Name
Abstract | ||
|---|---|---|
In unsecured communications settings, ascertaining the trustworthiness of received information, called authentication, is paramount. We consider keyless authentication over an arbitrarily-varying channel, where channel states are chosen by a malicious adversary with access to noisy versions of transmitted sequences. We have shown previously that a channel condition termed U-overwritability is a sufficient condition for zero authentication capacity over such a channel, and also that with a deterministic encoder, a sufficiently clear-eyed adversary is essentially omniscient. In this paper, we show that even if the authentication capacity with a deterministic encoder and an essentially omniscient adversary is zero, allowing a stochastic encoder can result in a positive authentication capacity. Furthermore, the authentication capacity with a stochastic encoder can be equal to the no-adversary capacity of the underlying channel in this case. We illustrate this for a binary channel model, which provides insight into the more general case. |
Year | DOI | Venue |
|---|---|---|
2020 | 10.1109/ISIT44484.2020.9174179 | ISIT |
DocType | Citations | PageRank |
Conference | 0 | 0.34 |
References | Authors | |
0 | 5 | |
Name | Order | Citations | PageRank |
|---|---|---|---|
| Allison Beemer | 1 | 1 | 4.41 |
| Eric Graves | 2 | 20 | 7.68 |
| Joerg Kliewer | 3 | 0 | 2.03 |
| Oliver Kosut | 4 | 320 | 44.96 |
| Paul L. Yu | 5 | 113 | 16.40 |