CN106657267A - Cloud storage system based on edge server - Google Patents
Cloud storage system based on edge server Download PDFInfo
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- CN106657267A CN106657267A CN201611004580.7A CN201611004580A CN106657267A CN 106657267 A CN106657267 A CN 106657267A CN 201611004580 A CN201611004580 A CN 201611004580A CN 106657267 A CN106657267 A CN 106657267A
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- edge server
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- underlying device
- cloud
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/10—Protocols in which an application is distributed across nodes in the network
- H04L67/1097—Protocols in which an application is distributed across nodes in the network for distributed storage of data in networks, e.g. transport arrangements for network file system [NFS], storage area networks [SAN] or network attached storage [NAS]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/04—Network management architectures or arrangements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/04—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks
- H04L63/0428—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the data content is protected, e.g. by encrypting or encapsulating the payload
- H04L63/0471—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the data content is protected, e.g. by encrypting or encapsulating the payload applying encryption by an intermediary, e.g. receiving clear information at the intermediary and encrypting the received information at the intermediary before forwarding
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/06—Protocols specially adapted for file transfer, e.g. file transfer protocol [FTP]
Abstract
The invention discloses a cloud storage system based on an edge server, belongs to a cloud storage and file encryption system, and solves a problem that a cloud terminal of a conventional cloud storage system cannot be trusted. The system comprises a cloud server, the edge server, and bottom layer equipment of a user terminal. The edge server carries out the encryption and metainformation processing of a file which needs to be transmitted by the bottom layer equipment to the cloud server, and then transmits the file to the cloud server. When the bottom layer equipment needs to download the file, the edge server downloads the file from the cloud server based on the user identity of the bottom layer equipment, and then transmits the file to the bottom layer equipment after decryption. The file metainformation and encryption information stored in the edge server are used for the encryption of the cloud server, and the edge server does not store the file before and after encryption, so as to guarantee the privacy and safety of the file of the cloud server. The edge server carries out the local management of the bottom layer equipment, and the grouped management improves the controllability of the system, and can avoid the embarrassment condition of excessive cloud loads caused by the connection of all bottom layer equipment to one cloud server.
Description
Technical field
The invention belongs to cloud storage and file encryption system, and in particular to a kind of cloud storage system based on Edge Server
System.
Background technology
Cloud storage system referred to by functions such as cluster application, network technology or distributed file systems, will be big in network
Measure various types of storage device and collaborative work is gathered by application software, it is common that data storage and industry are externally provided
One system of business access function, several big feature of parallel computation, grid computing and distributed treatment that it inherits cloud computing
And expanded based on this.
The proposition of cloud storage system and extensively application have been broken the space of conventional store mode and have been limited, and have been expanded indirectly and have been set
Standby memory capacity.But user also loses the absolute control to data while cloud storage supplier's service provided is enjoyed
Power：The file of cloud storage service device is placed on for the supplier's aspect for providing service is completely exposed, storage data beyond the clouds
The privacy of security and user depends entirely on the security strategy that cloud storage supplier takes.Once the safe machine that supplier provides
System is cracked, and user is retrievable to free man in the data that cloud server terminal is stored, and safety issue is to govern cloud to deposit
One of principal element of storage service development and popularization.Thus, from the consideration of personal secrets, user may selectively by important text
Part, such as secret photo is stored separately on locally, and other photos are placed in cloud storage space some；But such selectivity is deposited
Storage has not only broken up the cloud service experience of user, while also disagreing with the essence of cloud storage service.
In existing cloud storage system, file encryption storage is the main stream approach for solving file confidentiality issue beyond the clouds, is
Its data is uploaded to before Cloud Server the logarithm in underlying device by the user data of protection cloud storage application, data owner
It is complex when taking because underlying device mostly is the limited equipment of the computing capabilitys such as mobile phone or sensor according to being encrypted
Larger burden can be caused during AES to underlying device, the normal operation of equipment is affected；Simultaneously as underlying device and cloud
End is directly connected to, it may appear that the large number quipments from various places carry out with cloud server simultaneously data interaction cause high in the clouds load compared with
Big situation, the problems such as there is also file metadata and encryption information management service.
The present invention adds marginal layer in the high in the clouds-underlying device double-layer structure adopted based on traditional cloud computing service,
Form three stratus computation structures of high in the clouds-edge-underlying device.Wherein, the computational service that marginal layer is provided is edge meter
Calculate.The three stratus structures for introducing marginal layer reduce the load of cloud server, strengthen high in the clouds using the pipe to underlying device
Reason, while cloud service can be realized by the loading application on Edge Server.
