CN109951735A - Video playing address analysis obtaining method, system and medium - Google Patents
Video playing address analysis obtaining method, system and medium Download PDFInfo
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- 238000004458 analytical method Methods 0.000 title description 3
- 238000004590 computer program Methods 0.000 claims description 6
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- 238000012545 processing Methods 0.000 claims description 3
- 238000006386 neutralization reaction Methods 0.000 claims 1
- 230000007246 mechanism Effects 0.000 abstract description 4
- 230000006872 improvement Effects 0.000 description 4
- 238000013475 authorization Methods 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
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Abstract
The invention discloses a method, a system and a medium for analyzing and acquiring a video playing address, wherein the implementation steps of the invention comprise that a client sends a playing address request aiming at a target video id to a playing back end; receiving an encrypted video file playing address and target file id information returned by a playing back end; generating a decryption key according to the encryption of the target video id information, the target file id information and the encryption parameter appointed by the playing back endd(ii) a Over-decryption keydAnd decrypting the encrypted video file playing address to obtain a real video file playing address. The invention realizes a safe video playing address analyzing and acquiring mechanism, only an authorized client can acquire the playing address under normal conditions, improves the threshold of acquiring the playing address by a third party hotlink, can solve the problem of hotlink of video files and reduces the operation cost of a video content service provider.
Description
Technical field
The present invention relates to video on demand techniques, and in particular to a kind of video playing address resolution acquisition methods, system and Jie
Matter.
Background technique
Existing video content services quotient generally pass through externally provide some access ports give the website APP, PC provide clothes
Business, these ports provide the http service of standard.For playing process, before APP plays some video, need to obtain
Broadcast address, it issues request to rear end is played, there is video id information in request, and broadcasting for each shelves clarity can be provided by playing rear end
Address is put, the rear end app root Ju acts the clarity setting broadcast, the broadcast address of corresponding clarity is selected to start to play.User's switching
When clarity, the broadcast address for just user being selected to specify clarity is played out.Because be standard http service, except oneself
App can be obtained outside broadcast address to rear end request is played, and other third party's (as stolen chain user) can also ask to rear end is played
It asks and obtains broadcast address.
Current safety control technology is mainly the use for concentrating on limitation broadcast address.When as having expired in broadcast address
Between, expired rear address cannot be used, and third party is avoided to be multiplexed broadcast address；User and app phase are added such as in broadcast address
Information is closed, when removing downloading society's frequency using broadcast address, the user and app for using this broadcast address are checked, in broadcast address
Information it is whether consistent, go that third party is avoided to usurp broadcast address.App is authenticated due to lacking, third party is not provided
Mechanism as broadcast address.Therefore, how to prevent third party (as steal chain user) steal video playing address resource, at
For a key technical problem urgently to be resolved.
Summary of the invention
The technical problem to be solved in the present invention: in view of the above problems in the prior art, a kind of video playing address solution is provided
Analysis acquisition methods, system and medium, the present invention realize a kind of safe video playing address resolution securing mechanism, normal condition
The client of lower only authorization could obtain broadcast address, improve third party and steal the threshold that chain obtains broadcast address, third party
The core parameter for only cracking the play control algorithm in this improvement, while taking algorithm could simulate normal client with
Broadcast address is obtained, so as to effectively solve the problems, such as that video file steals chain, reduces the operation cost of video content services quotient,
Improve the usage experience of legitimate user.
In order to solve the above-mentioned technical problem, the technical solution adopted by the present invention are as follows:
A kind of video file broadcast address parsing acquisition methods, implementation steps include:
1) client is requested to broadcast address of the rear end sending for target video id is played；
2) client, which receives, plays encrypted video file broadcast address and file destination id information that rear end returns；
3) client is according to target video id information, file destination id information and the encryption parameter encryption life for playing rear end agreement
At decruption key keyd；
4) client passes through decruption key keydDecryption encrypted video file broadcast address obtains real video file and plays ground
Location.
It optionally, further include sending encrypted mesh when issuing the broadcast address request for target video id in step 1)
Video id is marked, and encrypted target video id is to encrypt to generate according to target video id.
Optionally, the file destination id information received in step 2 is encrypted file destination id.
