• Journal of Communications and Networks
• /
• 제11권6호
• /
• pp.634-644
• /
• 2009

A diversity of wireless networks, with rapidly evolving wireless technology, are currently in service. Due to their innate physical layer vulnerability, wireless networks require enhanced security components. WLAN, WiBro, and UMTS have defined proper security components that meet standard security requirements. Extensive research has been conducted to enhance the security of individual wireless platforms, and we now have meaningful results at hand. However, with the advent of ubiquitous service, new horizontal platform service models with vertical crosslayer security are expected to be proposed. Research on synchronized security service and interoperability in a heterogeneous environment must be conducted. In heterogeneous environments, to design the balanced security components, quantitative evaluation model of security policy in wireless networks is required. To design appropriate evaluation method of security policies in heterogeneous wireless networks, we formalize the security properties in wireless networks. As the benefit of security protocols is indicated by the quality of protection (QoP), we improve the QoP model and evaluate hybrid security policy in heterogeneous wireless networks by applying to the QoP model. Deriving relative indicators from the positive impact of security points, and using these indicators to quantify a total reward function, this paper will help to assure the appropriate benchmark for combined security components in wireless networks.

• International Journal of Computer Science & Network Security
• /
• 제23권10호
• /
• pp.107-114
• /
• 2023

The study provides the identification of vulnerabilities in the security issues by Wireless Network. To achieve it the research focus on packet flow analysis, end to end data communication, and the security challenges (Cybercrime, insider threat, attackers, hactivist, malware and Ransomware). To solve this I have used the systematic literature review mechanisms and demonstrative tool namely Wireshark network analyzer. The practical demonstration identifies the packet flow, packet length time, data flow statistics, end- to- end packet flow, reached and lost packets in the network and input/output packet statics graphs. Then, I have developed the proposed model that used to secure the Wireless network solution and prevention vulnerabilities of the network security challenges. And applying the model that used to investigate the security challenges and vulnerabilities of cloud computing services is used to fulfill the network security goals in Wireless network. Finally the research provides the model that investigate the security challenges and vulnerabilities of cloud computing services in wireless networks

• 한국인터넷방송통신학회논문지
• /
• 제8권3호
• /
• pp.57-70
• /
• 2008

This paper introduces a new paradigm of physical layer security through channel coding for wireless networks. The well known spread spectrum based physical layer security in wireless network is applicable when code division multiple access (CDMA) is used as wireless air link interface. In our proposal, we incorporate the proposed security protocol within channel coding as channel coding is an essential part of all kind of wireless communications. Channel coding has a built-in security in the sense of encoding and decoding algorithm. Decoding of a particular codeword is possible only when the encoding procedure is exactly known. This point is the key of our proposed security protocol. The common parameter that required for both encoder and decoder is generally a generator matrix. We proposed a random selection of generators according to a security key to ensure the secrecy of the networks against unauthorized access. Therefore, the conventional channel coding technique is used as a security controller of the network along with its error correcting purpose.

• 정보보호학회논문지
• /
• 제18권6B호
• /
• pp.233-248
• /
• 2008

Advances in electronics and wireless communication technologies have enabled the development of large-scale wireless sensor networks (WSNs). There are numerous applications for wireless sensor networks, and security is vital for many of them. However, WSNs suffer from many constraints, including low computation capability, small memory, limited energy resources, susceptibility to physical capture, and the lack of infrastructure, all of which impose unique security challenges and make innovative approaches desirable. In this paper, we present a survey on security issues in wireless sensor networks. We address several network models for security protocols in WSNs, and explore the state of the art in research on the key distribution and management schemes, typical attacks and corresponding countermeasures, entity and message authentication protocols, security data aggregation, and privacy. In addition, we discuss some directions of future work.

• 정보보호학회논문지
• /
• 제29권5호
• /
• pp.1063-1075
• /
• 2019

최근 산업에서는 산업 자동화를 구축하여 효율적인 시스템 관리를 위해 WISN(Wireless Industrial Sensor Network)를 도입하고 있다. 무선센서를 도입하는 WISN는 도입하여 많은 엔지니어링 비용을 절감하고 공정 프로세서의 최적화를 이루어내면서 무선으로의 통신의 사용이 증가하고 있다. 산업용 무선 센서 네트워크에 대한 실증 연구는 활발하게 진행되고 있지만, 이에 대한 보안 연구는 적으며 그만큼 위협에 노출되어 있다. 뿐만 아니라 무선 통신프로토콜의 표준 자체의 문제점이 있을 경우 표준에 따라 인증된 기기 또한 문제점을 포함한 보안 위협이 따를 수 있다. 각 프로토콜의 표준에서는 보안키를 분배하기 위한 절차가 제시되어 있지 않거나 혹은 기기가 네트워크에 진입할 때 Global Data Link 키를 사용하여 보안에 취약한 문제점이 있었다. 본 논문에서는 표준에 기반하여 ISA 100.11a와 WirelessHART 프로토콜 스택에 따른 보안 기능과 위협에 대해 분석 표준 자체의 문제점을 제시하고 그에 따른 보안 요구 사항에 대해 제시한다.

