• Proceedings of the Korean Society of Broadcast Engineers Conference
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• 2011.11a
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• pp.366-368
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• 2011

In this paper, we introduce a new kind of expressions for privacy protection techniques in database, such as K-anonymity L-diversity and t-closeness. With such kind of expressions, we provide a new way to solve the privacy protection problems, such as Linear programming, Non-linear programming, Integer programming and so on. Also most of the heuristic techniques are also efficient to be adopted under the expressions given.

• International Journal of Computer Science & Network Security
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• v.22 no.5
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• pp.245-249
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• 2022

This paper explored gifted students' perspectives on using educational technologies in their schools in the Saudi context. Adopting a descriptive research approach, a questionnaire was used to collect information from a sample of 196 gifted secondary school students in Jeddah. Findings showed that educational technology was used to a high degree, with an overall mean of 3.74 and 4.06 for the degree of importance of technological usage. Based on the findings, the researcher forwards some recommendations for effectively using such technologies to promote gifted students' abilities and talents.

• International Journal of Computer Science & Network Security
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• v.22 no.9
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• pp.137-142
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• 2022

This paper argues for modern technologies in the educational process. It specifically outlines issues germane to virtual and augmented reality. It begins with an account on virtual reality and augmented reality, and touches on their characteristics, the advantages, obstacles and applications. It also discusses some relevant studies that emphasized the role of virtual and augmented reality in education, the difference between two terms. The paper ends with a note of vision on how to activate them in educational institutions.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.24 no.1
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• pp.15-29
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• 2014

Increasing the smart instrument based social and economical activity, problems of electronic business's safety, reliability and user's privacy are be on the rise. so variety standard cryptography algorithms for information security have been developed in korea and How to efficiently implement them in a variety of environments is issued. ARIA and SEED, developed in Korea, are standard block cipher algorithm to encrypt the 128-bit plaintext, are each configured Feistel, SPN structure. In this paper, SEED and ARIA were implemented using the GEZEL language that can be used easily in the software designer because grammar is simple compared to other hardware description language. In particular, in this paper, will be described in detail the characteristics and design method using GEZEL as the first paper that implements 128bits ARIA and SEED and it showed the flexibility and efficiency of development using GEZEL. SEED designed GEZEL is occupied 69043 slice, is operating Maximum frequency 146.25Mhz and ARIA is occupied 7282 slice, is operating Maximum frequency 286.172Mhz. Also, Speed of SEED designed and implemented signal flow method is improved 296%.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.25 no.5
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• pp.1153-1166
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• 2015

With the acceleration of information digitization caused by fast growth of Information Technology, the application of digital forensics has increased but it is underestimated because digital evidence is easy to forge. Especially, the evaluation of the reliability of digital forensics organization is judged only by judges domestically because there is no objective verification system or evaluation method of the capability of digital forensics organization. Therefore, the evaluation model and indices of the capability of digital forensics concentrated on the digital forensics organization, personnel, technology, facilities and the procedure in domestic justice system was presented in this research after reviewing the domestic and foreign evaluation method and the standard of the capability of digital forensics and information security. The standard for judicial evaluation of digital evidence and composition, management, evaluation of digital forensics organization would be presented based on this research.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.27 no.3
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• pp.467-476
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• 2017

In this paper, we analyze Generalized Feistel Network(GFN) Type I, Type II, Type III that round function use SP update function, secret S-box and $k{\times}k$ MDS matirx. In this case an attacker has no advantage about S-box. For each type of GFN, we analyze and restore secret S-box in 9, 6, 6 round using the basis of integral cryptanalysis with chosen plaintext attack. Also we restore secret S-box in 16 round of GFN Type I with chosen ciphertext attack. In conclusion, we need $2^{2m}$ data complexity and ${\frac{2^{3m}}{32k}},{\frac{2^{3m}}{24k}},{\frac{2^{3m}}{36k}}$ time complexity to restore m bit secret S-box in GFN Type I, Type II, Type III.

• Journal of Internet Computing and Services
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• v.17 no.1
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• pp.91-99
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• 2016

A security system in Android OS adopts sandbox and an permission model. In particular, the permission model operates the confirmation of installation time and all-or-nothing policy. Accordingly, the Android OS requires a user agreement for permission when installing an application, however there is very low level of user awareness for the permission. In this paper, the current status of permission requirement within mobile apps will be discovered, and the key inspection list with an appropriate method, when a mobile service provider autonomously inspects the violation of least privilege around financial companies, and its usefulness will be explored.

• Convergence Security Journal
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• v.17 no.1
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• pp.53-61
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• 2017

IoT technology is evolving and related services and technologies are spreading throughout the life. These IoT technologies make life easier for users, but they also have big threats like double-edged swords. Therefore, the importance of security is emerging and related researches are actively proceeding. Existing researches have focused on reducing the computational load on the constrained devices, performing the DTLS for the end-to-end security from a network architecture perspective. In this paper, we propose a DTLS protocol that uses ECQV certificate instead of existing X.509 certificate to reduce the load of DTLS protocol from the network perspective. In addition, the proposed scheme is implemented and compared with PSK and RPK modes.

• Electronics and Telecommunications Trends
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• v.37 no.4
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• pp.36-45
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• 2022

As the interest in achieving an intelligent society grows with the fourth industrial revolution's development, information and communications technologies technologies like artificial intelligence (AI), Internet of Things, virtual reality, information security, and blockchain technology are being actively employed in different fields for achieving an intelligent society. With these modifications, the information security paradigm in industrial and public institutions, like personal sensitive data, is quickly changing, and it is exposed to different cyber threats and breaches. Furthermore, as the number of cyber threats and breaches grows, so does the need for rapid detection and response. This demand can be satisfied by establishing cyber training programs and fostering experts that can improve cyber security abilities. In this study, we explored the domestic and international technology trends in cyber security education and training facilities for developing experts in information security. Additionally, the AI technology application in the cyber training ground, which can be established to respond to and deter cyber threats that are becoming more intelligent, was examined.

• Journal of Korean Society for Quality Management
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• v.51 no.3
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• pp.435-444
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• 2023

Purpose: To attain advanced performance certification, safety aspects along with functionality and performance are essential. Hence, this study suggests radiation leakage assessment methods for aviation security equipment during its performance certification. Methods: Detection technology guided the choice of radiation leakage assessment targets. We then detailed measurement and evaluation methods based on equipment type and operation mode. Equipment was categorized as container or box types for establishing measurement procedures. Results: We've developed specific radiation leakage assessment procedures for different types of aviation security equipment, crucial for ensuring airport safety. Using these procedures allows efficient evaluation of compliance with radiation leakage standards. Conclusion: The suggested radiation leakage assessment method aims to enhance aviation security and reliability. Future research will focus on identifying risks in novel aviation security equipment detection technologies and establishing safety standards.