Secret Key Agreement from Vector Gaussian Sources by Rate Limited Public Communication

Abstract

We investigate the secret key agreement from correlated vector Gaussian sources in which the legitimate parties can use the public communication with limited rate. For the class of protocols with the one-way public communication, we show that the optimal trade-off between the rate of key generation and the rate of the public communication is characterized as an optimization problem of a Gaussian random variable. The characterization is derived by using the enhancement technique introduced by Weingarten et.al. for MIMO Gaussian broadcast channel.

10 pages, 4 figures, A part of this paper was presented at 2010 IEEE International Symposium on Information Theory in Austin U.S.A, version 2 corrected Remark 6 and added some references

References in corpus (6)

• Multiple-Input Multiple-Output Gaussian Broadcast Channels with Common and Confidential Messages
• MIMO Gaussian Broadcast Channels with Confidential and Common Messages
• Secret Key Agreement from Correlated Gaussian Sources by Rate Limited Public Communication
• Secret Key Agreement by Soft-decision of Signals in Gaussian Maurer's Model
• The Secrecy Capacity Region of the Gaussian MIMO Multi-receiver Wiretap Channel
• Multiple-Input Multiple-Output Gaussian Broadcast Channels with Confidential Messages

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