Optionally, the encryption parameter of in step 2 and broadcasting rear end agreement writes on client by Code obfuscation and reinforcing
In.
Optionally, step 1) client is played to after playing rear end sending for the broadcast address request of target video id
The processing step of rear end includes:
S1 it) plays rear end and encryption key is generated according to the corresponding file destination id of encrypted target video id, target video id
keye；
S2 it) plays rear end and encrypted file destination id is generated according to file destination id；
S3 it) plays rear end and uses encryption key keyeWhole parameters to the real video file broadcast address of file destination id or
Person's partial parameters encrypt, and obtain encrypted video file broadcast address；
S4 it) plays rear end and returns to encrypted video file broadcast address, encrypted file destination id to client.
Optionally, the decruption key keydGenerating function expression formula it is as the formula (1), the encryption key keye's
Generating function expression formula is as the formula (2)；
keyd= FIDvidMod p (1)
In formula (1), keydIndicate that decruption key, FID are encrypted file destination id, vid is original target video id, p
For client and the encryption parameter arranged rear end is played, p is the prime number greater than 0；
keye = VIDfidMod p (2)
In formula (2), keyeIndicate that encryption key, VID are encrypted target video id, fid is the corresponding mesh of target video id
File id is marked, p is client and the encryption parameter for playing rear end agreement, and p is the prime number greater than 0.
Optionally, the generating function expression formula of the encrypted target video id is as the formula (3)；
VID = gvidMod p (3)
In formula (3), VID table shows that encrypted target video id, vid are that original target video id, p and g are client and broadcast
The encryption parameter of rear end agreement is put, wherein p is the prime number greater than 0, and g is the integer greater than 0 and less than p.
Optionally, the generating function expression formula of the encrypted file destination id is as the formula (4)；
FID = gfidMod p (4)
In formula (4), FID indicates that encrypted file destination id, fid are that target video id corresponding file destination id, p and g are
Client and the encryption parameter for playing rear end agreement, wherein p is the prime number greater than 0, and g is the integer greater than 0 and less than p.
The present invention also provides a kind of video file broadcast address to parse acquisition methods, including computer equipment, feature exist
In, the computer equipment is programmed to perform the step of aforementioned video file broadcast address of the present invention parses acquisition methods, or
It is stored on the storage medium of computer equipment described in person and is programmed to perform aforementioned video file broadcast address parsing of the present invention
The computer program of acquisition methods.
The present invention also provides a kind of computer readable storage mediums, which is characterized in that the computer readable storage medium
On be stored with the computer program for being programmed to perform aforementioned video file broadcast address of the present invention parsing acquisition methods.
Compared to the prior art, the present invention has an advantage that
1, client of the invention, which receives, plays the encrypted video file broadcast address that rear end returns, and plays rear end to broadcast address
It is encrypted, client decryption just can request that video file plays, and improve the threshold for stealing chain person.
2, client of the invention encryption generates decruption key keyd, and client passes through decruption key keydDecryption encryption
Video file broadcast address obtains real video file broadcast address, and it is root Ju mesh that the key of encrypting and decrypting, which is not fixed,
The encryption parameter of mark video id information, file destination id information and broadcasting rear end agreement generates next, the text of different clarity
The key of part broadcast address is different, improves the threshold for stealing chain person.
3, the key link of encrypting and decrypting of the present invention includes: Encryption Algorithm, target video id information, file destination id letter
Breath and the encryption parameter for playing rear end agreement, aforementioned four link is indispensable, even if the target video during capture play
After id information, file destination id information, and Encryption Algorithm is known, if the encryption ginseng of rear end agreement can not be determined and be played
Number, then can not still decrypt encrypted video file broadcast address and obtain real video file broadcast address.Moreover, and after broadcasting
Holding the encryption parameter of agreement can also further write on inside client app as needed through Code obfuscation and reinforcing, can
Preventing reverse-engineering is that the specific value for the encryption parameter made an appointment is taken from client app.
