CN107172433A - A kind of video encryption method - Google Patents
A kind of video encryption method Download PDFInfo
- Publication number
- CN107172433A CN107172433A CN201710295188.0A CN201710295188A CN107172433A CN 107172433 A CN107172433 A CN 107172433A CN 201710295188 A CN201710295188 A CN 201710295188A CN 107172433 A CN107172433 A CN 107172433A
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- China
- Prior art keywords
- video
- encrypted
- encryption
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- 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.)
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/46—Embedding additional information in the video signal during the compression process
-
- 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
Abstract
The present invention relates to a kind of video encryption method, comprise the following steps：Whether for the video file for needing to encrypt, it is source code flow video to judge it；When video file is source code flow video, video is encrypted using the header AES of Key Frame Extraction algorithm and video, the video file of encryption is formed；When video is compressed bit stream video, is first decoded, be reduced into source code flow video, video is encrypted using the header AES of Key Frame Extraction algorithm and video, form the video file of encryption；H.264, video file after encryption is encoded and preserved, compression encrypted video file is formed.The present invention is encrypted by the I frames in the IPB frames to video, and the header of video is encrypted, realize the synchronism from the real-time encrypted processing in storage device top foradownloaded video side, so as to improve the efficiency of video-encryption and copy, simultaneously compared to for single AES, cipher round results are good, with good security.
Description
Technical field
The present invention relates to technical fields such as video-encryption, coding and decoding videos, a kind of video encryption method is in particular related to.
Background technology
Currently, as computer network is popularized and the fast lifting of network performance, in safe city, smart city, intelligence
In terms of traffic, video monitoring just with its good technology and cost advantage, achieves fast development, disparate networks video monitoring
Construction is also carried out throughout the country.
A large amount of digital high-definition IPC High Speed Construction, has driven video storage technology fast-developing.It is based especially on IP network
The memory technology of framework is maked rapid progress, and the storage product of a large amount of forms, such as NVR/ have been emerged around Video Surveillance Industry application
CVR storages, network storage server, storage all-in-one, cloud storage etc..The modern times such as safe city, intelligent prison, wisdom post
The scale of the video monitoring system of change is increasing, therewith, and the video interactive of management and control also more and more frequently, causes video to be shared
(safety) and circulation monitoring (tracing to the source) etc. have very big hidden danger.
Removing needs outside the service video information that opens towards the public, all monitoring systems no matter be used for where or what
Plant purpose to have to video information uniqueness and private demand for security, at present, the industry that encrypted video is primarily applied should
It is that risk is higher with the higher important department of safe class.It can be passed further, since encrypted video is exclusive in public internet safe
Defeated characteristic, also makes it have obvious advantage and the imagination empty in long-distance education, tele-medicine, remote production and job management
Between.
Relatively simple to the AES of video at present, security is difficult to ensure that；And encrypt offline commonplace, it is impossible to reach
To the real-time encrypted of video, encryption efficiency is than relatively low.
The content of the invention
According to problems of the prior art, the invention provides a kind of video encryption method, the present invention realize from
The synchronism of the real-time encrypted processing in storage device top foradownloaded video side, improves video-encryption and copy efficiency, compares simultaneously
For single AES, cipher round results are good, with good security.
For achieving the above object, the invention provides a kind of video encryption method, comprise the following steps：
S1, whether for the video file for needing to encrypt, it is source code flow video to judge it；
S2, when video file is source code flow video, using Key Frame Extraction algorithm and the header AES of video
Video is encrypted, the video file of encryption is formed；When video is compressed bit stream video, is first decoded, be reduced into original
Streaming video, then video is encrypted using the header AES of Key Frame Extraction algorithm and video again, is formed and added
Close video file；
H.264, S3, is encoded and is preserved to the video file after encryption, forms compression encrypted video file.
It is preferred that, the Key Frame Extraction algorithm refers to the IPB frame structures by video, I frames is extracted from video flowing, only
I frames are encrypted.
It is preferred that, the video header encryption refers to the header information data of video is encrypted, and the head of video is believed
Breath data become random sequence.
