网络与信息安全学报 ›› 2018, Vol. 4 ›› Issue (8): 31-38.doi: 10.11959/j.issn.2096-109x.2018055

• 论文 • 上一篇    下一篇

基于物理层密钥的消息加密和认证机制

李兴志(),金梁,钟州,楼洋明   

  1. 国家数字交换系统工程技术研究中心,河南 郑州 450002
  • 修回日期:2018-07-02 出版日期:2018-08-01 发布日期:2018-10-12
  • 作者简介:李兴志(1994-),男,山东泰安人,国家数字交换系统工程技术研究中心硕士生,主要研究方向为物理层安全、无线通信安全。|金梁(1969-),男,北京人,国家数字交换系统工程技术研究中心教授、博士生导师,主要研究方向为物理层安全、通信信号处理和阵列信号处理。|钟州(1982-),男,吉林公主岭人,国家数字交换系统工程技术研究中心讲师,主要研究方向为物理层安全。|楼洋明(1991-),男,浙江义乌人,主要研究方向为物理层安全。
  • 基金资助:
    国家自然科学基金资助项目(61601514)

Message encryption and authentication mechanism based on wireless physical layer key

Xingzhi,JINLiang LI(),Zhou ZHONG,Yangming LOU   

  1. National Digital Switching System Engineering &Technological R&D Center,Zhengzhou 450002,China
  • Revised:2018-07-02 Online:2018-08-01 Published:2018-10-12
  • Supported by:
    The National Natural Science Foundation of China(61601514)

摘要:

针对传统高层消息认证存在密钥泄露隐患、物理层消息认证无法防止被动窃听的问题,提出一种基于无线物理层特征的消息加密和认证机制。通过提取无线信道特征生成物理层密钥,并与身份密钥结合生成种子密钥;随后根据提取的种子通过密钥流生成器产生密钥流对消息进行加解密,对传输数据的私密性进行保护;最后接收方通过 CRC 校验结果对接收消息的真实性、完整性进行认证。仿真结果表明,该方法在防止被动窃听和主动攻击上具有更好的性能,密钥流随机性显著提高,认证漏检率降低约12。

关键词: 物理层密钥, CRC校验, 流密码, 消息认证

Abstract:

In order to solve the problem of hidden key leakage in traditional high-level message authentication and passive eavesdropping in physical layer message authentication,a message encryption and authentication mechanism based on the characteristics of wireless physical layer was proposed.By extracting the characteristics of the wireless channel,the physical layer key was generated and the seed key was generated by combining the identity key.The key stream generator then generated the key stream to decrypt the message according to the extracted seed,protects the privacy of the transmitted data,and the final receiver authenticated the authenticity and integrity of the received message through the CRC verification result.Simulation results show that the proposed method has better performance in preventing passive eavesdropping and active attack,and the randomness of key stream is greatly improved and the rate of authentication leak detection is reduced by half.

Key words: physical layer key, CRC check, stream cipher, message authentication

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