Journal of System Simulation ›› 2017, Vol. 29 ›› Issue (4): 873-879.doi: 10.16182/j.issn1004731x.joss.201704023

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BLE Key Agreement Scheme Based on RSSI Variation Trend

Zhang Xinghao, Huang Yicai, Yu Bin   

  1. PLA Information Engineering University, Zhengzhou 450004, China
  • Received:2016-05-22 Revised:2016-08-04 Online:2017-04-08 Published:2020-06-03

Abstract: Based on the variation trend of received signal strength index, a lightweight BLE key agreement scheme was proposed. Using adaptive frequency hopping, the variation of channel characteristics was strengthened. According to the randomness and reciprocity of BLE channel characteristics in coherence time, the RSSI of BLE signal was measured. And the real-time key was produced by calculating the variation trend. On the basis of experiments results, the randomness of key can be ensured, and a high key generation rate has been reached at the same time. The scheme can be applied to resource-constrained applications.

Key words: BLE, coherence time, RSSI, frequency hopping, key agreement

CLC Number: