• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2009.10a
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• pp.351-354
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• 2009

In the internet communication technology, authentication of the user is main task. So far, very popular researches have been proposed for user authentications based on user_id and password. These existing methods have some merits as well as demerits also. In this paper, we analyzed the existing authentication method problems and implement a secure PingPong-128 based key generator for internet technology. In our new scheme, we are using one time password and security card numbers to generate the secure tokens for the user and internet service provider.

• Proceedings of the Korean Information Science Society Conference
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• 2007.10d
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• pp.132-135
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• 2007

유선망, 무선망, 통신 방송 융합 등이 이루어진 BcN망은 기존 접속망을 통한 보안성 위협이 나타날 수 있으며, 특히 개방형 망구조로 인해 쉴게 액세스가 용이하므로 공격을 받을 가능성이 높다. 따라서 서비스를 이용하는 사용자들의 개인 프라이버시 유출 위험이 존재하므로, 신뢰성 보장 및 접근 정보의 보호를 지원해주어야 한다. 본 논문에서는 유비쿼터스 네트워크에서 안전한 개인정보보호를 위한 프라이버시 보호방안을 제안하고 있다.

• Proceedings of the KIEE Conference
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• 2008.07a
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• pp.1913-1914
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• 2008

최근 유비쿼터스 네트워크에 대한 관심이 높아지고 있다. 하지만 유비쿼터스 네트워크는 무선으로 데이터를 전송함으로서 특성상 쉽게 침입자들로부터 침입을 당할 수 있는 보안 문제가 중요하게 대두되고 있다. 이에 따라 강력한 침입탐지 기술에 대한 요구가 증가되고 있다. 본 논문에서는 갈수록 늘어나는 새로운 변형 공격에 대한 탐지를 위하여 LBG-SVDD을 이용한 침입탐지 기법을 제안한다. LBG-SVDD은 새로운 변형 공격 침입 탐지가 발견되었을 때, 새로운 변형 공격 형태에 대한 빠른 학습 훈련을 통해 공격 침입 탐지를 할 수 있다.

• Proceedings of the Korean Information Science Society Conference
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• 2004.10a
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• pp.316-318
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• 2004

유비쿼터스 네트워크의 보안요구사항을 살펴보면 센서의 위치, 저 전력으로 인한 성능의 제약, 브로트 캐스팅에 의한 통신 등 들 수 있다. 그 중이 논문에서는 저 전력으로 인한 성능의 제약측면을 고려한 상호인증 (Mutual Authentication)프로토콜을 새롭게 제안한다. 상호인증 프로토콜은 RM(Register Manager)와 AM(Authentication Manager)로 구성되며 RM과 AM을 통해 각 센서 노드들의 한정된 전력문제를 해결하였고 가 각 센서노드에서의 메시지의 길이와 오퍼레이션 수를 최소화함으로 전력 낭비를 해결하였다. 또한 제안하는 프로토콜은 센서노드간의 상호인증을 통한 세션키 분배를 통해 안전한 통신이 가능하다.

• Proceedings of the Korean Institute of Communication Sciences Conference
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• 2004.07a
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• pp.254-254
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• 2004

• Proceedings of the Korea Institutes of Information Security and Cryptology Conference
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• 2003.12a
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• pp.406-411
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• 2003

최근, 디지털 기술과 네트워크의 발달로 다양한 무선통신 단말기, 반도체, 디지털 방송, 전자상거래 등 다양한 분야가 융합되어 사람과 디바이스간에 실시간으로 정보를 주고받는 환경 즉, 유비쿼터스 컴퓨팅 환경에 많은 관심이 주목되고 있다. 이러한 유비쿼터스 컴퓨팅 환경에서의 통신은 통신개체간에 실시간 개체인증은 물론 전송되는 정보의무결성, 기밀성 등 보안 서비스가 요구된다. 현재의 개체 인증은 사용자가 기억하는 패스워드 또는, 스마트 카드와 같은 보안 모듈을 사용하여 사용자와 개체간에 인증이 이루어지고 있는 실정이다. 이러한 방식은 사용자가 기억해야 할 패스워드가 증가한다거나, 보안 모듈의 손상 및 분실로 인해 자신의 프라이버시(privacy)가 노출될 수 있는 단점이 있다. 이에 본 논문에서는 사용자 고유의 생체 정보와 기억할 수 있는 패스워드를 비밀정보로 사용하여 양방향 개체 인증 키 분배 프로토콜을 제안한다.

