• Proceedings of the Korea Information Processing Society Conference
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• 2012.11a
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• pp.1115-1118
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• 2012

DRM(Digital Right Management)은 디지털 콘텐츠의 사용을 제어하고, 불법복제 및 유통을 방지하는 기술 및 서비스이다. 인터넷의 발달로 디지털 콘텐츠의 불법사용, 불법복제, 불법유통 등이 지속적으로 증가하는 상황에서 DRM의 중요성은 점점 더 커지고 있다. 현재의 DRM 시장은 다수의 DRM 시스템이 혼재하고 있는 상황으로 서로 다른 DRM 시스템간의 상호운용과 표준화에 대한 요구가 커지고 있고 이 문제에 관한 많은 연구가 진행되고 있다. 본 논문에서는 클라우드 컴퓨팅 환경 기반의 서로 다른 DRM 시스템 간 상호운용이 가능한 시스템을 제안한다. 제안하는 시스템은 클라우드 컴퓨팅 서비스 모델 중 SaaS(Software as a Service)를 기반으로 설계 하였으며 현재 사용되고 있는 DRM 시스템 쉽게 적용할 수 있는 장점을 가진다.

• Proceedings of the Korean Information Science Society Conference
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• 2001.04a
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• pp.283-285
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• 2001

DRM(Digital Right Management)은 다양한 채널을 통해 유통되는 디지털 콘텐츠를 불법 사용으로부터 보호하고, 컨텐츠 소유자가 정한 사용 규칙이 지속적(persistent)으로 관리 되도록 하는 기술이다. DRM 서비스의 각 기능을 컴포넌트화 시켜서 재사용성을 강화시키고, 기존 DRM 시스템의 서비스의 문제점을 해결하기 위해서 선(Sun)의 엔터프라이즈자바빈(Enterprise JavaBeans, EJB) 어플리케이션 프레인 워크 상에서 DRM을 구현하였다. DRM 시스템의 가동에 있어서 비즈니스 룰의 충돌은 DRM시스템 작동 여부를 결정할 만큼 중요한 문제이다. 룰 자체가 자연어로 기술되고 언젠가는 모순을 유발할 가능성이 높기 때문에 먼저 명확한 논리식으로 표현하고 LEGO라는 정형 기법 도구를 통해 검증하도록 한다.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.13 no.1
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• pp.205-214
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• 2013

The study of the compatibility of EPUB DRM, granted by the Korea Copyright Commission, as a CT R & D project (Project Title: Development of standard reference software technology for the International Standard EPUB-based eBook DRM) developed standards such as profile standards for encryption, digital signature and authentication certificates and standards for technical terms of rights information. In 2012, these four standards have been established as the Korean Industrial Standards under the names of 'Encryption specification for EPUB DRM', 'the Digital signature specification for EPUB DRM', 'the Certificate specification for EPUB DRM', and 'Definitions of Right Terms for EPUB DRM' through the ODPF(Open Digital Standardization Forum) and the TTA(Telecommunications Technology Association). In spite of the establishment of the eBook DRM standards, however, the absence of the standard technology which supports the compatibility for issues and changes of licenses makes it unable to use eBooks served by different eBook distributors. This study tries to investigate technological approaches to methods of license issues supporting eBook DRM compatibility on the basis of the above-mentioned four EPUB DRM standards and to provide an industrially accepted technological model.

• Journal of Plant Biotechnology
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• v.44 no.1
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• pp.69-75
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• 2017

Dormancy-associated protein (DRM) is involved in the dormancy physiology of plants and is conserved in almost all plant species. Recent studies found that DRM genes are involved in the abiotic stress response, and characterization studies of these genes have been conducted in several plants. However, few studies have focused on DRM genes in woody plants. Therefore, in this study, cDNA coding for DRM (PagDRM1) was isolated from poplar (Populus alba ${\times}$ P. glandulosa), and its structure and expression characteristics were investigated. PagDRM1 encodes a putative protein composed of 123 amino acids, and the protein contains two conserved domains (Domain I and Domain II). PagDRM1 is present as one or two copies in the poplar genome. Its expression level was highest in the stem, followed by mature leaves, roots, and flowers. During the growth of cultured cells in suspension, PagDRM1 was highly expressed from the late-exponential phase to the stationary phase. In addition, PagDRM1 expression increased in response to drought, salt stress, and treatment with plant hormones (e.g., abscisic acid and gibberellic acid). Therefore, we suggested that PagDRM1 not only plays an important role in the induction of dormancy, but also contributes to stress tolerance in plants.

