CN107547915B - A kind of IPTV video content tamper resistant method - Google Patents
A kind of IPTV video content tamper resistant method Download PDFInfo
- Publication number
- CN107547915B CN107547915B CN201710997096.7A CN201710997096A CN107547915B CN 107547915 B CN107547915 B CN 107547915B CN 201710997096 A CN201710997096 A CN 201710997096A CN 107547915 B CN107547915 B CN 107547915B
- Authority
- CN
- China
- Prior art keywords
- signature
- video segment
- video
- segment file
- iptv
- 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.)
- Active
Links
Landscapes
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
The invention discloses a kind of IPTV video content tamper resistant methods, have increased two signature generation, signature check functional modules newly in original process；The effect of signature generation module is that signature is extracted from video segment file, the effect of signature check module is to carry out signature check to the video file received and decide whether to allow to play according to check results, if video content is illegally distorted, signature check failure does not allow to play the video.Present invention is generally directed to existing IPTV video content tamper resistant methods to be difficult to meet IPTV video content anti-tamper the problem of requiring under the Internet model, it is proposed a kind of new IPTV video content tamper resistant method, it not only increases the anti-tamper safety of IPTV video content, and it realizes simple, it is smaller to the transformation of existing IPTV system, it also improves video and broadcasts speed.
Description
Technical field
The invention belongs to IPTV Web TV technical fields, and in particular to a kind of IPTV video content tamper resistant method.
Background technique
Continuous with the integration of three networks promotes and the continuous speed-raising in broadband, the network mode of IPTV service just from private network to
Internet transformation.Internet is that IPTV service brings content abundant and application, also brings the risk of safe broadcast.
IPTV video content tamper-resistance techniques are the important means taken precautions against IPTV Video security and broadcast risk, traditional IPTV
There are two types of video content tamper resistant methods:
(1) video-encryption.This method realizes that video content is anti-tamper by video-encryption, there is a higher safety, but by
Hardware is all relied in the encryption and decryption of video, flexibility is poor and too big to the transformation of IPTV platform and terminal, it is difficult to meet mutual
IPTV video content tamper-proof requirement under networked mode.
(2) signing messages is inserted into video flowing.This method is extracted video signatures information and is inserted into video flowing, is broadcasting later
End is put to verify video signatures information.Due to not depending on hardware, this method is high compared with video encryption method flexibility, but its school
Video signatures are tested to decapsulate based on video, it is relative complex in realization, and because video and corresponding signing messages download, has verified
It can be played after, cause video to rise and broadcast relatively slowly.
As seen from the above analysis, existing IPTV video content tamper resistant method still has deficiency, it is difficult to meet internet mould
The anti-tamper requirement of IPTV video content under formula.
Summary of the invention
It is anti-tamper to be difficult to meet IPTV video content under the Internet model for existing IPTV video content tamper resistant method
It is required that the problem of, the invention proposes a kind of new IPTV video content tamper resistant methods, not only increase IPTV video content
Anti-tamper safety, and realize simply, it is smaller to the transformation of existing IPTV system, it also improves video and broadcasts speed.
The technical solution adopted by the present invention is that: a kind of IPTV video content tamper resistant method, this method video segment,
CDN distribution, terminal plays link in newly added signature generate, two functional modules of signature check, two of them module it is specific
It is accomplished by
The signature generate the following steps are included:
Step A, signature 1 is generated, 1024 bytes and calculates MD5 signature value before reading video segment file, generates signature 1；
Step B, signature 2 is generated, entire video segment file is read and calculates MD5 signature value, generates signature 2；
Step C, encrypted signature encrypts signature 1 and signature 2 respectively；
Step D, signature saves, and encrypted signature 1 and signature 2 are stored in video segment file name as character string
In；
The signature check the following steps are included:
Step A: video segment file download thread is initiated after requesting and receiving the packet header HTTP that CDN is responded to CDN, is opened
Begin this process；
Step B: receiving the first packet data of video segment file, that is, receives first TCP packet；
Step C: calculating the MD5 value of preceding 1024 byte of video segment file first packet data, and signature verification 1, if verification
Failure, then directly terminate video segment file download process, otherwise enters next link；
Step D: it receives video segment file and plays multicast data and be stored in player buffer area, since buffer data fills
Foot, player have started to broadcast and have exported picture；
Step E: continuing to the remaining data of video segment file, which wouldn't be stored in player buffer；
Step F: calculating the MD5 value of entire video segment file, and signature verification 2, if verification failure, directly terminates to regard
Frequency slice file download process, otherwise enters next link；
Step G: the remaining data of video segment file are stored in player buffer area, player continues to play remaining picture
Face；
Step H: terminate this video segment file download.
Preferably, in the step C that the signature generates, encrypted signature and decryption are carried out using TEA algorithm.
