CN109492436A - A kind of file verification method and relevant apparatus - Google Patents
A kind of file verification method and relevant apparatus Download PDFInfo
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- CN109492436A CN109492436A CN201811447441.0A CN201811447441A CN109492436A CN 109492436 A CN109492436 A CN 109492436A CN 201811447441 A CN201811447441 A CN 201811447441A CN 109492436 A CN109492436 A CN 109492436A
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- G06F21/60—Protecting data
- G06F21/64—Protecting data integrity, e.g. using checksums, certificates or signatures
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- H04L9/06—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols the encryption apparatus using shift registers or memories for block-wise or stream coding, e.g. DES systems or RC4; Hash functions; Pseudorandom sequence generators
- H04L9/0643—Hash functions, e.g. MD5, SHA, HMAC or f9 MAC
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Abstract
The invention discloses a kind of file verification methods, comprising: client sends request of data to CDN network node according to the data extracting rule obtained from source server, so that the CDN network node returns to the corresponding target data of the data extracting rule；Check value calculating is carried out to the target data, obtains the first check value；Judge whether first check value and the second check value obtained from source server are identical；Wherein, the second check value source server is calculated the target data corresponding source data progress check value according to the data extracting rule；If so, sending partial data acquisition request to the CDN network node.The invention also discloses a kind of file verification device, file verification system, computer readable storage medium and computer program products.The calculation amount that verification calculates is reduced by carrying out verification to target data, computational efficiency is improved, improves hardware performance.
Description
Technical field
The present invention relates to file verification technical field more particularly to a kind of file verification methods, file verification device, file
Check system, computer readable storage medium and computer program product.
Background technique
Currently, when needing to verify file, mainly calculate the MD5 value of this document, by the MD5 value of source file and
The MD5 value of file to be tested is compared, to verify the correctness of file.But the data volume of some files is larger at present,
It carries out that very slowly the efficiency of file verification can be influenced when MD5 value calculates, reduces hardware performance.Also, under in CDN network
When load source file is verified, it is possible to the data inherently mistake in CDN network occur, directly result in and download to client
The file verification at end unsuccessfully reacquires source file, and hardware resource waste influences the efficiency using file, reduces hardware performance.
Therefore, the Important Problems that the resource utilization of file verification process is those skilled in the art's concern how to be reduced.
Summary of the invention
The main purpose of the present invention is to provide a kind of file verification method, file verification device, file verification system, meters
Calculation machine readable storage medium storing program for executing and computer program product, it is intended to which occupancy hardware resource is larger during solving file verification, holds
The technical issues of easily causing the wasting of resources.
To achieve the above object, the present invention provides a kind of file verification method, which comprises
Client sends request of data to CDN network node according to the data extracting rule obtained from source server, so as to
The CDN network node returns to the corresponding target data of the data extracting rule；
Check value calculating is carried out to the target data, obtains the first check value；
Judge whether first check value and the second check value obtained from source server are identical；Wherein, described second
Check value carries out check value to the corresponding source data of the target data according to the data extracting rule for the source server
It is calculated；
If so, sending partial data acquisition request to the CDN network node.
Optionally, the method also includes:
After obtaining the partial data from the CDN network node, the client is extracted according to the data and is advised
Check value calculating then is carried out to the partial data, obtains third check value；
Judge whether the third check value and second check value are identical；
It is successfully instructed if so, sending secondary verify.
Optionally, the client carries out check value calculating to the partial data according to the data extracting rule, obtains
To third check value, comprising:
The client carries out data extraction to the partial data according to the data extracting rule, obtains check number
According to；
Check value calculating is carried out to the verification data, obtains the third check value.
Optionally, the client carries out data extraction to the partial data according to the data extracting rule, obtains
Verify data, comprising:
The client according in the data extracting rule multiple offset address and the first preset data length to institute
It states partial data and carries out data extraction, obtain multiple first data blocks；
All first data blocks are combined to obtain the verification data.
Optionally, the client carries out data extraction to the partial data according to the data extracting rule, obtains
Verify data, comprising:
The client decomposes the partial data to obtain multiple numbers according to the default the piece number of the data extracting rule
According to piece；
Data extraction is carried out to each data slice according to the second preset data length of the data extracting rule, is obtained more
A second data block；
All second data blocks are combined to obtain the verification data.
Optionally, further includes:
When first check value and second check value be not identical, verification failure command is sent.
To achieve the above object, the present invention further provides a kind of file verification device, described device includes memory, place
Device and bus are managed, is stored with the file verification program that can be run on the processor, the file verification on the memory
Program realizes file verification method as described above when being executed by the processor.