It is preferred that, the decoding includes standard decoding, that is, uses H.264 to decode and coded format is entered for code stream H.264
Row decoding.
The beneficial effects of the present invention are：
1) present invention reduces encryption number of frames by the way that only the I frames in the IPB frames of video are encrypted, and improves and adds
Close speed, realizes the synchronism from the real-time encrypted processing in storage device top foradownloaded video side, so as to improve video-encryption
With copy efficiency, the requirement of the real-time encrypted transmission of video data and access is met.
2) while the present invention is encrypted by the I frames in the IPB frames to video, the header of video is encrypted, i.e.,
The header information data of video is become into random sequence, after header information data encryption, has broken original corresponding relation, has served and add
Close effect；For single AES, two kinds of encryption methods combine that cipher round results are good, with good safety
Property.
Brief description of the drawings
Fig. 1 is the overview flow chart of video encryption method of the present invention.
Fig. 2 is the workflow diagram of video encryption method of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
As depicted in figs. 1 and 2, a kind of video encryption method, the described method comprises the following steps：
S1, whether for the video file for needing to encrypt, it is source code flow video to judge it；
Specifically, the video file encrypted the need for being provided for video storaging equipments such as DVR/NVR, judgement is source code
Stream video or compressed bit stream video.
S2, when video file is source code flow video, using Key Frame Extraction algorithm and the header AES of video
Video is encrypted, the video file of encryption is formed；When video is compressed bit stream video, is first decoded, be reduced into original
Streaming video, video is encrypted using the header AES of Key Frame Extraction algorithm and video, forms regarding for encryption
Frequency file；
Specifically, the Key Frame Extraction algorithm refers to the IPB frame structures by video, I frames are extracted from video flowing, only
I frames are encrypted, the number of frames for needing to encrypt is reduced, improves enciphering rate, the number of frames for needing to encrypt is reduced, carries
High enciphering rate, realizes the synchronism from the real-time encrypted processing in storage device top foradownloaded video side, is regarded so as to improve
Frequency is encrypted and copy efficiency, meets the requirement of the real-time encrypted transmission of video data and access.
Meanwhile, the encryption of video header is that the header information data of video is encrypted, and the header information data of video is become
Into random sequence, after header information data encryption, original corresponding relation is broken, has served the effect of encryption, made recipient difficult
With specification configuration information data (video information such as position, size, time of frame) and video information data (video frame information), more
It is difficult to know the particular content of data structure and data, it is difficult to the Video coding number received is decoded by former data structure
According to, it is impossible to original image is obtained, the purpose of encryption is reached.
The decoding includes standard and decoded, that is, uses H.264 to decode coded format is decoded for code stream H.264.
H.264 it is the technology encoded based on frame, using DPCM plus the hybrid coding pattern of transition coding.But it, which is used, " returns
Return basic " compact design, without numerous options, many compression performances better than H.263++ can be obtained；Strengthen to various
The adaptability of channel, using the structure and grammer of " network friendliness ", is conducive to the processing to error code and packet loss；It is based on system
Open, application target wider range H.264, to meet different rates, different resolutions and the different need for transmitting occasion
Ask.
H.264, S3, is encoded and is preserved to the video file after encryption, forms compression encrypted video file.
In summary, the invention provides a kind of video encryption method, by first being carried out to the I frames in the IPB frames of video
Encryption, due to only the I frames of frame of video being encrypted, reduces the number of frames for needing to encrypt, improves enciphering rate, realize
From the synchronism of the real-time encrypted processing in storage device top foradownloaded video side, so that video-encryption and copy efficiency are improved, it is full
The real-time encrypted transmission of foot video data and the requirement of access；Then the header encryption of video is carried out again, and the head of video is believed
Breath data become random sequence, after header information data encryption, have broken original corresponding relation, recipient is not being known key
In the case of be difficult to differentiate between structural information data and video information data, it is more difficult to know data structure and data it is specific in
Hold, it is difficult to the video data encoder received is decoded by former data structure, it is impossible to obtain original image, reach the mesh of encryption
, for single AES, two kinds of encryption methods combine that cipher round results are good, with good security.
