Network-wide Quantum Key Distribution with Onion Routing Relay
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arXiv
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| Main Authors: | , , , |
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866912382254579712 |
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| author | Otero-García, Pedro Pérez-Castro, David Fernández-Veiga, Manuel Fernández-Vilas, Ana |
| author_facet | Otero-García, Pedro Pérez-Castro, David Fernández-Veiga, Manuel Fernández-Vilas, Ana |
| contents | 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 post-quantum cryptography (PQC) in a key-relay (KR) model is evaluated for QKDNs. This approach increases the security by enhancing confidentiality, integrity, authenticity, and anonymity in quantum-secure communications. By employing PQC-based encapsulation, ORR pretends to avoid the security risks posed by intermediate malicious nodes and ensures end-to-end security. Results show that the performance of the ORR model, against current key-relay (KR) and trusted-node (TN) approaches, demonstrating its feasibility and applicability in high-security environments maintaining a consistent Quality of Service (QoS). The results show that while ORR incurs higher encryption overhead, it provides substantial security improvements without significantly impacting the overall key distribution time. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2505_13239 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Network-wide Quantum Key Distribution with Onion Routing Relay Otero-García, Pedro Pérez-Castro, David Fernández-Veiga, Manuel Fernández-Vilas, Ana Cryptography and Security 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 post-quantum cryptography (PQC) in a key-relay (KR) model is evaluated for QKDNs. This approach increases the security by enhancing confidentiality, integrity, authenticity, and anonymity in quantum-secure communications. By employing PQC-based encapsulation, ORR pretends to avoid the security risks posed by intermediate malicious nodes and ensures end-to-end security. Results show that the performance of the ORR model, against current key-relay (KR) and trusted-node (TN) approaches, demonstrating its feasibility and applicability in high-security environments maintaining a consistent Quality of Service (QoS). The results show that while ORR incurs higher encryption overhead, it provides substantial security improvements without significantly impacting the overall key distribution time. |
| title | Network-wide Quantum Key Distribution with Onion Routing Relay |
| topic | Cryptography and Security |
| url | https://arxiv.org/abs/2505.13239 |