• 정보보호학회논문지
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• 제28권3호
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• pp.551-561
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• 2018

최근 양자 컴퓨팅을 활용한 연산 기술이 발달함에 따라 기존 암호 시스템들에 대한 안전성이 위협받고 있다. 이에 따라 양자 컴퓨터를 이용한 분석 공격에도 견딜 수 있는 새로운 포스트 양자 암호시스템(post-quantum cryptosystem)에 대한 연구가 활발하다. 그럼에도 불구하고 NTRU와 같은 격자 기반의 포스트 양자 암호시스템도 구현상에서 발생하는 취약점을 이용하는 오류 주입 공격에 의해 비밀 키가 노출될 수 있음이 밝혀졌다. 본 논문에서는 NTRU 서명 시스템에 대한 기존의 오류 주입 공격 대응 기법을 분석하고 효율성과 안전성이 개선된 새로운 대응 기법을 제안한다. 제안된 대응 기법에 대해 시뮬레이션을 수행한 결과, 오류 주입 검출율이 우수하며 구현이 효율적임을 확인하였다.

• 산업경영시스템학회지
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• 제37권2호
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• pp.62-69
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• 2014

The capability and cost effectiveness of UUV and USV bring to underwater survey, target detection and identification operations have been widely demonstrated and accepted in recent years. Future USV systems may deploy UUVs to gain the advantage of higher area coverage rates through multiple and simultaneous operations. In this paper, we present an architecture of USV and UUV for mine countermeasure with results of measures on effectiveness.

• ETRI Journal
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• 제36권3호
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• pp.469-478
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• 2014

RSA signature algorithms using the Chinese remainder theorem (CRT-RSA) are approximately four-times faster than straightforward implementations of an RSA cryptosystem. However, the CRT-RSA is known to be vulnerable to fault attacks; even one execution of the algorithm is sufficient to reveal the secret keys. Over the past few years, several countermeasures against CRT-RSA fault attacks have tended to involve additional exponentiations or inversions, and in most cases, they are also vulnerable to new variants of fault attacks. In this paper, we review how Shamir's countermeasure can be broken by fault attacks and improve the countermeasure to prevent future fault attacks, with the added benefit of low additional costs. In our experiment, we use the side-channel analysis resistance framework system, a fault injection testing and verification system, which enables us to inject a fault into the right position, even to within $1{\mu}s$. We also explain how to find the exact timing of the target operation using an Atmega128 software board.

• 한국군사과학기술학회지
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• 제15권4호
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• pp.410-416
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• 2012

In recent years, unmanned underwater vehicles(UUVs) have emerged as viable technical solution for conducting underwater search, surveillance, and clearance operations in support of mine countermeasure missions(MCMs) because of her autonomy and long time endurance capability. It is necessary for UUV for MCM system design to define system specification from various configuration alternatives. This paper introduces a simulation model for mine countermeasure mission effectiveness analysis and presents some simulation results under various tide conditions for validation of the proposed simulation model.

• 한국조명전기설비학회:학술대회논문집
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• 한국조명전기설비학회 2008년도 추계학술대회 논문집
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• pp.359-362
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• 2008

Middle domestic the occurrence size which stews recently from the Korean Peninsula circumference country is augmenting on a large scale about earthquake about safe countermeasure part from the existing Natural Countermeasure Law 2008. Refers with the Earthquake Disaster Countermeasure Law to be new standard contents establishment by law and strengthened in March. Consequently the research is propelled about electric equipment earthquake-proof plan and countermeasure. The present paper investigated an equipment by domestic facility present condition about the change disappointment electric equipment which can supply all the member in the building an investigation analysis about problem point and improvement fact. Also about overseas electric equipment investigated about earthquake-proof plan relation system and facility present condition. Investigated the electric equipment earthquake-proof plan pertinent data which is advanced from like this existing nation and the equipment and application direction must apply to domestic presented. With character presents following the guide about electric equipment earthquake-proof plan becomes feed with the fact that will be able to use.

• 대한전기학회:학술대회논문집
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• 대한전기학회 1997년도 하계학술대회 논문집 D
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• pp.803-806
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• 1997

The AC induced voltage on underground pipelines not only do harm to workers and instruments, but also cause big trouble in some case. This paper gives the mechanisms, examples, and countermeasure for the AC induced voltages which are caused by the resistive coupling between the grounding system of the 22.9kV distribution power system and the underground pipeline.

• 한국조명전기설비학회:학술대회논문집
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• 한국조명전기설비학회 2004년도 춘계학술대회 논문집
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• pp.110-115
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• 2004

Examine merits and demerits and obstacle factor that exist to all direction of digital infratechnology that is supplied on industry whole according to development special quality of computer by development of computer and Information Technology and electricity electron information communication facility that basic impulse insulation level does not exist examined scorched earth or an interference problem factor and countermeasure of semiconductor degauss of factor and electricity electron information transmission system that is numbed or causes system down.

• 한국컴퓨터정보학회논문지
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• 제7권3호
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• pp.60-67
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• 2002

정보화 시대의 역기능으로서 존재하는 정보시스템에 대한 보안 위협은 날로 증가하고 있으며 이에 대한 체계적인 보안관리가 중요시되고 있다. 보안관리에 있어서 가장 중요한 것은 위협의 근원을 파악하여 대책을 수립하기 위한 위험분석이다. 따라서 제안모델은 보안성향상을 위하여 보안정책수립을 조언하도록 하고 경제적인 보안대응책 수립을 위하여 위험산출단계에 대하여 신뢰성을 향상 시켰다. 특히 대응책 단계에서 자산에 대하여 보안등급을 부여하여 자산간의 상호의존도를 검사하게 하고, 제시된 대응책의 구현은 표준모델과 다르게 제안모델에서는 자산별 제약사항을 식별하도록 하여 불필요한 대응책을 구현하지 않도록 하여 경제적인 대응책의 구현이 이루어질 수 있도록 모델을 개선하였다.

• 전기저널
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• 3호통권111호
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• pp.40-44
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• 1986

• 한국학교보건학회지
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• 제25권2호
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• pp.143-146
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• 2012

Purpose: The purpose of this study was to review the academic development of school health system and projects implemented in Korea since 1945. Methods: This study analyzed and reviewed literatures to find out the process of the development of school health system and projects implemented in Korea. Results: The history of school health in Korea since 1945 could be divided into three periods according to the development of school health system and projects; countermeasure period (1945-1969), support period (1970-1999), and innovation period (2000~). The major school health system and projects were focused on the health screening and prevention, health management and support, and health promotion for each period. Conclusion: School health system in Korea has been set successfully due to school health law(1967) and school meal law(1981), and various countermeasure, support, and innovation projects had implemented during last 60 years.