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Image data encryption method and system and image data decryption method and system

A technology of image data and encryption method, which is applied in the direction of image communication, electrical components, etc., can solve the problem that image data transmission is easy to be illegally stolen and tampered with, and achieve the effect that it is difficult to read and tamper, and increase the difficulty

Inactive Publication Date: 2013-11-27
GCI SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Based on this, it is necessary to provide an image data encryption method, system, and decryption method and system for the above-mentioned problem that the image data is easily stolen and tampered with in the transmission.

Method used

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  • Image data encryption method and system and image data decryption method and system
  • Image data encryption method and system and image data decryption method and system
  • Image data encryption method and system and image data decryption method and system

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Embodiment Construction

[0028] see figure 1 , figure 1 It is a schematic flowchart of the first embodiment of the image data encryption method of the present invention.

[0029] The encryption method for the image data of this embodiment includes the following steps:

[0030] Step 101 , group the image data to be transmitted, and perform pseudo-random reorganization of the grouped image data in groups.

[0031] Step 102, encrypting the recombined image data to form ciphertext data.

[0032] In the image data encryption method described in this embodiment, the image data to be transmitted is firstly grouped, then the grouped image data is pseudo-randomly reorganized in groups, and finally the reorganized image data is encrypted to form ciphertext data , Pseudo-random reorganization of image data before encryption to form ciphertext data can increase the difficulty of illegally reading the image by the stealing party, and the image data is not easy to be read and tampered with.

[0033] Wherein, fo...

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Abstract

The invention discloses an image data encryption method and system and an image data decryption method and system. The encryption method includes the steps of conducting data grouping on image data to be transmitted, conducting pseudorandom reassembling on the grouped image data, and conducting encryption on the reassembled image data to obtain cryptograph data. The decryption method includes the steps of obtaining the cryptograph data, conducting decryption on the cryptograph data through a decryption key corresponding to an encryption end to form plaintext data, conducting reverse pseudorandom reassembling on the plaintext data to form multiple sets of data according to the grouping rule of the encryption end and the pseudorandom reassembly rule, and conducting splitting and re-ranking on the multiple sets of data to form the image data. According to the image data encryption method and system and the image data decryption method and system, the difficulty in illegally reading images for the eavesdropping part can be increased, and the image data can not be easily read or tampered.

Description

technical field [0001] The present invention relates to the technical field of image data processing, in particular to an image data encryption method and system, and a decryption method and system. Background technique [0002] At present, with the rapid development of Internet technology, people often transmit image data through the network. Image data contains a larger amount of information than traditional text information, and is a main way for people to communicate daily. However, the existing technology often does not encrypt image data or the encryption is not perfect enough, so that the image data transmitted through the network can easily be illegally stolen, tampered with, and then copied or spread. information security in the field. SUMMARY OF THE INVENTION [0003] Based on this, it is necessary to provide an encryption method and system for image data, and a decryption method and system for the above-mentioned problem of being easily stolen and tampered with...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N1/32
Inventor 陈凡清林凡黄建青
Owner GCI SCI & TECH
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