Wiretapped Commitment Over Binary Channels
We propose the problem of wiretapped commitment, where two parties, say committer Alice and receiver Bob, engage in a commitment protocol using a noisy channel as a resource, in the presence of an eavesdropper, say Eve. Noisy versions of Alice's transmission over the wiretap channel are received by both Bob and Eve. We seek to determine the maximum commitment throughput in the presence of eavesdropper, i.e., wiretapped commitment capacity, where in addition to the standard security requirements for two-party commitment, one seeks to ensure that Eve doesn't learn about the commit string. A key interest in this work is to explore the effect of collusion (or lack of it) between the eavesdropper Eve and either Alice or Bob. Toward the same, we present results on the wiretapped commitment capacity under the so-called Y-private regime (when Alice or Bob cannot collude with Eve) and the 2-private regime (when Alice or Bob may collude with Eve).
École Polytechnique Fédérale de Lausanne
Centrum Wiskunde & Informatica
Indian Institute of Technology Kharagpur
2024-07-07
979-8-3503-8284-6
3528
3533
REVIEWED
EPFL
| Event name | Event acronym | Event place | Event date |
2024 ISIT | Athens, Greece | 2024-07-07 - 2024-07-12 | |