To achieve the above object, the present invention further provides a kind of file verification system, the system comprises:
Client, for sending request of data according to from the data extracting rule that source server obtains to CDN network node,
Check value calculating is carried out to obtained target data, obtains the first check value；When first check value is obtained with from source server
When the second check value taken is identical, Xiang Suoshu CDN network node sends partial data acquisition request；
Source server, for carrying out check value to the corresponding source data of the target data according to the data extracting rule
Second check value is calculated；
CDN network node, for returning to the corresponding target data of the data extracting rule to the client.
To achieve the above object, the present invention further provides a kind of computer readable storage mediums, described computer-readable
File verification program is stored on storage medium, the file verification program can be executed by one or more processor, with reality
Now file verification method as described above.
To achieve the above object, the present invention further provides a kind of computer program products, which is characterized in that including calculating
Machine instruction, when run on a computer, allows computer to execute file verification method as described above.
The present invention by before client downloads partial data according to data extracting rule in content distributing network
CDN network Node extraction carries out check value to the target data and the first check value is calculated to corresponding target data, due to
Check value calculating has also been carried out to source data according to identical data extracting rule in source server, and has obtained the second verification
Value, therefore the first check value and the second check value are judged, so that it may determine the partial data in CDN network node and source
Whether the source data in server is identical, that is, determines whether the partial data in CDN network is correct, and then under determining whether
Partial data is carried, that is, the partial data downloaded is verified according to target data, reduces the meter of check value calculating
Calculation amount, improves the efficiency of check value calculating, while avoiding having to completely to download total data and can just carry out file verification
The case where, resource utilization is reduced, hardware performance is improved.
Detailed description of the invention
Fig. 1 is the flow diagram of first embodiment of the invention；
Fig. 2 is the flow diagram of second embodiment of the invention；
Fig. 3 is the flow diagram of third embodiment of the invention；
Fig. 4 is the schematic diagram of internal structure for the file verification device that first embodiment of the invention discloses；
Fig. 5 is the structural schematic diagram for the file verification system that first embodiment of the invention discloses.
The embodiments will be further described with reference to the accompanying drawings for the realization, the function and the advantages of the object of the present invention.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that described herein, specific examples are only used to explain the present invention, not
For limiting the present invention.Based on the embodiments of the present invention, those of ordinary skill in the art are not before making creative work
Every other embodiment obtained is put, shall fall within the protection scope of the present invention.
The description and claims of this application and term " first ", " second ", " third ", " in above-mentioned attached drawing
The (if present)s such as four " are to be used to distinguish similar objects, without being used to describe a particular order or precedence order.It should manage
The data that solution uses in this way are interchangeable under appropriate circumstances, so that the embodiments described herein can be in addition to illustrating herein
Or the sequence other than the content of description is implemented.In addition, term " includes " and " having " and their any deformation, it is intended that
Cover it is non-exclusive include, for example, containing the process, method, system, product or equipment of a series of steps or units need not limit
In step or unit those of is clearly listed, but may include be not clearly listed or for these process, methods, produce
The other step or units of product or equipment inherently.
It should be noted that the description for being related to " first ", " second " etc. in the present invention is used for description purposes only, and cannot
It is interpreted as its relative importance of indication or suggestion or implicitly indicates the quantity of indicated technical characteristic.Define as a result, " the
One ", the feature of " second " can explicitly or implicitly include at least one of the features.In addition, the skill between each embodiment
Art scheme can be combined with each other, but must be based on can be realized by those of ordinary skill in the art, when technical solution
Will be understood that the combination of this technical solution is not present in conjunction with there is conflicting or cannot achieve when, also not the present invention claims
Protection scope within.
The present invention provides a kind of file verification method.
Referring to Fig.1, Fig. 1 is the flow diagram of first embodiment of the invention.
In the first embodiment, this method may include:
S10, client send request of data to CDN network node according to the data extracting rule obtained from source server,
So as to the corresponding target data of CDN network node returned data extracting rule；
This step is intended to client and first obtains data extracting rule to source server, receives the data of source server return
Extracting rule sends node from request of data to CDN network and index server further according to the data extracting rule, so as to CDN
The target data to be extracted in partial data is sent to the client according to data extracting rule by network node.
