Online Voting Using Point to MultiPoint Quantum Key Distribution Via Passive Optical Networks

We propose using Point-to-Multipoint quantum key distribution QKD via time division multiplexing TDM and wavelength division multiplexing WDM in passive optical networks PON to improve the security of online voting systems...

Network-Wide Quantum Key Distribution with Onion Routing Relay (Conference Version)

The advancement of quantum computing threatens classical cryptographic methods, necessitating the development of secure quantum key distribution QKD solutions for QKD Networks QKDN. In this paper, a novel key distribution protocol, Onion Routing Relay ORR, that integrates onion routing OR with...

Public-Key Quantum Fire and Key-Fire from Classical Oracles

Quantum fire was recently formalized by Bostanci, Nehoran and Zhandry STOC 25. This notion considers a distribution of quantum states that can be efficiently cloned, but cannot be converted into a classical string. Previously, work of Nehoran and Zhandry ITCS 24 showed how to construct quantum fi...

Performance Analysis of MDI-QKD in Thermal-Loss and Phase Noise Channels

Measurement-device-independent quantum key distribution MDI-QKD, enhances quantum cryptography by mitigating detector-side vulnerabilities. This study analyzes MDI-QKD performance in thermal-loss and phase noise channels, modeled as depolarizing and dephasing channels to capture thermal and phase...

OPENSUSE-SU-2024:0005-1 Security update for putty

This update for putty fixes the following issues: putty was updated to to release 0.80: Fix CVE-2023-48795 boo1218128 - Update to release 0.79 Terminal mouse tracking: support for mouse movements which are not drags, and support for horizontal scroll events e.g. generated by trackpads. Fixed: PuT...

GCHQ on Quantum Key Distribution

The UK's GCHQ delivers a brutally blunt assessment of quantum key distribution: QKD protocols address only the problem of agreeing keys for encrypting data. Ubiquitous on-demand modern services such as verifying identities and data integrity, establishing network sessions, providing access contro...

Chinese Quantum Satellite Sends First ‘Unhackable’ Data to Earth

In what appears to be the world's first quantum satellite transmission, China has successfully sent an "unbreakable" code over a long distance from an orbiting satellite to the Earth, achieving a milestone in the next generation encryption based on "quantum cryptography." In August last year, Chi...

Entangled Photons on Silicon Chip: Secure Communications & Ultrafast Computers

With the rise in technology, the need of ultrafast quantum computer has also increased that can work on huge numbers and calculations at the same time. Quantum technology has long been a scientific dream, but now it is a step closer to becoming a reality after a team of scientists has figured out...