• The Journal of Society for e-Business Studies
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• v.25 no.3
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• pp.109-130
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• 2020

Recently, the importance of research and development for technological innovation is increasing. The rapid development of research and development has a number of positive effects, but at the same time there are also negative effects that accelerate crimes of information and technology leakage. In this study, a research security level measurement model was developed that can safely protect the R&D environment conducted at the organizational level in order to prepare for the increasingly serious R&D result leakage accident. First, by analyzing and synthesizing security policies related to domestic and overseas R&D, 10 research security level evaluation items (Research Security Promotion System, Research Facility and Equipment Security, Electronic Information Security, Major Research Information Security Management, Research Note Security Management, Patent/Intellectual Property Security Management, Technology Commercialization Security Management, Internal Researcher Security Management, Authorized Third Party Researcher Security Management, External Researcher Security Management) were derived through expert interviews. Next, the research security level evaluation model was designed so that the derived research security level evaluation items can be applied to the organization's research and development environment from a multidimensional perspective. Finally, the validity of the model was verified, and the level of research security was evaluated by applying a pilot target to the organizations that actually conduct R&D. The research security level evaluation model developed in this study is expected to be useful for appropriately measuring the security level of organizations and projects that are actually conducting R&D. It is believed that it will be helpful in establishing a research security system and preparing security management measures. In addition, it is expected that stable and effective results of R&D investments can be achieved by safely carrying out R&D at the project level as well as improving the security of the organization performing R&D.

• The KIPS Transactions:PartC
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• v.9C no.5
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• pp.775-782
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• 2002

This paper introduces Policy Management Tool which was implemented based on Policy Information Model in network suity system. Network security system consists of policy terror managing and sending policies to keep a specific domain from attackers and policy clients detecting and responding intrusion by using policies that policy server sends. Policies exchanged between policy server and policy client are saved in database in the form of directory through LDAP by using Policy Management Tool based on network security policy information model. NSPIM is an extended policy information model of IETF's PCIM and PCIMe, which enables network administrator to describe network security policies. Policy Management Tool based on NSPIM provides not only policy management function but also editing function using reusable object, automatic generation function of object name and blocking policy, and other convenient functions to user.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.17 no.3
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• pp.525-532
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• 2013

Recently. smartphones have been popularized rapidly and now located deep in our daily life, providing a variety of services from banking, SNS (Social Network Service), and entertainment to smart-work mobile office through apps. Such smartphone apps can be easily downloaded from what is known as app store which, however, bears many security issues as software developers can just as easily upload to it. Military apps will be exposed to a myriad of security threats if distributed through internet-basis commercial app store. In order to mitigate such security concerns, this paper suggests a security guidelines for establishing a military-excusive app store and security verification system which prevent the security hazards that can occur during the process of development and distribution of military-use mobile apps.

• Journal of Convergence Society for SMB
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• v.5 no.2
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• pp.33-38
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• 2015

The damage to the security is increasing as public key-based ISP secure payment service is used in online banking payment system. Security technology aspect to ISP secure payment security has no special problems. But, security damage that occurs due to the simplicity of the payment system is a problem. In this paper, we propose response and plan for ISP secure payment service to minimize the damage that occurs due to the simplicity of a security settlement system. Proposed scheme is applicable to various billing systems such as secure payments, online payment, mobile payment, credit card. Proposed scheme is characterized in that can stably support the capabilities of the new billing system. Also, proposed scheme is to analyze the various security threats arising from the payment of the financial services and to describe response and plan technology.

• KSII Transactions on Internet and Information Systems (TIIS)
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• v.18 no.1
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• pp.170-191
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• 2024

The transmission of confidential data using cover media is called steganography. The three requirements of any effective steganography system are high embedding capacity, security, and imperceptibility. The text file's structure, which makes syntax and grammar more visually obvious than in other media, contributes to its poor imperceptibility. Text steganography is regarded as the most challenging carrier to hide secret data because of its insufficient redundant data compared to other digital objects. Unicode characters, especially non-printing or invisible, are employed for hiding data by mapping a specific amount of secret data bits in each character and inserting the character into cover text spaces. These characters are known with limited spaces to embed secret data. Current studies that used Unicode characters in text steganography focused on increasing the data hiding capacity with insufficient redundant data in a text file. A sequential embedding pattern is often selected and included in all available positions in the cover text. This embedding pattern negatively affects the text steganography system's imperceptibility and security. Thus, this study attempts to solve these limitations using the Part-of-speech (POS) tagging technique combined with the randomization concept in data hiding. Combining these two techniques allows inserting the Unicode characters in randomized patterns with specific positions in the cover text to increase data hiding capacity with minimum effects on imperceptibility and security. Format-preserving encryption (FPE) is also used to encrypt a secret message without changing its size before the embedding processes. By comparing the proposed technique to already existing ones, the results demonstrate that it fulfils the cover file's capacity, imperceptibility, and security requirements.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.29 no.5
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• pp.1179-1189
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• 2019

