26 citations · 106 across the 9 of their papers we have counts for
9 papers
Quantum Keyless Private Communication with Decoy States for Space Channels
Angeles Vazquez-Castro, Andreas Winter, Hugo Zbinden
With the increasing demand for secure communication in optical space networks, it is essential to develop physical-layer scalable security solutions. In this context, we present th…
Covert communication with Gaussian noise: from random access channel to point-to-point channel
Masahito Hayashi, Angeles Vazquez-Castro
We propose a covert communication protocol for the spread-spectrum multiple random access with additive white Gaussian noise (AWGN) channel. No existing paper has studied covert co…
Computation-aided classical-quantum multiple access to boost network communication speeds
Masahito Hayashi, Angeles Vazquez-Castro
A multiple access channel (MAC) consists of multiple senders simultaneously transmitting their messages to a single receiver. For the classical-quantum case (cq-MAC), achievable ra…
Quantum Keyless Privacy vs. Quantum Key Distribution for Space Links
A. Vazquez-Castro, D. Rusca, H. Zbinden
We study information theoretical security for space links between a satellite and a ground-station. Quantum key distribution (QKD) is a well established method for information theo…
Physical Layer Security Protocol for Poisson Channels for Passive Man-in-the-middle Attack
Masahito Hayashi, Angeles Vazquez-Castro
In this work, we focus on the classical optical channel having Poissonian statistical behavior and propose a novel secrecy coding-based physical layer protocol. Our protocol is dif…
Two-Way Physical Layer Security Protocol for Gaussian Channels
Masahito Hayashi, Angeles Vazquez-Castro
In this paper we propose a two-way protocol of physical layer security using the method of privacy amplification against eavesdroppers. First we justify our proposed protocol by an…
Compute-and-forward relaying with LDPC codes over QPSK scheme
Satoshi Takabe, Tadashi Wadayama, Ángeles Vazquez-Castro +1
In this paper, we study a compute-and-forward (CAF) relaying scheme with low-density parity-check (LDPC) codes, a special case of physical layer network coding, under the quadratur…
Secure Computation-and-Forward with Linear Codes
Masahito Hayashi, Tadashi Wadayama, Angeles Vazquez-Castro
We discuss secure transmission via an untrusted relay when we have a multiple access phase from two nodes to the relay and broadcast phase from the relay to the two nodes. To reali…
Physical Layer Security for RF Satellite Channels in the Finite-length Regime
Angeles Vazquez-Castro, Masahito Hayashi
Secure communications is becoming increasingly relevant in the development of space technology. Well established cryptographic technology is already in place and is expected to con…