系统仿真学报 ›› 2017, Vol. 29 ›› Issue (4): 873-879.doi: 10.16182/j.issn1004731x.joss.201704023

• 仿真建模理论与方法 • 上一篇    下一篇

基于RSSI变化趋势的BLE密钥协商方案

张星昊, 黄一才, 郁滨   

  1. 解放军信息工程大学,河南 郑州 450004
  • 收稿日期:2016-05-22 修回日期:2016-08-04 出版日期:2017-04-08 发布日期:2020-06-03
  • 作者简介:张星昊(1992-),男,四川广安,硕士生,研究方向为蓝牙、信息安全技术;黄一才(1985-),男,湖北巴东,硕士,讲师,研究方向为蓝牙、信息安全技术等;郁滨(1964-),男,河南郑州,博士,教授,博导,研究方向为信息安全、无线网络安全技术、视觉密码等。

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

摘要: 基于接收信号强度RSSI (Receive Signal Strength Indicator)的变化趋势,设计了一种轻量级的BLE (Bluetooth Low Energy)密钥协商方案。利用自适应跳频机制增强信道特征的变化趋势,依据相干时间内BLE信道特征的随机性和相关性,对接收信号的RSSI进行测量,最终通过计算其变化趋势实现实时的密钥协商。实验结果表明,该方案在保证随机性的前提下,具有较高的密钥生成速率,适用于资源受限的应用场景。

关键词: BLE, 相干时间, RSSI, 跳频, 密钥协商

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

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