The content of the invention
The present invention provides a kind of cloud storage system based on Edge Server, solves existing cloud storage system high in the clouds insincere
Problem.
A kind of cloud storage system based on Edge Server provided by the present invention, including cloud server and user side
Underlying device, it is characterised in that：
Files passe and download are carried out by Edge Server between the underlying device and cloud server of the user side
Service；
The underlying device carries client, carries out operations described below：(1) file to be stored is uploaded to Edge Server；(2)
File download request is sent to Edge Server, file to be downloaded is asked；The underlying device is Portable movable computing device；
The Edge Server internal memory contains AES storehouse, facility inventory, Hash feature value list and upper transmitting file
Metamessage list, and with file encryption, file decryption ability；Edge Server carries out operations described below：(3) to cloud server
Upload file to be stored：Send to cloud service after the file to be stored encryption uploaded to the underlying device in the facility inventory
Device；(4) file is downloaded from cloud server：Download what the underlying device request in the facility inventory was downloaded from cloud server
File, sends to underlying device after decryption；
The Edge Server is the computing device independently of Cloud Server, including computer or portable mobile apparatus；
The AES storehouse includes des encryption algorithm, RSA cryptographic algorithms；Underlying device is prestored in the facility inventory
Identification information, the quantity of underlying device only considers to be limited by Edge Server memory size；Do not have in other conditions conditional
In the case of, if a underlying device needs the internal memory of 512MB to support, then the Edge Server that 16GB is saved as in is theoretical
On can provide service for 32 underlying devices simultaneously；The Hash feature value list is used to preserve carries out Hash calculation to file
Resulting Hash characteristic value；Upload file meta-information list is used to preserve upload file meta-information；
The DES is referred to as DEA, is a kind of symmetric encipherment algorithm, and IBM once possesses it patent right, but
After nineteen eighty-three patent right expires, in publicly-owned scope, formally adopted by U.S. government within 1997, directly can be obtained from internet
.The RSA is referred to as public key encryption algorithm, be 1977 by Ron Rivest, A Di Shamir Adi Shamir and
Leonard Adleman propose jointly, and RSA is their three people's surnames beginning initials, and at that time their three people were in Massachusetts science and engineering
Institute works；Announce first within 1987, directly can obtain from internet；
The cloud server takes existing publicly-owned cloud server, stores the encryption file that Edge Server is uploaded；
Download the file into Edge Server；The publicly-owned cloud server includes Tengxun's cloud server, Baidu's cloud server, Ali
Cloud server, Huawei's cloud server.
The described cloud storage system based on Edge Server, it is further characterized by：
(1) when the underlying device is to Edge Server upload file to be stored, including operations described below：
(1.1) matched with Edge Server：Self identification information is sent to Edge Server, Edge Server is waited
Matching result is provided, the match is successful is then carried out (1.2), it fails to match cannot then continue operation；The identification information sets for bottom
Standby itself unique mark, including device numbering；
(1.2) underlying device selects the file to be stored of user, while according to Edge Server the match is successful message, from
AES is chosen in the AES storehouse of Edge Server；
(1.3) underlying device to Edge Server send storage file request, storage file request include file to be stored,
File meta-information and AES, file meta-information includes filename, file type and file size；
(2) when underlying device sends file download and asks to Edge Server, including operations described below：
(2.1) matched with Edge Server：Self identification information is sent to Edge Server, Edge Server is waited
Matching result is provided, the match is successful is then carried out (2.2), it fails to match cannot then continue operation；
(2.2) underlying device obtains the file meta-information of file to be downloaded from user；
(2.3) underlying device sends download request to Edge Server, and download request includes the file unit of file to be downloaded
Information.
The described cloud storage system based on Edge Server, it is further characterised by：
(3) Edge Server uploads file to be stored, including operations described below to cloud server：
(3.1) matched with underlying device：After the identification information of underlying device is received, check in the facility inventory
It is then to send the match is successful message to underlying device with the presence or absence of respective identification information, waits underlying device further to ask, it is no
Then not answer or to the underlying device message that sends that it fails to match, further asked with refusing underlying device；
(3.2) Edge Server is received after storage file request, and the file meta-information of file to be stored therein is carried out
Hash calculation, obtains the Hash characteristic value of file；
(3.3) the Hash characteristic value of resulting file is carried out with the Hash feature value list being stored in Edge Server
Compare, judge that it whether there is, be then to judge file to be stored redundancy, return to underlying device and upload successful information, terminate behaviour
Make；Otherwise the Hash characteristic value is added in Hash feature value list, follow-up (3.4) operation is continued executing with；
(3.4) Edge Server is encrypted according to the AES specified in storage file request to file to be stored,
Obtain encrypting file；
(3.5) Edge Server sends upload request to cloud server, will encryption files passe to cloud server, etc.