The present invention realizes a kind of safe video playing address resolution securing mechanism, by visitor by above-mentioned 3 points
Family end and play rear end improve, although so that third party's simulant-client issue request can obtain broadcast address,
Directly playing rear end using these broadcast address can refuse to request, and achieve the purpose that controlling third party obtains broadcast address, normally
In the case of only authorization client could obtain broadcast address, improve third party obtain broadcast address threshold, third party
The core parameter for only cracking the play control algorithm in this improvement, while taking algorithm could simulate normal client with
Broadcast address is obtained, can effectively solve the problem that the problem of video file steals chain, has achieved the purpose that play security control, can reduce
Chain is stolen to the loss of business, the operation cost for reducing video content services quotient, the usage experience of raising legitimate user.
Detailed description of the invention
Fig. 1 is the basic principle schematic of present invention method.
Specific embodiment
As shown in Figure 1, the implementation steps of the present embodiment video file broadcast address parsing acquisition methods include:
1) client is requested to broadcast address of the rear end sending for target video id is played；
2) client, which receives, plays encrypted video file broadcast address and file destination id information that rear end returns；
3) client is according to target video id information, file destination id information and the encryption parameter encryption life for playing rear end agreement
At decruption key keyd；
4) client passes through decruption key keydDecryption encrypted video file broadcast address obtains real video file and plays ground
Location.
It further include after sending encryption when issuing the broadcast address request for target video id in the present embodiment, in step 1)
Target video id, and encrypted target video id is to be encrypted to generate according to target video id, passes through the encrypted mesh of transmission
Video id is marked, can prevent client from forging target video id.In addition it is also possible to directly transmit original target view as needed
Frequency id can be easier in this way making client forge target video id.
In the present embodiment, the file destination id information received in step 2 is encrypted file destination id.The present embodiment
In, encrypted target video id constitutes client and plays first of encryption link (client realization) between rear end, adds
File destination id after close then constitutes client and plays the second encryption link (play and realize on rear end) between rear end, and
Decruption key key is generated in conjunction with third road encryption link (client realization) encryptiondIt constitutes and generates decruption key keydThree add
Close link can be improved decruption key keydSafety, prevent decruption key keydIt is forged.
In the present embodiment, the encryption parameter of in step 2 and broadcasting rear end agreement writes on client by Code obfuscation and reinforcing
In end, can prevent reverse-engineering is that the specific value for the encryption parameter made an appointment is taken from client app.It needs to illustrate
It is to carry out Code obfuscation and reinforce to be the known approaches for preventing reverse-engineering from obtaining confidential information to code, in the present embodiment only
It is only the application to the above method, therefore its specific implementation details of not reinflated description herein.
In the present embodiment, after step 1) client issues the broadcast address request for target video id to broadcasting rear end,
Play rear end processing step include:
S1 it) plays rear end and encryption key is generated according to the corresponding file destination id of encrypted target video id, target video id
keye；
S2 it) plays rear end and encrypted file destination id is generated according to file destination id；
S3 it) plays rear end and uses encryption key keyeWhole parameters to the real video file broadcast address of file destination id or
Person's partial parameters encrypt, and obtain encrypted video file broadcast address；
S4 it) plays rear end and returns to encrypted video file broadcast address, encrypted file destination id to client.
As a kind of implementation special case, decruption key key in the present embodimentdGenerating function expression formula it is as the formula (1), add
Key keyeGenerating function expression formula it is as the formula (2)；
keyd= FIDvidMod p (1)
In formula (1), keydIndicate that decruption key, FID are encrypted file destination id, vid is original target video id, p
For client and the encryption parameter arranged rear end is played, p is the prime number greater than 0.Prime number p value is big as far as possible, in this way
A possibility that obtaining prime number p and integer g when chain person analyzes client terminal playing behavior is stolen with regard to smaller.Prime number p is to be suitable for mod operation
Parameter, if Encryption Algorithm does not use mod operation, play rear end agreement encryption parameter can according to actually use plus
Close algorithm is using corresponding parameter type, such as numerical value, character, character string etc..
keye = VIDfidMod p (2)
In formula (2), keyeIndicate that encryption key, VID are encrypted target video id, fid is the corresponding mesh of target video id
File id is marked, p is client and the encryption parameter for playing rear end agreement, and p is the prime number greater than 0.It should be noted that above-mentioned solution
Key keydGenerating function expression formula, encryption key keyeGenerating function expression formula be only a kind of Encryption Algorithm special case,
On this basis, those skilled in the art also can according to need other Encryption Algorithm, equally may be implemented to relevant information
Encryption.
