### Аннотация

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 оригинала | Английский |
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Название основной публикации | 2019 IEEE 89th Vehicular Technology Conference, VTC Spring 2019 - Proceedings |

Издатель | Institute of Electrical and Electronics Engineers Inc. |

ISBN (электронное издание) | 9781728112176 |

DOI | |

Состояние | Опубликовано - 1 апр 2019 |

Событие | 89th IEEE Vehicular Technology Conference, VTC Spring 2019 - Kuala Lumpur, Малайзия Продолжительность: 28 апр 2019 → 1 мая 2019 |

### Серия публикаций

Название | IEEE Vehicular Technology Conference |
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Том | 2019-April |

ISSN (печатное издание) | 1550-2252 |

### Конференция

Конференция | 89th IEEE Vehicular Technology Conference, VTC Spring 2019 |
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Страна | Малайзия |

Город | Kuala Lumpur |

Период | 28.4.19 → 1.5.19 |

### ASJC Scopus subject areas

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

## Fingerprint Подробные сведения о темах исследования «Shared secret key generation via carrier frequency offsets». Вместе они формируют уникальный семантический отпечаток (fingerprint).

## Цитировать

*2019 IEEE 89th Vehicular Technology Conference, VTC Spring 2019 - Proceedings*[8746406] (IEEE Vehicular Technology Conference; Том 2019-April). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/VTCSpring.2019.8746406