• Journal of the Korea Institute of Information Security & Cryptology
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• v.17 no.4
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• pp.11-19
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• 2007

A ubiquitous network environment is a system where the user can avail of the network's services anytime, anywhere. To establish such an environment, studies continue being conducted on wireless communication technology and mobile terminals. The company that provides such services should have an established system for authentication, authorization and charging for users. This service is referred to as Authentication, Authorization, Accounting(AAA), and its aspects have been consistently studied. On the other hand, existing studies have been promoted with regard to the authentication and efficiency of the mobile terminal. One of the method is that the mobile terminal contacts to the home authentication server through the external authentication server every time it is required and; another one is to use a medium server to provide authentication in the middle between them. Thus, this study aims to determine the best method to use ticketing, where tickets are provided through a mobile terminal, complete with authentication and authorization features. Also, as it uses ticket, it can efficiently provide mobile verification processing.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.16 no.1
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• pp.1-5
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• 2016

The all-in-one service, for example, mobile wallet enables users to have credit card, membership card, and coupon in one place. It has been one of important o2o services with offline payment. In order to take advantage of mobile commerce, it is necessary to authenticate clients automatically without entering their passwords. This paper proposes an automatic client authentication method in all-in-one service. At registration, clients receives and stores an authentication ticket from a company, which contains an user's identifier and password encrypted by company's symmetric key. Client can be authenticated by transferring authentication tickets to companies at service requests.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.17 no.6
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• pp.57-64
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• 2007

As a ubiquitous environment approaches and the use of the wireless Internet using the mobile terminals is on the increase. Therefore, the users have to undergo the inconvenience of repeatedly input the same information for the user registration and the ID certification. The information the users have to put in to register in on-line services range from the basic personal information to the more other private information such as financial information. Accordingly the user can be in control of users personal information and safely manage the information by conveniently selecting from the Digital ID Wallet the Ticket that holds various information including the basic, financial or payment certification-related information. Consequently, we propose a digital identity management mechanism to control one's personal information in a mobile environment.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.23 no.2
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• pp.169-179
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• 2013

Recently, with rapid advances of mobile devices such as smart phone and wireless networking, a number of services using mobile device based wireless network have been explosively increasing. From the viewpoint of security, because wireless network is more vulnerable than wired network, strong security is required in wireless network. On the contrary, the security for mobile devices has to be efficient due to the restrictions of battery powered mobile device such as low computation, low memory space and high communication cost. Therefore, in this paper, we propose an efficient authentication scheme with mobile devices in wireless network environment. The proposed scheme satisfies security requirements for the service using mobile device and it is suitable in wireless network environment.

• Proceedings of the Korea Information Processing Society Conference
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• 2007.05a
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• pp.1064-1065
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• 2007

본 연구는 모바일 디바이스가 홈 인증 서버로부터 인증을 받고 난 후에 외부 네트워크로 이동하더라도 홈 인증 서버로부터 발급받은 티켓을 이용하여 홈 인증 서버로 접근 하지 않고 외부 네트워크에서의 인증을 제공하여 서비스를 받을 수 있게 한다. 본 방식은 ID기반 티켓을 사용함으로써 정당한 사용자만이 서비스를 제공받을 수 있고 교환되는 메시지 및 지연을 줄이며 지속적인 서비스를 제공받을 수 있어 안전성과 효율성을 높일 수 있다

• Proceedings of the KSR Conference
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• 2009.05a
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• pp.342-348
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• 2009

Many rail operators have developed ticketing systems for the use of rail service and the increase of operation revenue by AIM, E-ticket and mobile tickets. Also they have operated rail pass for rail revenue by foreign tourists. Russian railways (RZD) has similar rail systems with CIS countries and sometimes same tickets. A few years ago, RZD introduced and operated E-ticketing system for the increase of passenger's convenience and operation revenue, and CIS countries have adopted and widely used this system. This study will introduce the revenue business by E-ticketing system of RZD, and forecast Russian railroad business in the future.

