• Journal of the Korea Institute of Information Security & Cryptology
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• v.23 no.6
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• pp.1007-1015
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• 2013

The automatic payment process of mobile phone micropayment system has not checked user's authentication. That is the structural vulnerability of mobile phone micropayment system. The malicious contents provider can cheat users and payment gateway through abusing the structural vulnerability. The payment gateway applies standard payment module after August, 2012 in order to solve the problem. But the standard payment module also has the vulnerability that makes damage of users. So the purpose of this paper is to suggest efficient improvement of standard payment module for user protection.

• The KIPS Transactions:PartC
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• v.11C no.6 s.95
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• pp.755-764
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• 2004

Recently 'Banking IC Card Standard' and EMV Standard by the domestic standard is selected, and it is situation that is developing infrastructure vigorously to alternate Magnetic Stripe card by IC card. This paper analyzes EMV standard that is selecting public key cipher, and research wishes to study unexhausted EMV PKI relatively than internet PKI, WAP PKI etc. This paper propose utilizable EMV base Payment PKI model in IC card base payment system development, and developed EMV CA system with this. Also, this paper supplemented IC card Authentication mechanism that is defined in EMV standard, and propose 'Efficient smart card Authentication mechanism' to improve performance of this mechanism, and estimate performance.

• THE INTERNATIONAL COMMERCE & LAW REVIEW
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• v.50
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• pp.109-136
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• 2011

Bank Guarantee system is commonly used as useful financial instruments to support various overseas and domestic business activities by providing bank guarantees. Therefore, it will be able to develop as a useful socio-economic useful system. However, some procedural problem can arise from the processes under demands for payment. Therefore, it is very important to review the requirements of the demand for payment and compliance standard for the examination of a presentation under the guarantee system. It is necessary to examine main issues under the revised URDG 758. The URDG introduced the same examination principle of "need not be identical to, but shall not conflict with' as that of UCP 600. The main changes of the URDG 758 like this imply the mitigation of the compliance standard for examination. So, This paper is to provide a comparative study of the regulations and laws for the examination standard and propose their implications and practical notes under bank guarantee system. For this purpose, this study will be examined the practical and legal issues focusing on the relative regulations of the revision URDG 758. It will also be reviewed and compared with the URDG, ISP98, UCP 600 and so on.

• Journal of Arbitration Studies
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• v.21 no.2
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• pp.133-156
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• 2011

This paper is to analyze the legality in which the fraud rule allow the issuer of L/C or a court to disrupt the payment to the beneficiary under the deferred payment credit when the nominated bank for deferred payment undertaking made prepayment or negotiation before the maturity date and fraud is identified to be involved. Since the function of commercial L/C is to provide absolute assurance of payment to a beneficiary, the fraud rule based on fraud exception has been known as the negative factor which lead to the disruption of "principle of independence & abstraction" under the commercial L/C transactions. As a result, the fraud rule is necessary to limit the activities of fraudsters, but its scope must be carefully circumscribed so as not to deny commercial utility to an instrument that exists to serve as an assurance of payment. But the fraud itself has not been firmly established because it is inherently pliable in its concept. There are numerous contents to describe the application of fraud to the L/C transactions as a standard such as egregious fraud, intentional fraud, L/C fraud(omitted here), flexible fraud, and constructive fraud. And so the standard applicable to the commercial transaction as the fraud rule would be high or low depending upon the various standards of fraud.

• Journal of Information Technology Services
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• v.16 no.4
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• pp.33-46
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• 2017

Increasing popularity of smartphone is creating many changes in payment market sector also. The new fin-tech and simple mobile payment service have provided convenience as well as various benefits and value-added services to create new payment culture. However, the infrastructure of offline shops is too poor for users to use the simple mobile payment services in Korea. There are several reasons why the support of simple mobile payment services by offline shops has reached the limit in Korea. They include the reluctance of shop owners due to highly priced devices, the failure of NFC of the leading offline payment infrastructure to support iOS, the services that are biased to the specific manufacturers and smartphones (Samsung Pay and LG Pay), prefer large shops (SSG Pay and L PAY), and focus on online transactions. This study used the Bluetooth technology that is the standard feature built in all smartphone to expand the offline shops that accept the simple mobile payment services ensuring universality and scalability from the convenience of customer's and service provider's aspects. Applying the same payment scene as the existing NFC payment method from the user's aspect and the Bluetooth technology from the service provider's aspect enables support of all smartphones and offering value-added services such as electronic receipt and promotions through the large-capacity bidirectional data transfer. This study is intended to review the simple mobile payment services in Korea and other countries, propose the simple mobile payment service model for Korea by analyzing the Bluetooth technology and preceding studies of payment services using BLE technology, and develop the pilot system using the BLE technology to verify the proposed system with actual shops.

