• Journal of Advanced Navigation Technology
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• v.18 no.1
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• pp.44-49
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• 2014

In recent, watermarking technology have been paying attention to methods avoiding illegal use and reproduce of digital contents. Then, in order to protect the right of digital contents, a watermark image is inserted into original images. In different watermarking methods, several technologies using Ant Colony Algorithm have been studied. In this paper, we propose a watermarking method using a discrete optimization method in the ants colony algorithm. This proposed method resembls the process that ants follow the pheromone traps to find out food. And when a watermark image is inserted into original images, the proposed method considers the deployment of obstacles or the balance between cells in the entire digital image. Simulation results show that the proposed method is increased in robustness of watermarked image and is decreased in the perceptibility of watermarking compared to the previous methods.

• Journal of Advanced Navigation Technology
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• v.26 no.4
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• pp.244-248
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• 2022

The various digital services that people are experiencing recently are bringing about changes in the daily lives, and these changes are due to the spread of the Fourth Industrial Revolution. The 4th Industrial Revolution is based on the development of ICT technology, and ICT technology inevitably generates issues such as the use and protection of personal information as well as the use of public data. Accordingly, countries around the world are making efforts to revitalize new industries by wisely solving conflicting issues between the use and protection of personal information through legislation. There are some differences in the protection and use of personal information in Korea, the United States, and the EU. Korea trys to make the legislation that prioritizes the use of data, and the United States establishes individual laws governing the protection of personal information by sector, while the EU has clarified the strengthening personal information protection. This paper aims to find out how personal information protection is defined in Korea, the United States, and the EU through enacted laws and organize the direction of the future policies.

• Convergence Security Journal
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• v.6 no.4
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• pp.21-27
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• 2006

With the introduction of sound source sharing over the high speed internet and portable digital audio, the digitalization of sound source has been rapidly expanded and the sales and distribution of sound sources of the former offline markets are stagnant. Also, the problem of infringement of copyright is being issued seriously through illegal reproduction and distribution of digitalized sound sources. To solve these problems, the DRM technology for protecting contents and copyrights in portable digital audio device began to be introduced. However, since the existing DRM was designed based on the fast processing CPU and network environment, there were many problems in directly applying to the devices with small screen resolution, low processing speed and network function such as digital portable audio devices which the contents are downloadable through the PC. In this study, the DRM structural model which maintains similar security level as PC environment in the limited hardware conditions such as portable digital audio devices is proposed and analyzed. The proposed model chose portable digital audio exclusive device as a target platform which showed much better result in the aspect of security and usability compared to the DRM structure of exiting portable digital audio device.

• Proceedings of the Korean Society of Computer Information Conference
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• 2014.01a
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• pp.119-122
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• 2014

인터넷과 스마트폰의 보편화로 디지털 저작물의 생산이 고품질 콘텐츠로 연계되어 발전함에 따라 저작권은 오늘날 국민의 재산을 지키고 문화산업 등 21세기 산업을 성장시키는 원동력이자 국가경쟁력의 원천으로 주목받고 있다. 이와 같이 저작권의 중요성이 커짐과 동시에 전 세계적으로 저작권 교육의 중요성도 강조되고 있다. 하지만 현재 한국에서는 초등학생에게 적합한 저작권 교육 체계 및 수업 방법에 관한 연구가 미비하여 저작권 교육이 잘 이루어지지 못하고 있는 실정이다. 이에 본 연구에서는 교육현장에서 활용할 수 있는 저작권 교육의 새로운 방안을 제시하고 학습자 주도의 디지털 스토리 제작 과정을 경험하는 디지털스토리텔링을 기반 저작권 교육 프로그램을 설계하였다. 본 연구에서 구현한 디지털 스토리텔링 기반 저작권 프로그램을 통해 초등학교 학생들의 저작권에 대한 인식 및 의식 확대와 저작권 보호 실천 의지 강화를 기대하며 초등학교에서의 효과적인 저작권 교육활동이 이루어지길 기대한다.