Treat that cloud server returns to the path that file is stored in cloud server；Then preserve in file meta-information list is uploaded
Transmitting file metamessage, upload file meta-information include filename, the Hash characteristic value of file, AES, encryption key and
File is stored in the path in cloud server；
(4) Edge Server downloads file, including operations described below from cloud server：
(4.1) matched with underlying device：After the identification information of underlying device is received, check in the facility inventory
It is then to send the match is successful message to underlying device with the presence or absence of respective identification information, waits underlying device further to ask, it is no
Then not answer or to the underlying device message that sends that it fails to match, further asked with refusing underlying device；
(4.2) Edge Server is received after file download request, and to file meta-information in download request Hash meter is carried out
Calculate, obtain the Hash characteristic value of file；
(4.3) according to the Hash characteristic value of this document, in file meta-information list is uploaded line retrieval is entered, whether judges it
Exist, be to obtain the path that corresponding AES, encryption key and file are stored in cloud server；Carry out follow-up
Step (4.4)；Otherwise file not existence information, and end operation are returned to underlying device,；
(4.4) Edge Server sends download request to cloud server, and according to the file cloud server is stored in
In path, from cloud server download encryption file, and according to the AES, encryption key to encrypt file solve
It is close to obtain original itself；
(4.5) original is sent in itself Edge Server underlying device, completes file download.
The present invention takes cloud server, Edge Server, underlying device for the insincere problem in high in the clouds in cloud storage
Three-decker realize storing the encryption of high in the clouds file.
File to uploading to high in the clouds in underlying device of the invention, Edge Server verifies user's body of underlying device
Part, then file is encrypted and file metadata process after upload to high in the clouds, file need to be only transferred to edge by underlying device
In server, the amount of calculation of underlying device is reduced；File encryption, decryption and file pipe are realized on Edge Server
The functions such as reason scheduling, the file metadata being stored in Edge Server and encryption information maintain secrecy to high in the clouds.Edge Server is not
File before and after storage encryption, to guarantee the privacy and security of high in the clouds file.When underlying device selectes the text for needing to download
During part, user identity of the Edge Server based on underlying device downloads file from cloud server, again obtains decryption after decryption
File be sent to underlying device.
In the present invention, the management of underlying device and maintenance passes through one or more coupled Edge Server realities
Existing, Edge Server performs the encryption of file, decrypting process, because Edge Server only manages the bottom in the range of it
Equipment, so Edge Server is local management to the administrative mechanism of underlying device.By way of this grouping management, strengthen
The controllability of system, can avoid the similar underlying device from whole world different places from being all connected to same Cloud Server
Awkward situation.
Description of the drawings
Fig. 1 is the structural representation of the embodiment of the present invention.
Specific embodiment
Below in conjunction with drawings and Examples, the present invention is further described.
As shown in figure 1, embodiments of the invention include cloud server, Edge Server and underlying device, cloud service
Device is publicly-owned Tengxun's Cloud Server, and Edge Server includes first edge server and second edge server, first edge
Server provides service for the first～the 3rd underlying device, and second edge server provides clothes for the 4th～the 6th underlying device
Business.
In the present embodiment, first edge server and second edge server are respectively adopted memory size for the desk-top of 16GB
Machine, memory size are the notebook computer of 8GB, and the first～the 6th underlying device is smart mobile phone, and device numbering is respectively
861069039272250、861069039272268、861069039272270、861069039272271、
861069039272272、861069039272273。
Be stored with respectively AES storehouse, facility inventory, Hash characteristic value row in first, second Edge Server
Table and upload file meta-information list, the AES storehouse includes des encryption algorithm, RSA cryptographic algorithms；First edge
Prestore in the facility inventory of server the first～the 3rd underlying device device numbering 861069039272250,
861069039272268、861069039272270；The the 4th～the 6th is prestored in the facility inventory of second edge server
The device numbering 861069039272271,861069039272272,861069039272273 of underlying device.
