CN109996095A - A kind of network video-on-demand prevents from stealing method, system and the medium of chain broadcasting - Google Patents
A kind of network video-on-demand prevents from stealing method, system and the medium of chain broadcasting Download PDFInfo
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- CN109996095A CN109996095A CN201910243115.6A CN201910243115A CN109996095A CN 109996095 A CN109996095 A CN 109996095A CN 201910243115 A CN201910243115 A CN 201910243115A CN 109996095 A CN109996095 A CN 109996095A
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- key group
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- slicing files
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
- H04N21/254—Management at additional data server, e.g. shopping server, rights management server
- H04N21/2541—Rights Management
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
- H04N21/63—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
- H04N21/633—Control signals issued by server directed to the network components or client
- H04N21/6332—Control signals issued by server directed to the network components or client directed to client
- H04N21/6334—Control signals issued by server directed to the network components or client directed to client for authorisation, e.g. by transmitting a key
- H04N21/63345—Control signals issued by server directed to the network components or client directed to client for authorisation, e.g. by transmitting a key by transmitting keys
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
- H04N21/83—Generation or processing of protective or descriptive data associated with content; Content structuring
- H04N21/845—Structuring of content, e.g. decomposing content into time segments
- H04N21/8456—Structuring of content, e.g. decomposing content into time segments by decomposing the content in the time domain, e.g. in time segments
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
- H04N21/85—Assembly of content; Generation of multimedia applications
- H04N21/854—Content authoring
- H04N21/85406—Content authoring involving a specific file format, e.g. MP4 format
Abstract
A kind of method for preventing from stealing chain broadcasting the invention discloses network video-on-demand, system and medium, client of the present invention is for each of fragment index file fragment, cipher mode is specified according to the slicing files name filename dynamic of the fragment, according to the slicing files name filename of the fragment, it plays expired time es and the first authentication code token is generated using the cipher mode encryption of selection, and the slicing files name filename of the fragment is sent when requesting the fragment, first authentication code token, it plays expired time es and dynamic specifies the encryption version version of cipher mode.The present invention improves the difficulty that technology packet capturing plays string, improves the threshold of stolen chain technology, reduces the number of requests that stolen chain plays, and energy effective protection content copyright is not encroached on, and can reduce video platform bandwidth cost payout and server resource consumption.
Description
Technical field
It prevents from stealing chain technology the present invention relates to the program request of Streaming Media, and in particular to a kind of network video-on-demand, which prevents from stealing chain, to be broadcast
Method, system and the medium put.
Background technique
Currently, network video-on-demand url (such as hls/dash) is general by the way of encrypting in advance, add in playing string
Enter encrypted fields, then server background or CDN authentication play the encrypted fields of string come the certification that accesses.But it is existing
There is video platform to play authentication mechanism, entire video file can be obtained using technological means packet capturing and play string, then
Simulation playing request can obtain the video content on video platform, to steal video content protected by copyright.Largely
Illegal chain of stealing requests to increase platform bandwidth cost and server resource, causes serious economic loss.
Summary of the invention
The technical problem to be solved in the present invention: in view of the above problems in the prior art, it is anti-to provide a kind of network video-on-demand
Method, system and medium that chain plays only are stolen, the present invention is after obtaining fragment index file, in client section dynamic encryption fragment
File request url, and each fragment request cipher mode is also dynamically, to improve the difficulty that technology packet capturing plays string, is improved
The threshold of stolen chain technology reduces the number of requests that stolen chain plays, can effective protection content copyright do not encroached on, can
Reduce video platform bandwidth cost payout and server resource consumption.
In order to solve the above-mentioned technical problem, the technical solution adopted by the present invention are as follows:
A kind of method that network video-on-demand prevents robber's chain from playing, implementation steps include:
1) client to play rear end request fragment index file；
2) client is for each of fragment index file fragment, according to the slicing files name filename of the fragment
Dynamic specifies cipher mode, according to the slicing files name filename of the fragment, plays expired time es using the encryption of selection
Mode, which encrypts, generates the first authentication code token, and sends when requesting the fragment slicing files name filename of the fragment, the
One authentication code token, the encryption version version for playing expired time es and the specified cipher mode of dynamic.