• Korean Security Journal
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• no.9
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• pp.237-260
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• 2005

Development of IT technology as well as arrival of information-oriented society raise the curtain of 'the era of Ubiquitous Computing', implying accessing computers beyond boundary of time and space. In this era, it is expected that IT paradigms and life-styles would be transformed immensely above the experiences of 20th century. However, improvement of technology summons a new risk of cyber terrorism which have not been in the past. Thus, it is urgent to prepare for the threats in the national level. This paper point out five major threats relating to 'the security in the era of Ubiquitous Computing'. : First, spread of threats in connection with BcN establishment, second, vulnerable information-security for wireless communication, third, leakage of private information, fourth, cyber terror and deterioration of security, fifth, security problems of Korea including the drain of military information and solutions in the views of organization, personnel, technology and budget, comparing with other countries.

• Journal of KIISE:Information Networking
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• v.36 no.4
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• pp.275-285
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• 2009

RFID technology using the smart tag technology as a part of the sensor network is currently in the spotlight. But there are still many problems in applying the technology in a ubiquitous environment, induding at the point when anybody can read the tag information and the authentication between the tag and the reader, and security problems in very low-cost smart tag implementation. The proposed scheme is designed to enhance security and efficiency related to various services required in RF networks, based on the reliable peripheral devices for users of passive RFID tag. Using passive RFID tag, which has been applied to authentication transactions in existing papers, this study also proposed an appropriate management scheme that is suitable for a dynamic environment and setting a temporary group to provide various services. also proposed scheme is support RFID grouping, temporary group of service and security servicce, improved efficiency of communication.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.19 no.5
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• pp.105-118
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• 2009

In modern society, as the rapid development of IT technology combined with the computer-based high-speed communication networks makes it possible to provide a wide spectrum of services and devices, we have been confronting a new cultural transformation era, referred to as the information society. However, the requirements to be considered in security aspect have became more complicated and diversified, and there remains the same security weaknesses as in the existing media or protocol. Particularly, the office network device with roaming is susceptible to the different kinds of attacks such as terminal hacking, virus attacks, and information leakage because the computing capacity is relatively low and the loading of already developed security functions is difficult. Although developed as one solution to this problems, PKI security authentication technology isn't suitable for multi-domain environments providing uonments proffice network service, and so the development of a novel authentication system is needed. Therefore, in this paper researched the roaming and device authentication/auth for multitechnology using an ID-based public key, authorization ticket, and Sub-device ticket with a purpose to contribute to the development of the secured and efficient technology.

• The Journal of the Korea institute of electronic communication sciences
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• v.14 no.6
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• pp.1077-1082
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• 2019

The development of computing technology and networking has developed into a fundamental technology of the Fourth Industrial Revolution, which provides a ubiquitous environment. In the ubiquitous environment, the IoT environment has become an issue so that various devices and the things can be actively accessed and connected. Also, the RFID system using the wireless identification code attaches an RFID tag to the object, such as the production and distribution of products. It is applied to the management very efficiently. EPCglobal is conducting a research on RFID system standardization and various security studies. Since RFID systems use wireless environment technology, there are more security threats than wire problems. In particular, failure to provide confidentiality, indistinguishability, and forward safety could expose them to various threats in the Fourth Industrial Revolution. Therefore, this study analyzes the standard method of EPCgolbal and proposes RFID security method using hash code that can consider the amount of computation.