As a kind of implementation special case, the generating function expression formula such as formula (3) of encrypted target video id in the present embodiment
It is shown；
VID = gvidMod p (3)
In formula (3), VID table shows that encrypted target video id, vid are that original target video id, p and g are client and broadcast
The encryption parameter of rear end agreement is put, wherein p is the prime number greater than 0, and g is the integer greater than 0 and less than p.On it should be noted that
The generating function expression formula for stating encrypted target video id is only a kind of Encryption Algorithm special case, on this basis, this field
Technical staff also can according to need other Encryption Algorithm, and the encryption to relevant information equally may be implemented.
As a kind of implementation special case, the generating function expression formula such as formula (4) of encrypted file destination id in the present embodiment
It is shown；
FID = gfidMod p (4)
In formula (4), FID indicates that encrypted file destination id, fid are that target video id corresponding file destination id, p and g are
Client and the encryption parameter for playing rear end agreement, wherein p is the prime number greater than 0, and g is the integer greater than 0 and less than p.It needs
Illustrate, the generating function expression formula of above-mentioned encrypted file destination id is only a kind of Encryption Algorithm special case, in this base
On plinth, those skilled in the art also can according to need other Encryption Algorithm, and the encryption to relevant information equally may be implemented.
Decruption key key in the present embodiment methoddWith encryption key keyeGeneration actually with Encryption Algorithm (such as mod
Operation), target video id(vid), file destination id(fid) and client and play the prime number p, whole that rear end is made an appointment
Number g are related, and above-mentioned link is indispensable, and target video id(vid), file destination id(fid) used in communication process
The mode of encryption, even if the encrypted target video id(VID during capture play), encrypted file destination id
(FID) after, know Encryption Algorithm, if the prime number p made an appointment, integer g can not be determined, can not still decrypt encryption
Video file broadcast address obtains real video file broadcast address.Moreover, the prime number p made an appointment, integer g pass through code
Obscure and reinforcing write on inside app, by reversed reverse-engineering be difficult to get to the prime number p made an appointment, integer g it is specific
Numerical value.
Client request broadcast address is carried out in conclusion the present embodiment video file broadcast address parses acquisition methods
Control, client issue the broadcast address request for target video id to broadcasting rear end, and client, which receives, plays rear end return
Encrypted video file broadcast address and file destination id information, according to target video id information, file destination id information and
The encryption parameter encryption for playing rear end agreement generates decruption key keyd, pass through decruption key keydDecryption encrypted video file is broadcast
It puts address (unlocking the whole or key parameter in broadcast address) and obtains real video file broadcast address, then by real
Video file broadcast address can to download video files.Third party, which simulates, issues broadcast address request, although may can obtain
Broadcast address, but because whole or key parameter encrypt, it cannot normally decrypt, to directly cannot go to download using this address
Video.Therefore, the present embodiment only allows the client approved normally to take broadcast address, avoids third party that from capable of obtaining broadcasting ground
Location can effectively solve the problem that the problem of video file steals chain, reduces the operation cost of video content services quotient, improves legitimate user's
Usage experience.
In the present embodiment, client specifically refers to player APP, furthermore also can according to need using video download device
APP, or the downloader APP with playing function, the platform of client installation is either the operating system of smart machine is flat
Platform is also possible to common computer operating system platform.
In addition, the present embodiment also provides a kind of video file broadcast address parsing acquisition methods, including computer equipment,
It is characterized in that, the computer equipment is programmed to perform the present embodiment aforementioned video file broadcast address parsing acquisition methods
It is stored on the storage medium of step or the computer equipment and is programmed to perform the broadcasting of the present embodiment aforementioned video file
The computer program of address resolution acquisition methods.In addition, the present embodiment also provides a kind of computer readable storage medium, feature
It is, is stored on the computer readable storage medium and is programmed to perform the present embodiment aforementioned video file broadcast address solution
Analyse the computer program of acquisition methods.