Firstly, it is necessary to which the application environment to the present embodiment is illustrated, the present embodiment is mainly used in CDN (Content
Delivery Network content distributing network) in network.It is source that the process of data downloading is carried out before using CDN network
Server provides the data of source server local to downloading by network, but since the hardware performance of itself is insufficient or bandwidth
Can be insufficient, it can not provide and provide download service to more clients, just be needed at this time by the data distribution of source server to CDN
In network, so that client can get data from CDN network, not only solve that source server hardware resource is inadequate to ask
Topic, while client can choose the node progress data downloading that faster CDN network is connect with the machine, reduce data acquisition
Delay.As it can be seen that the process that the data in the present embodiment are transmitted is exactly that source data is distributed in CDN network by source server, visitor
Family end passes through CDN network again and downloads to corresponding data.
On the basis of CDN network application, client gets corresponding data from CDN network, in order to guarantee data
Consistency, need to verify the data of downloading.It is obstructed out-of-date when verifying, it needs to re-download data, when what is downloaded
When data volume is larger, repeated downloads waste bandwidth resource increases time-consuming, reduction efficiency.Also, when the data volume of downloading is larger also
The duration verified can be further increased, the efficiency of file verification process is reduced, increases the consumption of hardware resource.
Therefore, the present embodiment mainly passes through data extracting rule and extracts target data from partial data, to number of targets
According to being verified, due to the target data file less for data volume, the speed that the check value that can directly accelerate calculates, together
When compared to the big file for possessing partial data, target data, which is carried out transmission in network, can reduce the bandwidth resources of occupancy.
So first data extracting rule is obtained to source server in this step, further according in the rule of data extracting rule
Hold to CDN network node and sends request of data, that is, the corresponding target data of request partial data.It is rather than directly to CDN
Network node request partial data reduces the volume of transmitted data in the case where data consistency is unknown, avoids downloading
The case where partial data verification is not by waste bandwidth resource.
Wherein, being from the data extracting rule that source server obtains in this step can be from partial data by target data
The rule extracted, any device and server can be extracted according to the data extracting rule from identical partial data
Identical target data out.In other words, no matter server or client can will be complete by the data extracting rule
The big file of data is extracted into small documents, then carries out check value to small documents and calculate to reduce the data volume of checking procedure.Specifically
, data extracting rule, which can be, first carries out fragment in the data for extracting every sheet data preset address length to data, can also be with
It is the data that multiple offset address are set to partial data and extract preset address length since each offset address, can also adopts
Any one the data extracting rule provided with the prior art.As it can be seen that the form of the data extracting rule in this step is not only
One, suitable data extracting rule can be selected to be not specifically limited herein according to actual applicable cases.
Wherein, this step also needs to send request of data to CDN network node according to data extracting rule, since source services
The data that device is distributed to CDN network are that monolith data are cut into multiple fritters to be distributed on multiple CDN network nodes.Therefore, it examines
Consider the data distribution of CDN network, data extracting rule can be sent to the scheduling of CDN network node or CDN network
Server, so that CDN network node or dispatch server carry out the partial data in CDN network according to the data extracting rule
It extracts, obtains target data, then target data is returned into client.Can also be client according to data extracting rule to
The dispatch server of CDN network sends CDN network node lookup request, and return obtains the node address of multiple CDN network nodes,
Data are obtained further according to all node address to corresponding CDN network node；Be also possible to be provided using the prior art is appointed
The corresponding CDN network node of data recipient normal direction of a kind of CDN network node of anticipating obtains target data.As it can be seen that in this step
It is not unique, can be selected according to application environment to the mode that CDN network node sends request of data according to data extracting rule
Suitable request of data mode is selected, is not specifically limited herein.
S20 carries out check value calculating to target data, obtains the first check value；
On the basis of S10, this step is intended to carry out check value calculating to obtained target data, obtains the first verification
Value.Wherein, check value calculating can be the calculating of MD5 value, be also possible to cryptographic Hash calculating, can also be provided using the prior art
Any one check value calculation method, is not specifically limited herein.
It should be noted that the object verified in this step is target data, rather than it is complete corresponding to target data
Entire data.The target data is smaller compared to the data volume of partial data, in the hardware performance consume when check value calculating
Less.
S30 judges whether the first check value and the second check value obtained from source server are identical；Wherein, the second verification
Value is that source server is calculated target data corresponding source data progress check value according to data extracting rule；If so,
Then execute S40；If it is not, then executing S50；
On the basis of S20, this step is intended to obtain the second check value from source server, then judges the first check value and the
Whether two check values are identical, can be under in CDN network node if the identical verification that so can be determined that in this step passes through
Partial data being carried, if not identical, so that it may judgement does not pass through, and avoids the process for downloading partial data from CDN network again,
In other words the waste rate of resource is namely reduced.