Preferably, in the step D that the signature generates, the format of video segment file name is: key version number _ signature
1 ciphertext _ 2 ciphertexts of signature _ file identification .ts.
Preferably, it in the step D of the signature check, plays multicast data and was estimated by playable 1 second, calculation formula are as follows:
Video segment file size/video segment media duration, wherein video segment file size is obtained from the packet header HTTP, video segment
Media duration is obtained from M3U8 file.
Compared with the prior art, main advantages of the present invention include:
1, a kind of new IPTV video content tamper resistant method is proposed, it is anti-tamper to not only increase IPTV video content
Safety, and realize simply, it is smaller to the transformation of existing IPTV system, it also improves video and broadcasts speed.It, can using the present invention
Effectively meet the anti-tamper requirement of IPTV video content under the Internet model.
2, the method for file signature twice is proposed, has been improved on the basis of the anti-tamper safety of guarantee video content
The speed broadcast.
3, it proposes signing messages being stored in the method in file name, without separately construction signature dissemination system, reduce
The complexity that system is realized, and safeguard protection is carried out to signature using TEA algorithm, it is improved on the basis of signing safety ensureing
The speed of decryption plays signature decryption without influence on user.
Additional aspect and advantage of the invention will be set forth in part in the description, and will partially become from the following description
Obviously, or practice through the invention is recognized.
Detailed description of the invention
Fig. 1 is present system module architectures schematic diagram.
Fig. 2 is present invention signature product process figure.
Fig. 3 is signature check flow chart of the present invention.
Specific embodiment
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.
Under the Internet model, IPTV system generallys use video segment technology and provides Video service.Video is broadcast from being injected into
It puts, it need to be by links such as video segment, CDN distribution, terminal plays.To realize the anti-tamper function of video, the present invention is in original stream
Two signature generation, signature check functional modules (as shown in Figure 1) are increased in journey newly.The effect of signature generation module is from video
It is sliced in file and extracts signature, the effect of signature check module is to carry out signature check to the video file received and according to school
It tests result to decide whether to allow to play, if video content is illegally distorted, signature check failure does not allow to play the video.
Two modules are implemented as follows:
1, signature generates
The present invention realizes that the process of signature systematic function is as shown in Figure 2, comprising the following steps:
Step A, signature 1 is generated.1024 bytes and MD5 signature value is calculated before reading video segment file, generates signature 1.
Step B, signature 2 is generated.It reads entire video segment file and calculates MD5 signature value, generate signature 2.
Step C, encrypted signature.Signature 1 and signature 2 are encrypted respectively, to improve encryption/decryption speed, the present invention is used
TEA algorithm.
Step D, signature saves.Encrypted signature 1 and signature 2 are stored in video segment file name as character string
In, the format of video segment file name is: key version number _ 1 ciphertext of signature _ 2 ciphertexts of signature _ file identification .ts.
2, signature check
The present invention realizes that signature check process is as shown in Figure 3.The following steps are included:
Step A: video segment file download thread is initiated after requesting and receiving the packet header HTTP that CDN is responded to CDN, is opened
Begin this process.
Step B: receiving the first packet data of video segment file, that is, receives first TCP packet.
Step C: the MD5 value of preceding 1024 byte of video segment file first packet data, and signature verification 1 are calculated.If verification
Failure, then directly terminate video segment file download process, otherwise enters next link.
Step D: it receives video segment file and plays multicast data and be stored in player buffer area, since buffer data fills
Foot, player have started to broadcast and have exported picture.
It plays multicast data to be estimated by playable 1 second, calculation formula are as follows: video segment file size/video segment media
Duration.Video segment file size is obtained from the packet header HTTP, and video segment media duration is obtained from M3U8 file.
Step E: continuing to the remaining data of video segment file, which wouldn't be stored in player buffer.
Step F: the MD5 value of entire video segment file, and signature verification 2 are calculated.If verification failure, directly terminates to regard
Frequency slice file download process, otherwise enters next link.
Step G: the remaining data of video segment file are stored in player buffer area.Player continues to play remaining picture
Face.
Step H: terminate this video segment file download.
Module is increased newly by two above, and the present invention realizes the IPTV video contents such as signature generation, signature check and prevents usurping
Change technology.Main innovation point includes:
(1) it uses and signs twice
Signature 2 is the MD5 signature that carries out to complete video slice file, it can be achieved that the anti-tamper of video segment file,
But verifying the signature needs just can be carried out after the completion of entire video segment file download, has reduced and has broadcast speed (player is raising
Rise broadcast speed, generally key frame of video downloading after i.e. display broadcasting pictures, without entire video segment file completely under
It carries).
