CN109547198A - The method and system of network transmission video file - Google Patents
The method and system of network transmission video file Download PDFInfo
- Publication number
- CN109547198A CN109547198A CN201811367842.5A CN201811367842A CN109547198A CN 109547198 A CN109547198 A CN 109547198A CN 201811367842 A CN201811367842 A CN 201811367842A CN 109547198 A CN109547198 A CN 109547198A
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- video file
- terminal
- server
- module
- identifying code
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/06—Protocols specially adapted for file transfer, e.g. file transfer protocol [FTP]
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/60—Protecting data
- G06F21/602—Providing cryptographic facilities or services
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/04—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks
- H04L63/0428—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the data content is protected, e.g. by encrypting or encapsulating the payload
- H04L63/0457—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the data content is protected, e.g. by encrypting or encapsulating the payload wherein the sending and receiving network entities apply dynamic encryption, e.g. stream encryption
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/08—Network architectures or network communication protocols for network security for authentication of entities
- H04L63/083—Network architectures or network communication protocols for network security for authentication of entities using passwords
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/08—Network architectures or network communication protocols for network security for authentication of entities
- H04L63/0876—Network architectures or network communication protocols for network security for authentication of entities based on the identity of the terminal or configuration, e.g. MAC address, hardware or software configuration or device fingerprint
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/12—Applying verification of the received information
- H04L63/123—Applying verification of the received information received data contents, e.g. message integrity
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/14—Session management
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/08—Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords
- H04L9/0861—Generation of secret information including derivation or calculation of cryptographic keys or passwords
Abstract
The present invention discloses a kind of System and method for of network transmission video file, at least one terminal of communication connection can be established including server end and with server end, the server end has service server and data server: the data server includes video database and cipher key store: the service server includes authentication module, identifying code generation module and key production module: the terminal is configured to pass through in response to authentication, to download video files request is proposed to the server end and request data is encrypted according to the identifying code, request described in the received server-side simultaneously confirms downloading request according to identifying code, corresponding video file and dynamic key is requested to be sent to terminal downloading, the terminal includes encrypting module and playing module.Conducive to the present invention can effectively settlement server computing resource utilize the problem of and can guarantee file safety.
Description
Technical field
The present invention relates to internet data communication technical fields, in particular to a kind of side of network transmission video file
Method.
Background technique
With the high speed development of computer technology, network technology and the communication technology, the network user (especially terminal user)
Video file quickly and easily can be searched and obtain, due to the popularity that these files itself are stored and propagated, this to regard
The stealing, distort of frequency file, illegal transmissions and the problems such as propagating, are further serious, damage the just rights and interests of author.For video
The importance and generality of the encipherment protection of file, are also increasingly taken seriously.
Currently, the encryption method majority of network transmission video file concentrates on server end, pass through the methods of Encryption Algorithm
The ciphering process of video file is completed in server, the video file in database is encrypted or Partial encryption completely,
Then other modules are added in client or server and increase safety.Such as CN101572805B disclose it is a kind of safe
Video transmission system, video data are encrypted in server, are decrypted in client, and joined watermark embedding module
Increase safety.CN103647971B discloses encryption and decryption approaches and system based on transmission of video, complete in the server
At fast transcoding encryption technology, the transmission and encryption of each video use safe Sandboxing complete independently.
CN105939491A discloses a kind of playback method of video-encryption decryption, includes agency service plug-in unit in the system, by acting on behalf of
Service plug obtains encrypted video stream from server, and client, which passes through agency service plug-in unit again and is decrypted, then to be played.
But sharply increasing with the large datas file such as video, carrying out encrypted work in server will affect database
The working efficiency of server system, makes system can't bear the heavy load.Ciphering process can occupy a large amount of computing resources of server, thus reduce
Server responds the speed of other instructions, for example multiple users apply for that speed when obtaining video file becomes in client simultaneously
Slowly, usage experience is influenced.
In general, video file is stored in local temporary folder by network transmission, is that entire video file passes
The defeated highest part of process risk, it is therefore desirable to guarantee the safety of this file, as far as possible to guarantee the peace of data file
Quan Xing.
Summary of the invention
The purpose of the present invention is directed to the problem of a kind of effective settlement server computing resource utilizes and can guarantee file
Safety network transmission video file System and method for.
