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Scenarios for Optical Encryption Using Quantum Keys.

Luis Velasco1, Morteza Ahmadian2, Laura Ortiz3

  • 1Advanced Broadband Communications Center (CCABA), Universitat Politècnica de Catalunya (UPC), 08034 Barcelona, Spain.

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Summary
This summary is machine-generated.

Quantum-enhanced LightPath SECurity (LPSec) improves optical data encryption by integrating quantum random number generators and quantum key distribution networks. This approach addresses key generation and distribution limitations for secure, low-latency optical communications.

Keywords:
Post-Quantum CryptographyQuantum Key DistributionQuantum Random Number Generatoroptical encryption

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Area of Science:

  • Quantum Information Science
  • Optical Communications Engineering
  • Cybersecurity

Background:

  • Optical communication systems offer high capacity and low latency but are vulnerable to security threats.
  • Existing encryption methods like LightPath SECurity (LPSec) face challenges in key generation and distribution.
  • Secure data transmission at the optical layer is crucial for modern communication infrastructure.

Purpose of the Study:

  • To enhance the LightPath SECurity (LPSec) protocol for optical layer encryption.
  • To integrate Quantum Random Number Generators (QRNG) and Quantum Key Distribution (QKD) networks into LPSec.
  • To analyze the security, efficiency, and applicability of quantum-enhanced LPSec scenarios.

Main Methods:

  • Proposed three scenarios for integrating QRNG and QKD with LPSec: Scenario A (both transponders in QKD network), Scenario B (one transponder in QKD network, using QRNG and LPSec for key distribution), and Scenario C (Scenario B with Post-Quantum Cryptography (PQC) and Key Encapsulation Mechanism (KEM)).
  • Evaluated scenarios based on security, efficiency, and applicability.
  • Conducted experimental validation on the Madrid Quantum Infrastructure.

Main Results:

  • Demonstrated the feasibility of quantum-enhanced LPSec for secure, low-latency optical encryption.
  • Showcased the potential of QRNG and QKD to overcome LPSec's key management limitations.
  • Validated the proposed solutions through experimental assessment.

Conclusions:

  • Quantum-enhanced LPSec offers a viable solution for securing high-capacity, low-latency optical communications.
  • The integration of quantum technologies significantly improves the security and key management of optical encryption.
  • The experimental results confirm the practical applicability of the proposed quantum-enhanced cryptographic solutions.