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File safety storage method based on multiple network nodes

A secure storage and multi-node technology, which is applied in the field of secure storage of files based on network multi-nodes, can solve problems such as insufficient security and large redundancy, and achieve the effect of resisting network hacking and internal leaks

Inactive Publication Date: 2012-09-19
NANJING COMM INST OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide a method for safe storage of files based on network multi-nodes, thereby solving the problem of insufficient security or excessive redundancy in existing network file storage. Under the condition of ensuring the minimum redundancy, A file segmentation storage algorithm with maximum security is given

Method used

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  • File safety storage method based on multiple network nodes
  • File safety storage method based on multiple network nodes
  • File safety storage method based on multiple network nodes

Examples

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Embodiment

[0049] Existing conditions: There are N remote storage devices and a file that needs to be stored confidentially. The specific implementation method is as follows (the following examples are based on N=5):

[0050] 1. Use existing compression software such as ZIP to compress the file by setting a password, divide the file into S=N(N-1) / 2 pieces, and name them Z(1) and Z(2) respectively ,..., Z(S), when N=5, the total number of slices for file division is S=5(5-1) / 2=10 slices, numbered as Z(1) Z(1), Z(2 ),..., Z(10);

[0051] 2. Store file slices in N nodes, each node stores N-1 slices, and make one file slice the same between any two nodes, and each file slice appears in each node and only appears twice. The following algorithms can be used to group file slices, but not limited to the following algorithms. Taking C language as an example, the number of storage nodes is set to 5:

[0052] main()

[0053] {

[0054] #define N 5 / / Define the number of remote storage devices...

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Abstract

The invention relates to a file safety storage method based on multiple network nodes, which comprises the following steps of: acquiring the number N of possessed storage nodes which are in mutual independence, wherein mutual independence means that other nodes cannot be leaked or damaged due to leak or damage of any one node; encrypting an original file; splitting an encrypted file into (N-1) / 2 file pieces according to the number N of the storage nodes, wherein the size of each piece is arbitrary; numbering each file piece; and storing the file pieces in N nodes, wherein (N-1) pieces are stored in each node, one same file piece is stored between any two nodes, each file piece appears twice in all nodes, namely, the storage quantity of each node is twice the size of the original file, and code distance between file numbers stored in any two nodes is 1. According to the file safety storage method, the problem of insufficient safety or excessive redundancy in traditional network file storage is solved, and a file split and storage algorithm with maximum safety degree is given under the condition that the minimum redundancy is guaranteed.

Description

technical field [0001] The invention relates to a method for safely storing files based on network multi-nodes. Background technique [0002] The storage method of existing confidential files is mainly realized by means of encrypted storage. If stored in this way, once the data in the storage node is stolen, the data will be very likely to be confidential; if it is divided into n pieces, in n nodes If they are stored separately, once any node fails for any reason, the data cannot be recovered; if multiple copies of each piece are copied, the total storage capacity will be increased on the one hand, and on the other hand, if the data of several nodes is obtained, then It is likely to lead to confidentiality of files and reduce security. Contents of the invention [0003] The purpose of the present invention is to provide a method for safe storage of files based on network multi-nodes, thereby solving the problem of insufficient security or excessive redundancy in existing ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/08H04L9/00
Inventor 吴昊陆青蒋志航代飞陈宏欣冯小辉
Owner NANJING COMM INST OF TECH
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