The above is only a preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-mentioned implementation
Example, all technical solutions belonged under thinking of the present invention all belong to the scope of protection of the present invention.It should be pointed out that for the art
Those of ordinary skill for, several improvements and modifications without departing from the principles of the present invention, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of video file broadcast address parses acquisition methods, it is characterised in that implementation steps include:
1) client is requested to broadcast address of the rear end sending for target video id is played；
2) client, which receives, plays encrypted video file broadcast address and file destination id information that rear end returns；
3) client is according to target video id information, file destination id information and the encryption parameter encryption life for playing rear end agreement
At decruption key keyd；
4) client passes through decruption key keydDecryption encrypted video file broadcast address obtains real video file and plays ground
Location.
2. video file broadcast address according to claim 1 parses acquisition methods, which is characterized in that issued in step 1)
For target video id broadcast address request when further include sending encrypted target video id, and encrypted target video
Id is to be encrypted to generate according to target video id.
3. video file broadcast address according to claim 1 parses acquisition methods, which is characterized in that received in step 2
File destination id information be encrypted file destination id.
4. video file broadcast address according to claim 1 parses acquisition methods, which is characterized in that step 2 neutralization is broadcast
The encryption parameter for putting rear end agreement is write in the client by Code obfuscation and reinforcing.
5. video file broadcast address according to claim 1 parses acquisition methods, which is characterized in that step 1) client
To after playing rear end sending for the broadcast address request of target video id, the processing step for playing rear end includes:
S1 it) plays rear end and encryption key is generated according to the corresponding file destination id of encrypted target video id, target video id
keye；
S2 it) plays rear end and encrypted file destination id is generated according to file destination id；
S3 it) plays rear end and uses encryption key keyeWhole parameters to the real video file broadcast address of file destination id or
Person's partial parameters encrypt, and obtain encrypted video file broadcast address；
S4 it) plays rear end and returns to encrypted video file broadcast address, encrypted file destination id to client.
6. video file broadcast address according to claim 5 parses acquisition methods, which is characterized in that the decruption key
keydGenerating function expression formula it is as the formula (1), the encryption key keyeGenerating function expression formula it is as the formula (2)；
keyd= FIDvidMod p (1)
In formula (1), keydIndicate that decruption key, FID are encrypted file destination id, vid is that original target video id, p are
Client and the encryption parameter for playing rear end agreement, p are the prime number greater than 0；
keye = VIDfidMod p (2)
In formula (2), keyeIndicate that encryption key, VID are encrypted target video id, fid is the corresponding target of target video id
File id, p are client and the encryption parameter for playing rear end agreement, and p is the prime number greater than 0.
7. video file broadcast address according to claim 2 or 5 parses acquisition methods, which is characterized in that the encryption
The generating function expression formula of target video id afterwards is as the formula (3)；
VID = gvidMod p (3)
In formula (3), VID table shows that encrypted target video id, vid are that original target video id, p and g are client and broadcast
The encryption parameter of rear end agreement is put, wherein p is the prime number greater than 0, and g is the integer greater than 0 and less than p.
8. the video file broadcast address according to claim 3 or 5 parses acquisition methods, which is characterized in that the encryption
The generating function expression formula of file destination id afterwards is as the formula (4)；
FID = gfidMod p (4)
In formula (4), FID indicates that encrypted file destination id, fid are that target video id corresponding file destination id, p and g are
Client and the encryption parameter for playing rear end agreement, wherein p is the prime number greater than 0, and g is the integer greater than 0 and less than p.
9. a kind of video file broadcast address parses acquisition system, including computer equipment, which is characterized in that the computer is set
Standby the step of being programmed to perform the parsing acquisition methods of video file broadcast address described in any one of claim 1~8, or
It is stored on the storage medium of computer equipment described in person and is programmed to perform video described in any one of claim 1~8
The computer program of file broadcast address parsing acquisition methods.
10. a kind of computer readable storage medium, which is characterized in that be stored with and be programmed on the computer readable storage medium
With the computer program of video file broadcast address parsing acquisition methods described in any one of perform claim requirement 1~8.
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| CN201910188987.7A CN109951735B (en) | 2019-03-13 | 2019-03-13 | Video playing address analysis obtaining method, system and medium |
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| CN201910188987.7A CN109951735B (en) | 2019-03-13 | 2019-03-13 | Video playing address analysis obtaining method, system and medium |
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| CN109951735B (en) | 2021-05-25 |
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