• The Transactions of the Korea Information Processing Society
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• v.5 no.1
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• pp.172-180
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• 1998

인터넷의 가장 중요한 서비스 중의 하나인 저낮 메일 시스템으 swjd보 교환의 수단으로 널리 이용되고 있다. 그러나, 대부분의 기존 전자 메일 시스템은 7비트 코드를 지원하기 위하여 설계되었기 때문에 한글 메시지와 같은 8비트 코드를 전송하는데 문제점이 있다. 이러한 문제점을 해결하기 위하여 MIME, ISO-2022-KR과 같은 기법이 발표 되었지만 아직도 한글 메시지의 송수신에는 어려움이 있다. 본 논문에서는 일반 사용자가 보다 편리하게 한글 메시지를 송수신할 수 있는 전자 메일 브라우저 모델을 제시한다. 제시한 모델의 기본 개념은 MIME만을 지원하는 POP3 클라이언트를 확장한 것으로써 8비트 한글 메시지를 ISO-2022-KR이나 Quoted-Printable 혹은 Base64로 인코딩하여 7비트로 전송한다. 제시한 모델의 타당성을 검토하기 위하여 전자 apdf 브라우저를 한글 Win95환경에서 구현하여 실험하였다.

• Proceedings of the KSRS Conference
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• v.2
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• pp.615-618
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• 2006

By introducing Web Services, distributed GIS services from different vendors can be dynamically integrated into a GIS application using the interoperable standard SOAP protocol. However, it is debatable whether SOAP can really meet the performance requirements of GIS. This paper presents an experimental evaluation of the performance of different SOAP variants: standard SOAP, SwA/MIME, and SOAP/MTOM. The objective of this paper is to demonstrate that SOAP performance in communicating large volumes of GIS data could be effectively improved by recent standards. Moreover, SOAP/MTOM is identified to be the fastest and the most efficient messaging protocol.

• Proceedings of the Korea Institutes of Information Security and Cryptology Conference
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• 2001.11a
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• pp.375-378
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• 2001

엔터프라이즈 환경에서 데이터의 교환을 위해 메시지중계시스템을 사용하고 있다. 그러나, 현재 사용하고 있는 메시지중계시스템 자체에는 정보보호서비스가 적용된 예가 많지 않으며 일부 적용된 경우에도 접근제어 서비스를 제공하고 있지 못하다. 본 논문에서 제안하는 PMI(Privilege Management Infrastructure)기반의 메시지중계시스템은 기존의 구축되어 있는 PKI(Public Key Infrastructure)를 이용하여 정보보호서비스의 인증, 무결성, 기밀성, 부인방지 서비스를 제공하며 PMI을 적용하여 접근제어 서비스를 제공한다. PMI의 속성인증서를 사용하여 실시간적으로 변하는 접근제어 정보의 변화를 수용하며 SOA(Sorce of Authority)를 통해 중앙에서 접근제어정보를 관리한다. 교환되는 데이터는 S/MIME을 기본으로 하여 국제표준을 따르며 S/MIME의 보안 레이블을 이용 데이터의 변경없이 접근제어 정보를 전송할 수 있도록 하였다.

• Proceedings of the Korea Institutes of Information Security and Cryptology Conference
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• 2001.11a
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• pp.313-317
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• 2001

본 논문에서는 전자메일에 보안기능과 공중기능을 함께 부여하는 방법에 대해 기술하고 있다. MIME(Multipurpose Internet Mail Extensions)[8]에 대하여 메시지의 무결성과 전자서명 생성 및 검증, 메시지의 암호화 및 복호화, 부인방지 기능을 지원하기 위해S/MIME(Secure/Multipurpose Internet Mail Extensions)[1][2]을 적용하고 또한 문서에 대한 공증기능을 부여하기 위하여 서명 생성 후 오랜 기간 뒤에도 서명과 서명 생성 시 사용된 인증서의 유효성과 폐지여부를 검증 할 수 있도록 제 3 신뢰기관에 의해 발행된 Timestamp[7]를 적용하였다. 그리고 서명된 메일 형식에 receiptRequest[4] 식별자를 사용하여 수신자의 서명을 포함한 signed receipt[4]를 송신자에게 다시 보내게 하여 메일 수신여부를 검증 할 수 있도록 하였다.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.29 no.9B
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• pp.799-807
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• 2004

In this paper, a security mechanism for a VoIP system based on SIP was implemented. This was satisfied sec security requirement of RFC 3261. The SIP standard proposes a HTTP digest authentication for user authentication mechanism, TLS for hop-by-hop security and S/MIME for end-to-end security. SRTP draft was implemented for media security. We also analyzed security of proposed SIP standard.

