Secrecy on the Physical Layer in Wireless Networks
نویسندگان
چکیده
This chapter provides a comprehensive state-of-the-art description of the emerging field of physical layer security. We will consider wireless security from an information theoretic view, which allows us to talk about provable secrecy and to derive ultimate secrecy limits. Our main focus is on the optimization of transmit strategies and resource allocation schemes under secrecy constraints. We will consider the following scenario, which is illustrated in Figure 1: Alice wants to send a private message to Bob, which should be kept perfectly secret from Eve. Eve listens and tries to decode the message that Alice sends to Bob.
منابع مشابه
Security Analysis of Lightweight Authentication Scheme with Key Agreement using Wireless Sensor Network for Agricultural Monitoring System
Wireless sensor networks have many applications in the real world and have been developed in various environments. But the limitations of these networks, including the limitations on the energy and processing power of the sensors, have posed many challenges to researchers. One of the major challenges is the security of these networks, and in particular the issue of authentication in the wireles...
متن کاملA Comparison between Different Meta-Heuristic Techniques in Power Allocation for Physical Layer Security
Node cooperation can protect wireless networks from eavesdropping by using the physical characteristics of wireless channels rather than cryptographic methods. Allocating the proper amount of power to cooperative nodes is a challenging task. In this paper, we use three cooperative nodes, one as relay to increase throughput at the destination and two friendly jammers to degrade eavesdropper&rsqu...
متن کاملPhysical layer security in wireless networks : design and enhancement
Security and privacy have become increasingly significant concerns in wireless communication networks, due to the open nature of the wireless medium which makes the wireless transmission vulnerable to eavesdropping and inimical attacking. The emergence and development of decentralized and ad-hoc wireless networks pose great challenges to the implementation of higher-layer key distribution and m...
متن کاملPhysical Layer Security in Wireless Communication Networks
Physical layer (PHY) security has become an emerging area of research recently. Wireless networks use unguided medium as communication channels, so gathering wireless data transmission is easier when compared to traditional cable systems. With the rise of new security challenges, many different solutions have been offered and are being developed. However, maintaining security in wireless networ...
متن کاملPhysical Layer Security in PLC Networks: An Emerging Scenario, Other Than Wireless
We consider the secure transmission of information over power line communication (PLC) networks. The focus is on the secrecy guaranteed at the physical layer, named physical layer security (PLS). Although PLS has been deeply investigated for the wireless case, it is not the same for the PLC environment. Thus, starting from the knowledge in the wireless context, we extend the results to typical ...
متن کامل