To achieve the above object, the technical solution adopted in the present invention is as follows:
The system of network transmission video file including server end and can establish communication connection at least with server end
One terminal,
The server end has service server and data server:
The data server includes video database and cipher key store:
Video file of the video database to store specified format；
The cipher key store is to store dynamic key corresponding with video file；
The service server includes authentication module, identifying code generation module and key production module:
Authentication module is arranged to be tested according to what is received come the subscriber authentication request progress identity of self terminal
Card；
Identifying code generation module is arranged to pass through in response to authentication, and it is corresponding to generate filed a request terminal
Unique identifying code, and return to terminal；The identifying code is configured to logical in the terminal and server end filed a request
Communication data is encrypted with the identifying code in the set time period of letter；
Key production module, the dynamic key of the video file for generating specified format；
The terminal is configured to pass through in response to authentication, and Xiang Suoshu server end proposes to download video files request
And request data is encrypted according to the identifying code, request described in the received server-side is simultaneously asked according to identifying code confirmation downloading
It asks, requests corresponding video file and dynamic key to be sent to terminal downloading, the terminal includes encrypting module and broadcasting
Module: the encrypting module is for encrypting it according to dynamic key in the video file for receiving downloading, in terminal
Form local encryption file；The playing module is provided with decryption component, which passes through before playing video file
Playing video file after decryption component decryption.
In some embodiments, the service server further includes source file processing module and source file database, source document
Part processing module is arranged for carrying out format checking and conversion, source file data to the source video file at end of uploading onto the server
The source video file is kept in as buffer area in library, and: if source video file is specified format, dynamic key is generated,
Data server is stored in together with the source video file；If source video file is non-specified format, specified lattice are first changed into
Formula regenerates dynamic key, and data server is stored in together with the video file after conversion.
In some embodiments, the terminal is additionally provided with cleaning modul, is configured in response to the video text that finishes playing
The ciphertext library is cleared up after part.
A kind of disclosure according to the present invention, it is also proposed that method of network transmission video file, comprising the following steps:
Terminal to server proposes authentication request；
It is requested described in server authentication and returns the result message to the terminal, wherein passing through in response to authentication, institute
Stating results messages includes the corresponding unique identifying code of by server generation, filed a request terminal；The identifying code is matched
It is set in the set time period that the terminal filed a request is communicated with server end and communication data is carried out with the identifying code
Encryption；
Terminal to server proposes that video file downloads request；
Server sends corresponding video file and video according to the corresponding identifying code decryption downloading request content of terminal
The corresponding dynamic key of file is to terminal；
Terminal carries out encryption to video file according to dynamic key and forms encryption after receiving video file and dynamic key
The ciphertext library in the memory of terminal local is arrived in file, storage；
Before terminal plays video file, pass through player plays after encryption file is decrypted.
In further embodiment, on the terminal, video file is completed in response to player plays, then described in cleaning
Ciphertext library.
By above technical scheme, remarkable advantage of the invention is:
1, video file encryption process is completed in client, has saved server computing resource, improves server work effect
It is faster efficient when client is using video file to make user, while may insure its safety for rate, protects the copyright of file
And secret, it prevents from arbitrarily being stolen, shifted and being plagiarized, plagiarize
2, the identifying code verifying of communication process, it is ensured that all communication numbers of terminal and server in this landing time
It is all encrypted by Key according to interaction, guarantees the privacy of communication；
3, video file in server end to specify unified format to store, and server end use stored in clear,
Convenient for the calling and processing in later period, traditional being stored encrypted in caused by server is avoided to be difficult to be multiplexed and be difficult to form public affairs with the later period
Use database；Both guarantee integrality and safety that video file is effectively stored in server end, while downloading to terminal
All pass through symmetric encipherment algorithm to all data afterwards to encrypt, ensures that data will not be stolen use.
It should be appreciated that as long as aforementioned concepts and all combinations additionally conceived described in greater detail below are at this
It can be viewed as a part of the subject matter of the disclosure in the case that the design of sample is not conflicting.In addition, required guarantor
All combinations of the theme of shield are considered as a part of the subject matter of the disclosure.
Can be more fully appreciated from the following description in conjunction with attached drawing present invention teach that the foregoing and other aspects, reality
Apply example and feature.The features and/or benefits of other additional aspects such as illustrative embodiments of the invention will be below
Description in it is obvious, or learnt in practice by the specific embodiment instructed according to the present invention.
Detailed description of the invention
Attached drawing is not intended to drawn to scale.In the accompanying drawings, identical or nearly identical group each of is shown in each figure
It can be indicated by the same numeral at part.For clarity, in each figure, not each component part is labeled.
Now, example will be passed through and the embodiments of various aspects of the invention is described in reference to the drawings, in which:
Fig. 1 is the system diagram of network transmission video file of the invention.
Fig. 2 is the flow chart of network transmission video file of the invention.
