CN110035327A - A kind of safe playback method - Google Patents
A kind of safe playback method Download PDFInfo
- Publication number
- CN110035327A CN110035327A CN201910311916.1A CN201910311916A CN110035327A CN 110035327 A CN110035327 A CN 110035327A CN 201910311916 A CN201910311916 A CN 201910311916A CN 110035327 A CN110035327 A CN 110035327A
- Authority
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- China
- Prior art keywords
- sequence
- frame image
- playback method
- password value
- mentioned
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 30
- 230000008707 rearrangement Effects 0.000 claims abstract description 17
- 230000005540 biological transmission Effects 0.000 claims abstract description 11
- 238000010200 validation analysis Methods 0.000 claims abstract description 3
- 230000001174 ascending effect Effects 0.000 claims description 10
- 239000004744 fabric Substances 0.000 claims 1
- 230000006835 compression Effects 0.000 abstract description 5
- 238000007906 compression Methods 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 2
- 210000004209 hair Anatomy 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000739 chaotic effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000035772 mutation Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Classifications
-
- 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
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/234—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs
- H04N21/2347—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs involving video stream encryption
-
- 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]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
- H04N21/4405—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving video stream decryption
-
- 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]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/45—Management operations performed by the client for facilitating the reception of or the interaction with the content or administrating data related to the end-user or to the client device itself, e.g. learning user preferences for recommending movies, resolving scheduling conflicts
- H04N21/462—Content or additional data management, e.g. creating a master electronic program guide from data received from the Internet and a Head-end, controlling the complexity of a video stream by scaling the resolution or bit-rate based on the client capabilities
- H04N21/4627—Rights management associated to the content
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Computer Security & Cryptography (AREA)
- Databases & Information Systems (AREA)
- Computer Networks & Wireless Communication (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
The present invention relates to a kind of safe playback methods, comprising: key sequence is generated to be encrypted for frame image sequence, obtains password value sequence；Frame image is reset according to password value；Reset frame image sequence transmission；Whether the image sequence that client validation receives is rearrangement sequence, if it is completes to transmit and play, if being otherwise judged as that video is tampered carry out system early warning.Provide that one kind can speed be fast, keeps coded format completely, does not reduce compression ratio, can meet simultaneously safety, in real time, the safe playback method of transmission process requirement.
Description
Technical field
The present invention relates to media play fields, and in particular to a kind of safe playback method.
Background technique
Recently as the universal of mobile telephone instant communication software, the embedded functional small routine in instant communication software
Gradually attract attention.This kind of small routine can be in the environment of mobile telephone instant communication software, and not needing downloading installation can be used
Application.With the development of this kind of small routine, the function of education and instruction video playing, the convenience used due to it in small routine
Property, gradually by the welcome of user.
Small routine education and instruction video playback capability is using increasingly extensive, but also usable image and video-encryption technology are got over
Come more important.Video ciphertext in video-encryption keeps coded format extremely important.Information format often storage, transmission and
Line plays an important role in playing.Current video-encryption mode is mainly direct pin mode.This method regards video
It is common to flow with the encryption such as block cipher, stream cipher, safety and to realize.But the above method tends not to meet video counts
According to safety, real-time and transmission process demand.
In summary, it is desirable to provide one kind can speed be fast, keeps coded format completely, does not reduce compression ratio, can be simultaneously
Meet safety, the safe playback method that real-time, transmission process requires.
Summary of the invention
The technical problems to be solved by the present invention are: providing, one kind can speed be fast, keeps coded format completely, does not reduce
Compression ratio can meet safety, real-time, transmission process requirement safe playback method simultaneously.
The technical scheme adopted by the invention to solve the technical problem is that:
A kind of safe playback method is encrypted for frame image sequence this method comprises: key sequence is generated, is obtained close
Code value sequence；Frame image is reset according to password value；Reset frame image sequence transmission；The image sequence that client validation receives is
No is rearrangement sequence, if it is completes to transmit and play, if being otherwise judged as that video is tampered carry out system early warning.
Preferably, above-mentioned encryption key sequence constitutes equally distributed space.
Be preferably based on password value numerical value rearrange frame image sequence obtain reset frame image sequence Mi', it is above-mentioned
Being reset according to the numerical value of password value can be for according to password value ascending order or descending arrangement.
