1,472 research outputs found
Security and Privacy Issues in Wireless Mesh Networks: A Survey
This book chapter identifies various security threats in wireless mesh
network (WMN). Keeping in mind the critical requirement of security and user
privacy in WMNs, this chapter provides a comprehensive overview of various
possible attacks on different layers of the communication protocol stack for
WMNs and their corresponding defense mechanisms. First, it identifies the
security vulnerabilities in the physical, link, network, transport, application
layers. Furthermore, various possible attacks on the key management protocols,
user authentication and access control protocols, and user privacy preservation
protocols are presented. After enumerating various possible attacks, the
chapter provides a detailed discussion on various existing security mechanisms
and protocols to defend against and wherever possible prevent the possible
attacks. Comparative analyses are also presented on the security schemes with
regards to the cryptographic schemes used, key management strategies deployed,
use of any trusted third party, computation and communication overhead involved
etc. The chapter then presents a brief discussion on various trust management
approaches for WMNs since trust and reputation-based schemes are increasingly
becoming popular for enforcing security in wireless networks. A number of open
problems in security and privacy issues for WMNs are subsequently discussed
before the chapter is finally concluded.Comment: 62 pages, 12 figures, 6 tables. This chapter is an extension of the
author's previous submission in arXiv submission: arXiv:1102.1226. There are
some text overlaps with the previous submissio
A Lightweight and Privacy-Preserving Authentication Protocol for Mobile Edge Computing
With the advent of the Internet-of-Things (IoT), vehicular networks and
cyber-physical systems, the need for real-time data processing and analysis has
emerged as an essential pre-requite for customers' satisfaction. In this
direction, Mobile Edge Computing (MEC) provides seamless services with reduced
latency, enhanced mobility, and improved location awareness. Since MEC has
evolved from Cloud Computing, it inherited numerous security and privacy issues
from the latter. Further, decentralized architectures and diversified
deployment environments used in MEC platforms also aggravate the problem;
causing great concerns for the research fraternity. Thus, in this paper, we
propose an efficient and lightweight mutual authentication protocol for MEC
environments; based on Elliptic Curve Cryptography (ECC), one-way hash
functions and concatenation operations. The designed protocol also leverages
the advantages of discrete logarithm problems, computational Diffie-Hellman,
random numbers and time-stamps to resist various attacks namely-impersonation
attacks, replay attacks, man-in-the-middle attacks, etc. The paper also
presents a comparative assessment of the proposed scheme relative to the
current state-of-the-art schemes. The obtained results demonstrate that the
proposed scheme incurs relatively less communication and computational
overheads, and is appropriate to be adopted in resource constraint MEC
environments.Comment: To appear in IEEE GLOBECOM 201
Secure and Privacy-Preserving Authentication Protocols for Wireless Mesh Networks
Wireless mesh networks (WMNs) have emerged as a promising concept to meet the
challenges in next-generation wireless networks such as providing flexible,
adaptive, and reconfigurable architecture while offering cost-effective
solutions to service providers. As WMNs become an increasingly popular
replacement technology for last-mile connectivity to the home networking,
community and neighborhood networking, it is imperative to design efficient and
secure communication protocols for these networks. However, several
vulnerabilities exist in currently existing protocols for WMNs. These security
loopholes can be exploited by potential attackers to launch attack on WMNs. The
absence of a central point of administration makes securing WMNs even more
challenging. The broadcast nature of transmission and the dependency on the
intermediate nodes for multi-hop communications lead to several security
vulnerabilities in WMNs. The attacks can be external as well as internal in
nature. External attacks are launched by intruders who are not authorized users
of the network. For example, an intruding node may eavesdrop on the packets and
replay those packets at a later point of time to gain access to the network
resources. On the other hand, the internal attacks are launched by the nodes
that are part of the WMN. On example of such attack is an intermediate node
dropping packets which it was supposed to forward. This chapter presents a
comprehensive discussion on the current authentication and privacy protection
schemes for WMN. In addition, it proposes a novel security protocol for node
authentication and message confidentiality and an anonymization scheme for
privacy protection of users in WMNs.Comment: 32 pages, 10 figures. The work is an extended version of the author's
previous works submitted in CoRR: arXiv:1107.5538v1 and arXiv:1102.1226v
Privacy considerations for secure identification in social wireless networks
This thesis focuses on privacy aspects of identification and key exchange
schemes for mobile social networks. In particular, we consider identification
schemes that combine wide area mobile communication with short range communication
such as Bluetooth, WiFi. The goal of the thesis is to identify possible
security threats to personal information of users and to define a framework
of security and privacy requirements in the context of mobile social networking.
The main focus of the work is on security in closed groups and the procedures
of secure registration, identification and invitation of users in mobile social networks.
The thesis includes an evaluation of the proposed identification and key
exchange schemes and a proposal for a series of modifications that augments
its privacy-preserving capabilities. The ultimate design provides secure and effective
identity management in the context of, and in respect to, the protection
of user identity privacy in mobile social networks
On the security of an anonymous roaming protocol in UMTS mobile networks
In this communication, we first show that the privacy-preserving roaming protocol recently proposed for mobile networks cannot achieve the claimed security level. Then we suggest an improved protocol to remedy its security problems
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