Fig. 3 is the flow chart of end-user request uploaded videos file.
Fig. 4 is the flow chart of end-user request to download video files.
Fig. 5 is the schematic diagram of document processing module.
Specific embodiment
In order to better understand the technical content of the present invention, special to lift specific embodiment and institute's accompanying drawings is cooperated to be described as follows.
Various aspects with reference to the accompanying drawings to describe the present invention in the disclosure, shown in the drawings of the embodiment of many explanations.
It is not intended to cover all aspects of the invention for embodiment of the disclosure.It should be appreciated that a variety of designs and reality presented hereinbefore
Those of apply example, and describe in more detail below design and embodiment can in many ways in any one come it is real
It applies, this is to should be conception and embodiment disclosed in this invention to be not limited to any embodiment.In addition, disclosed by the invention one
A little aspects can be used alone, or otherwise any appropriately combined use with disclosed by the invention.
In conjunction with shown in Fig. 1-Fig. 4, the system of the network transmission video file of the embodiment of the present invention includes server end 100
And at least one terminal 200, terminal 200 can establish communication connection by network and with server end, carry out the transmission of data
And communication.
The array that there is server end 100 at least one Cloud Server or multiple Cloud Servers to form, to provide body
Part verifying, the storage of video file, video file downloading and other service request processing.
Terminal 200, such as move NB (Note Book), intelligent mobile phone terminal (Smart Phone), intelligent mobile terminal
(PD, Portable Device) etc. has processor, memory, display, I/O interface unit, communication unit, input and output
Unit etc., they are usually carried out the electric connection of physics by system bus, carry out the transmission and interaction of data, realized at data
Reason and service.
In some instances, application program is stored in the memory of terminal 200, with called by processor with execute one or
Multiple processes are to realize the function and service of program.For example, encipheror, player application etc..
In conjunction with the example of Fig. 1, server end 100 has service server 110 and data server 120.
Service server 110 includes authentication module 111, identifying code generation module 112 and key production module
113。
Authentication module 111 is arranged to carry out body according to what is received come the subscriber authentication request of self terminal
Cryptographic check verifying especially may be selected in part verifying, verification mode, such as with 6 or more numbers, letter and their combination
The password string of formation.It certainly, in a further embodiment can also be raw using fingerprint authentication, face recognition verifying etc.
Object authentication mode carries out authentication.
Identifying code generation module 112 is arranged to pass through in response to authentication, generates filed a request terminal pair
The unique identifying code answered, and return to terminal.
In the present embodiment, identifying code generated is configured to set what the terminal filed a request was communicated with server end
It fixes time and communication data is encrypted with the identifying code in the period.This period of time is especially set as the time of this login
In range.
Identifying code preferably uses the form of fixed-length string, in favor of quickly verifying.
Key production module 113, the dynamic key of the video file for generating specified format.Each video file is corresponding
One dynamic key forms data link table storage to server end.Video file and dynamic key are stored to data server 120
It is interior.
Data server 120 includes video database 121 and cipher key store 122: video database 121 is specified to store
The video file of format；Cipher key store 122 is to store dynamic key corresponding with video file.
In conjunction with Fig. 2, terminal 200 is configured to pass through in response to authentication, can when wishing that download video files plays
To download video files request is proposed to server end 100 and request data is encrypted according to the identifying code received.
The service server 110 of server end receives downloading request and confirms downloading request according to identifying code, and downloading is asked
Corresponding video file and dynamic key is asked to be sent to terminal 200.Terminal is local again upon receipt to be encrypted to be formed
Then broadcasting is decrypted by dynamic key when playing in local ciphertext.
Terminal 200 includes encrypting module 210, playing module 220 and the ciphertext library 230 being set in memory.
Encrypting module 210 is for encrypting it according to dynamic key in the video file for receiving downloading, at end
End forms local encryption file；Playing module 220 is provided with decryption component, which leads to before playing video file
Cross playing video file after decryption component is decrypted.
Ciphertext library 230, for storing the video file of encryption.
Preferably, encrypting module 210 is encrypted using symmetric encipherment algorithm.
Preferably, terminal 200 is additionally provided with cleaning modul 240, is configured in response to clear after the video file that finishes playing
The ciphertext library is managed, can so clear up video file and dynamic key in time after terminal user has used video file, is protected
Protect the privacy of video file.
In conjunction with Fig. 1, service server 110 further includes source file processing module 114 and source file database 115.Source file
Processing module 114 is arranged for carrying out format checking and conversion, source document number of packages to the source video file at end of uploading onto the server
Source video file is kept in as buffer area according to library 115.