Optionally, the detailed step of cipher mode is specified in step 2) according to the slicing files name filename dynamic of the fragment
Suddenly include:
2.1) key group periodically is requested to issue source in advance, obtains at least one key group, and each key group band
There is corresponding encryption version version, and obtains a newest key group as current key from the key group of request
Group；
2.2) when needing the slicing files name filename dynamic according to the fragment to specify cipher mode, basis is worked as first
Deprecated state of whether abandoning in preceding key group judges whether the key group is abandoned, if being abandoned
It jumps and executes step 2.1) update current key group；Otherwise, it jumps and performs the next step；
2.3) cipher mode is dynamically specified in current key group according to the slicing files name filename of the fragment.
Optionally, the detailed step of step 2.3) includes:
2.3.1 Hash operation), which is carried out, for the slicing files name filename of the fragment is mapped to cipher mode call number
index；
2.3.2 it) will be mapped to the sequence of each cipher mode carried in cipher mode call number index and current key group
Number seq is compared, and finds corresponding cipher mode and as specified cipher mode.
Optionally, the cipher mode is key-encryption method pair, and the information of the key-encryption method pair includes close
The call number seq, the encryption method encrypt of key key, encryption method encrypt and the cipher mode are for according to close
Key key and input character string encrypt to obtain cryptographic calculation result.
Optionally, playing response of step of the rear end after the fragment request for receiving client sending includes:
S1 the parameter carried in fragment request) is obtained；
S2) judge whether parameter is complete, refuse to service if parameter is imperfect and exit；Otherwise it jumps in next step；
S3) whether detection broadcasting expired time es is expired, refuses to service and exit if broadcasting expired time es is expired；
Otherwise it jumps in next step；
S4 corresponding cipher mode) is determined according to encryption version version；
S5) added according to the slicing files name filename of the fragment, broadcasting expired time es according to determining cipher mode
It is dense at the second authentication code token_new；
S6) judge whether the first authentication code token, the second authentication code token_news are consistent, refuse if inconsistent
It services and exits；Otherwise determine that the fragment request for legitimate service, responds the fragment request.
Optionally, step S4) detailed step include:
S4.1 corresponding key group) is determined according to encryption version version；
S4.2) judge whether the key group is expired according to the expired time expiration in determining key group,
Refuse to service and exit if expired；Otherwise it jumps in next step；
S4.3 corresponding cipher mode) is determined in the key group according to the slicing files name filename of the fragment.
Optionally, step S4.3) detailed step include:
S4.3.1 Hash operation), which is carried out, for the slicing files name filename of the fragment is mapped to cipher mode call number
index；
S4.3.2 it) will be mapped to the sequence of each cipher mode carried in cipher mode call number index and the key group
Number seq is compared, and finds corresponding cipher mode and as specified cipher mode.
The system for stealing chain broadcasting, including computer equipment, the calculating are prevented the present invention also provides a kind of network video-on-demand
Machine equipment, which is programmed to perform aforementioned network video on demand of the present invention, prevents the step of stealing the method that chain plays.
The system for stealing chain broadcasting, including computer equipment, the calculating are prevented the present invention also provides a kind of network video-on-demand
The method that aforementioned network video on demand of the present invention prevents from stealing chain broadcasting that is programmed to perform is stored on the storage medium of machine equipment
Computer program.
The present invention also provides a kind of computer readable storage medium, it is stored with and is programmed on the computer readable storage medium
Prevent from stealing the computer program for the method that chain plays to execute aforementioned network video on demand of the present invention.
Compared to the prior art, the present invention has an advantage that
The present invention requests url after obtaining fragment index file, in client section dynamic encryption slicing files, for fragment
Each of index file fragment specifies cipher mode according to the slicing files name filename dynamic of the fragment, according to this
The slicing files name filename of fragment, expired time es is played using cipher mode encryption the first authentication code of generation of selection
Token, and send when requesting the fragment slicing files name filename of the fragment, the first authentication code token, play it is expired
Time es and dynamic specify the encryption version version of cipher mode, therefore each fragment request cipher mode is also dynamic
State, the difficulty that technology packet capturing plays string is improved, the threshold of stolen chain technology is improved, reduces the request that stolen chain plays
Quantity, energy effective protection content copyright are not encroached on, and video platform bandwidth cost payout and server resource consumption can be reduced.