Cyber security evaluation is a series of processes that estimate the level of risk of assets and systems through asset analysis, threat analysis and vulnerability analysis and apply appropriate security measures. In order to prepare for increasing cyber attacks, systematic cyber security evaluation is required. Various indicators for measuring cyber security level such as CWSS and CVSS have been developed, but the quantitative method to apply appropriate security measures according to the risk priority through the standardized security evaluation result is insufficient. It is needed that an Scoring system taking into consideration the characteristics of the target assets, the applied environment, and the impact on the assets. In this paper, we propose a quantitative risk assessment model based on the analysis of existing cyber security scoring system and a method for quantification of assessment factors to apply to the established model. The level of qualitative attribute elements required for cyber security evaluation is expressed as a value through security requirement weight by AHP, threat influence, and vulnerability element applying probability. It is expected that the standardized cyber security evaluation system will be established by supplementing the limitations of the quantitative method of applying the statistical data through the proposed method.

• Journal of the Korea Society of Computer and Information
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• v.12 no.2 s.46
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• pp.333-339
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• 2007

Risk of damage on information system being grow according to increasing its dependence rate on most of organization. On this work, make planed for a safety assessment system in which information protection management system and threat analyzing method. Also, during threat assesment, we have planned possible an equal-weight applied assesment and considering the characteristics of the organization, an assesment which security factor's weight is variably applied to, and respective organizations to examine its security by itself in order to support the easy findings of the vulnerabilities on the management point of view, and to show the advices to practice.

• Proceedings of the Korean Information Science Society Conference
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• 2005.07a
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• pp.253-255
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• 2005

본 논문에서는 이동성이 많은 결재자의 업무를 효율적이고 신속하게 처리하기 위해 PDA, 핸드폰과 같은 모바일 장비상에서의 공인인증서를 이용한 결제처리 및 무선 인터넷상의 보안기능을 갖춘 시스템을 개발하였다. 모바일 인터넷의 보안 메커니즘은 정당한 사용자인지를 확인하는 인증, 데이터의 비밀 전송과 변조 여부 확인, 전자서명을 통한 거래 부인 방지 등이 이뤄진다. 이를 위해 RSA 공개키 알고리즘을 사용하여 문서 내용들에 대한 암호화/복호화를 수행하며 SHA-1 해시 알고리즘과 공인 인증서를 사용하여 결제처리를 한다. 일반 데스크 탑뿐만 아니라 모바일 장비간의 데이터 패킷 전송을 위해 XML 인코딩과 SOAP 프로토콜을 이용한다.

• Proceedings of the Korean Information Science Society Conference
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• 2007.06d
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• pp.63-66
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• 2007

인터넷 상에서 음성데이터를 전달하는 VoIP는 기존의 PSTN망을 대체하는 수단으로 환영받고 있다. 음성데이터를 인터넷 프로토콜 데이터 패킷으로 변환하여 데이터가 일반 IP망에서 전달이 가능하게 해주어 기존 일반 전화망에 비해 요금이 저렴하고 확장성이 뛰어난 특징을 가지고 있다. 이러한 VoIP서비스가 점차 증가함에 따라 보안의 취약점 및 서비스의 질이 저하되는 문제가 발생하고 있다. 이러한 점을 줄이기 위해 본 논문은 기존의 VoIP에 AA(Attribute Authority) Server를 추가하여서 보안성 및 사용자 접근에 차등을 줄 수 있는 인증 시스템을 설계하였다.

• Annual Conference of KIPS
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• 2003.05c
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• pp.2121-2124
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• 2003

정보보호시스템의 국제공통평가기준인 CC(또는 ISO/IEC 1540B)에서는 평가용 문서(즉, 제출물)에 대한 세부지침을 포함하지 않고 있으므로, CC기반 평가체계를 구축하기 위해서는 문서 스키마(즉, 목차와 내용요구사항)를 개발해야 한다. 본 논문에서는 CC기반 평가체계에서 활용할 수 있는 문서 스키마를 개발하였다. CC내의 보증클래스로부터 Weakest precondition함수, 문서량 축소규칙, 문서 종속성 분석방법을 적용하여 문서스키마와 DTD를 개발하였다. 본 연구의 접근방법은 소프트웨어 품질의 평가체계에서 사용할 문서스키마 또는 DTD를 개발하는데 응용될 수 있다.