If source video file is specified format, dynamic key is generated, is stored in data service together with source video file
Device 120；View if source video file is non-specified format, after first changing into specified format regeneration dynamic key, with conversion
Frequency file is stored in data server 120 together.So to ensure the uniformity of format, conducive to common data base is formed, facilitate system
One downloading is called and the consistency of client uses.
In some specific examples, document processing module 114, including format checking module 114A and format modulus of conversion
Block 114B, format checking module is to identify the format for the source video file uploaded onto the server to determine whether specified lattice
Formula, format converting module are converted into the video file of specified format to the source video file by non-designated format.
Preferably, specified format file is the video file of MP4 format.
As shown in connection with fig. 3, user terminal sends uploaded videos request to service server, and service server is first to user's body
Part is verified, and when identity information is illegal, service server meeting feedback information informs user terminal, when subscriber identity information is logical
After crossing verifying, user terminal can then start to upload source video file；Service server receives the source video text of user's upload
After part, specified format file being judged whether it is, if format is not inconsistent, source video file being formatted, key is raw later
The correspondence dynamic key of video file is then generated at module, key is saved to database server cipher key store, the view of specified format
Frequency file is saved to the clear data library of data server, i.e. video database；If regard upload source video file format as
Specified format, then directly to video database, key production module then generates the correspondence dynamic key of video file, key for storage
It saves to database server cipher key store.
As shown in connection with fig. 1, the method for the network transmission video file of another aspect of the present invention, comprising:
Terminal to server proposes authentication request；
Then it is requested described in server authentication and returns the result message to the terminal, wherein logical in response to authentication
It crosses, the results messages include the corresponding unique identifying code of by server generation, filed a request terminal；The identifying code
It is configured in the set time period that the terminal filed a request is communicated with server end with the identifying code to communication data
It is encrypted；
Then, terminal to server proposes that video file downloads request；
Server sends corresponding video file and video according to the corresponding identifying code decryption downloading request content of terminal
The corresponding dynamic key of file is to terminal；
Terminal carries out encryption to video file according to dynamic key and forms encryption after receiving video file and dynamic key
The ciphertext library in the memory of terminal local is arrived in file, storage；
Before terminal plays video file, pass through player plays after encryption file is decrypted.
Preferably, in terminal, video file is completed in response to player plays, then clears up the ciphertext library.
As shown in figure 3, this Figure illustrates the exemplary flows of client request downloading playing video file.
User terminal sends downloading to service server and plays video request, and authentication module tests user identity
Card, when identity information is illegal, service server feedback information informs user, after subscriber identity information is by verifying, user
Can then it start from video database to download video files；Data server transmits selected video file and its dynamic key to end
End, after terminal receives video file and its dynamic key, is encrypted video file using symmetric encipherment algorithm, and storage is extremely
Ciphertext library；When terminal calls video file data in the ciphertext library, it is close that decryption playing module recalls the corresponding dynamic of video file
Key starts video file to be decrypted broadcasting.After having used video file, terminal is cleared up corresponding in cryptograph files folder phase automatically
Video file and dynamic key.
Through the above scheme, realize that all data all pass through symmetric cryptography to the integrality of data and the guarantee of safety
Algorithm is encrypted, and ensures that data will not be stolen use；Ciphering process is completed in client simultaneously, is saved server and is calculated money
Server working efficiency is improved in source, it is faster efficient when client is using video file to make user, while may insure its peace
Quan Xing.
Although the present invention has been disclosed as a preferred embodiment, however, it is not to limit the invention.Skill belonging to the present invention
Has usually intellectual in art field, without departing from the spirit and scope of the present invention, when can be used for a variety of modifications and variations.Cause
This, the scope of protection of the present invention is defined by those of the claims.
Claims (10)
1. a kind of system of network transmission video file, which is characterized in that can establish including server end and with server end
At least one terminal of communication connection, in which:
The server end has service server and data server:
The data server includes video database and cipher key store:
Video file of the video database to store specified format；
The cipher key store is to store dynamic key corresponding with video file；
The service server includes authentication module, identifying code generation module and key production module:
Authentication module is arranged to carry out authentication according to what is received come the subscriber authentication request of self terminal；
Identifying code generation module is arranged to pass through in response to authentication, and it is corresponding only to generate filed a request terminal
One identifying code, and return to terminal；What the identifying code was configured to communicate in the terminal filed a request with server end
Communication data is encrypted with the identifying code in set time period；
Key production module, the dynamic key of the video file for generating specified format；
The terminal is configured to pass through in response to authentication, and Xiang Suoshu server end proposes to download video files request and root
Request data is encrypted according to the identifying code, request described in the received server-side simultaneously confirms downloading request according to identifying code,
Corresponding video file and dynamic key is requested to be sent to terminal downloading, the terminal includes encrypting module and broadcasting mould
Block:
The encrypting module is for encrypting it according to dynamic key in the video file for receiving downloading, in terminal shape
At local encryption file；
The playing module is provided with decryption component, and the playing module is before playing video file, after being decrypted by decryption component
Playing video file.
