• The Journal of Society for e-Business Studies
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• v.8 no.1
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• pp.141-154
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• 2003

SOAP is a protocol used for information exchange in distributed computing environment and SOAP defines mechanisms for message transferring between distributed system and remote procedure call/response process. This SOAP is able to be used independently on hardware platforms and operating systems and program languages because it uses only a text-based XML for protocol. Therefore ebXML that is a standard for E-Commerce adopts SOAP for message exchange. In this paper, we implement XML Hub System using SOAP and apply on the system e-Procurement. By this XML Hub System we can more easily exchange messages for B2B. Accordingly we can manage and integrate a lots of business partners.

• Proceedings of the Korea Information Processing Society Conference
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• 2001.10b
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• pp.1549-1552
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• 2001

무선통신 단말기의 발전과 함께 이를 활용할 수 있는 방법론에 대한 논의도 활발해지고 있으며, 이중 가장 주목받고 있는 것이 이동 통신 단말기를 이용한 무선인터넷 서비스이다. 이러한 서비스의 기반이 되는 것이 무선 인터넷 프로토콜인 WAP(Wireless Application Protocol)이다. 현재의 셀룰러망을 이용한 통신은 비교적 낮은 전송률을 가지고 있어, 대용량의 데이터들을 포함하는 WWW 문서 및 대량의 무선 마크업 언어(WML: Wireless Markup Language) 문서를 전송하기에는 너무 느린 단점을 가지고 있다. 이에 대한 대안으로 본 논문에서는 WAP 포럼 내에서 제정한 프로토콜에 변환기능을 추가한 Gateway를 설계 및 구현하였다.

• Journal of Internet Computing and Services
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• v.7 no.3
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• pp.83-91
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• 2006

In this paper, we improved a cryptography system model based on the secure initial authentication public key with PKINIT of authentication and key recovery protocol. It is applied to all fields of cryptography system using certificate. This study presents two mechanisms to authenticate between member users. The first mechanism is initial authentication and distribution of session key by public key cryptography based on certificate between entity and server, and the second mechanism is a key recovery support protocol considering loss of session key in the secure communication between application servers.

• Proceedings of the Korean Information Science Society Conference
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• 2001.10c
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• pp.316-318
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• 2001

현재의 CDMA(code-division multiple access) 셀룰러망을 이용한 통신은 비교적 낮은 전송률을 가지고 있어 대용량의 데이터들을 포함하는 웹 문서 및 대량의 투선 마크업 언어(WML: Wireless Markup Language) 문서의 전송 속도면에서 미흡한 실정이다. 이에 대한 대안으로 해결을 위하여 WAP(Wireless Application Protocol) 포럼 내에서는 기본적으로 휴대용 기기나 모바일 기기에 최적화한 마이크로브라우저의 규격을 명시함은 물론 프로토콜 전판이나 모빌컴퓨터에 맞는 데이터전송을 최적화시킴으써 무선네트워크와 유선 인터넷간의 게이트웨이 기능을 하는 프록시서버 규격도 확립하였다. 본 논문에서는 이러한 점을 고려하여 Gateway 내에서 프로토콜을 변환하는 시스템을 설계 및 구현한다.

• 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.

• Current Optics and Photonics
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• v.4 no.2
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• pp.103-114
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• 2020

A new optical asymmetric cryptosystem is proposed by modifying the asymmetric RSA public-key protocol required in a cryptosystem. The proposed asymmetric public-key algorithm can be optically implemented by combining a two-step quadrature phase-shifting digital holographic encryption method with the modified RSA public-key algorithm; then two pairs of public-private keys are used to encrypt and decrypt the plaintext. Public keys and ciphertexts are digital holograms that are Fourier-transform holograms, and are recorded on CCDs with 256-gray-level quantized intensities in the optical architecture. The plaintext can only be decrypted by the private keys, which are acquired by the corresponding asymmetric public-key-generation algorithm. Schematically, the proposed optical architecture has the advantage of producing a complicated, asymmetric public-key cryptosystem that can enhance security strength compared to the conventional electronic RSA public-key cryptosystem. Numerical simulations are carried out to demonstrate the validity and effectiveness of the proposed method, by evaluating decryption performance and analysis. The proposed method shows feasibility for application to an asymmetric public-key cryptosystem.

• Electronics and Telecommunications Trends
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• v.28 no.6
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• pp.133-140
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• 2013

기존의 센서 접속 기술은 그 분야에 띠라 다양한 표준과 규격이 존재하였다. 빌딩 자동제어 및 제어 네트워크용으로는 BACnet이 있으며, 공장제어 및 계측제어를 위한 Modbus 등이 다양한 프로토콜이 존재한다. 최근 M2M(Machine-to-Machine) 및 IoT(Internet of Things), WoT(Web of Things) 시대로 접어 들음에 따라 센서 및 각종 디바이스 간에 상호 통신할 수 있는 공통 프로토콜이 필요하게 되었다. IoT 프로토콜로 IEIF(Internet Engineering Task Force) CoAP(Constrained Application Protocol) 프로토콜이 핵심 역할을 하고 있으며, 차세대 센서 접속 프로토콜로 IETF CoAP이 많이 사용될 것으로 예상된다. 본고에서는 IETF CoAP 표준화 동향 및 규격에 대해 살펴본다.

• IEMEK Journal of Embedded Systems and Applications
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• v.5 no.4
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• pp.185-194
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• 2010

In this paper, we propose an application layer-based vertical handover management protocol, called multihoming RTP (mhRTP), for real-time applications with seamless mobility across heterogeneous wireless access networks. The proposed multi-homing RTP provides a soft handover by utilizing multiple available wireless access network interfaces simultaneously. The newly available path is dynamically added to the ongoing session by the mhRTP session manager. Also the decision making of QoS-improving or QoS-guaranteed handover is possible based on the estimation of available bandwidth in each candidate network. The performances of the proposed mhRTP have been analyzed through a series of simulations on OPNET network simulator. From the performance analysis, we confirmed that the proposed mhRTP can provide QoS-guaranteed vertical handover with efficient session managements.

• Journal of IKEEE
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• v.18 no.1
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• pp.146-151
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• 2014

The Smart Grid provide a lot of additional service between ICT(Information Communication Technology) and fusion service. The smart grid using various protocol need to use independent middleware system for exchanging information data. The application system of Smart Grid is exchanging information on the almost All-IP system. The current All-IP middleware system consist of SOAP and RESTful. This paper analysis SOAP and RESTful. This result make use of building Smart Grid System.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.7 no.5
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• pp.986-992
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• 2003

In this paper we challenge the user Authentication using Kerberos V5 authentication protocol in WPKI environment. this paper is the security structure that defined in a WAP forum and security and watches all kinds of password related technology related to the existing authentication system. It looks up weakness point on security with a p개blem on the design that uses wireless public key-based structur and transmission hierarchical security back of a WAP forum, and a server-client holds for user authentication of an application level all and all, and it provides one counterproposal. Therefore, We offer authentication way solution that connected X.509 V3 with using WIM for complement an authentication protocol Kerberos V5 and its disadvantages.