• Proceedings of the Korea Information Processing Society Conference
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• 한국정보처리학회 2005년도 춘계학술발표대회
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• pp.1139-1142
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• 2005

자원의 제한을 가지는 센서로 구성된 무선 센서 네트워크에 적용하기 위하여 in-networking 프로세싱과 에너지 효율성을 제공하는 다양한 방식의 라우팅 프로토콜들이 제안되고 있다. 반면, 무선 센서 네트워크를 대상으로 하는 다양한 공격 형태들 또한 등장하고 있다. 무선 센서 네트워크상에서의 라우팅 프로토콜은 기존의 라우팅 방식과 달리 in-networking 프로세싱을 제공하기 때문에 라우팅 프로토콜에 대한 안전성 평가는 매우 중요하다. 본 논문에서는 현재 무선 센서 네트워크상에서 제안된 라우팅 프로토콜과 공격에 대하여 살펴보고 각각의 공격에 대한 각 라우팅 프로토콜의 안전성을 평가한다. 이는 무선 센서 네트워크를 위한 새로운 라우팅 프로토콜 제안 시 보안 취약점을 효과적으로 해결할 수 있는 방향을 제시 할 수 있다.

• Journal of IKEEE
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• 제11권4호
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• pp.205-212
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• 2007

The ubiquitous sensor network consists of micro sensors with wireless communication capabilities. Compared to wired communication, wireless communication is more subject to eavesdropping as well as data variation and manipulation. Accordingly, there must be efforts to secure the information delivered over the sensor network. Providing security to the sensor network, however, requires additional energy consumption, which is an important issue since energy transformation is difficult to implement in a sensor network. This paper proposes a routing mechanism based on the energy-efficient cluster that features security functions capable of safely processing the data acquired from the sensor network. The proposed algorithm reduces energy consumption by fixing the clusters formed at the initial stage and using the pre-distribution scheme so that the cluster and node keys generated and exchanged at the initial stage are not re-generated or re-exchanged. Simulation experiments confirmed that the proposed approach reduces energy consumption compared to implementing security measures to the conventional cluster-based routing mechanism.

• Proceedings of the Korean Society of Computer Information Conference
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• 한국컴퓨터정보학회 2015년도 제51차 동계학술대회논문집 23권1호
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• pp.77-80
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• 2015

무선통신을 기반으로 하는 WSN은 통신의 특성상 네트워크보안에 취약점을 가진다. 무선통신의 취약점은 누구나 네트워크에 접근이 가능하다는 것이다. 이에 따라 침입에 강인한 무선 센서 네트워크인 INtrusion-tolerant routing protocol for wireless SEnsor NetworkS(INSENS)가 제안됨으로써 WSN의 초기 라우팅 설정 시 침입하는 공격자를 사전에 차단할 수 있게 되었다. 그러나 라우팅 설정 후에 노드가 공격자에 의해 훼손당하게 된다면, 노드의 주요정보를 이용해 공격자는 또다시 라우팅 공격이 가능해진다. 본 논문에서는 공격자에 의해 훼손된 노드가 라우팅 공격 중 대표적인 공격인 싱크홀 공격 메시지를 방송하였을 때, 페어와이즈 키를 통해 효과적으로 공격메시지를 차단하는 양방향인증기법을 제안한다. 이로써 INSENS에서 발생하는 싱크홀 공격을 차단함으로써 WSN의 보안 강화에 기여한다.

• Journal of Digital Convergence
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• 제14권10호
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• pp.287-293
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• 2016

Wireless sensor networks (WSNs) have many applications and are deployed in a wide variety of areas. They are often deployed in potentially adverse or even hostile environment so that there are concerns on security issues in these WSNs. Recently, an anonymous user authentication and key agreement scheme (AUAKAS) was proposed based on symmetric cryptosystem in WSNs. It is claimed in AUAKAS that it assures security against different types of attacks including impersonation attacks. However, this paper shows that AUAKAS does not cope from user impersonation attack and gateway impersonation attack from the legally registered user on the gateway. The security analysis could guide the required features of the security scheme to be satisfied.

• Convergence Security Journal
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• 제9권2호
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• pp.71-78
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• 2009

It is very difficult to apply previous security protocols to WSNs(Wireless Sensor Networks) directly because WNSs have resource constrained characteristics such as a low computing ability, power, and a low communication band width. In order to overcome the problem, we proposes a secure group communication scheme applicable to WSNs. The proposed scheme is a combined form of the TEEN(Threshold sensitive Energy Efficient sensor Network protocol) clustering based hierarchical routing protocol and security mechanism, and we assume that WSNs are composed of sensor nodes, cluster headers, and base stations. We use both private key and public key cryptographic algorithms to achieve an enhanced security and an efficient key management. In addition, communications among sensor nodes, cluster headers, and base stations are accomplished by a hierarchical tree architecture to reduce power consumption. Therefore, the proposed scheme in this paper is well suited for WSNs since our design can provide not only a more enhanced security but also a lower power consumption in communications.