It should be noted that the second check value in this step be source server according to identical data extracting rule to mesh
The corresponding source data of mark data carries out what check value was calculated.Wherein, the source data in source server is to be distributed to CDN network
In, it is partial data present in CDN network, then client is obtained from CDN network completely further according to data extracting rule
The corresponding target data of data.As it can be seen that it is partial data in CDN network that the first check value is corresponding, the second check value is corresponding
Be source data in source server, therefore judge that the first check value and the second check value are mainly exactly to judge in CDN network
The consistency of partial data and source data.
It is primarily due to that source data is distributed in CDN network when source server, it is possible to which there are complete in CDN network
There is mistake in data, mistake, waste bandwidth resource occur so as to cause the partial data of client downloads.
S40 sends partial data acquisition request to CDN network node；
This step is intended to when the first check value and identical the second check value, indicates the partial data in CDN network node
It is consistent, then just obtaining partial data from CDN network node, ensure that the consistent of the data downloaded from CDN network
Property, and avoid downloading total data and verified, reduce the waste of bandwidth resources, improves the efficiency of file verification.
S50 sends verification failure command.
This step is intended to when the first check value and not identical the second check value, indicates verification failure.It is likely due to
Partial data error in CDN network node, it is also possible to be to malfunction during data transmission, can have accordingly from source
Server distributes partial data again, can also directly acquire source data from source server, can also obtain from CDN network again
Target data is taken to exclude network transmission problems.
It, can also be with it should be noted that the client of method can be the terminal except CDN network in operation the present embodiment
It is in other words any one node in CDN network does not limit the concrete form of client, as long as running in the terminal
This method can verify the consistency of the partial data in CDN network, to realize broader applicability.
The present embodiment by before client downloads partial data according to data extracting rule in content distributing network
CDN network Node extraction to corresponding target data, check value is carried out to the target data, the first check value is calculated, by
In also having carried out check value calculating according to identical data extracting rule in source server, and the second check value is obtained, therefore
It is whether correct that the partial data that judgement is assured that in CDN network is carried out to the first check value and the second check value, and then really
It is fixed whether to download partial data, that is, the partial data downloaded is verified according to target data, reduce check value
The calculation amount of calculating, improves the efficiency of check value calculating, while avoiding having to completely to download total data and can just carry out
The case where file verification, reduces resource utilization, improves hardware performance.
On the basis of first embodiment, second embodiment primarily directed in first embodiment when client is from CDN network
After node obtains partial data, carries out second and verify, to guarantee the consistency of partial data.The operating method of other parts and
Illustrate to be substantially the same with first embodiment, same section can refer to first embodiment, and this will not be repeated here.
It is the flow diagram of second embodiment of the invention referring to Fig. 2, Fig. 2.
In a second embodiment, this method may include:
S60, after obtaining partial data from CDN network node, client is according to data extracting rule to partial data
Check value calculating is carried out, third check value is obtained；
This step purport is in the first embodiment after client gets partial data from CDN network node, client
Secondary verification is carried out to the partial data.Therefore, this step is intended to carry out school to partial data according to data extracting rule
Value calculating is tested, third check value is obtained.Its process mainly carries out data to partial data according to data extracting rule and extracts
Check value calculating is carried out to target data, then to target data, obtains third check value.Wherein, to be extracted data carry out
The mode that check value calculates can be calculated using the calculation of MD5 value, can also using cryptographic Hash calculation into
Row calculates, and can also be calculated, not done herein specific in such a way that any one check value that the prior art provides calculates
It limits.
S70 judges whether third check value is identical as the second check value；If so, executing S80；If it is not, then executing S90；
On the basis of step S60, this step be intended to judge third check value know with the second check value it is no identical, due to this
Embodiment is implemented after obtaining partial data from CDN network node in the first check value and identical the second check value, therefore,
The first check value and the second check value are identical at this time, that is to say, that also may determine that third check value and the first school in this step
Whether identical test value.
S80, transmission verify successfully instruct for the second time；
On the basis of S70, this step is intended to when third check value is identical as the second check value, send it is secondary verification at
Function instruction, that is, determine to verify twice and pass through, it ensure that client obtains the consistency of partial data.
S90 sends the second verification failure command.
On the basis of S70, this step is intended to when third check value and not identical the second check value, sends the second verification
Failure command that is to say that verification passes through for the first time for judgement, and verify failure for the second time, can by verifying the result passed through for the first time
The reason of verification failure occurs with exclusive segment reduces problem occurrence cause for example, partial data damages in CDN network node
Quantity improves the efficiency that verification failure problem solves.
