CN102970580A - Video file encryption and decryption method and system - Google Patents
Video file encryption and decryption method and system Download PDFInfo
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- CN102970580A CN102970580A CN2012104683624A CN201210468362A CN102970580A CN 102970580 A CN102970580 A CN 102970580A CN 2012104683624 A CN2012104683624 A CN 2012104683624A CN 201210468362 A CN201210468362 A CN 201210468362A CN 102970580 A CN102970580 A CN 102970580A
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Abstract
The invention relates to a video file encryption and decryption method and a system. The video file encryption and decryption method comprises the steps that step one, a client side logs in a server according to a user number and submits a video file downloading request; step two, a server side receives the video file downloading request submitted by the client side; step three, the server side reads a byte mapping table; step four, the server side reads an encryption section of a video file, and the encryption section of the data of each byte is encrypted according to the byte mapping table; step five, the server side sends the video file to the client side; and step six, a video player of the client side carries out inverse-mapping decryption on the encryption section of the video file by utilizing the byte mapping table, and then plays the video file. According to the method and the device, the video file can be encrypted and decrypted, so that the video file can be prevented from being pirated.
Description
Technical field
The present invention relates to a kind of encryption method, particularly a kind of video file encipher-decipher method and system.
Background technology
In education sector, it is very general to record education video, and these education video are the very important assets of educational institution; When authorizing the student to download on the own computer, this education video also just can at will be copied pirate.
Summary of the invention
Technical problem to be solved by this invention provides a kind of video that prevents by the video file encipher-decipher method of piracy.
The technical scheme that the present invention solves the problems of the technologies described above is as follows: a kind of video file encipher-decipher method, and it may further comprise the steps:
Step 1: client is according to the Customs Assigned Number logon server and submit the downloading video files request to;
Step 2: server end receives the downloading video files request that client is submitted to;
Step 3: server end reads the byte value mapping table;
Step 4: server end reads the encrypted section of video file, and the data of each byte are encrypted encrypted section according to the byte value mapping table;
Step 5: server end sends video file to client;
Step 6: the video player of client utilizes first the byte value mapping table that the encrypted section of video file is reflected the close rear playing video file of radiolysis.
The invention has the beneficial effects as follows: at server end video file is encrypted, penetrate in client utilization reflection video file is decrypted, when the player that utilizes non-client is play, can't be decrypted video file, reach the purpose that prevents that video file is anti-piracy.
On the basis of technique scheme, the present invention can also do following improvement.
Further, when obtaining described encrypted section, the 1st byte that originates in described video file of described encrypted section ends at any byte in 1k byte to the 1M bytes range.
The beneficial effect that adopts above-mentioned further scheme is value in video file, can contrast to prevent so stolen version after deciphering with the value of video file relevant position.
Further, described byte value mapping table is with 0 to 255 the source data corresponding target data at random that is created in 0 to 255 scope respectively.
The beneficial effect that adopts above-mentioned further scheme is to produce at random target data, can produce different encrypted video file according to different user, has strengthened the deciphering difficulty.
A kind of video file encrypting and deciphering system comprises client modules and server end module;
Described client modules is used for according to Customs Assigned Number logon server end module and submits the downloading video files request to; Utilize the byte value mapping table that the encrypted section of video file is reflected that radiolysis is close; Playing video file;
Described server end module is used for receiving the downloading video files request that the client modules user numbers submission; Read the byte value mapping table; Read the encrypted section of video file; The data of each byte are encrypted encrypted section according to the byte value mapping table; Send video file to client modules.
The beneficial effect that adopts above-mentioned further scheme is at server end video file to be encrypted, penetrate in client utilization reflection video file is decrypted, when the player that utilizes non-client is play, can't be decrypted video file, reach the purpose that prevents that video file is anti-piracy.
Further, the span of the encrypted section size in the described server end module is front 1k to the 1M byte of video file.