By taking wherein the first underlying device as an example, when uploading file to be stored to first edge server, including operations described below：
(1.1) matched with first edge server：Equipment of itself numbering is sent to first edge server
861069039272250, wait first edge server to provide matching result, the match is successful is then carried out (1.2), and it fails to match then
Operation cannot be continued；
(1.2) first underlying devices select the file to be stored " cloud storage system based on Edge Server of user
.doc ", while according to first edge server the match is successful message, encryption is chosen from the AES storehouse of Edge Server
Algorithm DES；
(1.3) first underlying devices to first edge server sends storage file request, and storage file request includes treating
Storage file, file meta-information and AES DES, file meta-information includes the filename ' cloud storage based on Edge Server
System ', file type ' .doc ' and file size ' 87.0KB '；
When first edge server is to Tengxun's cloud server upload file to be stored, including operations described below：
(3.1) matched with underlying device：After the identification information of the first underlying device is received, the equipment mesh is checked
Whether there is respective identification information in record, be then to send the match is successful message to underlying device, wait underlying device further please
Ask, otherwise not answer or to the underlying device message that sends that it fails to match, further asked with refusing underlying device；
(3.2) first edge server is received after storage file request, the file meta-information to file to be stored therein
Hash calculation is carried out, the Hash characteristic value of file is obtained；
(3.3) by the Hash characteristic value of resulting file and the Hash feature value list being stored in first edge server
Compare, judge that it whether there is, be then judge file to be stored ' based on Edge Server cloud storage system .doc ' it is superfluous
It is remaining, return to underlying device and upload successful information, end operation；Otherwise the Hash characteristic value is added to into Hash characteristic value row
In table, follow-up (3.4) operation is continued executing with；
(3.4) first edge server enters according to the AES DES specified in storage file request to file to be stored
Row encryption, obtains encrypting file；
(3.5) first edge server sends upload request to Tengxun's Cloud Server, by encryption files passe to Tengxun's cloud
Server, waits cloud server to return to the path that file is stored in cloud server；Then file meta-information row are being uploaded
In table preserve upload file meta-information, upload file meta-information include filename, the Hash characteristic value of file, AES DES,
Encryption key and and file be stored in the path in cloud server.
By taking the first underlying device as an example, to first edge server file ' the cloud storage system based on Edge Server is sent
During the download request of system .doc ', including operations described below：
(2.1) matched with first edge server：Equipment of itself numbering is sent to first edge server
861069039272250, wait first edge server to provide matching result, the match is successful is then carried out (2.2), and it fails to match then
Operation cannot be continued；
(2.2) first underlying devices obtain file to be downloaded ' the cloud storage system .doc ' based on Edge Server from user
File meta-information；
(2.3) first underlying devices to first edge server sends download request, and download request includes file to be downloaded
File meta-information.
First edge server from Tengxun cloud server download file when, including operations described below：
(4.1) matched with underlying device：After the identification information of the first underlying device is received, the equipment mesh is checked
Whether there is respective identification information in record, be then to send the match is successful message to underlying device, wait underlying device further please
Ask, otherwise not answer or to the underlying device message that sends that it fails to match, further asked with refusing underlying device；
(4.2) first edge server is received after file download request, and file meta-information in download request is breathed out
It is uncommon to calculate, obtain the Hash characteristic value of file；
(4.3) according to the Hash characteristic value of this document, in file meta-information list is uploaded line retrieval is entered, whether judges it
Exist, be to obtain the path that corresponding AES DES, encryption key and file are stored in cloud server, carry out
Subsequent step (4.4)；Otherwise return file not existence information, and end operation to the first underlying device；
(4.4) first edge server sends download request to cloud server, is taken beyond the clouds according to file storage
Path in business device, from Tengxun's cloud server encryption file is downloaded, and is added according to the AES DES, encryption key pair
Ciphertext part is decrypted and obtains original ' the cloud storage system .doc ' based on Edge Server itself；
(4.5) original is sent in itself first edge server the first underlying device, so as to complete file ' based on side
The download of the cloud storage system .doc ' of edge server.
