Method and device for detecting relay attack based on communication channel
A communication channel and channel technology, applied in the field of communication, can solve problems such as poor security of PEPS system, and achieve the effect of improving security
Active Publication Date: 2021-06-15
HUAWEI TECH CO LTD
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Problems solved by technology
[0004] This application provides a method and device for detecting relay attacks based on communication channels to solve the problem of poor security of the existing PEPS system
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[0047] The technical solutions of the present application will be clearly described below with reference to the accompanying drawings in the present application.
[0048]The terms used in the following embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application. As used in the specification and appended claims of this application, the singular expressions "a", "an", "said", "above", "the" and "this" are intended to also Plural expressions are included unless the context clearly indicates otherwise. It should also be understood that although the terms first, second, etc. may be used in the following embodiments to describe a certain type of object, the object should not be limited to these terms. These terms are only used to distinguish specific objects of that class. For example, the terms first, second, etc. may be used in the following embodiments to describe channel identifiers, ...
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The present application discloses a method and device for detecting a relay attack based on a communication channel, wherein the vehicle-mounted device and the first device are connected through a first communication channel and a second communication channel, and the first communication channel and the second communication channel are independent of each other. The vehicle-mounted device receives the first identification from the first device through the first communication channel, and the type of the communication channel identified by the first identification is the same as that of the second communication channel. Then, the vehicle-mounted device determines the channel identifier of the second communication channel. Since the communication channel identified by the first identification is of the same type as the second communication channel, when the channel identification of the second communication channel matches the first identification, it means that the second communication channel is the same as the communication channel identified by the first identification. A communication channel, which in turn shows that there is no relay attack. Based on this, when the distance between the vehicle-mounted device and the first device is within a preset distance, the vehicle-mounted device may open the door of the vehicle in response to the service instruction.
Description
technical field [0001] The present application relates to the field of communication technologies, and in particular to a method and device for detecting relay attacks based on communication channels. Background technique [0002] A passive entry passive start (PEPS) system is a common system currently used in automobiles. The PEPS system includes an electronic key device and a vehicle-mounted device, wherein the electronic key device can be carried by a user, and the vehicle-mounted device can be built into a car. In practical application, the vehicle-mounted device sends a service request to the electronic key device, and the electronic key device generates a service instruction in response to the service request, and the service instruction carries the authentication data generated by the key. After the vehicle-mounted device receives the business instruction from the electronic key device and the verification key passes, and determines that the distance between the elec...
Claims
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IPC IPC(8): G07C9/00H04W12/122B60R25/20H04W12/121
CPCG07C9/00309G07C9/00896B60R25/2018G07C2209/63G07C2209/64B60R2325/101B60R2325/108B60R2325/207B60R2325/205B60R2325/202H04W12/122
Inventor 王思善
Owner HUAWEI TECH CO LTD