• 한국컴퓨터정보학회논문지
• /
• 제23권12호
• /
• pp.81-87
• /
• 2018

Cloud computing is a computing environment in which users borrow as many IT resources as they need to, and use them over the network at any point in time. This is the concept of leasing and using as many IT resources as needed to lower IT resource usage costs and increase efficiency. Recently, cloud computing is emerging to provide stable service and volume of data along with major technological developments such as the Internet of Things, artificial intelligence and big data. However, for a more secure cloud environment, the importance of perimeter security such as shared resources and resulting secure data storage and access control is growing. This paper analyzes security threats in cloud computing environments and proposes a security architecture for effective response.

• KSII Transactions on Internet and Information Systems (TIIS)
• /
• 제7권5호
• /
• pp.1291-1312
• /
• 2013

Cloud computing changes the service models of information systems and accelerates the pace of technological innovation of consumer electronics. However, it also brings new security issues. As one of the important foundations of various cloud security solutions, entity authentication is attracting increasing interest of many researchers. This article proposes a layered security architecture to provide a trust transmission mechanism among cloud systems maintained by different organizations. Based on the security architecture, four protocols are proposed to implement mutual authentication, data sharing and secure data transmission in federated cloud systems. The protocols not only can ensure the confidentiality of the data transferred, but also resist man-in-the-middle attacks and masquerading attacks. Additionally, the security properties of the four protocols have been proved by S-pi calculus formal verification. Finally, the performance of the protocols is investigated in a lab environment and the feasibility of the security architecture has been verified under a hybrid cloud system.

• 시큐리티연구
• /
• 제8호
• /
• pp.361-377
• /
• 2004

This study is to examine the relations between the big five critical crime that consist of homicide, robbery, rape, theft, violence and the private security services. To achieve this objective, this research selected the subject of study, specially, 2002 status of the private security such as the number of companies and employees classified by areas along with the big five crime mentioned above classified by area. The research data is secondary data that is from '2003 Crime Analysis' of the Supreme Public Prosecutors' Office and 'The private Security Related Data' of the National Police Agency. The selected data were analyzed according to the variables by using SPSS 10.0 statistics software program. Each hypothesis was verified around the level of significance ${\alpha}$=.05 by using the statistical techniques, such as Descriptive Statistics, Correlation, Regression, etc. The following was the result of the study, First, the total number of the big five crime affects the number of the companies at significant level. Second, the number of the security companies can be explained by the each total number of the big five crime in the order of theft, robbery, violence, rape and murder. Third, the total number of the big five crime affects the number of the security employees at significant level. Forth the number of the security employees can be explained by the each total number of the big five crime in the order of theft, robbery, violence, rape and murder.

• 한국통신학회논문지
• /
• 제17권10호
• /
• pp.1164-1174
• /
• 1992

본 논문에서는 LLC/MAC 계층 구조에서의 정보 보호 프로토콜에 대하여 기술하였다. 근거리 통신망에서의 정보 보호 위협과 취약성, 이의 해결을 위한 요구 서비스, 그리고 IEEE 802 근거리 통신망 구조에서의 정보 보호 프로토콜의 적용 대한을 기술하였다. 정보 보호 서비스를 제공하기 위해 LLC/MAC 서비스 프리미티브를 이용한 정보 보호 프로토콜 (SP2 : Security Protocol 2) PDU 구성을 제안하였으며, SP2 프로토콜을 구성하기 위하여 DES 알고리즘의 ECB, CBC 모드와 FIPS의 DAA를 이용하였다. 제안된 SP2프로토콜은 데이타 발신처 인증, 데이타 비밀유지, 데이타 무결성 서비스를 제공한다.

• 정보보호학회논문지
• /
• 제24권6호
• /
• pp.1293-1308
• /
• 2014

2014년 카드사 개인정보유출 사고의 원인은 테스트시스템에서 원본 데이터가 사용되었기 때문이다. 금융감독원 전자금융감독규정과 금융회사 정보기술(IT)부문의 정보보호업무 모범규준에는 테스트시스템에서 고객을 식별하는 정보는 변환하여 사용하도록 규정하고 있다. 금융회사는 이 지침에 따라 고객식별정보를 변환한 데이터를 테스트시스템에 적재하여 사용한다. 하지만, 테스트 과정에서의 사용자 실수 또는 기술적, 관리적 보안의 미비 등으로 의도치 않게 실제 개인식별정보가 유입될 수 있으나, 이를 통제 및 관리하는 프로세스는 현재 연구된 바가 없고, 감독기관의 컴플라이언스 위반 가능성을 높이는 원인이 되고 있다. 본 논문에서는 이러한 테스트시스템의 변환 미확인 고객식별정보를 관리 및 통제함으로써 감독기관의 컴플라이언스 위반 가능성을 없애는 프로세스를 제시 및 실증하고, 그 효과성을 확인해 본다.