The present embodiment by verifying the partial data according to data extracting rule after getting partial data again
Value calculates, and judges obtained third check value, that is, carry out one again in the case where first time, file verification passed through
Secondary verification improves the reliability verified to file, and can also reduce the performance consumption of check value calculating, improves verification
It is worth the efficiency calculated.
On the basis of second embodiment, how 3rd embodiment carries out client primarily directed in second embodiment
A preferred explanation is done in check value calculating, to improve the efficiency of check value calculating.The operating method and explanation of other parts
It is substantially the same with second embodiment, same section can refer to second embodiment, and this will not be repeated here.
It is the flow diagram of third embodiment of the invention referring to Fig. 3, Fig. 3.
In the present embodiment be mainly client according to data extracting rule to partial data carry out data extraction, verified
Data, the effect of the verification data and extracting mode are identical as the target data in first embodiment, then again to verification data
It carries out check value and third check value is calculated, wherein since the object for calculating check value has been substituted for extraction from partial data
Verification data out reduce the data volume that verification calculates, and reduce the used time that verification calculates, and improve the speed that verification calculates
Degree, while reducing the consumption of the hardware resource of checking procedure.
In the third embodiment, this method may include:
S61, client carry out data extraction to partial data according to data extracting rule, obtain verification data；
This step is intended to, and is carried out data extraction to partial data according to data extracting rule, is obtained verification data.This step
Middle to be also not quite similar according to the different mode extracted to partial data of data extracting rule, data extracting rule can be with
It is to extract partial data since first address to the data of certain length, for example, extracting (the MByte storage from first address to 3MB
Unit) position data；It is also possible to determine multiple addresses in partial data, extracts since each address to certain length
Interior data；It can also be that by partial data cutting be more parts of data, extract the data of the preset length in every part of data；Its
In, partial data can be divided equally, can also be without dividing equally, the preset length that data are extracted in every part of data can be
It is identical be also possible to it is different.As it can be seen that the form of data extracting rule is not unique in this step, it is therefore desirable to actually answer
Suitable data extracting rule is selected with situation, is not specifically limited herein.
In order to improve the degree of reliability of verification data, while reducing calculation amount when data are extracted.The following provide two kinds
The optinal plan that preferred data are extracted:
Preferably, this step may include:
Step 1, client according in data extracting rule multiple offset address and the first preset data length to complete
Data carry out data extraction, obtain multiple first data blocks；
Step 2, all first data blocks are combined to obtain verification data.
As it can be seen that being the multiple offset address and the first preset data by being demarcated in data extracting rule in this optinal plan
Length extracts each offset address and starts the data to the first preset data length, as the first data block, and by all
One data chunk is combined into check number evidence.For example, presently, there are the data of one section of 3GB (Gigabyte storage cell), setting offset
Address is from first address to the offset address of first character section, from first address to the offset address of the 1GB byte and from firstly
Location sets 1MB for the first preset data length to the offset address of the 2.5GB byte, advises then being extracted according to the data
It then carrying out data to extract being exactly since above-mentioned each address, the data in 1MB extract backward, as the first data block,
Each first data block is combined again to obtain verification data.
Certainly, according to the assessment of reliability requirement and different hardware behavior pattern to different check data volume, offset ground
The size of the data of location, the first preset data length can be adjusted, to obtain most suitable data extracting rule,
This is not specifically limited.
Specifically, in this preferred embodiment can by the specific format of data extracting rule can for file first address,
Multiple offset address and the first preset data length, wherein the effect of the first address of file is the tool for finding file
Body position.
This preferred embodiment is more suitable for applying in one section of partial data, since complete data are Coutinuous stores, passes through
The position for carrying out data extraction can be directly determined in the first address and data extracting rule of the partial data, to extract phase
Answer the data of length.
Preferably, this step may include:
Step 1, client decomposes partial data to obtain multiple data slices according to the default the piece number of data extracting rule；
Step 2, data extraction is carried out to each data slice according to the second preset data length of data extracting rule, obtained
Multiple second data blocks；
Step 3, all second data blocks are combined to obtain verification data.
As it can be seen that be the multiple data slices for being first divided into partial data in this preferred embodiment, it is long further according to the second preset data
Degree extracts corresponding second data block in each data slice.Therefore, this preferred embodiment is more suitable for for partial data being divided into
In the storage medium of multiple data slice distribution storages, such as partial data is divided into multiple data slices in one piece of storage equipment and is deposited
Storage is in discontinuous memory space or partial data is divided into multiple data slices and is respectively stored in different equipment.
