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    Real-time and protocol-aware reactive jamming in wireless networks
    1.
    发明授权
    Real-time and protocol-aware reactive jamming in wireless networks 有权
    无线网络中的实时和协议感知反应干扰

    公开(公告)号：US09531497B2

    公开(公告)日：2016-12-27

    申请号：US14290545

    申请日：2014-05-29

    Applicant: Drexel University

    Inventor： Boris Shishkin ,  Danh H. Nguyen ,  Cem Sahin ,  Kapil R. Dandekar ,  Nagarajan Kandasamy ,  David J. Dorsey

    IPC: H04B17/00 ,  H04K3/00

    CPC classification number: H04K3/80 ,  H04K3/41 ,  H04K3/45 ,  H04K3/46 ,  H04K3/94 ,  H04K2203/18

    Abstract: A real-time capable, protocol-aware, reactive jammer using GNU Radio and the USRP N210 software-defined radio (SDR) platform detects in-flight packets of known wireless standards and reacts to jam them—within 80 ns of detecting the signal. A reactive jamming device is achieved using low-cost, readily available hardware. The real-time reactive jamming device includes a real-time signal detector that detects an event in received packets in the wireless network, a reactive jamming device that sends a triggering signal when the event is detected, and a jamming generator responsive to the triggering signal to generate a jamming signal that has a user-defined delay so as to enable jamming of specific locations in received packets in the wireless network. The effects of three types of jamming on WiFi (802.11g) and mobile WiMAX (802.16e) networks are demonstrated and jamming performances are quantified by measuring the network throughput using the iperf software tool.

    Abstract translation: 使用GNU Radio和USRP N210软件定义无线电（SDR）平台的实时功能，协议感知，反应干扰器检测已知无线标准的飞行包中的数据，并在发现信号的80 ns内对其进行响应。 使用低成本，易于获得的硬件实现无功干扰装置。 实时无功干扰装置包括检测无线网络中接收到的分组中的事件的实时信号检测器，当检测到事件时发送触发信号的无功干扰装置，以及响应于触发信号的干扰发生器 以产生具有用户定义的延迟的干扰信号，以便能够阻止无线网络中接收的分组中的特定位置。 演示了三种干扰在WiFi（802.11g）和移动WiMAX（802.16e）网络上的影响，并通过使用iperf软件工具测量网络吞吐量来量化干扰性能。

    Symmetric Encryption Key Generation Using Wireless Physical Layer Information Without Sharing Any Information Pertinent To The Key
    2.
    发明申请
    Symmetric Encryption Key Generation Using Wireless Physical Layer Information Without Sharing Any Information Pertinent To The Key 审中-公开

    公开(公告)号：US20200244453A1

    公开(公告)日：2020-07-30

    申请号：US16851182

    申请日：2020-04-17

    Applicant: Drexel University

    Inventor： Cem Sahin ,  Kapil R. Dandekar

    IPC: H04L9/08 ,  H04L9/14

    Abstract: Symmetric keys are generated by an algorithm that uses the randomness from the wireless PHY layer to extract the keys. When used with reconfigurable antennas, the algorithm yields longer keys. By using the randomness from the wireless PITY layer, the algorithm solves the issue of secure information leakage to the wireless channel during key establishment phase. The algorithm also omits transmitting anything secure during this phase and prevents any intruder from obtaining information related to the key. This approach can automatically secure the communications over open wireless networks (those without authentication or encryption) or closed wireless networks using other methods of authentication.

    Symmetric Encryption Key Generation Using Wireless Physical Layer Information Without Sharing Any Information Pertinent To The Key
    8.
    发明申请
    Symmetric Encryption Key Generation Using Wireless Physical Layer Information Without Sharing Any Information Pertinent To The Key 有权

    公开(公告)号：US20220345306A1

    公开(公告)日：2022-10-27

    申请号：US17720610

    申请日：2022-04-14

    Applicant: Drexel University

    Inventor： Cem Sahin ,  Kapil R. Dandekar

    IPC: H04L9/08 ,  H04L9/14

    Abstract: Symmetric keys are generated by an algorithm that uses the randomness from the wireless PHY layer to extract the keys. When used with reconfigurable antennas, the algorithm yields longer keys. By using the randomness from the wireless PHY layer, the algorithm solves the issue of secure information leakage to the wireless channel during key establishment phase. The algorithm also omits transmitting anything secure during this phase and prevents any intruder from obtaining information related to the key. This approach can automatically secure the communications over open wireless networks (those without authentication or encryption) or closed wireless networks using other methods of authentication.

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