• Information and Communications Magazine
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• v.17 no.10
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• pp.140-147
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• 2000

본 논문에서는 EDI개념을 간략히 알아보고 인터넷 환경에서의 EDI 기술 동향을 연구하였다. EDIFACT, MIME, XML/EDI, ebXML등의 표준화 작업을 간단히 소개하고 전통적인 VAN EDI, Web EDI, XML/EDI 메시징 시스템 유형 및 특성을 비교 분석하여 EDI 기술 동향을 조망한다.

• Journal of the Korea Society of Computer and Information
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• v.17 no.1
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• pp.133-140
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• 2012

In SIP(Session Initiation Protocol) service, users should send SIP SUBSCRIBE messages to the SIP server to get subscription informations of the other parties, and total amount of SIP messages becomes large in network as refresh messages and notification messages are generated to each SIP subscription. In this paper, a new resource lists architecture using dynamic notification control method has been proposed to solve these problems. In this architecture, service users can control event notification generation rate dynamically from the server according to the operation circumstances, and users can control generation of notification messages during refresh for maintaining SIP session. Furthermore users can also control generation of notification messages according to session connection conditions. A new resource lists MIME type has been designed, and several parameters for dynamic notification message control have been added to the extended SIP message headers. In this system new resource lists MIME type can be used for processing of the event package. Therefore total amount of SIP messages in network can be largely reduced, and load of the resource lists server for processing messages can be reduced also. The performance of the proposed method has been evaluated by experiments.

• (The) Research of the performance art and culture
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• no.18
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• pp.137-169
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• 2009

This paper pay attention to silent puppets which appear in the traditional puppet performance. Not only movement of silent puppets which are involved with expression of body of the mime, but also various methods overcome limits of the silent are studied in this paper. Through the study of performance method and historic unfolding aspects, I confirm two main points. First point is that overcome limits of the silent, through the diversity of performance aspects. Second point is that silent puppets have been existed since the early stage of history, and show typical unfolding aspects on their way. Combining two main points, We can say that silent puppets go through continuous unfolding aspects on their way and have meaning of existence. The meaning of existence are that silent puppets seek deviant desire which deviate from everyday life and transcendental desire which seek a freedom through an imagination or an idea. It is interesting that the reasons of existence are associated with the emphasis of necessity which is encouragement of audience's desire and imagination that are necessary of accomplish of mime. After all, silent puppets say that diverse attempts which overcome limits of the silent are accomplished with the performance aspects and historic unfolding aspects, and through that sought unusual communication. Through the performance methods and signification aspects, silent puppets say that diverse groping for which maximize of audience's imagination, stimulation of imagination for audience's spontaneousness, and diverse groping for audience mind performance have been performanced as well. I think that those are the voice of silent puppets for activity of mime in the korea.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.13 no.2
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• pp.13-29
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• 2003

Web-mail system is worthy of note as a next generation e-mail system for its mobility and easiness. But many web-mail system does not have any kind of security mechanism. Even if web-mail system provides security services, its degree of strength is too low. Using these web-mail systems, the e-mail is tabbed, modified or forged by attacker easily. To solve these problems, we design and implement secure web-mail system based on the international e-mail security standard S/MIME in this thesis. This secure web-mail system is composed of server system and client system The server system performs basic mail functions - sending/receiving the mails, storing the mails, and management of user information, etc. And the client system performs cryptographic functions - encryption/decryption of the mails, digital signing and validation, etc. Because client system performs cryptographic functions this secure web-mail system gives its reliability and safety, and provides end-to-end security between mail users. Also, this secure web-mail system increase system efficiency by minimize server load.

• Proceedings of the CALSEC Conference
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• 2001.08a
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• pp.191-207
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• 2001

■ The 1/sup st/ Driver: Electronic Documents ■ EDI via VAN ■ Limited use of electronic processing ■ The 2/sup nd/ Driver: Internet Infrastructure ■ Web/EDI, HTTP, FTP, MIME ■ Open network ■ The 3/sup rd/ Driver: XML ■ Enables the definition of platform-independent protocols for the exchange of data ■ Business Processes and Documents in XML format ■ XML/EDI ■ XML message exchange: SOAP(omitted)