• International Journal of Computer Science & Network Security
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• 제23권8호
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• pp.159-167
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• 2023

Objective: • To detect black hole and warm hole attacks in wireless sensor networks. • To give a solution for energy depletion and security breach in wireless sensor networks. • To address the security problem using strategic decision support system. Methods: The proposed stackelberg game is used to make the spirited relations between multi leaders and multi followers. In this game, all cluster heads are acts as leaders, whereas agent nodes are acts as followers. The game is initially modeled as Quadratic Programming and also use backtracking search optimization algorithm for getting threshold value to determine the optimal strategies of both defender and attacker. Findings: To find optimal payoffs of multi leaders and multi followers are based on their utility functions. The attacks are easily detected based on some defined rules and optimum results of the game. Finally, the simulations are executed in matlab and the impacts of detection of black hole and warm hole attacks are also presented in this paper. Novelty: The novelty of this study is to considering the stackelberg game with backtracking search optimization algorithm (BSOA). BSOA is based on iterative process which tries to minimize the objective function. Thus we obtain the better optimization results than the earlier approaches.

• 한국정보과학회:학술대회논문집
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• 한국정보과학회 2007년도 가을 학술발표논문집 Vol.34 No.2 (D)
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• pp.556-559
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• 2007

Due to its ease of deployment, low cost, self-configuring and self-healing capabilities, Wireless Mesh Networks (WMNs) have emerged as a key technology to be used in a wide scale applications in personal, local, campus, and metropolitan areas. Security and more specifically privacy is an important issue in this type of multi-hop WMN which has given a little attention in the research community. We focus on privacy compromise of a mesh client in a community mesh network that may lead an attacker to reveal mesh clients identity. his other profiles and gain information about mobility. In this paper. we have presented an authentication mechanism with the aid of blind signature that ensures a mesh client to anonymously authenticate itself with a nearby mesh router and thereby preserve identity privacy We have also presented the security and performance analysis of the proposed scheme.

• Journal of Information Processing Systems
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• 제8권1호
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• pp.145-158
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• 2012

Hyperelliptic Curve Cryptosystem (HECC) is well suited for all kinds of embedded processor architectures, where resources such as storage, time, or power are constrained due to short operand sizes. We can construct genus 3 HECC on 54-bit finite fields in order to achieve the same security level as 160-bit ECC or 1024-bit RSA due to the algebraic structure of Hyperelliptic Curve. This paper explores various possible attacks to the discrete logarithm in the Jacobian of a Hyperelliptic Curve (HEC) and addition and doubling of the divisor using explicit formula to speed up the scalar multiplication. Our aim is to develop a cryptosystem that can sign and authenticate documents and encrypt / decrypt messages efficiently for constrained devices in wireless networks. The performance of our proposed cryptosystem is comparable with that of ECC and the security analysis shows that it can resist the major attacks in wireless networks.

• 한국멀티미디어학회논문지
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• 제11권12호
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• pp.1722-1729
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• 2008

This paper describes the contents about the efficient routing technique for improvement of transmission in Wireless Sensor Networks. Existing flat-based routing protocols have several problems like data overlap and implosion. Gossiping Algorithm in WSN is able to reduce the overhead and transmit packets through already set up the path but it takes place the data delivery and problem of worst-case. In this paper, we try to solve two problems that are data delivery and worst-case by selecting neighbor nodes using RSSI and number of linkage. The proposed model is available to real-mote and we confirmed the improvement of the performance against existing models.

• International Journal of Computer Science & Network Security
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• 제22권4호
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• pp.139-146
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• 2022

Wireless access technologies are emerging to enable high data rates for mobile users and novel applications that encompass both human and machine-type interactions. An essential approach to meet the rising demands on network capacity and offer high coverage for wireless users on upcoming fifth generation (5G) networks is heterogeneous networks (HetNets), which are generated by combining the installation of macro cells with a large number of densely distributed small cells Deployment in 5G architecture has several issues because to the rising complexity of network topology in 5G HetNets with many distinct base station types. Aside from the numerous benefits that dense small cell deployment delivers, it also introduces key mobility management issues such as frequent handover (HO), failures, delays and pingpong HO. This article investigates 5G HetNet mobility management in terms of radio resource control. This article also discusses the key challenges for 5G mobility management.

• International Journal of Computer Science & Network Security
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• 제24권4호
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• pp.119-126
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• 2024

This paper reviewed and provides clarifications as to the meaning and concept of Smart Cities with particular reference to the Smart City Components. The paper also discusses Internet of Things and the Big Data in relation to the role they played in the development and evolution of smart cities. The paper further provides discussions on the 5G Wireless Networks and Industry 4.0 buttressing their significance in the smart cities concept. The paper as the name implies; discusses on the readiness and adaptability of this trending concept 'Smart City' in the African global space.