The beneficial effect that adopts above-mentioned further scheme is value in video file, can contrast to prevent so stolen version after deciphering with the value of video file relevant position.
Further, the byte value mapping table in the described server end module is with 0 to 255 the source data corresponding target data at random that is created in 0 to 255 scope respectively.
The beneficial effect that adopts above-mentioned further scheme is to produce at random target data, can produce different encrypted video file according to different user, has strengthened the deciphering difficulty.
Description of drawings
Fig. 1 is the inventive method flow chart;
Fig. 2 is system configuration schematic diagram of the present invention.
In the accompanying drawing, the list of parts of each label representative is as follows:
1, client modules, 2, the server end module.
Embodiment
Below in conjunction with accompanying drawing principle of the present invention and feature are described, institute gives an actual example and only is used for explaining the present invention, is not be used to limiting scope of the present invention.
As shown in Figure 1, be the inventive method flow chart; Fig. 2 is system configuration schematic diagram of the present invention.
Embodiment 1
A kind of video file encipher-decipher method is characterized in that it may further comprise the steps:
Step 1: client is according to the Customs Assigned Number logon server and initiate namely to submit to the downloading video files request;
Step 2: server end receives the downloading video files request that client is submitted to;
Step 3: server end reads this user's byte value mapping table according to Customs Assigned Number;
Step 4: server end reads the encrypted section of video file, and the data of each byte are encrypted encrypted section according to the byte value mapping table;
Step 5: server end sends video file to client;
Step 6: the video player of client utilizes first the own byte value mapping table of client that the encrypted section of video file is reflected the close rear playing video file of radiolysis.
When obtaining described encrypted section, the 1st byte that originates in described video file of described encrypted section ends at the 2k byte of video file.Read front 2048 bytes of video file, each byte value these 2048 bytes is mapped to new value according to the byte value mapping table, then the value of 2048 bytes of this new generation is kept at front 2048 bytes of video file.
Described byte value mapping table is with 0 to 255 the source data corresponding target data at random that is created in 0 to 255 scope respectively.The byte value mapping table: the source data to 0 to 255 forms the mapping dictionary table of target data at random, and is as follows:
0—168
1—240 ......
254—180
255—23
A kind of video file encrypting and deciphering system comprises client modules 1 and server end module 2;
Described client modules 1 is used for namely submitting the downloading video files request to according to Customs Assigned Number logon server end module 2 and initiation; Utilize the byte value mapping table that the encrypted section of video file is reflected that radiolysis is close; Playing video file;
Described server end module 2 is used for receiving the downloading video files request that client modules 1 user numbers submission; Read the byte value mapping table; Read the encrypted section of video file; The data of each byte are encrypted encrypted section according to the byte value mapping table; Send video file to client modules 1.
The scope of the encrypted section in the described server end module 2 is front 1k to the 1M byte of video file.
Byte value mapping table in the described server end module 2 is with 0 to 255 the source data corresponding target data at random that is created in 0 to 255 scope respectively.
The above only is preferred embodiment of the present invention, and is in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1. a video file encipher-decipher method is characterized in that, may further comprise the steps:
Step 1: client is according to the Customs Assigned Number logon server and submit the downloading video files request to;
Step 2: server end receives the downloading video files request that client is submitted to;
Step 3: server end reads the byte value mapping table;
Step 4: server end reads the encrypted section of video file, and the data of each byte are encrypted encrypted section according to the byte value mapping table;
Step 5: server end sends video file to client;
Step 6: client utilizes first the byte value mapping table that the encrypted section of video file is reflected that radiolysis is close, rear playing video file.
2. video file encipher-decipher method according to claim 1, it is characterized in that: when obtaining described encrypted section, the 1st byte that originates in described video file of described encrypted section ends at any byte in 1k byte to the 1M bytes range.
3. video file encipher-decipher method according to claim 1 is characterized in that: described byte value mapping table is with 0 to 255 the source data corresponding target data at random that is created in 0 to 255 scope respectively.