Data extraction directly can be carried out to different data slices according to the second preset data length, avoid and carry out partial data again
Processing, improves the efficiency of checking treatment.And the step of partial data in the preferred embodiment being carried out fragment, directly answers
In CDN network, partial data is decomposed into multiple data slices according to the default the piece number in data extracting rule, then will own
Data slice is stored in multiple CDN network nodes.Accordingly, when client carries out file verification method shown in first embodiment
When, multiple second data blocks directly can be got in corresponding CDN network node according to the second preset data length, then will
All second data blocks are combined to obtain verification data (namely target data)
Certainly, according to the assessment of reliability requirement and different hardware behavior pattern to different check data volume, piece is preset
The size of several data, the second preset data length can be adjusted, to obtain most suitable data extracting rule,
This is not especially limited.
S62 carries out check value calculating to verification data, obtains third check value.
On the basis of step S61, this step is intended to carry out check value calculating to verification data, obtains third check value.
As it can be seen that the object for carrying out check value calculating in this step has been substituted for verification data from whole partial datas, by check value meter
The data volume of calculation reduces, and improves the efficiency of check value calculating.Wherein, the method for carrying out check value calculating can use MD5 value
Calculation calculated, can also be calculated, can also be provided using the prior art using the calculation of cryptographic Hash
Any one check value calculate mode calculated, be not specifically limited herein.
The present embodiment is passed through excellent by improving the efficiency of check value calculating while reducing check value calculation amount
Scheme is selected to ensure that the reliability of verification data.
The embodiment of the present application also provides a kind of file verification device 1, which may include memory 11, processor 12
With bus 13, the file verification program that can be run on the processor 12 is stored on memory 11, this document checking routine is located
Manage the file verification method realized when device 12 executes such as all of above embodiment.
It is the schematic diagram of internal structure for the file verification device that first embodiment of the invention discloses referring to Fig. 4, Fig. 4.
The file verification device 1 of the present embodiment, by before downloading partial data according to data extracting rule in content
CDN network Node extraction in distribution network carries out check value to the target data and is calculated the to corresponding target data
One check value due to also having carried out check value calculating according to identical data extracting rule in source server, and obtains second
Check value, therefore the partial data for judging to be assured that in CDN network is carried out whether to the first check value and the second check value
Correctly, and then determine whether to download partial data, that is, the partial data downloaded is verified according to target data, drop
The calculation amount that low check value calculates, improves the efficiency of check value calculating, while avoiding having to completely download total data
The case where file verification can just be carried out, resource utilization is reduced, hardware performance is improved.
In the present embodiment, file verification device 1 can be PC (Personal Computer, PC), can also be with
It is smart phone, tablet computer, palm PC, portable computer, intelligent router, mine machine, network storage equipment terminal device.
Wherein, memory 11 includes at least a type of readable storage medium storing program for executing, and readable storage medium storing program for executing includes flash memory, hard
Disk, multimedia card, card-type memory (for example, SD or DX memory etc.), magnetic storage, disk, CD etc..Memory 11 exists
It can be the internal storage unit of file verification device 1, such as the hard disk of this document calibration equipment 1 in some embodiments.Storage
Device 11 is also possible to match on the External memory equipment of file verification device 1, such as file verification device 1 in further embodiments
Standby plug-in type hard disk, intelligent memory card (Smart Media Card, SMC), secure digital (Secure Digital, SD)
Card, flash card (Flash Card) etc..Further, memory 11 can also both include the storage inside of file verification device 1
Unit also includes External memory equipment.Memory 11 can be not only used for the application software that storage is installed on file verification device 1
And Various types of data, such as the code of file verification program 01 etc., it can be also used for temporarily storing and exported or will be defeated
Data out.
Processor 12 can be in some embodiments a central processing unit (Central Processing Unit,
CPU), controller, microcontroller, microprocessor or other data processing chips, the program for being stored in run memory 11
Code or processing data, such as execute file verification program etc..
The bus 13 can be Peripheral Component Interconnect standard (peripheral component interconnect, abbreviation
PCI) bus or expanding the industrial standard structure (extended industry standard architecture, abbreviation EISA)
Bus etc..The bus can be divided into address bus, data/address bus, control bus etc..For convenient for indicating, in Fig. 4 only with one slightly
Line indicates, it is not intended that an only bus or a type of bus.
Further, file verification device can also include network interface, and network interface optionally may include wired connects
Mouth and/or wireless interface (such as WI-FI interface, blue tooth interface), commonly used in being built between the device 1 and other electronic equipments
Vertical communication connection.