• Proceedings of the Korea Institutes of Information Security and Cryptology Conference
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• 한국정보보호학회 2006년도 하계학술대회
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• pp.441-446
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• 2006

센서 네트워크 활용의 현실성을 높이기 위해서는 센서 네트워크 보안에 대한 연구는 필수적이다. 현재 진행 중인 센서 네트워크 보안에 대한 연구는 노드 인증, 데이터 기밀성 무결성 제공에 초점이 맞춰지고 있다. 그러나 가용성에 대한 부분은 상대적으로 부족하다. 특히, 센서 네트워크의 구성요소인 센서 노드에 대한 침해는 네트워크전체의 가용성을 저하시킬 수 있으므로 이에 대한 연구는 더욱 필요하다. 본 논문에서는 센서 노드의 보안을 위해서 Task-Role Based Access Control을 통한 접근제어 방법론을 제안한다.

• Convergence Security Journal
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• 제15권4호
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• pp.35-41
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• 2015

Internet of Things has a wide range of vulnerabilities are exposed to information security threats. However, this does not deal with the basic solution, the vaccine does not secure encryption for the data transmission. The encryption and authentication message transmitted from one node to the construction of the secure wireless sensor networks is required. In order to satisfy the constraint, and security requirements of the sensor network, lightweight encryption and authentication technologies, the light key management technology for the sensor environment it is required. Mandatory sensor network security technology, privacy protection technology subchannel attack prevention, and technology. In order to establish a secure wireless sensor networks encrypt messages sent between the nodes and it is important to authenticate. Lightweight it shall apply the intrusion detection mechanism functions to securely detect the presence of the node on the network. From the sensor node is not involved will determine the authenticity of the terminal authentication technologies, there is a need for a system. Network security technology in an Internet environment objects is a technique for enhancing the security of communication channel between the devices and the sensor to be the center.

• Convergence Security Journal
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• 제12권3호
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• pp.67-73
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• 2012

In this paper, in order to overcome the disadvantage of wireless-based sensor network, a hybrid sensor network using wired and wireless linkage is proposed. Proposed a wired and wireless linkage hybrid sensor network can compensate the defect of poor transmission at the indoor wireless environment, and can be free from interference between a wireless LAN and Bluetooth of the same frequency bandwidth due to an attribute of low-loss transmission at the CATV network. Also, proposed a wired and wireless linkage hybrid sensor network make use of CATV network which is well-built infrastructure, is more efficient to design network, assure a stability and high reliability of the sensor network as providing a stability for an inaccuracy and a predictable transmission link for the existing wireless network.

• Journal of Digital Convergence
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• 제11권12호
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• pp.367-380
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• 2013

A secure data gathering in a Wireless Sensor Network(WSN) has given attention to one of security issues. In general, the process of secure data gathering causes difficulties: one process is exchanging the secured data and the other is constructing secured data path. The previous studies have been resolving the difficulties in terms of two problems: security and data gathering in WSNs. However, a WSN requires a protocol that has to guarantee a security of path between sensors and sink, or a cluster head. Thus how to gather data securely is an important issue. In this paper, we propose a secure data gathering protocol over WSNs, which consists of hierarchical key settlement and secure path construction, and aims at tackling two problems. The proposed protocol causes little overhead to sensor nodes for secured key settlement and path construction. This work provides security analysis focused on the key settlement protocol and evaluates network performance for the proposed data gathering protocol through simulation.

• The Journal of the Korea Contents Association
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• 제12권1호
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• pp.48-58
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• 2012

With the development of sensing devices and wireless communication technologies, wireless sensor networks are composed of a large number of sensor nodes that are equipped with limited computing performance and restricted communication capabilities. Besides, the sensor nodes are deployed in hostile or unattended environments. Therefore, the wireless sensor networks are vulnerable to security. In particular, the fatal damage may be occurred when data are exposed in real world applications. Therefore, it is important for design requirements to be made so that wireless sensor networks provide the strong security. However, because the conventional security schemes in wired networks did not consider the limited performance of the sensor node, they are so hard to be applied to wireless sensor networks. In this paper, we propose a secure multipath transmission scheme based on one-way hash functions in wireless sensor networks considering the limited performance of the wireless sensor nodes. The proposed scheme converts a sensor reading based on one of one-way hash functions MD5 in order to make it harder to be cracked and snooped. And then, our scheme splits the converted data and transfers the split data to the base station using multi-path routing. The experimental results show that our proposed scheme consumes the energy of just about 6% over the existing security scheme.