A privacy-preserving key transmission protocol to distribute QRNG keys using zk-SNARKs
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http://hdl.handle.net/2183/36138
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- GI-LIA2 - Artigos [58]
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A privacy-preserving key transmission protocol to distribute QRNG keys using zk-SNARKsAutor(es)
Data
2024-04Cita bibliográfica
D. Soler, C. Dafonte, M. Fernández-Veiga, A. F. Vilas, y F. J. Nóvoa, «A privacy-preserving key transmission protocol to distribute QRNG keys using zk-SNARKs», Computer Networks, vol. 242, p. 110259, abr. 2024, doi: 10.1016/j.comnet.2024.110259.
Resumo
[Absctract]: High-entropy random numbers are an essential part of cryptography, and Quantum Random Number Generators (QRNG) are an emergent technology that can provide high-quality keys for cryptographic algorithms but unfortunately are currently difficult to access. Existing Entropy-as-a-Service solutions require users to trust the central authority distributing the key material, which is not desirable in a high-privacy environment. In this paper, we present a novel key transmission protocol that allows users to obtain cryptographic material generated by a QRNG in such a way that the server is unable to identify which user is receiving each key. This is achieved with the inclusion of Zero Knowledge Succinct Non-interactive Arguments of Knowledge (zk-SNARK), a cryptographic primitive that allow users to prove knowledge of some value without needing to reveal it. The security analysis of the protocol proves that it satisfies the properties of Anonymity, Unforgeability and Confidentiality, as defined in this document. We also provide an implementation of the protocol demonstrating its functionality and performance, using NFC as the transmission channel for the QRNG key
Palabras chave
QRNG
Key transmission
Zk-SNARK
Communication protocol
Privacy-preserving authentication
NFC
Key transmission
Zk-SNARK
Communication protocol
Privacy-preserving authentication
NFC
Versión do editor
Dereitos
Atribución-NoComercial-SinDerivadas 3.0 España
ISSN
1872-7069
1389-1286
1389-1286