4. a video file encrypting and deciphering system is characterized in that: comprise client modules (1) and server end module (2);
Described client modules (1) is used for according to Customs Assigned Number logon server end module (2) and submits the downloading video files request to; Utilize the byte value mapping table that the encrypted section of video file is reflected that radiolysis is close; Playing video file;
Described server end module (2) is used for receiving the downloading video files request that client modules (1) user numbers submission; Read the byte value mapping table; Read the encrypted section of video file; The data of each byte are encrypted encrypted section according to the byte value mapping table; Send video file to client modules (1).
5. video file encrypting and deciphering system according to claim 4, it is characterized in that: the scope of the encrypted section in the described server end module (2) is front 1k to the 1M byte of video file.
6. video file encrypting and deciphering system according to claim 4 is characterized in that: the byte value mapping table in the described server end module (2) is with 0 to 255 the source data corresponding target data that is created at random in 0 to 255 scope respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201210468362.4A CN102970580B (en) | 2012-11-19 | 2012-11-19 | A kind of video file encipher-decipher method and system |
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| CN201210468362.4A CN102970580B (en) | 2012-11-19 | 2012-11-19 | A kind of video file encipher-decipher method and system |
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| CN102970580A true CN102970580A (en) | 2013-03-13 |
| CN102970580B CN102970580B (en) | 2016-03-16 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103491384A (en) * | 2013-09-09 | 2014-01-01 | 天脉聚源(北京)传媒科技有限公司 | Encrypting method and device of video and decrypting method and device of video |
| CN103888475A (en) * | 2014-04-11 | 2014-06-25 | 北京鸿达以太文化发展有限公司 | Method and device for protecting multimedia data |
| CN107395620A (en) * | 2017-08-17 | 2017-11-24 | 无锡清华信息科学与技术国家实验室物联网技术中心 | A kind of network transmission encrypting and decrypting method based on random bytes mapping |
| CN108959907A (en) * | 2018-07-25 | 2018-12-07 | 武汉恩智电子科技有限公司 | A kind of video record secrecy system based on video monitoring |
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| CN101378490A (en) * | 2007-08-30 | 2009-03-04 | 腾讯科技（深圳）有限公司 | Logging-in frontend, device, client terminal and method for implementing stream medium video order programme |
| CN202159435U (en) * | 2011-03-24 | 2012-03-07 | 北京中微航讯科技有限公司 | Study machine for dispensing mobile education resources |
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2012
- 2012-11-19 CN CN201210468362.4A patent/CN102970580B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101378490A (en) * | 2007-08-30 | 2009-03-04 | 腾讯科技（深圳）有限公司 | Logging-in frontend, device, client terminal and method for implementing stream medium video order programme |
| CN202159435U (en) * | 2011-03-24 | 2012-03-07 | 北京中微航讯科技有限公司 | Study machine for dispensing mobile education resources |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103491384A (en) * | 2013-09-09 | 2014-01-01 | 天脉聚源(北京)传媒科技有限公司 | Encrypting method and device of video and decrypting method and device of video |
| CN103491384B (en) * | 2013-09-09 | 2017-01-18 | 天脉聚源(北京)传媒科技有限公司 | Encrypting method and device of video and decrypting method and device of video |
| CN103888475A (en) * | 2014-04-11 | 2014-06-25 | 北京鸿达以太文化发展有限公司 | Method and device for protecting multimedia data |
| CN107395620A (en) * | 2017-08-17 | 2017-11-24 | 无锡清华信息科学与技术国家实验室物联网技术中心 | A kind of network transmission encrypting and decrypting method based on random bytes mapping |
| CN108959907A (en) * | 2018-07-25 | 2018-12-07 | 武汉恩智电子科技有限公司 | A kind of video record secrecy system based on video monitoring |
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| CN102970580B (en) | 2016-03-16 |
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