• Journal of the Korea Institute of Information and Communication Engineering
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• v.15 no.7
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• pp.1501-1509
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• 2011

Current identity management 1.0 model, which is service provider-centric and isolated, has several problems such as low usability, high cost structure, difficulty in privacy protection, and lack of trust infrastructure. Though various SSO-based identity management 2.0 models including Passport/Live ID, Liberty Alliance/SAML, CardSpace, and OpenID have been recently developed in order to overcome those problems, they are not widely accepted in real Internet environment so as to replace the existing identity management 1.0 model. This paper firstly analyzes the widely-known identity 2.0 models in a comparative way, and then presents a perspective on the development direction of identity management 3.0 model for future Internet.

• Journal of KIISE:Computing Practices and Letters
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• v.10 no.3
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• pp.259-272
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• 2004

This paper suggests a new security architecture for facilitating secure OSGi service platform environment. The security architecture includes 1) user authentication mechanism, 2) bundle authentication mechanism, 3) key sharing mechanism, and 4) authorization mechanism. The user authentication mechanism supplies SSO(single sign-on) functions which are useful for safe and easy user authentications. The bundle authentication mechanism utilizes both PKI-based and MAC-based digital signatures for efficiently authenticating service bundles. The key sharing mechanism, which is performed during bootstrapping phase of a service gateway, supplies a safe way for sharing secret keys that are required for authentication mechanisms. Finally, the authorization mechanism suggests distributed authorization among service providers and an operator by establishing their own security policies. The main contributions of the parer are twofold. First, we examine several security requirements of current OSGi specification when its security functions can be applied in real OSGi environments. Second, we describe the ways to resolve the problems by means of designing and implementing concrete security mechanisms.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.11 no.5
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• pp.3-16
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• 2001

With the development of Internet, it is widely spreaded to a Intranet based on Internet technology. Intranet is a private, unique network to share the information of organization such as incorporate, research institute and university. With the increase of Intranet using, Intranet environment is developing into Extranet environment which is connected many Intranet. Currently such Intranet and Extranet environments, above all, it is important to solve security problems which can appear through use of information between domains. Thus, in this paper, we propose SSO(Single Sign-on System) model with authorization management and single sign-on operation, and we extend it to enable mutual authentication through inter-working based on PKI(Public Key Infrastructure) in Extranet environments.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.13 no.9
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• pp.4214-4223
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• 2012

The argument related to the use of real and anonymous names on the Internet bulletin board has recently become a main issue. When using real names, it is possible to violate free discussion and privacy. Also, when using anonymous names, it is possible to have the reverse function of the Internet in regard to the use of malicious replies or the distribution of false ideas. Therefore, this paper has made it possible to prevent the spread of the user's personal information and execute the single log-in process by using the XML-token method which is one of the SSO technologies. Also, by issuing virtual IDs and forming the path when establishing tokens, the anonymous bulletin board which provides anonymity with a conditional tracing process has been suggested. After analyzing the performance of visitor numbers at authentication time, the anonymous bulletin board based on the group signature method showed the average response rate of 0.72 seconds, 0.18 seconds, which was suggested scheme. In the authentication time 4-5 times faster response speed, respectively. Also, since the suggested system does not have to provide a single authentication process or make the user provide his or her signature, the level of user's convenience seems to be much higher. Such a result shows that the system suggested on the anonymous bulletin board has a more appropriate level of user's convenience.

• Proceedings of the Korean Information Science Society Conference
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• 2004.10a
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• pp.400-402
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• 2004

EAM(Enterprise Access Management)은 SSO(Single Sign On)와 사용자 역할기반의 세분화된 접근관리를 제공하는 적극적 시스템 인증, 제어관리 솔루션으로 EAM 도입을 위해서는 중요한 자원들의 안전한 보관 관리가 필수적이다. 이를 위해 각 기업이나 그룹에서는 XML을 기반으로 한 여러 보안기술을 도입하고 있지만 현재 XML 정보 보안 기술을 중심으로 한 EAM시스템의 구현은 그 기반이 미미한 실정이며 표준에 따른 시스템의 고려도 미약한 실정이다. 특히 XML 정보보호기술과 기존 보안기술인 공개키 기반구조(Public Hey infrastructure, PKI), 권한관리구조 PMI(Privilege Management infrastructure)등과 같은 인증기술과의 상호연동기술에 관한 연구가 부족한 상태이다 이에 본 논문은 표준 XML 정보 보호기술 중 대표적인 기술인 XACML(extensible Access Control Markup Language)과 PMI를 연동한 안전한 EAM 통합 접근 시스템 구축 방안에 대친 연구하였다.