• International Journal of Computer Science & Network Security
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• 제21권5호
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• pp.168-174
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• 2021

The Cognitive radio (CR) is evolving technology for managing the spectrum bandwidth in wireless network. The security plays a vital role in wireless network where the secondary users are trying to access the primary user's bandwidth. During the allocation the any malicious user either he pretends to be primary user or secondary user to access the vital information's such as credentials, hacking the key, network jam, user overlapping etc. This research paper discusses on various types of attack and to prevent the attack in cognitive radio network. In this research, secondary users are identified by the primary user to access the primary network by the secondary users. The secondary users are given authorization to access the primary network. If any secondary user fails to provide the authorization, then that user will be treated as the malicious user. In this paper two approaches are suggested one by applying elliptic curve cryptography and the other method by using priority-based service access.

• 정보보호학회논문지
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• 제29권1호
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• pp.29-43
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• 2019

최근, IoT 무선 디바이스 등의 증가로 WSN(Wireless Sensor Network) 환경에서 네트워크 트래픽이 증가하면서 네트워크 자원을 안전하고 효율적으로 관리하는 SDN(Software-Defined Networking)을 WSN에 적용한 SDWSN(Software-Defined Wireless Sensor Networking)과 그에 대한 보안 기술에 대한 관심도가 증가하고 있다. 본 논문에서는 SDWSN 환경에서 PUF(Physical Unclonable Function) 기반 그룹 키 분배 방법을 안전하고 효율적으로 설계하는 방법을 서술한다. 최근에 Huang 등은 그룹 키 분배에 SDN의 장점과 PUF의 물리적 보안 기능을 이용하여 그룹 키 분배 방법을 설계하였다. 하지만, 본 논문에서는 Huang 등의 프로토콜이 보조 제어부 미인증과 불필요한 동기화 정보를 유지하는 취약점이 존재함을 발견하였다. 본 논문에서는 보조 제어부에 인증과정을 안전하게 설계하고, 불필요한 동기화 정보는 삭제하되 카운터 스트링과 랜덤 정보를 추가하여 Huang의 취약점을 개선하였다.

• 한국통신학회논문지
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• 제32권7A호
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• pp.717-723
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• 2007

센서 네트워크는 무선 채널의 근본적인 보안상의 취약점 이외에도 센서 노드 자체의 하드웨어적인 제약 사항을 가진다. 따라서 보안성을 보장해 주기 위해 기존의 무선통신 네트워크와는 다른 접근이 필요하다. 즉 인증 방법의 경량화를 통해서 저 사양의 센서 노드에서 동작 가능하고 보안체계 작동 시에 네트워크의 성능을 유지 할 수 있도록 해야 한다. 본 논문에서는 이러한 센서 네트워크가 가지는 특징들을 고려하여 네트워크 성능과 보안성 사이에서의 절충점을 만족시킬 수 있는 데이터 origin인증 방법에 대해 논의하였다. 이것은 각 센서 노드들이 클러스터 헤드와 스타 토폴로지 형태로 연결된 센서 네트워크에서 메시지에 특수한 인증코드의 첨부로 네트워크 성능은 유지하면서 주고받는 메시지의 origin인증을 가능하게 하는 challenge-response 방식의 인증방법이다. 이때 사용되는 특수한 코드는 질의코드와 응답코드의 순서쌍이 오직 하나만 존재하는 특징을 가진 유일순차코드로서, 본 논문에서는 이를 생성하는 방법과 생성된 코드의 인증 적용 방법에 대해서 설명하고 공격에 대한 안전성에 대해서 논의한다.

• 한국통신학회논문지
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• 제32권5A호
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• pp.402-408
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• 2007

센서 네트워크는 무선 채널의 근본적인 보안상의 취약점 이외에도 센서 노드 자체의 하드웨어적인 제약 사항을 가진다. 따라서 보안성을 보장해 주기 위해 기존의 무선통신 네트워크와는 다른 접근이 필요하다. 즉 인증 방법의 경량화를 통해서 저 사양의 센서 노드에서 동작 가능하고 보안체계 작동 시에 네트워크의 성능을 유지 할 수 있도록 해야 한다. 본 논문에서는 이러한 센서 네트워크가 가지는 특징들을 고려하여 네트워크 성능과 보안성 사이에서의 절충점을 만족시킬 수 있는 데이터 origin인증 방법에 대해 논의하였다. 이것은 각 센서 노드들이 클러스터 헤드와 스타 토폴로지 형태로 연결된 센서 네트워크에서 메시지에 특수한 인증코드의 첨부로 네트워크 성능은 유지하면서 주고받는 메시지의 origin인증을 가능하게 하는 challenge-response 방식의 인증방식이다. 이때 사용되는 특수한 코드는 질의코드와 응답코드의 순서쌍이 오직 하나만 존재하는 특징을 가진 유일순차코드로서, 본 논문에서는 이를 생성하는 방법과 생성된 코드의 인증 적용 방법에 대해서 설명하고 공격에 대한 안전성에 대해서 논의 한다.