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Power battery traceability management code encryption method based on improved AES algorithm

A power battery and traceability management technology, applied in the field of coding, can solve problems such as low security and small space of DES encryption algorithm, and achieve the effect of protecting information, improving confidentiality and privacy, and improving encryption effect

Inactive Publication Date: 2020-06-09
YANSHAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the DES encryption algorithm has small space and low security. The traditional AES encryption algorithm has security problems such as fixed initial keys, mutually derivable keys, and definite key space.

Method used

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  • Power battery traceability management code encryption method based on improved AES algorithm
  • Power battery traceability management code encryption method based on improved AES algorithm
  • Power battery traceability management code encryption method based on improved AES algorithm

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Embodiment Construction

[0046] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in more detail:

[0047] A power battery traceability management encoding encryption method based on the improved AES algorithm, such as image 3 As shown, its content includes the following steps:

[0048] The first step is to read the filing information of the power battery in the power battery life cycle management system as plaintext information input, and group the plaintext information. During the grouping process, each 16 bytes or 128 bits is a group, which is divided into Group g, where g is the number of groups that are divisible by an integer; if there is less than one group, that is, less than 16 bytes of plaintext information bytes, add N bytes, where N is a positive integer greater than or equal to 1 and less than 16, making up 16 bytes. Get a new group, and get the plaintext information of group g+1 in total;

[0049] Divide each group of plaintext i...

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Abstract

The invention provides a power battery traceability management code encryption method based on an improved AES algorithm. The power battery traceability management code encryption method comprises thefollowing steps: step 1, grouping plaintext information; step 2, generating an initial key by using a two-dimensional composite chaotic sequence, and performing AES algorithm improved encryption; step 3, carrying out Base64 secondary encryption; step 4, carrying out QR coding; step 5, conducting a decryption process. According to the invention, a two-dimensional composite chaotic sequence is combined with a traditional AES encryption algorithm, and an improved AES encryption algorithm is provided. One group initial key correspondingly encrypts one piece of QR code plaintext information, the security problems of fixed initial secret keys, mutual derivation among the secret keys and secret key space determination in a traditional AES encryption algorithm are effectively eliminated, the decryption difficulty is increased, the confidentiality and privacy of the QR code information are greatly improved, the information of a power battery is effectively protected, data sharing among power battery maintenance, fault analysis, equipment accessories and battery storage is achieved, and scientific and refined management is achieved.

Description

technical field [0001] The invention relates to an encoding and encryption method for traceability management of a power battery based on an improved AES algorithm, and belongs to the technical field of encoding. Background technique [0002] The power battery is the most important part of the new energy vehicle and its basic source of power. In 2018, the total global power battery shipments were 92.5GW h, a year-on-year increase of 45.8%. The effective life of electric passenger car batteries is between 4 and 6 years, and the effective life of electric commercial vehicle batteries is only about 3 years. my country expects that the scale of decommissioning power batteries will exceed the 10GWh mark in 2020. Although decommissioned power batteries cannot meet the performance requirements of new energy vehicles, they can still shine in other fields. Therefore, it is imminent to design a battery life cycle traceability management system. The power battery life cycle traceabi...

Claims

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Application Information

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IPC IPC(8): H04L9/06H04L9/00H04N1/32H04N1/44
CPCH04L9/001H04L9/0631H04N1/32272H04N1/4486Y02D30/50
Inventor 金梅张少阔张子豪李媛媛郑耀东雷博刘博孙胜春
Owner YANSHAN UNIV
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