Claims (4)
1. a kind of video encryption method, it is characterised in that comprise the following steps：
S1, whether for the video file for needing to encrypt, it is source code flow video to judge it；
S2, when video file be source code flow video, using Key Frame Extraction algorithm and video header AES to regarding
Frequency is encrypted, and forms the video file of encryption；When video is compressed bit stream video, is first decoded, be reduced into source code flow
Video, then video is encrypted using the header AES of Key Frame Extraction algorithm and video again, forms encryption
Video file；
H.264, S3, is encoded and is preserved to the video file after encryption, forms compression encrypted video file.
2. a kind of video encryption method according to claim 1, it is characterised in that：The Key Frame Extraction algorithm refers to lead to
The IPB frame structures of video are crossed, I frames are extracted from video flowing, only I frames are encrypted.
3. a kind of video encryption method according to claim 2, it is characterised in that：Video header encryption refers to pair
The header information data of video is encrypted, and the header information data of video is become into random sequence.
4. a kind of video encryption method according to claim 1, it is characterised in that：The decoding includes standard decoding, i.e.,
Use H.264 to decode and coded format is decoded for code stream H.264.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710295188.0A CN107172433A (en) | 2017-04-28 | 2017-04-28 | A kind of video encryption method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710295188.0A CN107172433A (en) | 2017-04-28 | 2017-04-28 | A kind of video encryption method |
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| CN107172433A true CN107172433A (en) | 2017-09-15 |
Family
ID=59813550
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| CN201710295188.0A Pending CN107172433A (en) | 2017-04-28 | 2017-04-28 | A kind of video encryption method |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108322778A (en) * | 2018-02-09 | 2018-07-24 | 珠海迈科智能科技股份有限公司 | A kind of method and device promoting DVB data sts-stream scrambling sts speed |
| CN109327711A (en) * | 2018-10-22 | 2019-02-12 | 高斯贝尔数码科技股份有限公司 | Content format layered structure, encryption method, decryption method and the terminal of audio-video |
| CN109561323A (en) * | 2019-01-02 | 2019-04-02 | 武汉珈铭汉象教育科技有限公司 | MP4 file encryption, decryption method and device |
| CN110611830A (en) * | 2019-09-29 | 2019-12-24 | 腾讯科技（深圳）有限公司 | Video processing method, device, equipment and medium |
| CN111698534A (en) * | 2020-06-10 | 2020-09-22 | 北京奇艺世纪科技有限公司 | Video processing method and device, electronic equipment and storage medium |
| CN112291063A (en) * | 2020-11-03 | 2021-01-29 | 西安万像电子科技有限公司 | Image data transmission method and device and image data receiving method and device |
| CN114640855A (en) * | 2019-04-09 | 2022-06-17 | 西安万像电子科技有限公司 | Data processing method and system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108322778A (en) * | 2018-02-09 | 2018-07-24 | 珠海迈科智能科技股份有限公司 | A kind of method and device promoting DVB data sts-stream scrambling sts speed |
| CN109327711A (en) * | 2018-10-22 | 2019-02-12 | 高斯贝尔数码科技股份有限公司 | Content format layered structure, encryption method, decryption method and the terminal of audio-video |
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| CN114640855A (en) * | 2019-04-09 | 2022-06-17 | 西安万像电子科技有限公司 | Data processing method and system |
| CN110611830A (en) * | 2019-09-29 | 2019-12-24 | 腾讯科技（深圳）有限公司 | Video processing method, device, equipment and medium |
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| CN112291063A (en) * | 2020-11-03 | 2021-01-29 | 西安万像电子科技有限公司 | Image data transmission method and device and image data receiving method and device |
| CN112291063B (en) * | 2020-11-03 | 2023-12-19 | 西安万像电子科技有限公司 | Image data transmission method and device, and image data receiving method and device |
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Application publication date: 20170915 |