Speed is broadcast to have improved, the present invention has also been proposed signature 1, i.e., carries out to 1024 bytes before video segment file
MD5 signature.Signature verification 1 can be completed after the completion of the downloading of the first packet of video segment file, improve the speed of signature check.
After the success of video segment file download thread signature verification 1, the multicast data deposit player that rises of video segment file is delayed immediately
Area is rushed, broadcasts speed to have improved.But the remaining data of video segment are not stored in player buffer area immediately, but wait until video
Slice file all complete and be just stored in after being verified successfully by signature 2 by downloading, to improve the anti-tamper safety of video content
Property.
(2) by signing messages encrypting storing in file name
Signing messages is stored in file name, terminal can directly acquire A.L.S. using the distribution capability of CDN network
Breath reduces the complexity of system realization, is conducive to the fast of the anti-tamper function of video without separately building signature dissemination system
Speed is online.
In addition, the present invention carries out safeguard protection to signature using TEA algorithm, improved on the basis of signing safety ensureing
The speed of decryption plays signature decryption without influence on user.
The basic principles, main features and advantages of the invention have been shown and described above.Those skilled in the art
It should be appreciated that the protection scope that the above embodiments do not limit the invention in any form, all to be obtained using modes such as equivalent replacements
The technical solution obtained, falls in protection scope of the present invention.
Part that the present invention does not relate to is the same as those in the prior art or can be realized by using the prior art.
Claims (4)
1. a kind of IPTV video content tamper resistant method, it is characterised in that video segment, CDN distribution, terminal plays link
Two middle newly added signature generation, signature check functional modules, two of them module are implemented as follows:
The signature generate the following steps are included:
Step A: 1024 bytes and calculating MD5 signature value before reading video segment file, generates signature 1；
Step B: reading entire video segment file and calculates MD5 signature value, generates signature 2；
Step C: signature 1 and signature 2 are encrypted respectively；
Step D: encrypted signature 1 and signature 2 are stored in video segment file name as character string；
The signature check the following steps are included:
Step A: video segment file download thread is initiated after requesting and receiving the packet header HTTP that CDN is responded to CDN, starts this
Process；
Step B: receiving the first packet data of video segment file, that is, receives first TCP packet；
Step C: calculating the MD5 value of preceding 1024 byte of video segment file first packet data, and signature verification 1, if verification failure,
Then directly terminate video segment file download process, otherwise enters next link；
Step D: it receives video segment file and plays multicast data and be stored in player buffer area, player has started to broadcast and exported picture
Face；
Step E: continue to receive the remaining data of video segment file, which wouldn't be stored in player buffer area；
Step F: calculating the MD5 value of entire video segment file, and signature verification 2, if verification failure, directly terminates video and cut
Otherwise piece file download process enters next link；
Step G: the remaining data of video segment file are stored in player buffer area, player continues to play remaining picture；
Step H: terminate this video segment file download.
2. a kind of IPTV video content tamper resistant method according to claim 1, it is characterised in that the signature generated
In step C, encrypted signature is carried out using TEA algorithm.
3. a kind of IPTV video content tamper resistant method according to claim 1, it is characterised in that the signature generated
In step D, the format of video segment file name is: key version number _ 1 ciphertext of signature _ 2 ciphertexts of signature _ file identification .ts.
4. a kind of IPTV video content tamper resistant method according to claim 1, it is characterised in that the signature check
In step D, plays multicast data and estimated by playable 1 second, calculation formula are as follows: play multicast data file size=video segment file
Length/video segment media duration, wherein video segment file size from the packet header HTTP obtain, video segment media duration from
It is obtained in M3U8 file.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710997096.7A CN107547915B (en) | 2017-10-23 | 2017-10-23 | A kind of IPTV video content tamper resistant method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710997096.7A CN107547915B (en) | 2017-10-23 | 2017-10-23 | A kind of IPTV video content tamper resistant method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107547915A CN107547915A (en) | 2018-01-05 |
| CN107547915B true CN107547915B (en) | 2019-11-19 |
Family
ID=60968114
