西安电子科技大学学报 ›› 2019, Vol. 46 ›› Issue (1): 8-13.doi: 10.19665/j.issn1001-2400.2019.01.002

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采用k均值聚类的物理层密钥生成方案

刘景美,韩庆庆(),沈志威,刘景伟   

  1. 西安电子科技大学 综合业务网理论及关键技术国家重点实验室,陕西 西安 710071
  • 收稿日期:2018-01-18 出版日期:2019-02-20 发布日期:2019-03-05
  • 通讯作者: 韩庆庆
  • 作者简介:刘景美(1979-),女,副教授,博士,E-mail: jmliu@mail.xidian.edu.cn
  • 基金资助:
    教育部联合基金(6141A02022338)

Method for Secret key generation using k-means clustering

LIU Jingmei,HAN Qingqing(),SHEN Zhiwei,LIU Jingwei   

  1. State Key Lab. of Integrated Service Networks, Xidian Univ., Xi’an 710071, China
  • Received:2018-01-18 Online:2019-02-20 Published:2019-03-05
  • Contact: Qingqing HAN

摘要:

传统的密钥生成算法没有同时利用幅值及相位两方面的信息,对信道信息利用不充分。针对此问题,提出了一种使用k均值聚类进行密钥生成的方案,该方法可以充分利用多个维度的信息,提高生成密钥的一致性。在密钥生成过程中,双方通过传输聚类中心的位置来进行对测量值进行分类,不会造成密钥信息的泄露。为了更好地提高密钥的一致性与随机性,结合随机导频系数和二维补偿方法,又提出了一种k均值二维补偿密钥生成方案。仿真结果表明,相比于其他密钥生成方法,两个方案在密钥的一致性与随机性方面性能更优。

关键词: k均值, 聚类, 密钥生成, 物理层安全, 二维补偿

Abstract:

Due to the fact that traditional key generation algorithms cannot make full use of the channel information, a key generation method based on k-means clustering is proposed. By using this method, both phase information and amplitude information can be fully utilized, and the consistency of the key can be improved effectively. In the key generation process, the two sides can classify the measured values by transferring the location of the cluster center, and will not cause leakage of key information. In order to improve the performance further, an improved method named k-means two dimensional compensation is proposed which combines the random pilot and two-dimensional compensation. Simulation result shows, compared with other key generation methods, the two schemes proposed in this paper can effectively improve the consistency and randomness of the secret key.

Key words: k-means, clustering, key generation, physical layer security, two dimensional compensation

中图分类号: 

  • TN918.8 +2