State Masking Over a Two-State Compound Channel

by   Sadaf Salehkalaibar, et al.

We consider fundamental limits for communicating over a compound channel when the state of the channel needs to be masked. Our model is closely related to an area of study known as covert communication that is a setting in which the transmitter wishes to communicate to legitimate receiver(s) while ensuring that the communication is not detected by an adversary. The main contribution in our two-state masking setup is the establishment of bounds on the throughput-key region when the constraint that quantifies how much the states are masked is defined to be the total variation distance between the two channel-induced distributions. For the scenario in which the key length is infinite, we provide sufficient conditions for when the bounds to coincide for the throughput, which follows the square-root law. Numerical examples, including that of a Gaussian channel, are provided to illustrate our results.



page 1

page 2

page 3

page 4


Covert Communication Over a Compound Channel

In this paper, we consider fundamental communication limits over a compo...

Keyless Covert Communication via Channel State Information

We consider the problem of covert communication over a state-dependent c...

Total Variation Distance Based Performance Analysis of Covert Communication over AWGN Channels in Non-asymptotic Regime

This paper investigates covert communication over an additive white Gaus...

Time-Division Transmission is Optimal for Covert Communication over Broadcast Channels

We consider a covert communication scenario where a legitimate transmitt...

Learning an Adversary's Actions for Secret Communication

Secure communication over a wiretap channel is investigated, in which an...

Source Coding for Synthesizing Correlated Randomness

We consider a scenario wherein two parties Alice and Bob are provided X_...

On Reverse Elastic Channels and the Asymmetry of Commitment Capacity under Channel Elasticity

Commitment is an important cryptographic primitive. It is well known tha...
This week in AI

Get the week's most popular data science and artificial intelligence research sent straight to your inbox every Saturday.