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710997096.7A Active CN107547915B (en) | 2017-10-23 | 2017-10-23 | A kind of IPTV video content tamper resistant method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107547915B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108494732B (en) * | 2018-02-09 | 2021-07-06 | 浙江新再灵科技股份有限公司 | Intelligent screen video playing tamper-proof system based on digital fingerprints |
| CN110324682A (en) * | 2019-07-10 | 2019-10-11 | 中国联合网络通信集团有限公司 | VOD method and system based on block chain |
| CN110719499B (en) * | 2019-09-19 | 2022-04-05 | 北京字节跳动网络技术有限公司 | Video downloading method, system, medium and electronic device |
| CN111182336A (en) * | 2019-10-28 | 2020-05-19 | 腾讯科技（深圳）有限公司 | Video data playing processing method and device, server and terminal |
| CN111314742B (en) * | 2020-04-02 | 2023-02-03 | 上海商魁信息科技有限公司 | Video processing method and device and machine-readable storage medium |
| CN111200741B (en) * | 2020-04-02 | 2022-04-15 | 上海商魁信息科技有限公司 | Video processing method and device and machine-readable storage medium |
| CN111866547B (en) * | 2020-07-30 | 2022-07-15 | 北京万协通信息技术有限公司 | Novel video tamper-proofing method |
| CN112040275A (en) * | 2020-07-31 | 2020-12-04 | 上海幻维数码创意科技有限公司 | Video encryption and decryption method |
| CN113840162B (en) * | 2021-09-27 | 2023-07-25 | 中通服创立信息科技有限责任公司 | IPTV video file tamper-proof method |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9210368B2 (en) * | 2004-12-28 | 2015-12-08 | Google Technology Holdings LLC | Digital video recorder for automatically recording an upcoming program that is being advertised |
| CN101431415B (en) * | 2008-12-12 | 2011-12-21 | 天柏宽带网络科技（北京）有限公司 | Bidirectional authentication method |
| CN102075790A (en) * | 2009-11-20 | 2011-05-25 | 上海电机学院 | Method for distributing and encrypting streaming media |
-
2017
- 2017-10-23 CN CN201710997096.7A patent/CN107547915B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN107547915A (en) | 2018-01-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107547915B (en) | A kind of IPTV video content tamper resistant method | |
| US9038147B2 (en) | Progressive download or streaming of digital media securely through a localized container and communication protocol proxy | |
| CN105659240B (en) | It is a kind of for sending and authentication URL is signed to carry out URL certifications in self adaptation stream and the system and method for the content access authorization based on URL | |
| CN100576795C (en) | Public security broadcast control media management and its complete authentication method of not distorted of identification | |
| US8688991B1 (en) | Media player embodiments and secure playlist packaging | |
| CN101051906B (en) | Method for transmitting and receiving stream type media and certifying system for stream type media | |
| CN104506503B (en) | A kind of security certification system based on broadcasting and TV one-way transport network | |
| KR101541911B1 (en) | Apparatus and method for providing security service of User Interface | |
| CN108769742B (en) | IPTV multicast content tamper-proofing method | |
| CN107547918A (en) | The methods, devices and systems that a kind of IPTV channel plays safely | |
| CN102523495A (en) | IPTV system and method for realizing playing hotlinking prevention | |
| CN108989886A (en) | A kind of method and system playing encrypted video | |
| KR20100000299A (en) | Apparatus and method for transmitting a plurality of key data | |
| CN110381334A (en) | Anti-stealing link method, apparatus and system | |
| CN110868641B (en) | Method and system for detecting validity of live broadcast source | |
| KR20180048618A (en) | Receiving device, transmitting device, and data processing method | |
| CN106572052B (en) | Verification method, set top box and system for Internet television playing content | |
| CN106604023A (en) | Video stream authenticity verification method and video stream authenticity verification system | |
| CN110012260A (en) | A kind of video conference content guard method, device, equipment and system | |
| CN110324682A (en) | VOD method and system based on block chain | |
| CN107465938A (en) | The method, apparatus and media server system of a kind of media preview | |
| CN115550328A (en) | Digital copyright protection method based on auxiliary enhancement information of H.264 video code stream | |
| KR101098828B1 (en) | Method for providing contents management in bidirectional digital broadcasting system | |
| CN105635850B (en) | A kind of method that IP terminal obtains DVB standard digital television on-demand resource from gateway | |
| US9609279B2 (en) | Method and system for providing secure CODECS |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20190321 Address after: 210006 Tongyu Building, 501 Zhongshan South Road, Nanjing City, Jiangsu Province Applicant after: Tianyi Smart Family Technology Co.,Ltd. Address before: 210037 No. 260 Central Road, Xuanwu District, Nanjing City, Jiangsu Province 1901 Applicant before: JIANGSU PROVINCE PUBLIC INFORMATION CO.,LTD. |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: 201702 3rd floor, 158 Shuanglian Road, Qingpu District, Shanghai Patentee after: Tianyi Smart Family Technology Co.,Ltd. Address before: 210006 Tongyu Building, 501 Zhongshan South Road, Nanjing City, Jiangsu Province Patentee before: Tianyi Smart Family Technology Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220224 Address after: Room 1423, No. 1256 and 1258, Wanrong Road, Jing'an District, Shanghai 200072 Patentee after: Tianyi Digital Life Technology Co.,Ltd. Address before: 201702 3rd floor, 158 Shuanglian Road, Qingpu District, Shanghai Patentee before: Tianyi Smart Family Technology Co.,Ltd. |