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2016

Oblivious Transfer from Any Non-Trivial Elastic Noisy Channels via Secret Key Agreement

5 years 6 months ago
Oblivious Transfer from Any Non-Trivial Elastic Noisy Channels via Secret Key Agreement
A (γ, δ)-elastic channel is a binary symmetric channel between a sender and a receiver where the error rate of an honest receiver is δ while the error rate of a dishonest receiver lies within the interval [γ, δ]. In this paper, we show that from any non-trivial elastic channel (i.e., 0 < γ < δ < 1 2 ) we can implement oblivious transfer with information theoretic security. This was previously (Khurana et al., Eurocrypt 2016) only known for a subset of these parameters. Our technique relies on a new way to exploit protocols for information-theoretic key agreement from noisy channels. We also show that information theoretically secure commitments where the receiver commits follow from any non-trivial elastic channel.
Ignacio Cascudo, Ivan Damgård, Felipe Lacerd
Added 03 Apr 2016
Updated 03 Apr 2016
Type Journal
Year 2016
Where IACR
Authors Ignacio Cascudo, Ivan Damgård, Felipe Lacerda, Samuel Ranellucci
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