IEEE transactions on information theory, 2008-06, Vol.54 (6), p.2515-2534
2008
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Details
- Autor(en) / Beteiligte
- Titel
- Wireless Information-Theoretic Security
- Ist Teil von
- IEEE transactions on information theory, 2008-06, Vol.54 (6), p.2515-2534
- Ort / Verlag
- New York, NY: IEEE
- Erscheinungsjahr
- 2008
- Quelle
- IEEE Xplore
- Beschreibungen/Notizen
- 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.
- Sprache
- Englisch
- Identifikatoren
- ISSN: 0018-9448eISSN: 1557-9654DOI: 10.1109/TIT.2008.921908Titel-ID: cdi_proquest_miscellaneous_875032757
- Format
- –
- Schlagworte
- Amplification, Applied sciences, Channel state information, Channels, Communication channels, Communication system security, Computer information security, Cryptography, Data integrity, Data security, Data transmission, Electronic eavesdropping, Exact sciences and technology, Fading, Information analysis, Information security, Information theory, Information, signal and communications theory, Information-theoretic security, low-density parity-check (LDPC) codes, Messages, Multilevel, Parity check codes, Privacy, Protection, Protocol, secrecy capacity, Secret, secret key agreement, Security, Signal and communications theory, Systems, networks and services of telecommunications, Telecommunications, Telecommunications and information theory, Transmission and modulation (techniques and equipments), Wireless application protocol, wireless channels, Wireless communication, Wireless communications