| 张启星,付敬奇.基于信道特征提取的物理层安全密钥生成方法[J].电子测量与仪器学报,2019,33(1):16-22 |
| 基于信道特征提取的物理层安全密钥生成方法 |
| Physical layer security key generation method based on channel feature extraction |
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| DOI： |
| 中文关键词: 无线传感器网络安全 物理层密钥 特征提取 信道估计 |
| 英文关键词:wireless sensor network security physical layer key feature extraction channel estimation |
| 基金项目:上海市科委（17511107002）资助项目 |
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| 中文摘要: |
| 物理层密钥具有降低密钥分发、更新和维护的难度的特点,针对无线传感器网络中节点传输信息易遭受窃听攻击的问题,基于物理层安全中的“一次一密”理论,提出了一种物理层密钥生成方法,主要包含信道估计、特征提取、密钥生成与协商。在半双工通信模式下,根据信道估计阶段相干时间的长短,对训练序列的长度进行动态调整,提高信道估计的一致性。仿真试验与对比分析结果表明,窃听节点生成密钥与合法节点生成密钥的一致性始终维持在较低水平,降低了遭受窃听攻击的风险。 |
| 英文摘要: |
| The physical layer key has the characteristics of reducing the difficulty of key distribution, updating and maintenance. This paper aims at the problem that the node transmission information is vulnerable to eavesdropping on wireless sensor networks. Based on the “one time secret” theory in physical layer security, a physical layer key generation method is proposed, which mainly includes channel estimation and characteristics. Extraction, key generation and negotiation. In the half duplex communication mode, according to the length of coherent time in the channel estimation stage, the length of the training sequence is dynamically adjusted to improve the consistency of channel estimation. The simulation test and comparison analysis show that the consistency of the eavesdropping node generation key and the legitimate node generation key remains low, it reduces the risk of eavesdropping attack. |
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