• 한국정보통신학회:학술대회논문집
• /
• 한국해양정보통신학회 2003년도 춘계종합학술대회
• /
• pp.729-732
• /
• 2003

무선 통신망의 데이터를 보호하기 위한 암호화의 방법 및 비밀 통신을 위한 인중 메카니즘에 대한 방법을 제안하였다. 무선 통신망의 경우 기존의 유선망에 비해, 설치, 이동성 등이 우수하여 많은 기술적인 발전을 보이고 있다. 따라서 이에 대한 데이터의 보호에 대한 관심이 고조되고 있다. 본 논문에서는 가정, 사무실, 건물과 같은 전형적인 외부 환경에 대해 정보를 보호할 수 있는 시스템의 구조를 설계하여 제안하였다.

• International Journal of Computer Science & Network Security
• /
• 제21권3호
• /
• pp.48-54
• /
• 2021

Security is an important issue for wireless communications and poses many challenges. Most security schemes have been applied to the upper layers of communications networks. Since in a typical wireless communication, transmission of data is over the air, third party receiver(s) may have easy access to the transmitted data. This work examines a new security technique at the physical layer for the sake of enhancing the protection of wireless communications against eavesdroppers. We examine the issue of secret communication through Rayleigh fading channel in the presence of an eavesdropper in which the transmitter knows the channel state information of both the main and eavesdropper channel. Then, we analyze the capacity of the main channel and eavesdropper channel we also analyze for the symbol error rate of the main channel, and the outage probability is obtained for the main transmission. This work elucidate that the proposed security technique can safely complement other Security approaches implemented in the upper layers of the communication network. Lastly, we implement the results in Mat lab

• KSII Transactions on Internet and Information Systems (TIIS)
• /
• 제3권6호
• /
• pp.597-611
• /
• 2009

With the advent of ubiquitous computing society, many advanced technologies have enabled wireless sensor networks which consist of small sensor nodes. However, the sensor nodes have limited computing resources such as small size memory, low battery life, short transmission range, and low computational capabilities. Thus, decreasing energy consumption is one of the most significant issues in wireless sensor networks. In addition, numerous applications for wireless sensor networks are recently spreading to various fields (health-care, surveillance, location tracking, unmanned monitoring, nuclear reactor control, crop harvesting control, u-city, building automation etc.). For many of them, supporting security functionalities is an indispensable feature. Especially in case wireless sensor networks should provide a sufficient variety of security functions, sensor nodes are required to have more powerful performance and more energy demanding features. In other words, simultaneously providing security features and saving energy faces a trade-off problem. This paper presents a novel energy-efficient security architecture in an IEEE 802.15.4-based wireless sensor network called the Hybrid Adaptive Security (HAS) framework in order to resolve the trade off issue between security and energy. Moreover, we present a performance analysis based on the experimental results and a real implementation model in order to verify the proposed approach.

• 한국정보통신학회논문지
• /
• 제17권6호
• /
• pp.1348-1353
• /
• 2013

다음은 요약문 입니다. 여러 종류의 무선 통신망들에 대한 통합화된 서비스에 대한 수요가 요구되고 있다. 이러한 요구는 기존의 유선망과 무선 통신망의 통합 배치를 통하여 가능하게 되었다. 각각의 무선 통신망들은 기존이 망들에 비해 고유의 특징을 가지고 있다. 개방형 무선 통심 환경 하에서의 주요한 문제 중의 하나가 보안성에 관련된 문제이다. 개방형 환경 하에서 통합된 환경의 보안성을 실현하기 위해서는 현실에서 실제적으로 적용 가능한 통합 보안 구조를 개발하여야 한다. 따라서 본 논문에서는 이러한 요구조건을 만족하기 위해서 고려해야 하는 사항들을 분석하였다.

• 한국정보통신학회:학술대회논문집
• /
• 한국정보통신학회 2013년도 춘계학술대회
• /
• pp.288-289
• /
• 2013

An integrated security mechanism is one of the key challenges in the open wireless network architecture because of the diversity of the wireless network in open wireless network and the unique security mechanism used in each one of these networks. Optimized security protocols and mechanisms are employed for the high performance and security. Finally, a challenge in the near future will converge the integration of Open Ubiquitous Sensor Network (OUSN) with security protocols for applying the their applications. We analysed unique network-centric features and security mechanism of various heterogeneous wireless networks.