• Annual Conference of KIPS
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• 2004.05a
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• pp.1253-1256
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• 2004

기존의 기업환경에서의 싱글사인온은 비싼 구현과 높은 관리 비용, 확장성의 제약성 등의 단점이 있었으며, 특히 보안을 떨어뜨릴 수 있는 요인이 될 수 있었으나, 최근 새로운 기술들의 등장과 인프라 및 인증 관리 인식의 발전으로 현재의 싱글사인온은 기업에게 주목 받는 대상이 되었다. 본 논문에서는 지금까지 발표된 싱글사인온의 아키텍쳐 및 통합모델들을 나열하고 기업의 환경에 적절한 모델을 선택하는 지침을 제시한다.

• Annual Conference of KIPS
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• 2010.11a
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• pp.1126-1129
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• 2010

클라우드 컴퓨팅 서비스 환경에서 인증 및 접근 제어와 같은 여러 보안 이슈가 발생하고 있다. 특히, 클라우드 컴퓨팅 환경에서 다양한 자원에 접속을 할 경우, 통합적으로 관리 및 제어가 가능한 인증 및 접근제어 모델이 필요하다. 이를 해결하기 위해서, 본 논문에서는 상황인식 기반의 통합 인증(SSO) 및 접근제어 모델을 제안하고, 이를 설계 및 구현함으로써, 클라우드 컴퓨팅 환경에서 유연하고, 편리한 보안 시스템을 검증하고자 한다.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.20 no.8
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• pp.1466-1477
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• 2016

Public key infrastructure(PKI), principle technology of the certificate, is a security technology providing functions such as identification, non-repudiation, and anti-forgery of electronic documents on the Internet. Our government and financial organizations use PKI authentication using ActiveX to prevent security accident on the Internet service. However, like ActiveX, plug-in technology is vulnerable to security and inconvenience since it is only serviceable to certain browser. Therefore, the research on HTML5 authentication system has been conducted actively. Recently, domestic bank introduced PKI authentication complying with web standard for the first time. However, it still has inconvenience to register a certification on each website because of same origin policy of web storage. This paper proposes the certificate based SSO protocol that complying with web standard to provide user authentication using certificate on several sites by going around same origin policy and its security proof.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.20 no.8
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• pp.1478-1486
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• 2016

This paper introduces technical methods to improve the accessibility and usability of a WebRTC video conference (VC) application. Simplified login is essential, by applying such as single sign-on (SSO) to improve the accessibility of VC applications. High usability and manageability are also necessary to attract more users, enhance user experiences, and save service management cost. The proposed VC application leverages SAML-based federated identity management (FIM) to enable higher service accessibility. Users can access the application with their organizational ID and SSO authentication. The FIM eases user ID management and indirectly strengthens privacy information protection. Proposed web application has high usability and manageability because users and/or administrators can easily create, join, monitor, or tear down VC sessions through RESTful web service (REST API). We verify the feasibility of the VC application after illustrating the SAML-based identity federation and the designed REST API.

• Annual Conference of KIPS
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• 2003.05c
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• pp.1961-1964
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• 2003

웹서비스에 대한 높은 관심과 함께 그 실현이 점차 가시화되고 XML로 이루어진 지원 기술들의 전폭적인 지지로 잠재력은 더욱 확대되고 있다. 웹서비스는 기존 웹 기반의 디스플레이에 그쳤던 단순정보 교환을 애플리케이션 차원에서 데이터를 통신할 수 있어 개발 가능성이 무한한 프레임워크로 각광받고 있다. 전자상거래 분야도 예외는 아니어서 웹서비스의 기본 개념을 이용하여 프레임워크를 구성하려는 노력이 진행되고 있다. 이에 따라 인증분야에서도 한계점이 드러나게 되었고 각 시스템마다 존재하는 많은 인증 정보관리 문제가 부각되고 있다. OASIS에서는 웹서비스의 등장과 함께 SAML이라는 표준 인증 방식을 제시하였다. SAML은 XML기반의 표준화된 인증방식을 취하여 안전성과 확장성 뿐만 아니라 인증 간 상호운용성을 제공하는 강력한 기능을 가지고 있다. 본 논문에서는 SAML을 이용한 SSO(Single Sign On)와 접근권한에 대한 적용개념을 소개하고 SAML인증서버를 이용한 Web Services인증 모델을 제시하고자 한다.