Data for: Detection and Defense of Active Attacks for Secret Key Generation Based on Wireless Channels in Static Environment

In static or quasi-static environments, secret key generation (SKG) based on wireless channels is bad random and vulnerable to active attacks. To improve the randomness of the generated secret key, singular value decomposition (SVD) techniques are used to reconstitute equivalent wireless channels in multiple-input multiple-output (MIMO) systems. The eigenvector matrices obtained from the SVD and private pilot, which is generated dynamically from the equivalent wireless channels, are used to detect active attacks by authenticating the sender based on the wireless channels. To defend passive eavesdropping and active attacks, the concept of one time pad is used to generate dynamic private pilot. The proposed SKG scheme based on private pilot and SVD techniques can detect whether the SKG is under man-in-the-middle attack, impersonation attack, signal injection attack, defend passive eavesdropping and active attacks effectively, and obtain higher SKG rate and randomness than the approach via random beam-forming. Theoretical analysis and simulation results demonstrate the above results again.

在静态或准静态环境中，基于无线信道的密钥生成（secret key generation, SKG）存在随机性欠佳且易受主动攻击的缺陷。为提升所生成密钥的随机性，研究人员在多输入多输出（multiple-input multiple-output, MIMO）系统中采用奇异值分解（singular value decomposition, SVD）技术重构等效无线信道。从奇异值分解得到的特征向量矩阵，以及由等效无线信道动态生成的私有导频，可用于基于无线信道对发送方进行身份认证，以此检测主动攻击。为抵御被动窃听与主动攻击，本方案采用一次性密码本（one time pad）的思想生成动态私有导频。本文提出的基于私有导频与奇异值分解技术的密钥生成方案，能够检测密钥生成过程是否遭受中间人攻击、冒充攻击与信号注入攻击，可有效抵御被动窃听与主动攻击，且相较于随机波束成形方法，可获得更高的密钥生成速率与随机性。理论分析与仿真结果进一步验证了上述结论。