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 for the method that the present embodiment network video-on-demand prevents robber's chain from playing include:
1) client (such as player or SDK etc.) to play rear end request fragment index file (such as m3u8,
The files such as mpd)；
2) client is for each of fragment index file fragment, according to the slicing files name filename of the fragment
Dynamic specifies cipher mode, according to the slicing files name filename of the fragment, plays expired time es using the encryption of selection
Mode, which encrypts, generates the first authentication code token, and sends when requesting the fragment slicing files name filename of the fragment, the
One authentication code token, the encryption version version for playing expired time es and the specified cipher mode of dynamic.By above-mentioned
Mode requests url in player end dynamic encryption slicing files, and every after player or SDK obtain m3u8, mpd file
A fragment request cipher mode is also that dynamic generates, different, improves the technical difficulty that packet capturing plays string, can effectively reduce
Chain playing request is stolen, maintenance content copyright reduces bandwidth cost, reduces server resource consumption.
In the present embodiment, the url form of client request fragment are as follows:
Http:// uri? token=xxx&version=xx&es=1551321187
Wherein, uri is request target address (including slicing files name filename), and token is the first authentication code,
Version is encryption version number, and es is to play expired time, and xxx and xx represent a specific value.In addition, slicing files
Name filename can also be used as token, version, es independently of the independent parameter of uri.
As a kind of common example signal, encryption generates the function expression of the first authentication code token in the present embodiment
Are as follows:
Token=hex (encrypt (key+filename+es))
Wherein, hex is hexadecimal transfer function, and filename is slicing files name, and es is to play expired time, key
For the Crypted password of the corresponding cipher mode of determination, encrypt is the encryption method for determining corresponding cipher mode.
In the present embodiment, the detailed of cipher mode is specified according to the slicing files name filename dynamic of the fragment in step 2)
Carefully step includes:
2.1) key group periodically is requested to issue source in advance, obtains at least one key group, and each key group band
There is corresponding encryption version version, and obtains a newest key group as current key from the key group of request
Group；
It can according to need and set to the mode of issue source request key group, (half an hour can determine for example, by using periodically
System), or need to request just to be handled when fragment.It in contrast, can by the way of periodically requesting key group to issue source
To reduce the burden of issue source, and it can be improved the efficiency of fragment request encryption.
2.2) when needing the slicing files name filename dynamic according to the fragment to specify cipher mode, basis is worked as first
Deprecated state of whether abandoning in preceding key group judges whether the key group is abandoned, if being abandoned
It jumps and executes step 2.1) update current key group；Otherwise, it jumps and performs the next step；B) if it find that key group information is revealed,
The key group can be forced to abandon by deprecated state；
2.3) cipher mode is dynamically specified in current key group according to the slicing files name filename of the fragment.
In the present embodiment, made by authentication management service API (address are as follows: https: //api.mgtv.com) on network
Key group is issued for issue source, the generation and publication of key group are responsible in authentication management service, log in and return to token, request key
Need this token as safety verification when group information.
By calling api interface (/v1/auth/login) and incoming username and password, it is assumed that visitor tests account number and (uses
Name in an account book (user): test password (password): test1234), the code sample for obtaining token is as follows:
In the present embodiment, the information field of key group is as shown in table 1:
The information word segment table of table 1, key group.
Referring to table 1, multiple groups key group can be created, wherein every group key group expired time and next key group validity period
There is lap, referred to herein as window, this window is used to balance the time that old key group failure comes into force with new key group
Length.Such as the expired time of key group 1 are as follows: 2019-02-10 12:00:00, the entry-into-force time of key group 2 are 2019-02-
10 00:00:00, this window time is exactly 12 hours, and in window time, encryption can be transferred to key from key group 1
Group 2 does not influence existing program request and plays authentication.
