Secret-Key-Agreement Advantage Distillation With Quantization Correction

Ardizzon, Francesco; Giurisato, Francesco; Tomasin, Stefano

doi:10.1109/lcomm.2023.3300462

Cited by 3 publications

(2 citation statements)

References 14 publications

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“…As also detailed in [18], the proposed protocol requires also a joint quantizer design and the use of quantization error correction. We remark that the quantizers used by Alice, Bob, and Eve are designed before the actual SKA procedure.…”

Section: Advantage-distillation Protocolmentioning

confidence: 99%

“…In this paper, we propose a novel advantagedistillation strategy for the source model SKA, the advantage distillation with quantization correction (ADQC). While in [18], we discussed an advantage-distillation strategy for an ideal scalar Gaussian process, here we consider here a realistic scenario, where two sensors of an UWAN are exploiting the UWACs's measurements to extract the secret key. In particular, the main contributions of this paper are:…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Advantage-Distillation Strategies with Side Information for Underwater Acoustic Channels

Ardizzon,

Giurisato,

Tomasin

2024

Proceedings of the 10th Convention of the European Acoustics Association Forum Acusticum 2023

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Many military and civil applications using underwater acoustic channels (UWACs) are paired with security services, providing, for instance, secrecy and authenticity to the communication. These mechanisms however often require periodically renewed symmetric keys among two communicating devices, namely Alice and Bob. To this end, secret keys can be agreed upon using the physicallayer communication channel, leveraging, in particular, the reciprocity and randomness of the UWAC to extract a common key that remains secret to an attacker (Eve). In this paper, we propose a novel solution for the advantagedistillation part of the secret key generation procedure. After channel probing, the advantage of distillation lets Alice and Bob extract a sequence of bits from their own (analog) measurements. We propose an asymmetric advantage-distillation protocol with two novel features: i) the quantizers used by Alice and Bob are derived maximizing the secret key capacity cooperating through a public channel and ii) Alice transmits a correction over a public authenticated side channel. Numerical results prove the effectiveness of our approach, showing that exchanging a few bits of information before information reconciliation allows extracting more secret bits from the channel.

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Section: Advantage-distillation Protocolmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%