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A data encryption and decryption method and device

A data encryption and data decryption technology, applied in the computer field, can solve problems such as engineering data leakage

Active Publication Date: 2021-07-30
BEIJING WATERTEK INFORMATION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, because engineering data can be used for reverse engineering and software cracking; or for some modeling software, the model construction format can be deduced through engineering data, resulting in the leakage of engineering data

Method used

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  • A data encryption and decryption method and device
  • A data encryption and decryption method and device
  • A data encryption and decryption method and device

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Embodiment Construction

[0034] In order to make the purpose, technical solution and advantages of the present invention more clear, the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined arbitrarily with each other.

[0035] The steps shown in the flowcharts of the figures may be performed in a computer system, such as a set of computer-executable instructions. Also, although a logical order is shown in the flowcharts, in some cases the steps shown or described may be performed in an order different from that shown or described herein.

[0036] figure 1 The flowchart of the data encryption method provided by the embodiment of the present invention, such as figure 1 As shown, the data encryption method provided by the embodiment of the present invention includes:

[0037] S101: Group the...

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Abstract

The invention discloses a data encryption and decryption method and device. The data encryption method includes: grouping the data to be saved by bytes, each M bytes is a group, and M is a positive integer greater than 1; for each group of bytes Segmentation is performed bit by bit, every N bit is a segmented data, and N is a positive integer greater than 1 and less than 8; according to the encryption key, each segmented data obtained after each group of bytes is segmented is converted into Corresponding to an encrypted character, the encrypted saved data is obtained. The data encryption and decryption method and device disclosed in the present invention store the engineering data created by the software in an encrypted manner, so that the engineering data to be saved cannot be read, and the software is prevented from being reversely deciphered.

Description

technical field [0001] The invention relates to computer technology, in particular to a data encryption and decryption method and device. Background technique [0002] After most software creates a project, it generally saves project data in binary or Extensible Markup Language (XML) format, and even saves it in text format. However, because engineering data can be used for reverse engineering and software cracking; or for some modeling software, the model construction format can be deduced through engineering data, resulting in leakage of engineering data. Contents of the invention [0003] In order to solve the above technical problems, the present invention provides a data encryption and decryption method and device, which store the engineering data created by the software in an encrypted manner to prevent the software from being reversely deciphered. [0004] In order to achieve the purpose of the present invention, in a first aspect, the present invention provides a ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F21/14G06F21/60
CPCG06F21/14G06F21/602
Inventor 彭时涛
Owner BEIJING WATERTEK INFORMATION TECH
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