• 디지털산업정보학회논문지
• /
• 제5권4호
• /
• pp.51-59
• /
• 2009

Many failures are due to incorrectly programmed transactions and data entry errors. System failure causes the loss or corruption of the contents of volatile storage. Although global processing protects data values to detect direct or indirect information effluence, security environments are very important in the recovery management of heterogeneous systems. Although transaction can't control system fault, the restart for the system can cause information effluence by low bandwith. From various faults, it is not easy to maintain the consistency and security of data. This paper proposes recovery management protocols to assure global multilevel secure one-copy quasi-serializability in security environments of heterogeneous systems with replicated data and proves its correctness. The proposed secure protocols guarantee the reliability and security of system when the system fault is happened.

• Journal of information and communication convergence engineering
• /
• 제10권3호
• /
• pp.248-252
• /
• 2012

The sensor network standard DASH7 was proposed to improve transmission quality and low power communication. Specifications for the standard are currently being developed, so the security specification has not been firmly implemented. However, without a security specification, a network cannot work due to threats from malicious users. Thus we must ensure confidentiality and authentication of data packets by using a cryptography method. To contribute to the DASH7 security specification, this paper shows the implementation results of network and data link layer security by using advanced encryption standard (AES) counter with CBC-MAC (CCM) over CC430 sensor nodes.

• International Journal of Computer Science & Network Security
• /
• 제23권5호
• /
• pp.65-72
• /
• 2023

Cloud Computing is one of the current research areas in computer science. Recently, Cloud is the buzz word used everywhere in IT industries; It introduced the notion of 'pay as you use' and revolutionized developments in IT. The rapid growth of modernized cloud computing leads to 24×7 accessing of e-resources from anywhere at any time. It offers storage as a service where users' data can be stored on a cloud which is managed by a third party who is called Cloud Service Provider (CSP). Since users' data are managed by a third party, it must be encrypted ensuring confidentiality and privacy of the data. There are different types of cryptographic algorithms used for cloud security; in this article, the algorithms and their security measures are discussed.

• 한국정보과학회논문지:정보통신
• /
• 제29권6호
• /
• pp.635-644
• /
• 2002

본 논문은 웹 시스템 환경에서 안전한 데이타 전송을 만족하는 Protocol-Based Security Module(PBSM) 구조를 제안한다. PBSM 구조는 크게 두개의 모듈로 구성된다. 하나는 웹 서버에서 동작하는 Web Server Sorority Module(WSSM)이고, 다른 하나는 클라이언트에서 동작하는 Winsock Client Security Module(WSCSM)이다. WSCSM 보안 모듈은 WSSM으로부터 받은 암호된 메시지를 정상적인 메시지로 변환하여 웹 브라우저에 나타나게 한다. WSSM 보안 모듈은 HTML 파일에 대한 암호화(Encryption)기능과 WSCSM 모듈로부터 받은 Common Gateway Interface(CGI) 데이타에 대한 복호화 기능을 가지고 있다. PBSM 보안 시스템의 보안 정확성을 검증하기 위하여 정형화 분석 기법을 이용했다.

• 융합보안논문지
• /
• 제20권3호
• /
• pp.109-114
• /
• 2020

지식정보사회 기반의 기술혁신은 현재 4차 산업혁명((4IR, Fourth Industrial Revolution)로 접어들면서 기존의 3차 산업혁명의 디지털 기술혁신을 기반으로 데이터의 적극적인 활용을 통한 융·복합적 인프라가 구축되면서 다양한 분야에서 새로운 비즈니스 모델을 창출하기 위한 혁신적 노력이 요구되고 있다. 이에 따른 보안영역도 3차 산업혁명과는 구별되어지는 핵심기술인 방대한 양의 비정형 데이터를 수집·분석·가공하여 얻어진 정형화된 데이터를 바탕으로 좀 더 정확하게 예측하여 효율적으로 활용할 수 있는 가상물리보안시스템(CPSS, Cyber-Physical Security System)을 제안하여 Electronic Security 프레임워크를 제시하고자 한다.