• The KIPS Transactions:PartD
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• v.9D no.6
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• pp.1043-1054
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• 2002

This paper intends to suggest a XML-based secure E-Procurement system using Unified Modeling Language(UML), as an application system for domestic automobile industry. Applying UML methodology, which is Component-based Development (CBD), we analyzed the workflow on procurement operation of automobile industry and implemented a prototype of efficient E-Procurement system for automobile industry, by developing XML/EDI and XML signature. Also, on this paper, object-oriented CBD is employed to minimize the risk of life cycle and reuse software as mentioned to limitation of information engineering methodology. It enables the interoperability with ERP (Enterprise Resource Planning) as corporate legacy system. This system proposes a solution to apply analysis and design of workflow, component development, interoperability with corporate information system, and XML signature for integrity and authentication of electronic documents in other system so far.

• Journal of KIISE:Databases
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• v.32 no.5
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• pp.558-566
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• 2005

The XML is the new standard fir data representation and exchange on the Internet. In this paper, we describe a new approach for evaluating a path-oriented query against XML document. In our approach, we propose the Parallel Match Indexing Fabric to speed up evaluation of path-oriented query using path signature and design the parallel match algorithm to perform a match process between a path signature of input query and path signatures of elements stored in the database. To construct a structure of the parallel match indexing, we first make the binary tie for all path signatures on an XML document and then which trie is transformed to the Parallel Match Indexing Fabric. Also we use the Parallel Match Indexing Fabric and a parallel match algorithm for executing a search operation of a path-oriented query. In our proposed approach, Time complexity of the algorithm is proportional to the logarithm of the number of path signatures in the XML document.

• Proceedings of the Korean Information Science Society Conference
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• 2004.04a
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• pp.214-216
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• 2004

2003년 UN이 공식 표준 언어로 XML(extensblle Markup Language)을 승인함으로써 전자거래를 위한 정보검색과 데이터 전송에 XML의 활용도가 증가하고 있으며, 전자거래의 표준으로 그 중요성이 논아지고 있다. 이처럼 XML이 광범위하게 이용됨에 따라 XML 보안과 관련된 여러 정책들이 활발하게 연구되고 있다. 본 논문에서는 XML 보안 정책들 중에서 XML 서명 기법들에 대해서 살펴보고, 이러한 XML 서명 기법에 TSP(Time Stamping Protocol)를 제공할 수 있는 효율적인 기법을 제시한다. 본 논문에서 제안한 TSP가 제공된 XML 서명기법에서는 사용자의 서명이 추가된 기법으로 기존의 XML 서명 기법과 비교하여 효율적인 특성을 가진다.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2003.05a
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• pp.564-567
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• 2003

XML has weakness problems on document modulation and elimination of data Because of the XML gives priority to present data format, XML electrical signature, XML cryptography, or XML access control is provided to overcome those weakness problems. However, structured XML efficiency contravention problem occurred from XML encryption and absence of protection from DTD attack are still remains unsolved. In this paper, we provide XML scheme that satisfies both efficiency and encryption. DTD is unnecessary because XML scheme supports formatting(Well-Formed XML) XML documents and it also include meta information. Because of the XML scheme has possibility to generate each XML document dynamically and self efficiency investigator rule, it has an advantage on extendability of DID based encryption of XML documents.

• Proceedings of the Korea Association of Information Systems Conference
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• 2002.11a
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• pp.109-119
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• 2002

• Proceedings of the Korean Information Science Society Conference
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• 2001.04a
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• pp.826-828
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• 2001

급변하는 기업환경에 적응하고 경쟁력을 강화하기 위하여 정보 통신기술을 활용하여 업무처리 시간 및 비용을 절감하고, 품질을 향상시키기 위한 대안으로 EDI 시스템이 출현하였으며, 그중 다양한 문서구조 표현이 가능한 XML을 활용한 XML/EDI 가 급속하게 확산되고 있다. EDI 시스템에서는 보안 서비스를 제공되고 있으며, 그 중 전자서명은 중요한 비중을 차지하고 있다. XML을 이용한 전자서명 기법이 W3C에서 제안되어 표준호가 진행되고 있으며 이는 EDI 시스템에서 유용하게 이용 가능한 기술이다. 본 논문에서는 XML 전자서명을 XML/EDI에 적용하여 시스템을 설계하였다.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.7 no.8
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• pp.1698-1707
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• 2003

These days, XML is accepted and used to e commerce market broadly. But by reason of XML document can exist same form logically but several other forms physically, several problems can happen in application that judge effectiveness as physical form such as XML digital signature. Therefore, it is recommending to propose and use canonical XML algorithm to change identical XML document physically equally logically in W3C to solve this problems. We implemented system that nm Canonical XML algorithm that suggested in W3C that can change to mon elaborate regular document. Thus, interoperable with other application that takes W3C recommendation Also, as well as use in digital signature system for web service is useful, use in several system that physical identify is required when it exchanges na document for web service interoperability are considered to be valuable. Moreover, Adding the transformation ability between universal encoding scheme and EUC­KR that is internal encoding scheme should be Canonical XML Algorithm that is suited to internal circumstances, and this should be a foundation technique of international interoperability confirmedness.

• Journal of the Korea Computer Industry Society
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• v.6 no.3
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• pp.457-464
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• 2005

Internet becomes absolutely necessary tools due to rapid progress of information technology. Educational correspondence abount an age of information demand is a education focused on a learner and remote education based on information technology. Internal and external standardization working is accelerated and recently XML security studies are activated using XML which is next generation web standard document format. But using these are main contents that users have to pay about Certification service to get CA certificate from 2004 me. This paper propose multiplex Certification remote education agent system using XML digital signature to satisfy security requirement.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.11 no.7
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• pp.1311-1317
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• 2007

Recently, due to the popularity and explosive growth of the Internet, the information exchange is increasing so rapidly over the Internet. Also the XML is becoming a standard as well as a major tool of data exchange on the Internet and thus we propose the new indexing technique for evaluating a path-oriented query and design and implementation of Path-oriented Query Processing System to give useful for users. In proposed indexing technique, which combined a binary trio structure with a path signature file to improve performance of XML document retrieval.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.15 no.1
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• pp.3-15
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• 2005

As a large quantity of information is presented in XML format on the web, there are increasing demands for XML security. Research area or n security is about Encryption Digital signature, Key management and Access control. until now research on U security has been focused on the security of data network using digital signature and encryption technology. As XML data become extensive and complex XML security comes to involve not only network security but also managerial security. Managerial security is guaranteed through access control. But XML Encryption supports simple network security. So it can't support multiple users and multiple access control policies. In this paper, we propose an integration method of encryption and access control policy for securing XML documents. This methodology can supper multiple authorizations of multiple users with integrating access control. And this can reduce the cost of evaluation process of the existing complicated access authorization with pre-processing.