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ECC certificate-based ADS-B data authentication method

A technology of ADS-B and data authentication, which is applied in the direction of public key for secure communication, user identity/authority verification, etc., can solve the problem of not finding similar technologies or related patents, avoid replay attacks and reduce complexity Effect

Inactive Publication Date: 2010-12-15
SICHUAN UNIV +1
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  • Abstract
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Problems solved by technology

[0006] So far in China, no similar technology or related patents have been retrieved

Method used

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  • ECC certificate-based ADS-B data authentication method
  • ECC certificate-based ADS-B data authentication method
  • ECC certificate-based ADS-B data authentication method

Examples

Experimental program
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Effect test

Embodiment Construction

[0043] see figure 1 : Aircraft A needs to download the original ADS-B information, first add the GPS button figure 2 The way shown adds the timestamp, forming a new ADS-B message.

[0044] For new ADS-B messages, press Figure 4 way, through the ECDSA signature algorithm, using the private key of aircraft A to calculate the signature data (r, s), press Figure 5 The method shown is to download the group package.

[0045] The downlinked data can be received by aircraft B and the ground base station.

[0046] The data received by the ground base station is split into ADS-B messages and signature data.

[0047] According to the public key of aircraft A, the ground base station presses Figure 4 way to verify the correctness of the signature data.

[0048] ground base station according to the current time, and image 3 In the way shown, verify the correctness of the GPS time stamp.

[0049] In this way, the verification of the original ADS-B information is realized.

[0...

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Abstract

The invention relates to an ECC certificate-based ADS-B data authentication method and belongs to a method for authenticating airborne data in an automatic dependent surveillance broadcast system in the field of aviation. The method comprises the following steps of: adding a GPS timestamp into original ADS-B sending data to form an ADS-B message, and generating a signature by using an ECC private key; adding signature data into the ADS-B message, encapsulating the signature data into final ADS-B downlink data, and sending the final ADS-B downlink data through an ADS-B communication channel; and dividing ADS-B output data received by a ground station and other airplanes into two parts, wherein one part is ADS-B initial load and GPS time-scale data, and the latter is compared with the current GPS data so as to detect replay attack; and the other part is the signature data. The method can reduce the complexity of distribution and management of the private key, and resists data playback attack to ADS-B systems.

Description

technical field [0001] The invention relates to an authentication technology for airborne data in an automatic dependent surveillance-broadcast (ADS-B: Automatic Dependent Surveillance-Broadcast) system in the aviation field, specifically by adding authentication to the ADS-B information sent at the airborne end information so that the source of that information can be uniquely identified at the receiving end. Background technique [0002] An important idea of ​​ADS-B technology is to actively broadcast its own location periodically, which brings some major security problems, one of which is the counterfeiting of ADS-B data, which has not been well resolved until now. [0003] There are two main ways to counterfeit ADS-B data, one is to achieve data spoofing attacks by fabricating reasonable ADS-B data, and the other is to record normal ADS-B broadcasts, and then send them at a specific time to achieve data replay attacks , the purpose of both is to interfere with the norma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L9/32H04L9/30
Inventor 冯子亮潘卫军王洋
Owner SICHUAN UNIV
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