• 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.

• Proceedings of the KIEE Conference
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• 2005.05a
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• pp.269-271
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• 2005

EMV was formed in February 1999 by Europay International, MasterCard International and Visa International to manage, maintain and enhance the EMV Integrated Circuit Card Specifications for Payment Systems as technology advances and the implementation of chip card programs become more prevalent. The formation of EMV ensures that single terminal and card approval processes are developed at a level that will allow cross payment system interoperability through compliance with the EMV specifications. A credit card environment of the domestic market adopted the standard Local-EMV to have the compatibility with EMV international standard and the EMV migration have been carried out b,# the step-by-step process. It may be possible to adopt various kinds of cryptographic algorithms, however, RSA public key algorithm is currently used. In this paper, as a public key algorithm for the authentication process, Elliptic Curve Cryptographic algorithm is applied to the EMV process. Implementation results is shown. and the possible changes necessary to accommodate Elliptic Curve Cryrtography is proposed.

• The KIPS Transactions:PartA
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• v.9A no.4
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• pp.429-440
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• 2002

Smartcard is a kind of computing device with it's own processor and memory Thus, the international money market is going to accomodate the use of smartcards instead of traditional magnetic cards for the future money market. EMV is a standard protocol for smartcards, proposed by Europay, Mastercard, and Visa, which are three famous international settlement organizations. This paper presents the implementation of EMV specifications for the smartcard terminals for supporting various application programs. This paper shows that the implemented EMV terminal passes the international approval tests.

• Review of KIISC
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• v.16 no.5
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• pp.84-93
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• 2006

신용카드의 보안을 해결하는 방안으로 IC카드의 도입이 활발히 진행되고 있으며, 국제적으로는 EMVCo가 IC 신용/직불 카드 규격을 공동으로 제정하여 이를 기반으로 한 승인작업이 세계적으로 정착이 되고 있는데, 특히 IC카드에서는 EMV 승인을 받은 카드의 사용을 권장하고 있다 본 고에서는 금융 IC카드 관련하여 기본적인 특징과 표준 현황을 살펴보며, EMV 규격의 보안 부분과 EMV 카드 인증에 대해서 기술한다.

• Proceedings of the KIEE Conference
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• 2001.11c
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• pp.46-49
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• 2001

EMV(electromagnetic valve) 시스템은 자동차에서 기계식 캠을 사용하지 않고 전자기력을 이용하여 흡 배기 밸브를 작동시키고 타이밍을 조절하기 위한 것이다. 본 논문에서는 EMV 시스템을 위한 전자기와 기계적 모델을 사용하여 그에 대한 동역학 모델을 유도하였다. EMV 시스템의 최대 동작주파수가 가솔린엔진의 최대 회전수 6000rpm에 대응한 valve의 주파수가 50Hz 되기 위한 제어기를 설계하였고, 실험을 통하여 문제점들을 파악하고자 한다.

• Proceedings of the KIEE Conference
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• 2001.07d
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• pp.2280-2282
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• 2001

EMV(electromagnetic valve) 시스템은 자동차에서 기계식 캠을 사용하지 않고 전자기력을 이용하여 흡·배기 밸브를 작동시키고 타이밍을 조절하기 위한 것이다. 본 논문에서는 EMV 시스템을 위한 전자기와 기계적 모델을 사용하여 그에 대한 동역학 모델을 유도하였다. EMV 시스템의 최대 동작주파수가 가솔린 엔진의 최대 회전수 6000rpm에 대응한 valve의 주파수가 50Hz 되기 위한 제어기를 설계하였고, 실험을 통하여 문제점들을 파악하고자 한다.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.12 no.3
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• pp.23-37
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• 2002

As the world-wide use of the Internet increases rapidly due to development of computer network the Electronic Commerce for business by treating it is growing as compared to the traditional one for the information exchange in the academic and research areas. The Electronic Payment System used for EC includes the Payment Broker System and the Electronic Purse System. And usually Electronic Purse System operates with IC cards. Saving the money in IC card has a high portability and security. Therefore, the Electronic purse System based on IC card is recently issued in the EC. In this paper, we design and implement of a IC card security system for Common Electronic Purse Specifications in Internet. CEPS is a Electronic Purse System proposed VISA, and conform EMV(Europay Mastercard VISA) security structure. With our system, users easily use Electronic Purse System with only Web browser and IC card. Original EMV paid no regard to using in the Internet. But our system, conforming to CEPS and EMV, is easily used in the Internet.

• Transactions of the Korean Society of Automotive Engineers
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• v.10 no.3
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• pp.85-92
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• 2002

This paper presents the effects of design and operating parameters to meet the static and dynamic performances of the electro-mechanical valve(EMV) actuator which can provide more flexible controllability of valve events compared to conventional variable valve actuation devices. The model of the EMV system was also set up and applied to identify the dynamic behavior of the system. And the effects of external disturbances were also investigated such as cylinder pressure, armature neutral position and current supplying time effects and so on. Experiments were carried out to verify the model using the prototype actuator on test bench, it was found that there is a relatively good agreement between experimental data and modeling results. Also, the actuators meet the general engine speed range (over 6000rpm) and the variable valve event control for various VVT effects.

• Journal of Advanced Navigation Technology
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• v.11 no.3
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• pp.337-342
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• 2007

This paper proposes Electronic Credit Card(EMV) processing procedures for a credit payment method which can be applied to Korean ETCS(Electrical Toll Collection System). In Korea, Korea Highway Corporation services contactless ETCS's called by Hi-Pass and Touch-Pass system at present. These systems operate on a pre-paid payment method similar to electronic money. On the other side, a credit payment method based on credit card has an advantage which does not require pre-paid. The introduction of credit payment method to ETCS is in preparation. In this paper, we propose EMV processing methods based on a credit payment method which can be applied on ETCS.

• International Journal of Automotive Technology
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• v.8 no.4
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• pp.429-436
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• 2007

In this study, we improved control performance of an EMV (electromechanical valve) system using a PM/EM (permanent magnet/electromagnet) hybrid EMA (electromagnetic actuator) and showed the feasibilities of both soft landing and fast transition of the EMV system using a simple PID control. The conventional EMV systems using only EM show significant nonlinear characteristics. Therefore, it is very difficult to control the valve position and several complex control schemes are used. This paper focused on the control performance improvement using a PM/EM hybrid actuator. In particular, a PM is used as a key design parameter such as a bias current of a magnetic bearing in order to improve the linear characteristic of the actuator, although most PM/EM hybrid actuators use a PM as a power saver during valve-open and -closed states. First, a FE (finite element) analysis was performed to confirm its linear static force characteristics. Then, both a test rig and a valve control system were built in order to prove experimentally the control performance improvement of the actuator. Finally, feasibilities of both soft landing and fast transition of the system were shown experimentally through gain-scheduled PID (proportional derivative integral) control.