303 citations · 538 across the 19 of their papers we have counts for
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Cybersecurity of Quantum Key Distribution Implementations
Ittay Alfassi, Ran Gelles, Rotem Liss +1
Practical implementations of Quantum Key Distribution (QKD) often deviate from the theoretical protocols, exposing the implementations to various attacks even when the underlying (…
Attacks on Fixed Apparatus Quantum Key Distribution Schemes
Michel Boyer, Ran Gelles, Tal Mor
We consider quantum key distribution implementations in which the receiver's apparatus is fixed and does not depend on his choice of basis at each qubit transmission. We show that,…
Security and Composability of Randomness Expansion from Bell Inequalities
Serge Fehr, Ran Gelles, Christian Schaffner
The nonlocal behavior of quantum mechanics can be used to generate guaranteed fresh randomness from an untrusted device that consists of two nonsignalling components; since the gen…
Reversed Space Attacks
Ran Gelles, Tal Mor
Many quantum key distribution (QKD) schemes are based on sending and measuring qubits -- two-dimensional quantum systems. Yet, in practical realizations and experiments, the measur…
Position-Based Quantum Cryptography: Impossibility and Constructions
Harry Buhrman, Nishanth Chandran, Serge Fehr +4
In this work, we study position-based cryptography in the quantum setting. The aim is to use the geographical position of a party as its only credential. On the negative side, we s…
Position-Based Quantum Cryptography
Nishanth Chandran, Serge Fehr, Ran Gelles +2
This paper is replaced by arXiv:1009.2490. The new paper includes a general impossibility result and restricted possibility results, and it has two additional authors.