• Proceedings of the Korean Information Science Society Conference
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• 2001.04a
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• pp.862-864
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• 2001

다양한 도메인에 있어서 이동 호스트의 서비스 접근은 이동성 계약에 의한 홈 도메인과 도메인간 인증에 의하여 이루어지고 있다. 그러나 다양한 서비스 제공자와 서비스들 그리고 수많은 이동 사용자들에게 있어서 홈 도메인에 의존 한 이동성 계약은 비효율적이며 실용적이지 못한다. 본 논문에서는 티켓에 기반 한 새로운 지불 프로토콜을 제안한다. 공개키 암호 시스템에 기반 한 제안된 티켓 기반 지불 프로토콜은 기존의 연고[1,2]와 비교하여 개선된 안전성과 확장성을 제공한다.

• The KIPS Transactions:PartC
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• v.14C no.2
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• pp.129-138
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• 2007

AAA(Aluthentieation, Authorization, Accounting) protocol is an information securitv technology that offer secure and reliable user Authentication, Authorization, Accounting function systematically in various services. protocol and wireless network work as well as win network. Currently IETF(Internet Engineering Task Force) AAA Working Group deal with about AAA protocol and studying with activity, But, recently it exposing much problems side to user's anonymity and privacv violation. Therefore, in this paper, AAAH(Home Authentication Server) authenticaters Mobile device, after that, use ticket that is issued from AAAH even if move to outside network and can be serviced offering authentication in outside network without approaching by AAAH, Also, we study mechanism that can offer user's privacy and anonymousness to when use service. Our mechanism is using Time Synchronization OTP and focusing authentication and authorization. Therefore, our mechanism is secure from third party attack and offer secure and effective authentication scheme. Also only right user can offer services by using ticket. can reduce signal and reduce delay of message exchanged, can offer persistent service and beighten security and efficiency.

• Journal of Korea Society of Industrial Information Systems
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• v.16 no.5
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• pp.63-71
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• 2011

In general the tickets are essential to buy goods and take services, which are used in various fields of modern society, and there have been several types of tickets such as a paper and an RFID chip. However, the conventional system has a problem like a loss of ticket or forge. thus there have many efforts to compensate the problem. In this paper, by improving the conventional system through the connection between a smart-phone with a server system, a smart ticketing system without paper tickets is proposed. The proposed system can support efficient services for managers and users in terms of timesaving and reliability. The proposed system can be applied in various similar fields requiring a ticket system.

• Proceedings of the Korea Information Processing Society Conference
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• 2006.05a
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• pp.987-990
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• 2006

AAA(Authentication, Authorization, Accounting) 프로토콜은 기존의 유선망 뿐만 아니라 비약적으로 발전하고 있는 무선망에서 VoIP, Mobile IP 등과 같은 다양한 서비스 및 프로토콜 상에서 안전하고 신뢰성 있는 사용자 인증, 인가, 과금 기능을 체계적으로 제공하는 정보보호 기술이다. 그러나 현재 무선망은 유선망에 비해 외부로부터의 공격에 매우 취약하고 통신에 있어서 많은 제약사항이 뒤따르고 있다. 현재 IETF AAA 워킹그룹에서도 무선망에서의 안전한 AAA 프로토콜에 관하여 중요하게 다루고 있으며, 모바일 노드의 이동성에 따른 안전한 인증을 제공하는 방안에 대해서 활발히 연구 중이다. 따라서 본 연구에서는 모바일 노드가 홈 인증 서버로부터 인증을 받고 난 후에 외부 네트워크로 이동하더라도 홈 인증 서버로부터 발급받은 티켓을 이용하여 홈 인증 서버로 접근을 하지 않고 외부 네트워크에서의 인증을 제공하여 서비스를 받을 수 있게 한다. 본 방식은 티켓을 사용함으로써 교환되는 메시지 및 지연을 줄이고 지속적인 서비스를 제공받을 수 있어 효율성을 높일 수 있다.