Preferably, retracing sequence corresponding relationship is obtained；The arrangement mode transformation of frame image sequence is reset according to corresponding relationship
Return frame image sequence Mi。
Preferably, according to above-mentioned rearrangement image sequence Mi' arrangement mode readjust the sequence of decrypted private key sequence, it is raw
At rearrangement decrypted private key sequence Ri’。
Preferably for the video prestored in server, each frame image of the video is extracted, and according to time shaft
Multiple frame image sequences of above-mentioned video are arranged, frame image sequence M is formedi=(mi(0), mi(1) ..., mi(n)
Preferably, password value can be cryptographic Hash
Preferably, above-mentioned reset according to the numerical value of password value can be for according to password value ascending order or descending arrangement.
Preferably, whether client checks the password value of the rearrangement frame image sequence according to above-mentioned after receiving the video flowing
Ascending or descending order arrangement.
Preferably, according to above-mentioned rearrangement image sequence Mi' arrangement mode readjust the sequence of decrypted private key sequence, it is raw
At rearrangement decrypted private key sequence Ri’。
By the above-mentioned means, providing, one kind can speed be fast, keeps coded format completely, does not reduce compression ratio, can be same
When meet safety, in real time, transmission process require safe playback method.
Detailed description of the invention
Fig. 1 is the work flow diagram of safe playback method provided by the invention.
Specific embodiment
A kind of media of the invention will be quickly described in further detail below.
The present invention is described in more detail below with reference to accompanying drawings, which show the preferred embodiment of the present invention,
It should be understood that those skilled in the art can modify invention described herein and still realize beneficial effects of the present invention.Cause
This, following description should be understood as the widely known of those skilled in the art, and be not intended as limitation of the present invention.
For clarity, not describing whole features of practical embodiments.In the following description, it is not described in detail well known function
And structure, because they can make the present invention chaotic due to unnecessary details.It will be understood that opening in any practical embodiments
In hair, it is necessary to make a large amount of implementation details to realize the specific objective of developer.
To be clearer and more comprehensible the purpose of the present invention, feature, a specific embodiment of the invention is made with reference to the accompanying drawing
Further instruction.It should be noted that attached drawing is all made of very simplified form and using non-accurate ratio, only with one
Purpose that is convenient, clearly aiding in illustrating the embodiment of the present invention.
Fig. 1 is the work flow diagram of the safe playback method provided in the specific embodiment of the invention.Safety as shown in Figure 1
Playback method includes the following steps:
Step 1 extracts the multiple frame images for prestoring video:
For the video prestored in server, each frame image of the video is extracted, and will be above-mentioned according to time shaft
Multiple frame image sequences of video arrange, and form frame image sequence Mi=mi(0), mi(1) ..., mi(n)。
Step 2 generates encryption key and decruption key for each frame image, to form encryption key sequence Ki
With decrypted private key sequence Ri, wherein Ki=ki(0), ki(1) ..., ki(n),Ri=ri(0), ri(1) ..., ri(n) above-mentioned encryption
Key sequence constitutes equally distributed space.
Step 3 carries out encryption for frame image sequence by the generation of above-mentioned key sequence and forms password value sequence Ci=EKi
(Mi), wherein EKiFor coding function, above-mentioned coding function can with for any coding function well known in the art, after coding,
Obtain password value sequence Ci=ci(0), ci(1) ..., ci(n).Preferably, which can be cryptographic Hash.
Wherein, lgKi≤-∑Ci lgCi, to reduce the distance of the solution of key space, guarantee to be lacked in attacker
A possibility that decoding private key is calculated after measuring password value.
Step 4 sequentially forms rearrangement frame image sequence based on password value rearrangement frame image.
The sequence that numerical value based on password value rearranges frame image obtains resetting frame image sequence Mi', it is above-mentioned according to close
The numerical value of code value is reset can be for according to the size of the value of password progress ascending order or descending arrangement.And according to above-mentioned rearrangement figure
As sequence Mi' arrangement mode readjust decrypted private key sequence sequence, generate reset decrypted private key sequence Ri’。
Step 5 resets frame image sequence transmission.And the sequence of checking image sequence whether be according to password value it is big
Small progress ascending order or descending arrangement.
The rearrangement frame image sequence is transmitted to client, client checks the rearrangement frame image after receiving the video flowing
Whether the password value of sequence arranges according to above-mentioned ascending or descending order, then receives above-mentioned text if it is in strict accordance with aforesaid way arrangement
Part, and prepare to play.If it find that the password value of frame sequence is not arranged in strict accordance with ascending or descending order in video flowing, such as occur
The case where becoming larger or become smaller of mutation, then illustrate that above-mentioned video flowing at least partly frame image is tampered, and carry out system prompt.It is logical
The method whether above-mentioned image for checking video is tampered is crossed, complicated verification process is avoided, coded format is being kept, is not dropping
Under conditions of little compressible, in the safety that ensure that data.
