• Journal of KIISE:Computer Systems and Theory
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• v.26 no.11
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• pp.1363-1372
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• 1999

에이전트 기반 이동 컴퓨팅 환경에서 전자 상거래를 구현하기 위해 가장 필요로 하는 것은 안전한 지불 구조를 제공하는 것이다. 본 연구에서는 불확정 전송 기법 1,2 을 사용한 비대화형 엔티티 인증 기법과 Horster 기법 4,5 을 기반으로 메시지 복원 기능을 제공하는 공정 은닉 서명 기법을 제시한다. 또한 이를 직접 Brands가 제시한 오프-라인 전자 지불 시스템 3,6 에 접목한다. 인증 단계가 비대화형으로 수행되므로 이동 엔티티 인증에 효율적이고, 메시지 복원 기능을 갖고 공개 검증 기능을 제공하는 은닉 서명을 적용하기 때문에 카운터 방식을 사용한 스마트 카드 기반 전자 지불 시스템 6 에 효과적으로 적용할 수 있었다. 전자 화폐에 대해서 신뢰 센터에 의한 공정성 검토 기능을 추가로 제공하므로 전자 지불 시스템의 신뢰성을 향상시킬 수 있다.Abstract The primary requirements for realizing the electronic commerce in agent based mobile computing environments are to implement the compatible secure payment framework. In this paper, we propose both the non-interactive entity authentication scheme that is combined with oblivious transfer protocol 1,2 and the message recovery fair blind signature based on Horster scheme 4,5 . And these techniques are directly applied to the Brand's off-line electronic payment system 3,6 . As the authentication processes are done by non-interactive manner, we can also get efficiency for mobile entity authentication. Additionally, as the used signature scheme provides a message recovery function with publicly verifiable properties, it is efficiently applicable to a counter based off-line electronic payment scheme 6 based on the additional device like smart card. Therefore, we can enhance the reliability of proposed electronic payment system based on the publicly verifiable fairness in its electronic cash by a trusted judge.

• Journal of Digital Convergence
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• v.20 no.3
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• pp.117-129
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• 2022

In the perspective of value-based adoption mode, this study empirically examined the factors that affect the intention of users of Fintech payment services to stop using them. A survey of college students who are familiar with digital devices, have no objection to payment and settlement services, and have high service access. A total of 148 questionnaires were analyzed using SPSS and SmartPLS. The study results show that perceived benefits, complexity, and security concerns are significant factors influencing the discontinue intention of Fintech payment services. Among them, the perceived benefit showed the most significant influence. Based on the results of this study, Fintech providers will be able to build a service environment to provide continuous benefits for maintaining long-term relationships with users, improve systems to secure various uses, and reduce users' negative perceptions of security. Recently, the use of services by the elderly has increased, so it is necessary to expand the scope of this study to target various age groups in future research.

• Journal of Korea Multimedia Society
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• v.5 no.3
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• pp.298-306
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• 2002

As the mobile communication related services are becoming popular, the payment issues on charging for the content services are getting more and more attention. Many contents providers are having difficulties for correctly charging services they provide, because they do not have appropriate payment systems yet. There are also the privacy protection issues, security problems that arise during transactions, and the authentication issues for both the user and the business, to be taken care of. In this paper, the billing system in the mobile internet environment will be discussed. Topics related to the key distribution for exchanging data, and the authentication mechanism for communications will be discussed. Based on this, a trustworthy billing system will be proposed.

• Environmental and Resource Economics Review
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• v.13 no.3
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• pp.367-385
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• 2004

This study offers the possibility of water allocation between upstream and downstream regions by side payment. In the case of river water, water use of an upstream region affect a downstream region's water use but not vise versa. In this case, the downstream region wants to secure stable water by suggesting side payment to the upper region. We examine the maximum compensation of the downstream region for acquiring additional water. Also we compare each region's total benefits between the cases with and without cooperation. The result of empirical study show that there was a Pareto improvement when two region cooperate in the water use. Also the amount of side payment depend on the degree of shortage of water and both regions are satisfied with the water allocation result by voluntary negotiation.

• Journal of Korea Society of Digital Industry and Information Management
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• v.8 no.3
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• pp.65-74
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• 2012

A barcode is a representative means of cognition. It is either printed on the package of a product or attached to it as a sticker. It is used for the fast cognition of a product at a store. It is considerably cheap to make a barcode. Also, it is possible to read it fast by using a barcode reader. Because of such convenience provided by the barcode, a new system using the barcode as a means of settling payments like a currency or a credit card has been developed. However, due to its characteristics, it is easy to reduplicate, forge or falsify a barcode easily. Therefore, this study focuses on the case of applying the system using barcodes as a means of settling payments without providing solutions for the potential weaknesses. Also, this study suggests various points to consider regarding the creation of safe barcodes as one of the related measures, while providing various methods using additional means of certification other than the one of using barcodes in addition to the way of applying complexity with barcode numbers. Throughout this study, it will be possible to safely establish and operate the payment-settlement system using barcodes.