• The KIPS Transactions:PartC
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• v.13C no.2 s.105
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• pp.155-160
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• 2006

Currently we have many DRM(Digital Rights Management) products but they do not provide interoperability between them. It causes user's inconvenience to use a DRM content and places restrictions to digital content distribution. DRM standardization to solve these sorts of problem has been discussed but dominant standardization which can provide DRM interoperability has not been made. In this paper, we propose DRM interoperable scheme by connection between heterogeneous DRM systems (EU) which uses export and import functions. Proposed EXIM can make a DRM content exchangeable between heterogeneous DRM systems with an open type of technology specification although they don't have to open their DRM structure.

• Journal of the Korea Society of Computer and Information
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• v.12 no.3
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• pp.59-65
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• 2007

In this paper, we proposed the DRM(Digital Rights Management) system that allows to redistribute contents safely based on home domain. This DRM system for contents redistribution 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. To play contents using home digital device, we must build home domain for contents redistribution among devices. That is to say, devices that are registered with home domain can redistribute contents to other devices at same domain. The domain must send redistribution-specifics to DRM server, so that user can pay reasonable amount for using the contents. Futhermore, by restricting within domain the right of contents redistribution, one can strictly prohibit the illegal redistribution.

• Journal of Digital Contents Society
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• v.16 no.2
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• pp.345-353
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• 2015

Security Management System is a system which operates in the security control center for security control. All living things across the Internet in recent years, with the rapid increase in the subscriber base has increased the need for network security dramatically depending on yirueojim through web services, thus cyber security sheriff, I have a big issue to build a security management system, each agency and perform control tasks. But the security functional requirements for security management system would not specified exactly, in developing a security management system to build and design a situation that PP's needs require a lot of trouble. In this paper, we develop a Managed Security System Protection Profile for the security functional requirements specification of the security management system.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.26 no.3
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• pp.701-712
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• 2016

The number of subscriber of digital pay TV service such as Digital Cable TV and IPTV is increasing from various kind of service provider world widely. These services require personal information of users to provide VOD(Video on Demand) and customized contents. Therefore, massive amount of personal information collected by service provider can cause social confusion such as leakage of privacy and property damage. This paper investigates whether broadcasting stations are providing enough notification for privacy policy and methodology of collecting private information in proper way. Furthermore, we analyze actual network traffic of IPTV service between user and service provider to suggest solution of privacy protection along with current status analysis.

• Proceedings of the Korea Information Processing Society Conference
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• 2010.11a
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• pp.1339-1341
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• 2010

디지털 TV 시대를 맞아 다양한 형태의 사용자와 상호작용할 수 있는 콘텐츠의 개발이 활성화되고 있고, 이에 따른 IPTV 의 활성화와 함께 방송 콘텐츠의 2 차 이용에 사용되는 VOD 의 제작과 활용이 높아지고 있다. 제작되는 VOD 는 2 차 이용을 위해 영화, 드라마, 다큐 등 다양한 콘텐츠를 포함하고 있는데, 이를 시청하기 위해서는 반드시 다운로드를 받아야 한다. 이러한 다운로드는 1 차적인 사용자 인증 및 기기 인증 후에는 일방적인 전송을 수행하고, 이미 다운로드 되어 있는 파일은 별도의 처리 없이 재생이 가능하기 때문에 VOD 의 불법적인 배포에 대응하기 어렵다. 따라서 VOD 콘텐츠가 다운로드 된 후, 반복 재생 시에 영상에 포함된 인증 정보를 통해 콘텐츠의 보호를 위한 모델을 제안한다.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2007.10a
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• pp.611-614
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• 2007

Due to illegal copying and distribution via the internet, the digital media that have been introduced create certain intellectual property issues. Because of this, several intellectual property groups have been created to create and maintain Digital Rights Management systems (DRM), in order to crack down on illegal and unauthorized copying. However, these systems are often created by many different companies, which leads to problems of interoperability. Despite attempts to regulate DRM systems, including the MPEG group's Intellectual Property Management and Protection" system, the system is still struggling to maintain some sort of interoperability between differing protocols. In this paper, we designed and implemented a DRM system with Gstreamer, following the DMP.