논문은 여러 개의 신용카드를 이용하여 한가지 상품을 구매하는 것을 가능하게 하는 '분할 가능한 신용카드 결제 시스템'을 제안한다. 이 카드 결제 시스템 구조의 가장 큰 장점은 기존의 카드 결제 시스템의 제반구조에서 두가지 방법으로 구조를 변형하였다. 첫째로 판매자에게 그들이 해당 카드 발급 기관으로부터 분할결제가 가능하도록 카드 승인 과정을 제어할 수 있는 V-Card Manager(VCM)가 추가된다. 두 번째로 소비자가 그들의 선호에 따라서 사용자에게 맞추어져 분할 결제가 가능한 카드를 생성할 수 있도록 소비자 자신들에게 V-Card Agent(VA)가 설치된다. 본 연구는 고객의 이익과 선호에 따라서 분할 결제를 가능하게 하는 맞춤형 신용카드 결제방법을 제시한다.

• 한국정보시스템학회지:정보시스템연구
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• 제27권1호
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• pp.133-151
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• 2018

Purpose Global fintech industry is proliferating. Although domestic investment in fintech service is also increasing fast, user acceptance of fintech payment service seems slower than expected. Previous fintech literature mainly focuses on overall characteristics and technical aspects of fintech including security issues and explores factors affecting the service adoption. This study aims to examine crucial factors affecting user's resistance intention to fintech payment service adoption. The research model was formulated based on innovation diffusion theory and status quo bias theory and validated empirically. Design/methodology/approach The proposed research model was empirically validated with 149 responses from college students who have used fintech payment service. The component-based SEM was employed for data analysis. Findings The significant findings are as follow. First, compatibility has significant negative effect and complexity, and perceived risk has a positive effect on user resistance. Second, institutional trust does not show a significant effect on user resistance but has an indirect effect through the mediation of trust in service provider. Finally, trust in service provider shows the significant negative effect on user resistance.

• 한국전자거래학회:학술대회논문집
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• 한국전자거래학회 2004년도 e-Biz World Conference
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• pp.75-82
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• 2004

Recently introduced by the major credit card associations as replacements for the decommissioned SET and 3DSET protocols, the new payment models, 3DSecure and UCAF/SPA, have been designed to provide online merchants with a solution to an existing problem in online credit card transactions - the lack of an effective and efficient means of authenticating cardholders. The expected benefits arising from this added level of security from the merchant′s perspective are increased consumer confidence, significant reduction in the levels of fraud and charge backs and "liability shift". Using data gleaned from preliminary interviews, discussion forums and promotional material, we present a critical analysis of the potential barriers and facilitators that will impact on the widespread traction of these programs in the marketplace in the coming years.

• 정보학연구
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• 제7권2호
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• pp.77-92
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• 2004

전자무역은 종래의 서류거래 대신 EDI나 인터넷 등 컴퓨터 네트워크를 이용하여 전자적 데이터 메시지를 송수신하여 종래의 무역거래방식에 컴퓨터와 정보통신기술을 결합시킨 새로운 형태의 무역거래를 말한다. 따라서, 본고에서는 무역결제 및 무역운송을 중심으로 무역거래의 전자화 현황을 살펴본 향후 전자무역의 활성화 방안을 제안하고자 한다.