Dynamic generation method for access key of automobile electronic information card

An electronic information card and dynamic generation technology, applied in key distribution, can solve problems such as ineffective support of vehicle speed, difficulty in unified update, and insecure information, so as to improve reading and writing speed and efficiency, realize dynamics, and improve safety effect

Inactive Publication Date: 2012-12-19
天津广行科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This new technology makes it easier for vehicles' owners to store their keys on an electronics tag (tag) instead of storing them separately at each doorstep. Its technical effect includes improved safety by generating securely-generated access keys that are faster than traditional methods like paper tickets, while also being more efficient due to its ability to dynamically generate different types of access keys based upon factors such as time stamps or location from where they were collected.

Problems solved by technology

This patented problem addressed in the patents relates to improving the efficiency of accessing keys within a car's electronic identification cards without compromising their integrity during normal usage.

Method used

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  • Dynamic generation method for access key of automobile electronic information card
  • Dynamic generation method for access key of automobile electronic information card
  • Dynamic generation method for access key of automobile electronic information card

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Embodiment Construction

[0044] The present invention will be described in further detail below through specific embodiments and accompanying drawings. The following embodiments are only descriptive, not restrictive, and cannot limit the protection scope of the present invention.

[0045] The vehicle electronic information card access key dynamic generation method of the present invention is composed of three main core algorithms, which are key seed generation algorithm, access key generation algorithm and EPC code random algorithm respectively.

[0046] Key Seed Generation Algorithm

[0047]Let p, q be two large prime numbers satisfying p≡q≡3mod4, define n=pq, n is a Blum integer. QR(n) represents the set of quadratic residues modulo n, that is, QR(n)={x 2 modn: x and n are mutually prime}. Choose another random integer s that is relatively prime to n -1 , select the current time (a value in milliseconds) that meets the criteria. Seed the access key: This guarantees that s 0 ∈QR(n).

[0048] Acc

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Abstract

The invention discloses a dynamic generation method for an access key of an automobile electronic information card. The automobile electronic information card comprises a Reserved data storage area, an EPC (electronic product code) data storage area, a TID (terminal identification) storage area and a USER storage area. Based on RFID (radio frequency identification) technology, initialization is realized, the access key and an EPC random code are generated dynamically, and access key updates are accessed. The method includes the steps: initializing the automobile electronic information card, dynamically generating the access key of the automobile electronic information card, and updating the access key. Compared with the prior art, the access key of the automobile electronic information card is simple in structure, scientific and reasonable in design and low in manufacturing cost, doesn't need to be stored in a reader, an acquisition device or a data center, and accordingly security of data in the automobile electronic information card is improved, read-write speed and efficiency of the reader are improved, dynamics of access key generation is achieved, and a safe and reliable dynamic generation system for the access key of the automobile electronic information card is provided.

Description

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Claims

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Application Information

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Owner 天津广行科技有限公司
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