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Cloud storage method and system for file
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A cloud storage and file storage technology, applied in the field of cloud storage, can solve the problems of slow storage efficiency and poor data confidentiality, and achieve the effect of improving security and storage efficiency
Inactive Publication Date: 2015-09-09
ZHEJIANG GONGSHANG UNIVERSITY
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[0006] In view of this, the present invention provides a method and system for storing files in the cloud to solve the technical problems of slow storage efficiency and poor data confidentiality in the prior art
Method used
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Embodiment 1
[0032] Such as figure 1 Shown is a flowchart of a method for storing files in the cloud provided by an embodiment of the present invention, and the method includes the following steps:
[0033] Step S101, cutting the file to be stored into blocks to obtain multiple plaintext blocks.
[0034] In the embodiment of the present invention, the file to be processed is first cut into blocks, and the file to be processed is cut into multiple plaintext blocks. The size of the plaintext block can be set according to the needs of actual applications, and is not limited here.
[0035] Step S102, performing deduplication on the plaintext block.
[0036] In the embodiment of the present invention, since the files stored in the cloud may have multiple identical plaintext blocks, and storing multiple identical plaintext blocks will reduce the efficiency of cloud storage, it is necessary to deduplicate the plaintext blocks. The deduplication of the plaintext block to the plaintext block is s...
Embodiment 2
[0078] Such as image 3 Shown is the structure diagram of the cloud storage file system provided by the embodiment of the present invention. For the convenience of description, only the parts related to the embodiment of the present invention are shown, including:
[0079] The plaintext block obtaining unit 301 is configured to cut the file to be stored into blocks, and obtain multiple plaintext blocks.
[0080] In the embodiment of the present invention, the file to be processed is first cut into blocks, and the file to be processed is cut into multiple plaintext blocks. The size of the plaintext block can be set according to the needs of actual applications, and is not limited here.
[0081] The plaintext block deduplication unit 302 is configured to deduplicate the plaintext blocks obtained by the plaintext block acquisition unit 301 .
[0082] In the embodiment of the present invention, since the file stored in the cloud may have multiple identical plaintext bl...
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Abstract
The invention is applied to the field of cloud storage, and provides a cloud storage method and system for a file. The method comprises the following steps: segmenting a file to be stored to obtain multiple plaintext blocks; performing plaintext block de-weighting on the plaintext blocks; encrypting the plaintext blocks subjected to the plaintext block de-weighting into cryptograph blocks; performing cryptograph block de-weighting on the cryptograph blocks; and storing the cryptograph blocks subjected to the de-weighting on multiple cloud storage servers through a redundancy algorithm. According to the embodiments of the invention, the multiple plaintext blocks are obtained through segmenting the file to be stored, the plaintext block de-weighting is performed on the plaintext blocks, the plaintext blocks subjected to the plaintext block de-weighting are encrypted into cryptograph blocks, the cryptograph block de-weighting is performed on the cryptograph blocks, and the cryptograph blocks are stored on the multiple cloud storage servers through the redundancy algorithm, such that the storage efficiency of cloud storage is improved through segmentation and de-weighing, and the cloud storage security is enhanced through encryption.
Description
technical field [0001] The invention belongs to the field of cloud storage, and in particular relates to a method and system for storing files in the cloud. Background technique [0002] Cloud storage technology is a new concept extended and developed from the concept of cloud computing in recent years. Cloud storage is mainly used for enterprise and personal data backup, which can reduce users' investment in data storage. Although cloud storage technology brings cheap storage services, the security and reliability of cloud storage make many enterprise users and individual users daunted by cloud storage technology. According to relevant statistics, the current domestic first-tier cloud storage service providers add new user data every day to the unit level of PB. It can be seen that users' demand for cloud storage is very huge. The future hidden dangers of cloud storage are worth thinking about: [0003] 1. Data confidentiality is poor. Most of the user’s data and files e...
Claims
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