• The Journal of Information Technology
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• v.4 no.1
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• pp.55-69
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• 2001

TradeCard is a B2B (business-to-business) e-commerce infrastructure that enables buyers and sellers to conduct and settle international trade transactions securely over the Internet. and objective of TradeCard is to provide a secure, reliable, cost-effective and user-friendly solution for conducting and settling international trade transactions. This paper analyzes the reviews of TradeCard by Electronic Message and the various problems which come to application of TradeCard, with particular attention to existing international frameworks for payment systems based on Documentary Credit.

• Proceedings of the Korea Institutes of Information Security and Cryptology Conference
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• 1996.11a
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• pp.122-132
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• 1996

WWW(World Wide Web)은 미래의 쇼핑수단으로 자리를 잡아가고 있다. 하지만, 현재 사용하고 있는 지불형태는 구매자의 신용카드 정보가 평문으로 네트워크를 통해 전송되는 것과 같은 보안상의 문제점을 가지고 있다. 이러한 문제점들은 개인정보에 대한 침해 딸만 아니라 정제범죄 등의 사회적 문제를 야기할 수 있다. 이러한 문제점을 재결하기 위하여 본 논문에서는 신용카드를 사용하는 새로운 전자지불 프로토콜인 SCCP(Secure Credit Card payment)를 소개한다. SCCP의 적합성을 확인하기 위하여 IBM에서 제시한 기준에 따라 수행한 결과, 본 논문에서 제시하는 방법은 안전한 전자지불 프로토콜로 판단된다.

• Journal of KIBIM
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• v.11 no.1
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• pp.1-10
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• 2021

Blockchain is a secure technology that enables transactions between parties without risking data corruption. Besides cryptocurrencies, blockchain technology is being widely adopted in various forms by diverse industries. One promising application is construction contracts. Given that construction projects are executed under strict contractual requirements, blockchain technology-based contracts can ensure that contractual requirements are executed among parties to the contract. The objective of this study is to apply blockchain technology to smart construction contracts and determine their potential feasibility in construction management. In this study, a prototype smart construction contract is presented and its applicability is explored. We conclude that smart construction contracts can be effective as a contractual tool to enhance payment flows in the construction process.

• Proceedings of the Korean Society of Computer Information Conference
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• 2023.07a
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• pp.617-618
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• 2023

본 논문은 모바일 환경에서의 안전한 결제시스템을 위한 기술 연구에 대해 다룬다. 모바일의 급속한 발전은 보안에 악영향을 끼쳤는데, 기기 내에서 많은 개인정보가 처리되기 때문에 해커들의 놀이터가 된 만큼 보안 이슈가 증가 되었다. 이를 해결하기 위해서는 기존의 결제 시스템과 다른 방식의 보안기술이 필요하다. 그리하여 모바일 보안기술과 결제시스템 기술을 연계하여 안전한 결제시스템을 구현하는 방안에 대해 연구하였다. 안전한 결제 시스템을 구현하기 위해 필요한 기술 요소들을 제안하고 이를 바탕으로 안전한 결제시스템을 구현하기 위한 시스템 아키텍쳐를 제안하고, 구현된 시스템을 통해 안전성을 검증하고자 한다. 본 논문에서는 모바일 환경에서 안전한 결제시스템을 위해 모바일 보안기술과 결제시스템 기술을 연계하여 안전성을 확보할 수 있는 방법에 대해 제안하고, 이를 통해 모바일 환경에서 안전하게 결제를 이루어낼 수 있는 기술적인 기반을 마련할 수 있을 것으로 기대해본다.

• Journal of Digital Convergence
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• v.13 no.9
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• pp.89-98
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• 2015

To celebrate the convergence era, Park Geun-Hye government has adhered to the principle sets out to secure revenue no tax increase due to the underground economy legalization, etc. Recently due to the tax deduction policies such as cash receipts and credit card is like getting better transparency on income. However, focusing on the self-employed Evaded income scale is increasing steadily. For the underground economy legalization, it has the plan to increase the transparency of the capital market due to the strengthening of the cash receipt system and the mobile payment market. The purpose of this study is that it hopes the domestic mobile payment market is expanding for the underground economy legalization. To this end, domestic financial companies are hoping to develop a variety of additional services. And the mobile payments market is hoping to gain the trust our customers due to safety and security, etc. As a result the underground economy is expected to disappear naturally.