Optionally, which can also include user interface, and user interface may include display (Display), input
Unit such as keyboard (Keyboard), optional user interface can also include standard wireline interface and wireless interface.It is optional
Ground, in some embodiments, display can be light-emitting diode display, liquid crystal display, touch-control liquid crystal display and OLED
(Organic Light-Emitting Diode, Organic Light Emitting Diode) touches device etc..Wherein, display can also be appropriate
Referred to as display screen or display unit, for being shown in the information handled in file verification device 1 and for showing visually
User interface.
Fig. 4 illustrates only the file verification device 1 with component 11-13 and file verification program, those skilled in the art
Member may include less than illustrating it is understood that structure shown in fig. 1 does not constitute the restriction to file verification device 1
Perhaps more components perhaps combine certain components or different component layouts.
A kind of file verification system provided by the embodiments of the present application is introduced below, a kind of file school described below
Check system can correspond to each other reference with a kind of above-described file verification method.
It is the structural schematic diagram for the file verification system that first embodiment of the invention discloses referring to Fig. 5, Fig. 5.
The system may include:
Client, for sending request of data according to from the data extracting rule that source server obtains to CDN network node,
Check value calculating is carried out to obtained target data, obtains the first check value；When the first check value with from source server obtain
When second check value is identical, partial data acquisition request is sent to CDN network node；
Source server is calculated for carrying out check value to the corresponding source data of target data according to data extracting rule
Second check value；
CDN network node is used for the corresponding target data of client returned data extracting rule.
The embodiment of the present application also provides a kind of computer readable storage medium, stores on the computer readable storage medium
There is file verification program, the file verification program can be executed by one or more processor, to realize such as above embodiments
The file verification method.
The embodiment of the present application also provides a kind of computer program product, including computer instruction, when it is transported on computers
When row, computer is allowed to execute file verification method described in above embodiments.
In the above-described embodiments, can come wholly or partly by software, hardware, firmware or any combination thereof real
It is existing.When implemented in software, it can entirely or partly realize in the form of a computer program product.
The computer program product includes one or more computer instructions.Load and execute on computers the meter
When calculation machine program instruction, entirely or partly generate according to process or function described in the embodiment of the present invention.The computer can
To be general purpose computer, special purpose computer, computer network or other programmable devices.The computer instruction can be deposited
Storage in a computer-readable storage medium, or from a computer readable storage medium to another computer readable storage medium
Transmission, for example, the computer instruction can pass through wired (example from a web-site, computer, server or data center
Such as coaxial cable, optical fiber, Digital Subscriber Line (DSL)) or wireless (such as infrared, wireless, microwave) mode to another website
Website, computer, server or data center are transmitted.The computer readable storage medium can be computer and can deposit
Any usable medium of storage either includes that the data storages such as one or more usable mediums integrated server, data center are set
It is standby.The usable medium can be magnetic medium, (for example, floppy disk, hard disk, tape), optical medium (for example, DVD) or partly lead
Body medium (such as solid state hard disk Solid State Disk (SSD)) etc..
It is apparent to those skilled in the art that for convenience and simplicity of description, the system of foregoing description,
The specific work process of device and unit, can refer to corresponding processes in the foregoing method embodiment, and details are not described herein.
In several embodiments provided herein, it should be understood that disclosed system, device and method can be with
It realizes by another way.For example, the apparatus embodiments described above are merely exemplary, for example, the unit
It divides, only a kind of logical function partition, there may be another division manner in actual implementation, such as multiple units or components
It can be combined or can be integrated into another system, or some features can be ignored or not executed.Another point, it is shown or
The mutual coupling, direct-coupling or communication connection discussed can be through some interfaces, the indirect coupling of device or unit
It closes or communicates to connect, can be electrical property, mechanical or other forms.
The unit as illustrated by the separation member may or may not be physically separated, aobvious as unit
The component shown may or may not be physical unit, it can and it is in one place, or may be distributed over multiple
In network unit.It can select some or all of unit therein according to the actual needs to realize the mesh of this embodiment scheme
's.
It, can also be in addition, each functional unit in each embodiment of the application can integrate in one processing unit
It is that each unit physically exists alone, can also be integrated in one unit with two or more units.Above-mentioned integrated list
Member both can take the form of hardware realization, can also realize in the form of software functional units.
If the integrated unit is realized in the form of SFU software functional unit and sells or use as independent product
When, it can store in a computer readable storage medium.Based on this understanding, the technical solution of the application is substantially
The all or part of the part that contributes to existing technology or the technical solution can be in the form of software products in other words
It embodies, which is stored in a storage medium, including some instructions are used so that a computer
Equipment (can be personal computer, server or the network equipment etc.) executes the complete of each embodiment the method for the application
Portion or part steps.And storage medium above-mentioned includes: USB flash disk, mobile hard disk, read-only memory (ROM, Read-Only
Memory), random access memory (RAM, Random Access Memory), magnetic or disk etc. are various can store journey
The medium of sequence code.
