NDLI: Secret Key Generation for Correlated Gaussian Sources

Content Provider	IEEE Xplore Digital Library
Author	Nitinawarat, S. Narayan, P.
Copyright Year	1963
Abstract	Secret key generation by multiple terminals is considered based on their observations of jointly distributed Gaussian signals, followed by public communication among themselves. Exploiting an inherent connection between secrecy generation and lossy data compression, two main contributions are made. The first is a characterization of strong secret key capacity, and entails a converse proof technique that is valid for real-valued (and not necessarily Gaussian) as well as finite-valued signals. The capacity formula acquires a simple form when the terminals observe “symmetrically correlated” jointly Gaussian signals. For the latter setup with two terminals, considering schemes that involve quantization at one terminal, the best rate of an achievable secret key is characterized as a function of quantization rate; secret key capacity is attained as the quantization rate tends to infinity. Structured codes are shown to attain the optimum tradeoff between secret key rate and quantization rate, constituting our second main contribution.
Sponsorship	IEEE Information Theory Society
Starting Page	3373
Ending Page	3391
Page Count	19
File Size	505873
File Format	PDF
ISSN	00189448
Volume Number	58
Issue Number	6
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-06-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Quantization Bismuth Educational institutions Entropy Computers Mutual information Data compression strong secrecy Linear code multiterminal Gaussian source model nested lattice code public communication quantization secret key capacity
Content Type	Text
Resource Type	Article
Subject	Library and Information Sciences Information Systems Computer Science Applications

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