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arXiv · 1304.3658

Efficient One-Way Secret-Key Agreement and Private Channel Coding via Polarization

David Sutter·Joseph M. Renes·Renato Renner
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Abstract

We introduce explicit schemes based on the polarization phenomenon for the tasks of one-way secret key agreement from common randomness and private channel coding. For the former task, we show how to use common randomness and insecure one-way communication to obtain a strongly secure key such that the key construction has a complexity essentially linear in the blocklength and the rate at which the key is produced is optimal, i.e., equal to the one-way secret-key rate. For the latter task, we present a private channel coding scheme that achieves the secrecy capacity using the condition of strong secrecy and whose encoding and decoding complexity are again essentially linear in the blocklength.

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David Sutter, Joseph M. Renes, Renato Renner. 2013-04-12. Efficient One-Way Secret-Key Agreement and Private Channel Coding via Polarization. https://doi.org/10.1007/978-3-642-42033-7_11

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