It should be noted that the serial number of the above embodiments of the invention is only for description, do not represent the advantages or disadvantages of the embodiments.And
The terms "include", "comprise" herein or any other variant thereof is intended to cover non-exclusive inclusion, so that packet
Process, device, article or the method for including a series of elements not only include those elements, but also including being not explicitly listed
Other element, or further include for this process, device, article or the intrinsic element of method.Do not limiting more
In the case where, the element that is limited by sentence "including a ...", it is not excluded that including process, device, the article of the element
Or there is also other identical elements in method.
The above is only a preferred embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalent structure or equivalent flow shift made by bright specification and accompanying drawing content is applied directly or indirectly in other relevant skills
Art field, is included within the scope of the present invention.
Claims (10)
1. a kind of file verification method, which is characterized in that the described method includes:
Client sends request of data to CDN network node according to the data extracting rule obtained from source server, so as to described
CDN network node returns to the corresponding target data of the data extracting rule；
Check value calculating is carried out to the target data, obtains the first check value；
Judge whether first check value and the second check value obtained from source server are identical；Wherein, second verification
Value carries out check value calculating to the corresponding source data of the target data according to the data extracting rule for the source server
It obtains；
If so, sending partial data acquisition request to the CDN network node.
2. the method as described in claim 1, which is characterized in that the method also includes:
After obtaining the partial data from the CDN network node, the client is according to the data extracting rule pair
The partial data carries out check value calculating, obtains third check value；
Judge whether the third check value and second check value are identical；
It is successfully instructed if so, sending secondary verify.
3. method according to claim 2, which is characterized in that the client is according to the data extracting rule to described complete
Entire data carries out check value calculating, obtains third check value, comprising:
The client carries out data extraction to the partial data according to the data extracting rule, obtains verification data；
Check value calculating is carried out to the verification data, obtains the third check value.
4. method as claimed in claim 3, which is characterized in that the client is according to the data extracting rule to described complete
Entire data carries out data extraction, obtains verification data, comprising:
The client according in the data extracting rule multiple offset address and the first preset data length to described complete
Entire data carries out data extraction, obtains multiple first data blocks；
All first data blocks are combined to obtain the verification data.
5. method as claimed in claim 3, which is characterized in that the client is according to the data extracting rule to described complete
Entire data carries out data extraction, obtains verification data, comprising:
The client decomposes the partial data to obtain multiple data slices according to the default the piece number of the data extracting rule；
Data extraction is carried out to each data slice according to the second preset data length of the data extracting rule, obtains multiple the
Two data blocks；
All second data blocks are combined to obtain the verification data.
6. such as method described in any one of claim 1 to 5, which is characterized in that further include:
When first check value and second check value be not identical, verification failure command is sent.
7. a kind of file verification device, which is characterized in that described device includes memory, processor and bus, the memory
On be stored with the file verification program that can be run on the processor, when the file verification program is executed by the processor
Realize such as file verification method described in any one of claims 1 to 6.
8. a kind of file verification system, which is characterized in that the system comprises:
Client, for sending request of data according to from the data extracting rule that source server obtains to CDN network node, to
The target data arrived carries out check value calculating, obtains the first check value；When first check value with from source server obtain
When second check value is identical, Xiang Suoshu CDN network node sends partial data acquisition request；
Source server, for carrying out check value calculating to the corresponding source data of the target data according to the data extracting rule
Obtain second check value；
CDN network node, for returning to the corresponding target data of the data extracting rule to the client.
9. a kind of computer readable storage medium, which is characterized in that be stored with file school on the computer readable storage medium
Program is tested, the file verification program can be executed by one or more processor, to realize as any in claim 1 to 6
File verification method described in.
10. a kind of computer program product, which is characterized in that including computer instruction, when run on a computer, so that
Computer can execute file verification method described in any one of the claims 1 to 6.
Priority Applications (1)
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| CN201811447441.0A CN109492436A (en) | 2018-11-29 | 2018-11-29 | A kind of file verification method and relevant apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811447441.0A CN109492436A (en) | 2018-11-29 | 2018-11-29 | A kind of file verification method and relevant apparatus |
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| CN201811447441.0A Pending CN109492436A (en) | 2018-11-29 | 2018-11-29 | A kind of file verification method and relevant apparatus |
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