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arXiv · 1306.5299

Secret key generation from Gaussian sources using lattice hashing

Cong Ling·Laura Luzzi·Matthieu R. Bloch
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Abstract

We propose a simple yet complete lattice-based scheme for secret key generation from Gaussian sources in the presence of an eavesdropper, and show that it achieves strong secret key rates up to 1/2 nat from the optimal in the case of "degraded" source models. The novel ingredient of our scheme is a lattice-hashing technique, based on the notions of flatness factor and channel intrinsic randomness. The proposed scheme does not require dithering.

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Cong Ling, Laura Luzzi, Matthieu R. Bloch. 2013-06-22. Secret key generation from Gaussian sources using lattice hashing. https://arxiv.org/abs/1306.5299

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