Shared secret key generation via carrier frequency offsets

Waqas Aman, Aneeqa Ijaz, M. Mahboob Ur Rahman, Dushanta Nalin K. Jayakody, Haris Pervaiz

Результат исследований: Материалы для книги/типы отчетовМатериалы для конференции


This work presents a novel method to generate secret keys shared between a legitimate node pair (Alice and Bob) to safeguard the communication between them from an unauthorized node (Eve). To this end, we exploit the reciprocal carrier frequency offset (CFO) between the legitimate node pair to extract common randomness out of it to generate shared secret keys. The proposed key generation algorithm involves standard steps: the legitimate nodes exchange binary phase-shift keying (BPSK) signals to perform blind CFO estimation on the received signals, and do equi-probable quantization of the noisy CFO estimates followed by information reconciliation-to distil a shared secret key. Furthermore, guided by the Allan deviation curve, we distinguish between the two frequency-stability regimes-when the randomly time-varying CFO process i) has memory, ii) is memoryless; thereafter, we compute the key generation rate for both regimes. Simulation results show that the key disagreement rate decreases exponentially with increase in the signal to noise ratio of the link between Alice and Bob. Additionally, the decipher probability of Eve decreases as soon as either of the two links observed by the Eve becomes more degraded compared to the link between Alice and Bob.

Язык оригиналаАнглийский
Название основной публикации2019 IEEE 89th Vehicular Technology Conference, VTC Spring 2019 - Proceedings
ИздательInstitute of Electrical and Electronics Engineers Inc.
ISBN (электронное издание)9781728112176
СостояниеОпубликовано - 1 апр 2019
Событие89th IEEE Vehicular Technology Conference, VTC Spring 2019 - Kuala Lumpur, Малайзия
Продолжительность: 28 апр 20191 мая 2019

Серия публикаций

НазваниеIEEE Vehicular Technology Conference
ISSN (печатное издание)1550-2252


Конференция89th IEEE Vehicular Technology Conference, VTC Spring 2019
ГородKuala Lumpur

ASJC Scopus subject areas

  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Applied Mathematics

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