Physical layer secret key generation scheme used in 60 GHz band

doi:10.1016/S1005-8885(14)60334-4

中国邮电高校学报(英文) ›› 2014, Vol. 21 ›› Issue (5): 76-82.doi: 10.1016/S1005-8885(14)60334-4

Physical layer secret key generation scheme used in 60 GHz band

黄晶晶,蒋挺

北京邮电大学

收稿日期:2014-01-17 修回日期:2014-05-12 出版日期:2014-10-31 发布日期:2014-10-30
通讯作者: 蒋挺 E-mail:jingjinghuangbupt@gmail.com
基金资助:
国家自然科学基金

Physical layer secret key generation scheme used in 60 GHz band

Received:2014-01-17 Revised:2014-05-12 Online:2014-10-31 Published:2014-10-30

摘要/Abstract

摘要： 　The technology of 60 GHz radio is considered promising for providing fast connectivity and gigabit data rate. One of the main challenges to its secure indoor transmission is how to generate secret keys between communication devices. To investigate this issue, The authors develop an efficient mechanism of secret key generation exploiting multipath relative delay based on 60 GHz standard channel models. The comparison of key-mismatch probability between line-of-sight (LOS) and non-line-of-sight (NLOS) environments is considered. Verification of the proposed scheme is conducted. Simulation shows that the number of extracted multipath components proportionally did affect key generation rate and key-mismatch probability. It also indicates that communicating transceivers have a slightly lower key-mismatch probability in NLOS condition than in LOS condition. Moreover, in comparison to the existing approach of using received signal amplitude as a common random source, the mechanism can achieve better performance in key agreement.

关键词: 60 GHz, secret key generation, reciprocity, multipath relative delay

Abstract: 　The technology of 60 GHz radio is considered promising for providing fast connectivity and gigabit data rate. One of the main challenges to its secure indoor transmission is how to generate secret keys between communication devices. To investigate this issue, The authors develop an efficient mechanism of secret key generation exploiting multipath relative delay based on 60 GHz standard channel models. The comparison of key-mismatch probability between line-of-sight (LOS) and non-line-of-sight (NLOS) environments is considered. Verification of the proposed scheme is conducted. Simulation shows that the number of extracted multipath components proportionally did affect key generation rate and key-mismatch probability. It also indicates that communicating transceivers have a slightly lower key-mismatch probability in NLOS condition than in LOS condition. Moreover, in comparison to the existing approach of using received signal amplitude as a common random source, the mechanism can achieve better performance in key agreement.

Key words: 60 GHz, secret key generation, reciprocity, multipath relative delay

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Physical layer secret key generation scheme used in 60 GHz band

Physical layer secret key generation scheme used in 60 GHz band

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