Step 6 resets image sequence by resetting decrypted private key decoding；
The video information of encryption is decoded by the decrypted private key of client-side, decoded video information is still pressed
It is arranged according to the mode for resetting image sequence.
Step 7 obtains retracing sequence corresponding relationship f (i)；
Pass through decrypted private key RiWith rearrangement decrypted private key Ri' control, obtain above-mentioned former series arrangement sequence and retracing sequence
Corresponding relationship f (i).
Step 8, according to corresponding relationship f (i), the arrangement mode for resetting frame image sequence switches back to frame image sequence Mi, obtain
After obtaining original image sequence, client carries out video playing.
The present invention provides that one kind can speed be fast, keeps coded format completely, does not reduce compression ratio, can meet peace simultaneously
Entirely, in real time, transmission process require safe playback method.
The basic principles, main features and advantages of the invention have been shown and described above, therefore the foregoing is merely this hairs
Bright embodiment.It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, above-described embodiment and say
It is the principle of the present invention described in bright book, without departing from the spirit and scope of the present invention, the invention also includes each
Kind equivalence changes and improvement, these changes and improvements are fallen in scope of the claimed invention.It is claimed
Range is defined by appending claims and equivalents.
Claims (10)
1. a kind of safe playback method, it is characterised in that: added this method comprises: key sequence is generated for frame image sequence
It is close, obtain password value sequence；Frame image is reset according to password value；Reset frame image sequence transmission；What client validation received
Whether image sequence is rearrangement sequence, if it is completes to transmit and play, is if being otherwise judged as that video is tampered
System early warning.
2. safe playback method according to claim 1, it is characterised in that: above-mentioned encryption key sequence, which is constituted, uniformly divides
The space of cloth.
3. safe playback method according to claim 1, it is characterised in that: the numerical value based on password value rearranges frame
The sequence of image obtains resetting frame image sequence Mi', above-mentioned reset according to the numerical value of password value can be for according to password value ascending order
Or descending arrangement.
4. safe playback method according to claim 1, it is characterised in that: obtain retracing sequence corresponding relationship；According to right
It should be related to that the arrangement mode for resetting frame image sequence switches back to frame image sequence Mi。
5. safe playback method according to claim 1, it is characterised in that: according to above-mentioned rearrangement image sequence Mi' row
Column mode readjusts the sequence of decrypted private key sequence, generates and resets decrypted private key sequence Ri’。
6. safe playback method according to claim 1, it is characterised in that: for the video prestored in server, mention
Each frame image of the video is taken, and is arranged multiple frame image sequences of above-mentioned video according to time shaft, forms frame figure
As sequence Mi=(mi(0), mi(1) ..., mi(n)。
7. safe playback method according to claim 1, it is characterised in that: password value can be cryptographic Hash.
8. safe playback method according to claim 1, it is characterised in that: above-mentioned reset according to the numerical value of password value can
Think according to password value ascending order or descending arrangement.
9. safe playback method according to claim 1, it is characterised in that: client checks after receiving the video flowing
Whether the password value of the rearrangement frame image sequence arranges according to above-mentioned ascending or descending order.
10. safe playback method according to claim 1, it is characterised in that: according to above-mentioned rearrangement image sequence Mi'
Arrangement mode readjusts the sequence of decrypted private key sequence, generates and resets decrypted private key sequence Ri’。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910311916.1A CN110035327B (en) | 2019-04-17 | 2019-04-17 | Safe playing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910311916.1A CN110035327B (en) | 2019-04-17 | 2019-04-17 | Safe playing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110035327A true CN110035327A (en) | 2019-07-19 |
| CN110035327B CN110035327B (en) | 2020-07-17 |
Family
ID=67238939
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910311916.1A Active CN110035327B (en) | 2019-04-17 | 2019-04-17 | Safe playing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110035327B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2586173A (en) * | 2019-08-09 | 2021-02-10 | Univ Guangdong Technology | Video encryption method and apparatus, image capture device and readable storage medium |
| CN113079149A (en) * | 2021-03-25 | 2021-07-06 | 深圳前海茂佳软件科技有限公司 | Stream media data encryption transmission method, decryption method, sending end and receiving end |
| CN116760992A (en) * | 2023-08-23 | 2023-09-15 | 北京中星微人工智能芯片技术有限公司 | Video encoding, authentication, encryption and transmission methods, devices, equipment and media |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN110035327B (en) | 2020-07-17 |
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