• Journal of Korea Multimedia Society
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• v.12 no.7
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• pp.953-961
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• 2009

The usage of DRM-applied digital contents reduces user's convenience, thus it leads the many users to avoid using DRM-applied digital contents. In this paper, therefore, we propose the new distribution model in which the users, who purchase the DRM-applied digital contents, can resale freely those contents to the other users. As a result, the proposed model induces the users to distribute contents soundly by including them in one of distribution objects. For the purpose of this, in this paper, we propose that a packaged content and usage rights are transferred to another user by using a method which based on some existing digital ticket or coupon. In addition, the security of the proposed system is discussed for the double transfer, the forgery and the modification of usage rights, and the reproduction of contents and usage rights.

• Journal of Korea Technology Innovation Society
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• v.8 no.spc1
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• pp.323-336
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• 2005

Digital content industry is growing rapidly because of the property of high-speed networking and greater demand for digital fulltext-image. However, we know the fact that it is many difficulty in production and supply for good quality of content. Hereupon, we suggest digital fulltext-image service framework to protect copyright. More concretely, we propose integrated model and reference model to securely serve digital fulltext-image by recompositing core objects and reconstructing the value-chain structure of digital content industry to framework including the process(from its production (creators or copyrighters) to consumption (users or consumers)). Also, we construct the digital fulltext- image service system based on reference model and reconstruct its interface that occurs between core subjects.

• Proceedings of the KIEE Conference
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• 2007.07a
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• pp.1662-1664
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• 2007

As the logistic environment of digital contents is rapidly changing, the protection of the digital rights for digital content has been recognized as one of critical issues. Digital Right Management(DRM) has taken much interest Internet Service Provider(ISP), authors and publishers of digital content as an interested approach to create a trusted environment for access and use of digital resources. This paper propose an interested digital rights protection scheme using license agent to address problems facing contemporary DRM approached : static digital rights management, and limited application to on-line environment. We introduce a dynamic mission control technology to realize dynamic digital rights management. And we incorporate license agent to on- and off-line monitoring and tracking. The proposed system prevent illegal access and use by using PKI security method, real time action monitoring for user, data security for itself.

• Proceedings of the Korea Information Assurance Society Conference
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• 2004.05a
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• pp.275-282
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• 2004

As the logistic environment of digital contents is rapidly changing, the protection of the digital rights for digital content has been recognized as one of critical issues. Digital Right Management(DRM) has taken much interest Internet Service Provider(ISP), authors and publishers of digital content as an interested approach to create a trusted environment for access and use of digital resources. This paper propose an interested digital rights protection scheme using license agent to address problems facing contemporary DRM approached : static digital rights management, and limited application to on-line environment. We introduce a dynamic mission control technology to realize dynamic digital rights management. And we incorporate license agent to on- and off-line monitoring and tracking. The proposed system prevent illegal access and use by using PBD security method real time action monitoring for user, data security for itself.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.16 no.3
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• pp.101-113
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• 2006

This study is intended to provide more secure contents authentication and user authentication by applying public key algorithm and hardware binding to the DRM system. The proposed system is capable of protecting distributed contents and copyrights as well as resetting any interoperability issues among those involved in transparent and secure contents distribution. The proposed algorithm also affords transparency in the DRM distribution system and protection from unauthorized distribution.

• Proceedings of the Korean Society of Broadcast Engineers Conference
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• 2004.11a
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• pp.285-288
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• 2004

High-quality digital broadcasting contents are susceptible to illegal copy and unauthorized redistribution, which makes broadcasters difficult to protect valuable media assets. So, broadcasters and content providers need the technology for copyright protection of professional digital content. Digital watermarking technology is one of the most actively developed solutions for the copyright protection. This paper suggests the requirements of watermarking technology in DTV(Digital TV) environment for copyright protection and shows the developed real-time watermark embedding/detecting system for HD(High Definition)/SD(Standard Definition) video and experimental results of the system against watermark attack tests. Our watermarking system meets the watermarking requirements of invisibility, robustness and security of DTV environment.

• 한국정보통신설비학회:학술대회논문집
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• 2007.08a
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• pp.142-146
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• 2007

Digital Rights Management (DRM) technology has been widely used for protecting the digital contents over the recent years. But the digital contents protected by DRM are vulnerable to various video memory capture programs when DRM packaged contents are decrypted on the consumers' multimedia devices. To make up for this kind of DRM security holes the Forensic Marking (FM) technology is being deployed into the content protection area. Most leading DRM companies as well as big electronics companies like Thomson and Philips already have commercial FM solutions. Forensic Marking technology uses the digital watermarking to insert the user information such as user id, content playing time and etc. into the decrypted and decoded content at the playback time on the consumer devices. When the content containing watermarked user information (Forensic Mark) is illegally captured and distributed over the Internet, the FM detection system takes out the inserted FM from the illegal contents and informs contents service providers of the illegal hacker's information. In this paper the requirements and test conditions are discussed for the commercial Forensic Marking systems.

• Journal of the Korea Computer Industry Society
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• v.5 no.8
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• pp.829-840
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• 2004

Business model in Web environments is usually provided by digital data. Information exchange of users and service providers should be performed by encryted data. Encrypted protection. In this paper, We have prevented using contents by users is not accessed based on RBAC. in this paper, We propose a new DB encryption scheme which use RBAC and digital signature based on PMI.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.31 no.2C
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• pp.200-207
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• 2006

Recently, with the development of information and communication technology, digital pay-TV technology is paid attention. So the Protection of the provided contents is becoming more important. However, in order to encourage an active based on digital TV, the contents and information sent and received respectively by the broadcaster and the subscriber must be protected. Therefore, in this paper, I analyze the requirements to protect the digital contents, the security and efficiency of the previous digital pay-TV system model. Then I proposed a key management model for digital pay-TV system.

• Journal of Korea Multimedia Society
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• v.8 no.5
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• pp.679-690
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• 2005

Business model in Web environments is usually provided by multimedia data. Information exchange between users and service providers should be made in encrypted data. Encrypted data are secure from being hacked. Application of DB encryption is a main technology for contents protection. We have applied the access control based on RBAC and prevented the unauthorized users from using the contents. In this paper, we propose a new DB encryption scheme which uses RHAC and digital signature based on PMI.