Journal ArticleDOI
Wireless Information-Theoretic Security
TLDR
A practical secure communication protocol is developed, which uses a four-step procedure to ensure wireless information-theoretic security and is shown that the protocol is effective in secure key renewal-even in the presence of imperfect channel state information.Abstract:
This paper considers the transmission of confidential data over wireless channels. Based on an information-theoretic formulation of the problem, in which two legitimates partners communicate over a quasi-static fading channel and an eavesdropper observes their transmissions through a second independent quasi-static fading channel, the important role of fading is characterized in terms of average secure communication rates and outage probability. Based on the insights from this analysis, a practical secure communication protocol is developed, which uses a four-step procedure to ensure wireless information-theoretic security: (i) common randomness via opportunistic transmission, (ii) message reconciliation, (iii) common key generation via privacy amplification, and (iv) message protection with a secret key. A reconciliation procedure based on multilevel coding and optimized low-density parity-check (LDPC) codes is introduced, which allows to achieve communication rates close to the fundamental security limits in several relevant instances. Finally, a set of metrics for assessing average secure key generation rates is established, and it is shown that the protocol is effective in secure key renewal-even in the presence of imperfect channel state information.read more
Citations
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Journal ArticleDOI
Automatic Secret Keys From Reciprocal MIMO Wireless Channels: Measurement and Analysis
Jon W. Wallace,Rajesh K. Sharma +1 more
TL;DR: Information theoretic limits for random key generation in multiple-input multiple-output (MIMO) wireless systems exhibiting a reciprocal channel response are investigated experimentally with a new three-node MIMO measurement campaign.
Journal ArticleDOI
Performance of Transmit Antenna Selection Physical Layer Security Schemes
TL;DR: It is shown that the PHY security can be considerably enhanced when multiple antennas are available at the legitimate transmitter, and a single RF chain multiple antenna transmitter reduces cost, complexity, size and power consumption at the expense of a slight loss in performance with respect to a multiple RF chain transmitter.
Journal ArticleDOI
Enhancing Physical-Layer Secrecy in Multiantenna Wireless Systems: An Overview of Signal Processing Approaches
TL;DR: An overview of the signal processing techniques used to enhance secrecy in the physical layer of multiantenna wireless communication systems and how training procedures are developed to enable better channel estimation performance at the destination than at the eavesdropper is provided.
Journal ArticleDOI
On the Design of Artificial-Noise-Aided Secure Multi-Antenna Transmission in Slow Fading Channels
TL;DR: This paper derives accurate approximations for the maximal throughput in both scenarios in the high signal-to-noise ratio region, and gives new insights into the additional power cost for achieving a higher security level while maintaining a specified target throughput.
Proceedings ArticleDOI
Exploiting Multiple-Antenna Diversity for Shared Secret Key Generation in Wireless Networks
TL;DR: This work proposes and implements a shared secret key generation protocol, Multiple-Antenna KEy generator (MAKE) using off-the-shelf 802.11n multiple-antenna devices, and shows the trade-off between bit generation rate and bit agreement ratio when using multi-level quantization.
References
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Book
Wireless Communications: Principles and Practice
TL;DR: WireWireless Communications: Principles and Practice, Second Edition is the definitive modern text for wireless communications technology and system design as discussed by the authors, which covers the fundamental issues impacting all wireless networks and reviews virtually every important new wireless standard and technological development, offering especially comprehensive coverage of the 3G systems and wireless local area networks (WLANs).
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New Directions in Cryptography
TL;DR: This paper suggests ways to solve currently open problems in cryptography, and discusses how the theories of communication and computation are beginning to provide the tools to solve cryptographic problems of long standing.
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Communication theory of secrecy systems
TL;DR: A theory of secrecy systems is developed on a theoretical level and is intended to complement the treatment found in standard works on cryptography.
Book
Fundamentals of Wireless Communication
David Tse,Pramod Viswanath +1 more
TL;DR: In this paper, the authors propose a multiuser communication architecture for point-to-point wireless networks with additive Gaussian noise detection and estimation in the context of MIMO networks.