2. the system of network transmission video file according to claim 1, it is characterised in that:
The service server further includes source file processing module and source file database, and source file processing module is arranged for
Format checking and conversion are carried out to the source video file at end of uploading onto the server, source file database is temporary described as buffer area
Source video file, and: if source video file is specified format, dynamic key is generated, together with the source video file
It is stored in data server；If source video file is non-specified format, first change into specified format regeneration dynamic key, with turn
Video file after changing is stored in data server together.
3. the system of network transmission video file according to claim 2, it is characterised in that:
The document processing module, including format checking module and format converting module, format checking module to identify on
The format of the source video file of server is passed to determine whether specified format, format converting module is to by non-designated format
Source video file be converted into the video file of specified format.
4. the system of network transmission video file according to claim 1, it is characterised in that:
A ciphertext library is provided in the memory of the terminal, for storing the video file of encryption.
5. the system of network transmission video file according to claim 4, it is characterised in that:
The terminal is additionally provided with cleaning modul, is configured in response to clearing up the ciphertext library after the video file that finishes playing.
6. the system of network transmission video file according to claim 1, it is characterised in that:
The encrypting module of the terminal is encrypted using symmetric encipherment algorithm.
7. the system of network transmission video file according to claim 1, it is characterised in that:
The identifying code generation module is configured to generate identifying code by the way of fixed-length string.
8. a kind of method of network transmission video file characterized by comprising
Terminal to server proposes authentication request；
It is requested described in server authentication and returns the result message to the terminal, wherein passing through in response to authentication, the knot
Fruit message includes the corresponding unique identifying code of by server generation, filed a request terminal；The identifying code is configured to
Communication data is encrypted with the identifying code in the set time period that the terminal filed a request is communicated with server end；
Terminal to server proposes that video file downloads request；
Server sends corresponding video file and video file according to the corresponding identifying code decryption downloading request content of terminal
Corresponding dynamic key is to terminal；
Terminal carries out encryption to video file according to dynamic key and forms encryption text after receiving video file and dynamic key
The ciphertext library in the memory of terminal local is arrived in part, storage；
Before terminal plays video file, pass through player plays after encryption file is decrypted.
9. the method for network transmission video file according to claim 8, it is characterised in that:
The method more comprises the steps of: on the terminal, completes video file in response to player plays, then clears up
The ciphertext library.
10. the method for network transmission video file according to claim 8, it is characterised in that:
The identifying code is the identifying code of fixed-length string.
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| CN201811367842.5A CN109547198B (en) | 2018-11-16 | 2018-11-16 | System for network transmission video file |
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|---|---|---|---|
| CN201811367842.5A CN109547198B (en) | 2018-11-16 | 2018-11-16 | System for network transmission video file |
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| CN109547198B CN109547198B (en) | 2020-03-10 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110248166A (en) * | 2019-07-12 | 2019-09-17 | 东软集团股份有限公司 | Processing method, client, electronic equipment and the storage medium of video information |
| CN111885397A (en) * | 2020-06-17 | 2020-11-03 | 视联动力信息技术股份有限公司 | Data encryption and decryption method and device |
| CN112118208A (en) * | 2019-06-20 | 2020-12-22 | 北京沃东天骏信息技术有限公司 | Method and device for reporting data |
| CN113489729A (en) * | 2021-07-09 | 2021-10-08 | 福州数据技术研究院有限公司 | Webpage verification generation method and system based on preset video |
| CN115086730A (en) * | 2022-06-16 | 2022-09-20 | 平安国际融资租赁有限公司 | Subscription video generation method, system, computer device and medium |
| CN115361593A (en) * | 2022-08-19 | 2022-11-18 | 湖北巨字传媒有限公司 | Video equipment data secure transmission method and system |
| CN115914677A (en) * | 2022-09-19 | 2023-04-04 | 上海辰锐信息科技有限公司 | Intelligent video safety networking device and server |
| CN117454363A (en) * | 2023-12-22 | 2024-01-26 | 北京安泰伟奥信息技术有限公司 | Public accumulation fund extraction supervision method and equipment based on master-slave terminal information identification |
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