Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

Viewpoint: Victory for the Quantum Code Maker?

Roger Colbeck

Published Sep 29, 2014• 0 citations
OpenAlex

Abstract

To fend off potential hackers, researchers have taken a theoretical step closer to realizing a device-independent quantum cryptography protocol.

Related papers

Foiling Quantum Hackers

Hoi‐Kwong Lo

Researchers have implemented a new quantum encryption method that, in principle, may provide the ultimate security against hackers in real-world cryptography applications.

Physics•Sep 23, 2013•0 citations

A Study on Quantum Cryptographic Protocols in the Device-Independent Paradigm

Sarbani Roy

•Oct 1, 2020•0 citations

Victory for the Quantum Code Maker?

Roger Colbeck

Quantum cryptography promises levels of security that are impossible to replicate in a classical world.Can this security be guaranteed even when the quantum devices on which the protocol relies are untrusted?This central question dates back to the early 1990s when the challenge of achieving device-independent quantum key distribution was first formulated.We answer this challenge by rigorously proving the deviceindependent security of a slight variant of Ekert's original entanglement-based protocol against the most general (coherent) attacks.The resulting protocol is robust: While assuming only that the devices can be modeled by the laws of quantum mechanics and are spatially isolated from each other and from any adversary's laboratory, it achieves a linear key rate and tolerates a constant noise rate in the devices.In particular, the devices may have quantum memory and share arbitrary quantum correlations with the eavesdropper.The proof of security is based on a new quantitative understanding of the monogamous nature of quantum correlations in the context of a multiparty protocol.

Physics•Sep 29, 2014•2 citations

Device-Independent Quantum Cryptography

Federico Grasselli

Quantum science and technology•Jan 1, 2021•3 citations

From Quantum Cheating to Quantum Security

Daniel Gottesman, Hoi-Kwong Lo

Cryptography—the art of code-making—has a long history of military and diplomatic applications, dating back to the Babylonians. In World War II, the Allies' feat of breaking the legendary German code Enigma contributed greatly to their final victory. Nowadays, cryptography is becoming increasingly important in commercial applications for electronic business. Sensitive data such as credit card numbers and personal identification numbers (PINs) are routinely transmitted in encrypted form. Quantum mechanics is a new tool for both code-breakers and code-makers in their eternal arms race. It has the potential to revolutionize cryptography both by creating perfectly secure codes and by breaking standard encryption schemes.

arXiv:quant-ph/0111100•Physics Today•Nov 1, 2000•27 citations

Quantum Key Distribution Protocols with Device-Independent Security

Jincheng Zhang

This paper explores the design and theoretical foundations of quantum key distribution (QKD) protocols engineered for device-independent security. The core argument presented is that achieving unconditional security in QKD is possible without relying on the assumption of perfect hardware, a limitation inherent in many existing protocols. We propose a framework leveraging Bell inequality violations to establish secure key exchange, offering a fundamentally different approach compared to traditional protocols. This approach aims to mitigate the risks associated with side-channel attacks and device imperfections. The protocol outlined here represents a significant step towards realizing truly robust and secure quantum communication systems, offering a pathway for building cryptographic infrastructure resilient to evolving threats. The key contributions lie in the theoretical rigor applied to device independence and the utilization of Bell tests as a core mechanism for establishing security. The presented model offers a starting point for future research and development in this critical area of quantum cryptography.

•Aug 31, 2026•0 citations
Quantum cryptography promises levels of security that are impossible to replicate in a classical world.Can this security be guaranteed even when the quantum devices on which the protocol relies are untrusted?This central question dates back to the early 1990s when the challenge of achieving device-independent quantum key distribution was first formulated.We answer this challenge by rigorously proving the deviceindependent security of a slight variant of Ekert's original entanglement-based protocol against the most general (coherent) attacks.The resulting protocol is robust: While assuming only that the devices can be modeled by the laws of quantum mechanics and are spatially isolated from each other and from any adversary's laboratory, it achieves a linear key rate and tolerates a constant noise rate in the devices.In particular, the devices may have quantum memory and share arbitrary quantum correlations with the eavesdropper.The proof of security is based on a new quantitative understanding of the monogamous nature of quantum correlations in the context of a multiparty protocol.
Cryptography—the art of code-making—has a long history of military and diplomatic applications, dating back to the Babylonians. In World War II, the Allies' feat of breaking the legendary German code Enigma contributed greatly to their final victory. Nowadays, cryptography is becoming increasingly important in commercial applications for electronic business. Sensitive data such as credit card numbers and personal identification numbers (PINs) are routinely transmitted in encrypted form. Quantum mechanics is a new tool for both code-breakers and code-makers in their eternal arms race. It has the potential to revolutionize cryptography both by creating perfectly secure codes and by breaking standard encryption schemes.
This paper explores the design and theoretical foundations of quantum key distribution (QKD) protocols engineered for device-independent security. The core argument presented is that achieving unconditional security in QKD is possible without relying on the assumption of perfect hardware, a limitation inherent in many existing protocols. We propose a framework leveraging Bell inequality violations to establish secure key exchange, offering a fundamentally different approach compared to traditional protocols. This approach aims to mitigate the risks associated with side-channel attacks and device imperfections. The protocol outlined here represents a significant step towards realizing truly robust and secure quantum communication systems, offering a pathway for building cryptographic infrastructure resilient to evolving threats. The key contributions lie in the theoretical rigor applied to device independence and the utilization of Bell tests as a core mechanism for establishing security. The presented model offers a starting point for future research and development in this critical area of quantum cryptography.