• Proceedings of the Korea Information Processing Society Conference
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• 2017.04a
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• pp.979-981
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• 2017

최근에는 디지털 미디어 기술의 발달로 다양한 형태의 미디어 서비스가 개발되고 있으며 미디어 콘텐츠의 불법 복제를 방지하고 콘텐츠 제작자의 권리를 보호하기 위해 많은 DRM 기술이 개발되고 있다. 여러 개의 DRM을 사용하려면 DRM 서비스 제공 업체와 콘텐츠 제공 업체가 별도의 계약을 통해 상호 의존적인 방식으로 서비스를 제공해야한다는 제약이 있다. 본 논문에서는 클라우드 기반의 DRM 스토어를 제안한다. 이 시스템은 DRM 서비스 제공 업체가 여러 DRM을 쉽게 등록하고 콘텐츠 제공 업체는 자신의 서비스 특성에 따라 DRM을 필요한 만큼 사용할 수 있는 오픈 마켓 형식의 DRM 중계 서비스이다.

• Journal of Korea Multimedia Society
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• v.20 no.6
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• pp.918-926
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• 2017

Various types of media services are emerging due to the development of Internet and digital media production and distribution technologies. Various DRM technologies are being developed to prevent illegal copying of media contents and to protect the rights of content creators. There is a problem that the DRM provider and the content service provider must provide services in a mutually dependent manner through individual contracts. In this paper, we propose a cloud-based DRM market system which can be used only by content service providers when necessary for various DRM. The DRM market system is expected to show the effect of service activation for related small and medium sized companies by providing an interface that satisfies the requirements of DRM providers and contents service providers by using multi DRM technology.

• The Journal of the Korea institute of electronic communication sciences
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• v.3 no.4
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• pp.240-246
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• 2008

This paper propose a method to enhance the performance of digital contents streaming services with the improve DRM system by maximizing the distribute computing performance and minimizing the overheads of security threatens caused by increasing users and sharing contents in P2P environments. By improving authentication protocols and license protocols to perform decryption and execution simultaneously by only download of the license, streaming services are more enhanced rather than existing DRM systems. For evaluate the performance, this paper compared execution time of existing DRM systems which decrypt the encrypted data file before execute with improved DRM system which execute and decrypt the encrypted data file simultaneously. In experiment, improved DRM system can maintain steady bandwidth and reduce the execution time in compare to existing DRM systems.

• Journal of the Korea Society of Computer and Information
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• v.15 no.12
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• pp.117-123
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• 2010

In this paper, we proposed the interoperable DRM(Digital Rights Management) system that allows to redistribute contents safely based on home domain. We tried to solve the problem about contents redistribution between devices under different DRM regime so that we suggested a interoperable DRM system that allow end users to redistribute contents within home domain can solve the restriction and the inconvenience occuring in using contents and at the same time protect the right of contents producer and provider as well. In order that end users can use freely their contents using home digital device without additional payment, we must build a home domain for interoperable DRM system for contents redistribution among devices. If both of exporting device and importing device are authenticated in home domain by HADM(Home Authorized Domain Manager), then the exporting device can redistribute packaged contents under importing DRM regime to the importing device by DIM(DRM Interoperability Manager).

• The Journal of the Korea Contents Association
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• v.1 no.1
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• pp.93-99
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• 2001

The widespread use of the Internet brings about the issue regarding intellectual property and copyright. This paper describes DRM (Digital Rights Management) technologies and their related issues. Current approaches on DRM architecture are examined first. Based on the review, we discuss some security issues that would be essential to design security mood and architecture appropriate for DRM. Having these security issues in mind, we propose a new approach on DRM security architecture, based on our trust model.

• Proceedings of the Korean Society of Broadcast Engineers Conference
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• 2006.11a
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• pp.303-306
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• 2006

디지털 콘텐츠 서비스 제공자들이 증가함에 따라, 다양한 DRM 시스템들이 상호호환성에 대한 고려 없이 개발되었다. DRM 시스템 간의 상호호환성 부재는 소비자들이 콘텐츠를 다양한 디바이스 환경에서 사용하지 못하도록 하고 있으며 디바이스 제조자들에겐 다양한 DRM을 지원해야 하는 부담을 주고 있다. 본 논문에서는 서로 다른 DRM 시스템 사이에 상호호환성을 지원하기 위한 새로운 방법을 제안한다. '툴팩'이라 불리는 본 기술은 Open Frame Work 기반으로 기존의 Open Frame Work 기반의 DRM 기술이 가지고 있던 약점인 DRM 툴(Tool)의 보안성을 높이는 동시에 새로운 DRM 툴을 추가하기 위한 확장성과 인터페이스의 간략화로 효율성을 증가시키는 효과가 있다.