In the present embodiment, key group is requested, then backstage " return " key" group information (json format)
Request the code sample of the mode of key group as follows:
R=`curl-X GET " https: //api.mgtv.com/v1/auth/keys "
-H"X-MGTV-Token:${token}"\
-H"Content-Type:application/json"`
It is as follows to return to the code sample that the information of multiple key group informations is shown:
In key-method pair above- mentioned information, seq indicates serial number, is incremented by since 0；Key indicates Crypted password, 16 words
Save length；Encrypt indicate encryption method, can according to need using encryption method known in sha1, md5 etc. or other make by oneself
The encryption method etc. of justice, ginseng is shown in Table 2.
Table 2: key-method pair field information table
| Field | Meaning | Explanation |
| seq | Serial number | It is incremented by since 0 |
| key | Crypted password | 16 byte lengths |
| encrypt | Encryption method | The methods of sha1, md5 |
It may include multiple key-methods pair in each key group, ginseng is shown in Table 3.
Table 3: key-encryption method is to array example.
Before the failure of existing key group, need to issue new key group, it is desirable that its expired time is greater than newest key group
There are overlapping time windows between adjacent key group in expired time.If it find that key group information is revealed, this can be forced
Key group is abandoned, and field deprecated:on is arranged.Player order program service detects deprecated when obtaining key group
Field, discovery are abandoned mark, are not then used.
In the present embodiment, the detailed step of step 2.3) includes:
2.3.1 Hash operation), which is carried out, for the slicing files name filename of the fragment is mapped to cipher mode call number
index；
Illustrate as a kind of common example, the operation mode of cipher mode call number index in the present embodiment are as follows:
Index=hash (md5 (filename)) %N
Wherein N refers to cipher mode that the corresponding key group of encryption version version includes (key-encryption method to) number
Amount, hash are hash function, and md5 refers to md5 functional operation, and filename is slicing files name.
2.3.2 it) will be mapped to the sequence of each cipher mode carried in cipher mode call number index and current key group
Number seq is compared, and finds corresponding cipher mode and as specified cipher mode.
In the present embodiment, cipher mode is key-encryption method pair, and the information of the key-encryption method pair includes close
The call number seq, the encryption method encrypt of key key, encryption method encrypt and the cipher mode are for according to close
Key key and input character string encrypt to obtain cryptographic calculation result.
In the present embodiment, rear end (vod server or CDN manufacturer) is played after the fragment request for receiving client sending
Response of step include:
S1 the parameter carried in fragment request) is obtained；
S2) judge whether parameter is complete, refuse to service if parameter is imperfect and exit；Otherwise it jumps in next step；
S3) whether detection broadcasting expired time es is expired, refuses to service and exit if broadcasting expired time es is expired；
Otherwise it jumps in next step；
S4 corresponding cipher mode) is determined according to encryption version version；
S5) added according to the slicing files name filename of the fragment, broadcasting expired time es according to determining cipher mode
It is dense at the second authentication code token_new；
S6) judge whether the first authentication code token, the second authentication code token_news are consistent, refuse if inconsistent
It services and exits；Otherwise the fragment request is determined for legitimate service, is responded the fragment request and (is provided the order program service of the fragment
Or CDN provides video-on-demand service).
In the present embodiment, step S4) detailed step include:
S4.1 corresponding key group) is determined according to encryption version version；
S4.2) judge whether the key group is expired according to the expired time expiration in determining key group,
Refuse to service and exit if expired；Otherwise it jumps in next step；
S4.3 corresponding cipher mode) is determined in the key group according to the slicing files name filename of the fragment.
In addition, server-side can also as needed carry out the deprecated state of whether abandoning in determining key group
It responds, for example, if some key group setting deprecated state is more than preset time, then determines the key of client
Group is not updated, therefore, it is determined that the client is to steal chain user, can be reduced and be stolen chain loss.
