• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2013.05a
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• pp.818-819
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• 2013

This paper propose a contents security technique for digital holographic display service. Digital holographic video system assumes the existing service frame for 2-dimensional or 3-dimensional video, which includes data acquisition, processing, transmission, reception, and reconstruction. In this paper, we perform the encryption of RGB image and depth-map for such a system. The experimental results showed that encrypting only 0.048% of the entire data was enough to hide the constants of the RGB image and depth-map.

• The Journal of Society for e-Business Studies
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• v.8 no.4
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• pp.167-181
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• 2003

The contents for multimedia are very activated along to revolution of Internet. So this fact allows the contents for multimedia to be commercialized. These contents , however, included much vulnerability that it is difficult to be commercialized because attackers easily reproduce that. Many developers want to use watermarking method as the technique to protect the contents for multimedia, but it is very vulnerable to use only one method. This paper proposes the Secure DRM system which protects the contents for multimedia using Public Key Infrastructure and steganography methods. The SDRM system is more powerful than general DRM systems in that it has the special feature of watermarking and steganography techniques. We can prevent the attackers from reproducing and stealing the contents illegally, and authenticating users through SDRM systems.

• Journal of Digital Convergence
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• v.11 no.11
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• pp.675-682
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• 2013

This paper tries to solve the problems which previous methods have the model using smart card for protecting digital contents. This study provides a contents distribution model to protect the rights of author, distributor, and user as well as user's information by using technologies such as cryptography, DRM(Digital Right Management), access control, etc. The proposed system is evaluated as the most safety model compared with previous methods because it not only solves the problems which the previous methods have, but also protects four type of risks such as use of contents which other mobile devices download, the attack on the key to decode the message, the attack on leaking the contents, and the internal attack such as an illegal reproduction.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.18 no.6A
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• pp.185-190
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• 2008

The devices for the digital home in ubiquitous environment aim at providing multimedia services which are not limited to the time and space. However, it does not ensure the fair use of digital contents and causes damage to the contents providers because of indiscriminate distribution of digital contents and the use of illegal contents. DRM system for solving this problems cannot protect the license stored on digital home devices and manage license by redistribution of contents. In this paper, digital forensic model that enables the misuse detection and previous interception of large-scale illegal distribution for contents and license, and also enables the creation and management of digital evidence for legal countermeasure.

• Journal of Digital Contents Society
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• v.19 no.2
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• pp.293-300
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• 2018

This study explored the security of Industry 4.0 such as security trends and security threats in Industry 4.0, and security system in Industry 4.0. The threat elements in Industry 4.0 are changing from ICT to IoT and to CPS security, so security paradigm and security System should change accordingly. In particular, environmental and administrative security are more important to solve CPS security. The fourth industry-age security should change to customized security for individual systems, suggesting that the security technology that combines hardware and software in product production design should change from the beginning of development. The security system of the fourth industry proposes design and implementation as a CPS security system as a security system that can accommodate various devices and platforms from a security system in a single system such as a network to an individual system.

• Proceedings of the Korea Contents Association Conference
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• 2006.11a
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• pp.287-291
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• 2006

E-learning has increased on importance as people realize that the use of technology can improve the teaming process. Consequently, new learning environments have been developed. However, in general they are oriented to address a specific e-learning functionality. Therefore, in most of the cases, they are not developed to interoperate with other e-learning tools, which makes the creation of a fully functional e-learning environment more difficult. We analyses of total information security infrastructure of school affairs information system for secure ubiquitous campus.

• Proceedings of the Korea Contents Association Conference
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• 2004.11a
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• pp.302-307
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• 2004

It need remote storage system using iSCSI to overcome a limit of PDA storage device used in currently wireless network environment, and IPSec to solve a security problem of wireless environment increasing continually. In this paper, it design and implement iSCSI to use a remote storage system on PDA, and IPSec for security. The experimental results in real environment show a system performance.

• The Journal of the Korea Contents Association
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• v.10 no.11
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• pp.262-274
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• 2010

In Welfare Center for the disabled, under the Government's information acceleration plan, the computer system has been developed starting from work standardization in 2001 but it has been emphasized only on the technical and customer convenience side leaving out preparation for the side effects of them. Therefore this article will seek the necessity of personal information protection, legal basis in the Welfare Center for the disabled. Additionally after analyzing current status for the personal security of Welfare Center for the disabled, establishing an alternative plan for personal security policy's way could be addressed. Increasing education for awareness stress of personal information security, and preparing institutional protection apparatus from applying life cycle of personal information would be an alternative plan for personal information protection for Welfare Center for the disabled. Also frequent monitoring of accessing personal information from the computerized system should be achieved. It is impossible to recover damage caused by leak of personal information although post actions are progressed. From this essay, awareness of personal information protection should be newly revised for both the Social Welfare Organization and the Disabled welfare center, and also technical, institutional strategy's action should be arranged.

• Journal of Digital Contents Society
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• v.17 no.6
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• pp.499-507
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• 2016

The era of IoT, which figures exchanging data from the internet between things is coming. Recently, former electric power energy policy paradigm, namely Supply side paradigm, is changing, because electric power energy consumption is rapidly increasing. As new paradigm for this limit, convergence of existing electric power grid and ICT(Information and Communication Technology) will accelerate intellectualization of electric power device, its operation system. This change brought opened electric power grid. Consequently, attacks to the national electric power grid are increasing. On this paper, we will analyze security threats of existing IoT, discuss security weakness on electric power industry IoT and suggest needed security requirements, security technology.

• Proceedings of the Korea Contents Association Conference
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• 2004.11a
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• pp.291-295
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• 2004

As a large quantity of information is presented in XML format on the web, there are increasing demands for XML security. Until now research on XML security has been focused on the security of data network using digital signature and encryption technology. As XML data become extensive and complex however XML security comes to involve not only network security but also managerial security. But XML encryption support simple network security. So it cannot support multiple users and multiple access control policy. In this paper, we propose an integration method of encryption and access control policy for securing XML documents. This methodology can support multiple authorization of multiple users with integrating access control. And this can reduce the cost of the existing complicated access evaluation process of access control by using pre-processing.