Claims (3)
1. a kind of cloud storage system based on Edge Server, including the underlying device of cloud server and user side, its feature
It is：
Files passe and download service are carried out by Edge Server between the underlying device and cloud server of the user side；
The underlying device carries client, carries out operations described below：(1) file to be stored is uploaded to Edge Server；(2) to side
Edge server sends file download request, asks file to be downloaded；The underlying device is Portable movable computing device；
The Edge Server internal memory contains AES storehouse, facility inventory, Hash feature value list and upper transmitting file unit letter
Breath list, and with file encryption, file decryption ability；Edge Server carries out operations described below：(3) upload to cloud server
File to be stored：Send to cloud server after the file to be stored encryption uploaded to the underlying device in the facility inventory；
(4) file is downloaded from cloud server：The text that the underlying device request in the facility inventory is downloaded is downloaded from cloud server
Part, sends to underlying device after decryption；
The Edge Server is the computing device independently of Cloud Server, including computer or portable mobile apparatus；It is described
AES storehouse includes des encryption algorithm, RSA cryptographic algorithms；The mark of underlying device is prestored in the facility inventory
Information, the quantity of underlying device only considers to be limited by Edge Server memory size；The Hash feature value list is used to protect
Depositing carries out Hash characteristic value obtained by Hash calculation to file；Upload file meta-information list is used to preserve transmitting file unit
Information；
The cloud server takes existing publicly-owned cloud server, stores the encryption file that Edge Server is uploaded；Download
File is to Edge Server；The publicly-owned cloud server includes Tengxun's cloud server, Baidu's cloud server, Ali high in the clouds
Server, Huawei's cloud server.
2. the cloud storage system of Edge Server is based on as claimed in claim 1, it is characterised in that：
(1) when the underlying device is to Edge Server upload file to be stored, including operations described below：
(1.1) matched with Edge Server：Self identification information is sent to Edge Server, waits Edge Server to provide
Matching result, the match is successful is then carried out (1.2), and it fails to match cannot then continue operation；The identification information be underlying device from
Body unique mark, including device numbering；
(1.2) underlying device selects the file to be stored of user, while according to Edge Server the match is successful message, from edge
AES is chosen in the AES storehouse of server；
(1.3) underlying device sends storage file request to Edge Server, and storage file request includes file to be stored, file
Metamessage and AES, file meta-information includes filename, file type and file size；
(2) when underlying device sends file download and asks to Edge Server, including operations described below：
(2.1) matched with Edge Server：Self identification information is sent to Edge Server, waits Edge Server to provide
Matching result, the match is successful is then carried out (2.2), and it fails to match cannot then continue operation；
(2.2) underlying device obtains the file meta-information of file to be downloaded from user；
(2.3) underlying device sends download request to Edge Server, and download request includes the file meta-information of file to be downloaded.
3. the cloud storage system of Edge Server is based on as claimed in claim 1, it is characterised in that：
(3) Edge Server uploads file to be stored, including operations described below to cloud server：
(3.1) matched with underlying device：After the identification information of underlying device is received, whether check in the facility inventory
There is respective identification information, be then to send the match is successful message to underlying device, wait underlying device further to ask, otherwise not
Give answer or send it fails to match message to underlying device, further asked with refusing underlying device；
(3.2) Edge Server is received after storage file request, and to the file meta-information of file to be stored therein Hash is carried out
Calculate, obtain the Hash characteristic value of file；
(3.3) the Hash characteristic value of resulting file is compared with the Hash feature value list being stored in Edge Server
It is right, judge that it whether there is, it is then to judge file to be stored redundancy, return to underlying device and upload successful information, end operation；
Otherwise the Hash characteristic value is added in Hash feature value list, follow-up (3.4) operation is continued executing with；
(3.4) Edge Server is encrypted according to the AES specified in storage file request to file to be stored, obtains
Encryption file；
(3.5) Edge Server sends upload request to cloud server, by encryption files passe to cloud server, waits cloud
End server returns to the path that file is stored in cloud server；Then preserve in file meta-information list is uploaded and upload text
Part metamessage, uploading file meta-information includes filename, the Hash characteristic value of file, AES, encryption key and file
The path being stored in cloud server；
(4) Edge Server downloads file, including operations described below from cloud server：
(4.1) matched with underlying device：After the identification information of underlying device is received, whether check in the facility inventory
There is respective identification information, be then to send the match is successful message to underlying device, wait underlying device further to ask, otherwise not
Give answer or send it fails to match message to underlying device, further asked with refusing underlying device；
(4.2) Edge Server is received after file download request, and to file meta-information in download request Hash calculation is carried out, and is obtained
To the Hash characteristic value of file；
(4.3) according to the Hash characteristic value of this document, in file meta-information list is uploaded line retrieval is entered, judges whether it deposits
It is being to obtain the path that corresponding AES, encryption key and file are stored in cloud server；Subsequently walked
Suddenly (4.4)；Otherwise file not existence information, and end operation are returned to underlying device,；
(4.4) Edge Server sends download request to cloud server, is stored in cloud server according to the file
Path, from cloud server encryption file is downloaded, and is decrypted to encrypting file according to the AES, encryption key
To original itself；
(4.5) original is sent in itself Edge Server underlying device, completes file download.
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