Automobile fingerprint VFP security updating method

An update method and fingerprint technology, which are applied to secure communication devices and key distribution, can solve problems such as the risk of being tampered and cracked, and achieve the effects of avoiding easy tampering, facilitating management and control, and achieving randomization.

Pending Publication Date: 2021-11-26
英博超算(南京)科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since VFP is a string of encrypted characters, there is a greater risk of being tampered and cracked if a fixed VFP is used for a long time, so a dynamic encryption method is required

Method used

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  • Automobile fingerprint VFP security updating method
  • Automobile fingerprint VFP security updating method
  • Automobile fingerprint VFP security updating method

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Embodiment Construction

[0029] Embodiments of the present patent are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are only used for explaining the patent, and should not be construed as limiting the patent.

[0030] In the description of this patent, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", The orientation or positional relationship indicated by "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing this patent and simplifying the description, rather than indicating or implying References to devices or elements must have a particular orientation, be constructed, ...

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Abstract

The invention discloses an automobile fingerprint VFP security updating method, which comprises the following steps: performing VFP authentication after an automobile is started, if comparison succeeds, executing a secret key generation and storage process once, and updating secret keys of an automobile side and a server side, thereby updating the VFP generated and stored on the server side when the automobile is off line; and generating seed of said key, randomly collecting a log of the ECU by the security server, and intercepting a segment of characters from the log to serve as the seed for generating the secret key. The logs reported by the ECU every time are different, numerical values obtained during random interception are different, and the numerical values are used as the seed for generating the secret key, so that the automobile fingerprint obtains different values, a pseudo-random phenomenon is avoided, secret keys of all vehicles are completely irrelevant, the same vehicle has different secret key seeds at different moments, the phenomenon that a fixed VFP generated in an encryption mode of a traditional method is easily tampered is avoided, ECU parts changed by abnormal channels are positioned through data comparison, and management and control of a vehicle factory are facilitated.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to a method for safely updating automobile fingerprint VFP. Background technique [0002] ECU, that is, electronic control unit, is a microcomputer controller dedicated to automobiles in terms of use. Like an ordinary computer, it consists of a microprocessor (CPU), memory (ROM, RAM), input / output interface (I / O), analog-to-digital converter (A / D), and large-scale integrated circuits such as shaping and driving. composition. ECU has various purposes, such as controlling the engine, controlling the gearbox, controlling the chassis, and routing messages, etc. These correspond to different types of ECU controllers. Therefore, the number of ECUs on a car is often multiple . The high, medium and low configuration versions of the same model will have corresponding configurations. [0003] In real life, in order to improve the performance of the vehicle, some car owners may install...

Claims

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Application Information

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IPC IPC(8): H04L9/08H04L29/06G06F21/44
CPCH04L9/0891H04L9/0863H04L9/0819G06F21/44H04L63/0876
Inventor 景永年雷海军田锋
Owner 英博超算(南京)科技有限公司
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