In the present embodiment, step S4.3) detailed step include:
S4.3.1 Hash operation), which is carried out, for the slicing files name filename of the fragment is mapped to cipher mode call number
index；
Illustrate as a kind of common example, the operation mode of cipher mode call number index in the present embodiment are as follows:
Index=hash (md5 (filename)) %N
Wherein N refers to cipher mode that the corresponding key group of encryption version version includes (key-encryption method to) number
Amount, hash are hash function, and md5 refers to md5 functional operation, and filename is slicing files name.
S4.3.2 it) will be mapped to the sequence of each cipher mode carried in cipher mode call number index and the key group
Number seq is compared, and finds corresponding cipher mode and as specified cipher mode.
As a kind of common example signal, encryption generates the function table of the second authentication code token_new in the present embodiment
Up to formula are as follows:
Token_new=hex (encrypt (key+filename+es))
Wherein, hex is hexadecimal transfer function, and filename is slicing files name, and es is to play expired time, key
For the Crypted password of the corresponding cipher mode of determination, encrypt is the encryption method for determining corresponding cipher mode.
In addition, the present embodiment also provides a kind of system that network video-on-demand prevents robber's chain from playing, including computer equipment,
The computer equipment, which is programmed to perform the present embodiment aforementioned network video on demand, prevents the step of stealing the method that chain plays.Its
In, for step 1)~2) for, the computer equipment be the client with player or SDK, for step S1)~
S6 for), then the computer equipment is the computer of serving backend.
The present embodiment also provides a kind of system that network video-on-demand prevents robber's chain from playing, including computer equipment, the meter
Calculate machine equipment storage medium on be stored be programmed to perform the present embodiment aforementioned network video on demand prevent steal chain play
The computer program of method.Wherein, for step 1)~2) for, which is the visitor with player or SDK
Family end, for step S1)~S6) for, then the computer equipment is the computer of serving backend.
The present embodiment also provides a kind of computer readable storage medium, is stored with and is compiled on the computer readable storage medium
Journey prevents from stealing the computer program for the method that chain plays to execute the present embodiment aforementioned network video on demand.
It should be understood by those skilled in the art that, embodiments herein can provide as method, system or computer program
Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the application
Apply the form of example.Moreover, it wherein includes the computer of computer usable program code that the application, which can be used in one or more,
The computer program implemented in usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) produces
The form of product.The application is referring to method, the process of equipment (system) and computer program product according to the embodiment of the present application
Figure and/or block diagram describe.It should be understood that every one stream in flowchart and/or the block diagram can be realized by computer program instructions
The combination of process and/or box in journey and/or box and flowchart and/or the block diagram.It can provide these computer programs
Instruct the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce
A raw machine, so that being generated by the instruction that computer or the processor of other programmable data processing devices execute for real
The device for the function of being specified in present one or more flows of the flowchart and/or one or more blocks of the block diagram.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices work in a specific way
In the computer-readable memory of work, so that it includes command device that instruction stored in the computer readable memory, which generates,
Manufacture, the command device are realized in one or more flows of the flowchart and/or one or more blocks of the block diagram
In specify function.These computer program instructions also can be loaded onto a computer or other programmable data processing device, and make
It obtains and executes series of operation steps on a computer or other programmable device to generate computer implemented processing, thus counting
The instruction executed on calculation machine or other programmable devices is provided for realizing in one or more flows of the flowchart and/or side
The step of function of being specified in block diagram one box or multiple boxes.
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 network video-on-demand prevents from stealing the method that chain plays, it is characterised in that implementation steps include:
1) client to play rear end request fragment index file；
2) client is for each of fragment index file fragment, according to the slicing files name filename dynamic of the fragment
Specified cipher mode according to the slicing files name filename of the fragment, plays expired time es using the cipher mode of selection
Encryption generates the first authentication code token, and sends when requesting the fragment slicing files name filename of the fragment, first recognizes
It demonstrate,proves code token, play expired time es and the encryption version version of the specified cipher mode of dynamic.