• The Journal of Society for e-Business Studies
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• v.11 no.4
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• pp.107-122
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• 2006

Electronic payment continuously increases in B2B trade, there by encouraging active development of information systems which support e-payment mechanisms. In this situation the information systems are supposed to implement various forms of e-payment mechanisms, and provide standard modeling functionalities for e-payment processes. In this paper we assess business process modeling methods for the purpose of e-payment mechanism modeling, and suggest guidelines for e-payment mechanism modeling. The results can be used as a good guideline to business process modeling of e-payment mechanisms.

• The Journal of Asian Finance, Economics and Business
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• v.7 no.10
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• pp.231-240
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• 2020

E-commerce development led to the explosion of online payment. Consumers have many choices when deciding on the online payment method for each transaction. Using a combination of both qualitative and quantitative methods with the help of SPSS AMOS version 22.0, the article explores the factors that influence consumers' online payment method decision behavior in Vietnam. Research results show that awareness of usefulness, awareness of risk, awareness of trust, awareness ease of use, product uncertainly perception and perceived behavioral control have effects on the behavior of deciding on online payment methods. Awareness of risk has the strongest negative impact on online payment method decision behavior and awareness of usefulness has the strongest positive impact on online payment method decision behavior. Based on these important results, the article proposes a number of implications: (i) continuing to invest and upgrade modern technology to ensure customer information absolutely confidential; (ii) converting all ATM cards on the market to EMV chip standard card technology; (iii) improving service activities, quickly handle things to create confidence for customers; (iv) credit institutions operating in the field of online payment linked to e-commerce sites, supermarkets, convenience stores, restaurants must ask partners to increase transparency for the products.

• Journal of Information Processing Systems
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• v.8 no.3
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• pp.495-520
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• 2012

A secure Electronic Payment System (EPS) is essential for the booming online shopping market. A successful EPS supports the transfer of electronic money and sensitive information with security, accuracy, and integrity between the seller and buyer over the Internet. SET, CyberCash, Paypal, and iKP are the most popular Credit Card-Based EPSs (CCBEPSs). Some CCBEPSs only use SSL to provide a secure communication channel. Hence, they only prevent "Man in the Middle" fraud but do not protect the sensitive cardholder information such as the credit card number from being passed onto the merchant, who may be unscrupulous. Other CCBEPSs use complex mechanisms such as cryptography, certificate authorities, etc. to fulfill the security schemes. However, factors such as ease of use for the cardholder and the implementation costs for each party are frequently overlooked. In this paper, we propose a Web service based new payment system, based on ANSI X9.59-2006 with extra features added on top of this standard. X9.59 is an Account Based Digital Signature (ABDS) and consumer-oriented payment system. It utilizes the existing financial network and financial messages to complete the payment process. However, there are a number of limitations in this standard. This research provides a solution to solve the limitations of X9.59 by adding a merchant authentication feature during the payment cycle without any addenda records to be added in the existing financial messages. We have conducted performance testing on the proposed system via a comparison with SET and X9.59 using simulation to analyze their levels of performance and security.

• The Korean Society of Law and Medicine
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• v.9 no.2
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• pp.139-179
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• 2008

This study was carried out to investigate the present conditions and discuss the issues of the Subrogation payment system in emergency medicine. Hitherto preceding study is focusing on controversial of management or efficient control of Subrogation payment system in emergency medicine. The object of this study is legalistic study of the Subrogation payment system in emergency medicine. The Current legalistic issues of subrogation payment system in emergency medicine are the following aspects; Firstly, there are a claimant conformity to the standard limit. Secondly, the review system is not propriety of the promptitude. Thirdly, there is a lack of propriety claim for compensation of a support responsible person. Fourthly, there are objectivity and fairness of administrative appeal system Fifthly, the point where one starts counting of extinctive prescription. Sixthly, the administrative punishment is an illogical system. Lastly, equity and fairness of the Review Agency, as an insurance company and an review Agency are sameness In conclusion, we ought to improvement an unnecessary obstructions of promptitude in the Subrogation payment system in emergency medicine, and ensure a right of emergency medicine without delay.

• KSII Transactions on Internet and Information Systems (TIIS)
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• v.11 no.2
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• pp.1180-1200
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• 2017

Currently, automated payment services provide intuitive user interfaces by adapting various wireless communication devices with mobile services. For example, companies like Samsung, Google, and Apple have selected the NFC payment method to service payments of existing credit cards. An electronic payment standard has been released for NFC activation within Korea and will strengthen the safety of payment service communications. However, there are various security risks regarding the NFC-based electronic payment method. In particular, the NFC payment service using the recently released lightweight devices cannot provide the cryptographic strength that is supported by many financial transaction services. This is largely due to its computational complexity and large storage resource requirements. The chaotic map introduced in this study can generate a highly complicated code as it is sensitive to the initial conditions. As the lightweight study using the chaotic map has been actively carried out in recent years, associated authentication techniques of the lightweight environment have been released. If applied with a chaotic map, a high level of cryptographic strength can be achieved that can provide more functions than simple XOR operations or HASH functions. Further, this technique can be used by financial transaction services. This study proposes a mutual authentication technique for NFC-PCM to support an NFC payment service environment based on the chaotic map.