Network Oblivious Transfer via Noisy Channels: Limits and Capacities

Hadi Aghaee; Bahareh Akhbari; Christian Deppe

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arXiv · 2501.17021

Network Oblivious Transfer via Noisy Channels: Limits and Capacities

Hadi Aghaee·Bahareh Akhbari·Christian Deppe

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Abstract

In this paper, we study the information-theoretic limits of oblivious transfer via noisy channels. We also investigate oblivious transfer over a noisy multiple-access channel with two non-colluding senders and a single receiver. The channel is modeled through correlations among the parties, who may be honest-but-curious or, in the case of the receiver, potentially malicious. We first revisit the information-theoretic limits of two-party oblivious transfer and then extend these results to the multiple-access setting. For honest-but-curious participants, we introduce a multiparty protocol that reduces a general multiple access channel to a suitable correlation model. In scenarios with a malicious receiver, we characterize an achievable oblivious transfer rate region.

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Hadi Aghaee, Bahareh Akhbari, Christian Deppe. 2025-01-28. Network Oblivious Transfer via Noisy Channels: Limits and Capacities. https://arxiv.org/abs/2501.17021

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