2. network video-on-demand according to claim 1 prevents from stealing the method that chain plays, which is characterized in that root in step 2)
The detailed step for specifying cipher mode according to the slicing files name filename dynamic of the fragment includes:
2.1) key group periodically is requested to issue source in advance, obtains at least one key group, and each key group has pair
The encryption version version answered, and a newest key group is obtained as current key group from the key group of request；
2.2) when needing the slicing files name filename dynamic according to the fragment to specify cipher mode, first according to current close
Deprecated state of whether abandoning in key group judges whether the key group is abandoned, and jumps if being abandoned
It executes step 2.1) and updates current key group；Otherwise, it jumps and performs the next step；
2.3) cipher mode is dynamically specified in current key group according to the slicing files name filename of the fragment.
3. network video-on-demand according to claim 2 prevents from stealing the method that chain plays, which is characterized in that step 2.3)
Detailed step includes:
2.3.1 Hash operation), which is carried out, for the slicing files name filename of the fragment is mapped to cipher mode call number
index；
2.3.2 it) will be mapped to the serial number of each cipher mode carried in cipher mode call number index and current key group
Seq is compared, and finds corresponding cipher mode and as specified cipher mode.
4. network video-on-demand according to claim 2 prevents from stealing the method that chain plays, which is characterized in that the encryption side
Formula be key-encryption method pair, the information of the key-encryption method pair include key key, encryption method encrypt and
The call number seq, the encryption method encrypt of the cipher mode according to key key and input character string for encrypting to obtain
Cryptographic calculation result.
5. network video-on-demand described according to claim 1~any one of 4 prevents from stealing the method that chain plays, feature exists
In playing response of step of the rear end after the fragment request for receiving client sending includes:
S1 the parameter carried in fragment request) is obtained；
S2) judge whether parameter is complete, refuse to service if parameter is imperfect and exit；Otherwise it jumps in next step；
S3) whether detection broadcasting expired time es is expired, refuses to service and exit if broadcasting expired time es is expired；Otherwise
It jumps in next step；
S4 corresponding cipher mode) is determined according to encryption version version；
S5 life) is encrypted according to determining cipher mode according to the slicing files name filename of the fragment, broadcasting expired time es
At the second authentication code token_new；
S6) judge whether the first authentication code token, the second authentication code token_news are consistent, refuse to service if inconsistent
And it exits；Otherwise determine that the fragment request for legitimate service, responds the fragment request.
6. network video-on-demand according to claim 5 prevents from stealing the method that chain plays, which is characterized in that step S4)
Detailed step includes:
S4.1 corresponding key group) is determined according to encryption version version；
S4.2) judge whether the key group is expired according to the expired time expiration in determining key group, if
It is expired, refuse to service and exit；Otherwise it jumps in next step；
S4.3 corresponding cipher mode) is determined in the key group according to the slicing files name filename of the fragment.
7. network video-on-demand according to claim 6 prevents from stealing the method that chain plays, which is characterized in that step S4.3)
Detailed step include:
S4.3.1 Hash operation), which is carried out, for the slicing files name filename of the fragment is mapped to cipher mode call number
index；
S4.3.2 it) will be mapped to the serial number seq of each cipher mode carried in cipher mode call number index and the key group
It is compared, finds corresponding cipher mode and as specified cipher mode.
8. a kind of network video-on-demand prevents from stealing the system that chain plays, including computer equipment, which is characterized in that the computer is set
Standby the step of being programmed to perform the method that network video-on-demand described in any one of claim 1~7 prevents robber's chain from playing.
9. a kind of network video-on-demand prevents from stealing the system that chain plays, including computer equipment, which is characterized in that the computer is set
It is stored on standby storage medium and is programmed to perform network video-on-demand described in any one of claim 1~7 and prevents from stealing
The computer program for the method that chain plays.
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
Network video-on-demand described in any one of perform claim requirement 1~7 prevents from stealing the computer program for the method that chain plays.
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| CN201910243115.6A CN109996095B (en) | 2019-03-28 | 2019-03-28 | Method, system and medium for preventing stealing link playing in network video on demand |
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| CN201910243115.6A CN109996095B (en) | 2019-03-28 | 2019-03-28 | Method, system and medium for preventing stealing link playing in network video on demand |
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| CN109996095B CN109996095B (en) | 2023-02-24 |
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