Technical Program

Paper Detail

Paper Title Steganography Protocols for Quantum Channels
Paper IdentifierTH3.R5.4
Authors Mehrdad Tahmasbi, Matthieu R. Bloch, Georgia Institute of Technology, United States
Session Secure and Covert Communication
Location Saint Victor, Level 3
Session Time Thursday, 11 July, 14:30 - 16:10
Presentation Time Thursday, 11 July, 15:30 - 15:50
Manuscript  Click here to download the manuscript
Abstract In steganography, two parties desire to conceal a message within an innocent message without arising suspicion from a warden who watches the communications. Extensions of the classical results to the quantum setting have been recently investigated under the assumption that the warden has an inaccurate knowledge of what the channel is. As tasks that can be performed over a quantum channel are much more diverse than those over a classical channel, we formulate several problems depending on the task used as the \emph{cover} and the \emph{cypher} task, and we establish results for three of these problems. When the cover task is quantum communication and the cypher task is classical communication, our results improve earlier results by relaxing the need for a shared key between the transmitter and the receiver, and the results hold under milder assumptions on the cover quantum communication code.