Ciphertext image deduplication method used in cloud environment and cloud server

A cloud server, cloud environment technology, applied in still image data retrieval, instruments, special data processing applications, etc., can solve the problems of user file loss, low deduplication rate, etc., to improve efficiency, reduce the amount of calculation, and reduce image storage. amount of effect

Active Publication Date: 2018-07-27
XIDIAN UNIV
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  • Description
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  • Application Information

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Problems solved by technology

[0003] To sum up, the problem existing in the existing technology is that the image deduplication method in the cloud environment is still under research, and the problem existing in the existing tec

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  • Ciphertext image deduplication method used in cloud environment and cloud server
  • Ciphertext image deduplication method used in cloud environment and cloud server
  • Ciphertext image deduplication method used in cloud environment and cloud server

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Embodiment Construction

[0028] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0029] The invention realizes image deduplication while ensuring the security of image information. Considering resource-constrained mobile devices, efficient security deduplication technology has attracted much attention. Researching this direction has important significance and good application value for the research of image data.

[0030] The application principle of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0031] Such as figure 1As shown, the ciphertext image deduplication method under the safe cloud environment provided by the embodiment of the present ...

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Abstract

The invention belongs to the technical field of image deduplication and discloses a ciphertext image deduplication method used in the cloud environment and a cloud server. An image in a database is partitioned, characteristic values of image blocks are calculated, and the image blocks and the characteristic values are encrypted with any one rapid symmetrical encryption algorithm; the encrypted image blocks, a sequence matrix of the image blocks and the encrypted characteristic values are uploaded to the cloud server, and ciphertext image deduplication operation is executed by the server; if other authorized users upload the image again, the encrypted image blocks and the encrypted characteristic values are required to be sent to the cloud server, the cloud server performs retrieval operation in an encrypted image library, and storage of the image blocks or deduplication is decided according to the fact that whether the same characteristic values of the image blocks or the characteristic values of the image blocks in a set threshold value range exist. On the basis of conventional image deduplication, safe deduplication of ciphertext images is realized, deduplication of different images is realized, the expected safety purpose is achieved, and besides, the storage efficiency is improved under the condition that the accuracy is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of image deduplication, and in particular relates to a method for deduplication of ciphertext images in a safe cloud environment and a cloud server. Background technique [0002] At present, the existing technologies commonly used in the industry are as follows: With the popularization of smart terminal devices, the rapid development of mobile Internet and social networks, and the gradual maturity of large-scale storage and processing technologies, the data generated by enterprise users and individual users in recent years The volume is growing exponentially, and research shows that by 2020, the amount of data we will generate will exceed 40ZB. Among these data, multimedia data occupies a large proportion, and multimedia data storage overhead is high and processing is difficult. Therefore, how to manage massive multimedia data has become a serious problem for computer systems. Research on multimedia databa...

Claims

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Application Information

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IPC IPC(8): G06F17/30H04L29/06H04L29/08
CPCH04L63/0435H04L67/06G06F16/1752G06F16/50
Inventor 陈晓峰尚晶张志为陶晓玲王勇
Owner XIDIAN UNIV
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