CN108401161B - Processing method for assisting film to perform network release projection - Google Patents
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- 238000005336 cracking Methods 0.000 claims description 20
- 230000000739 chaotic effect Effects 0.000 claims description 19
- 238000000034 method Methods 0.000 claims description 16
- 230000008569 process Effects 0.000 claims description 8
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- 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
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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
- H04L9/001—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols using chaotic signals
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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
- H04L9/06—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols the encryption apparatus using shift registers or memories for block-wise or stream coding, e.g. DES systems or RC4; Hash functions; Pseudorandom sequence generators
- H04L9/0618—Block ciphers, i.e. encrypting groups of characters of a plain text message using fixed encryption transformation
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- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/14—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols using a plurality of keys or algorithms
- H04L9/16—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols using a plurality of keys or algorithms the keys or algorithms being changed during operation
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- 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
- H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
- H04N21/266—Channel or content management, e.g. generation and management of keys and entitlement messages in a conditional access system, merging a VOD unicast channel into a multicast channel
- H04N21/26613—Channel or content management, e.g. generation and management of keys and entitlement messages in a conditional access system, merging a VOD unicast channel into a multicast channel for generating or managing keys in general
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L2209/00—Additional information or applications relating to cryptographic mechanisms or cryptographic arrangements for secret or secure communication H04L9/00
- H04L2209/60—Digital content management, e.g. content distribution
- H04L2209/603—Digital right managament [DRM]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L2463/00—Additional details relating to network architectures or network communication protocols for network security covered by H04L63/00
- H04L2463/101—Additional details relating to network architectures or network communication protocols for network security covered by H04L63/00 applying security measures for digital rights management
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Abstract
The invention relates to a processing method for assisting a film to perform network release and projection, which comprises the following steps: verifying copyright certification of a film producer; establishing a film transaction network platform and accessing cinema equipment; automatically converting and encrypting the film; automatically sending the film and the key to a projection device of the cinema through a film transaction network platform; and (5) clearing the movie transaction. The processing method for assisting the film to carry out network release and projection, provided by the invention, takes copyright protection as a core, strictly checks the copyright from the film source, protects the copyright after transaction by encrypting the film, simultaneously realizes automatic transfer encryption of the film and transmits the encrypted film to cinema equipment accessed to a film transaction network platform, and greatly improves the efficiency. In addition, various and flexible transaction modes are provided, the requirements of different users are met, and the sales of the film side are effectively expanded. Through the film network transaction platform, the film resources can be fully utilized, the resource waste is avoided, and the requirements of practical application can be well met.
Description
Technical Field
The invention belongs to the technical field of movies, and particularly relates to a processing method for assisting a movie in playing a network release.
Background
Movies are an indispensable entertainment mode for people's life in modern society. With the improvement of the living standard of people's material culture and the rapid development of entertainment industry, more and more people go to the cinema. Digital movies are also increasing, and people like to watch digital movies on a network on a computer. The advantages of digital movies mainly include saving movie production cost, renovating production mode and improving production level. By means of the high-definition camera shooting technology, rail connection with a high-definition era is achieved, digital media are stored, the quality is kept stable forever, any phenomena of abrasion, aging and the like cannot occur, shaking and flickering cannot occur, film washing is not needed in transmission and issue, the issue cost is greatly reduced, and quality loss cannot occur in the transmission process.
Nearly thousands of films are shot in China, more than 70% of the films cannot be disclosed, namely, only about three films are shot in China each year, the films can meet the audience, more films which are shot by hundreds of thousands of times are consumed, and finally the films are directly locked into a warehouse, so that huge resource waste is caused. Mainly because the investment is limited, no money is paid to publicize and issue after the money is spent; some money even after post-production cannot be found, investors cannot earn money when seeing the sample wafer, and the 'meat cutting' is broken without continuing to throw money, and only the dead abdomen can be achieved. In addition, the film showing in China is scheduled, and the film is shown on time after the film really has the file, but the film is limited by the film arrangement of the cinema, if the cinema does not arrange the film, the audience wants to see the film and cannot see the film in the cinema again after the film is put in the file.
The above two methods have the disadvantages that: 1. most movies are dead in fetus due to high publicity distribution costs. 2. Even the most explosive movies are out of date and cannot be viewed by the audience from the theatre. 3. The film video piracy phenomenon is serious, and the film copyright can not be protected. This certainly causes a great waste of resources. It is now necessary to develop a processing method for assisting a movie to perform a network release and projection so as to fully utilize movie resources and avoid resource waste.
Disclosure of Invention
In view of the above-mentioned problems in the prior art, it is an object of the present invention to provide a processing method for assisting a movie to be released and shown on a network, which can avoid the above-mentioned technical drawbacks.
In order to achieve the above object, the present invention provides the following technical solutions:
a processing method for assisting a movie to perform network release and projection comprises the following steps:
the method comprises the following steps: verifying copyright certification of a film producer;
step two: establishing a film transaction network platform and accessing cinema equipment;
step three: automatically converting and encrypting the film; according to the property of the film projection equipment, the film projected on the professional projection equipment is converted and encrypted according to the national standard strictly; for a movie shown on a general projection device, encryption is performed by a dedicated algorithm;
step four: automatically sending the film and the key to a projection device of the cinema through a film transaction network platform;
step five: and (5) clearing the movie transaction.
Further, in step three, the algorithm for encrypting the movie shown on the general projection device comprises the following steps:
step 1) generating a key;
generating an x, y, z chaotic sequence by adopting a Lorentz equation which is as follows:
dx/dt ═ σ (y-x), dy/dt ═ rx-y-xz, dz/dt ═ xy-bz, where σ, r, b are positive parameters;
after iterating the Lorentz equation for one thousand times, intercepting the chaotic sequence of M x N groups { x, y, z }; m N is the size of the film frame;
optimizing each generated x, y, z chaotic sequence,
optimizing the chaotic sequences of the M x N groups of { x, y, z } to obtain M x N groups of chaotic sequences { x ', y', z '}, taking the 3 rd, 5 th and 7 th digits of each value in the sequences to form a three-digit decimal number, and then carrying out the operation of taking the remainder of the three-digit decimal number and 256 to obtain an 8-digit key stream, thus obtaining M N groups of final key sequences { x', y ', z' }k″,yk″,zk", where k is [1, M N ]]；
Step 2) encrypting one frame of image of the movie;
displaying the frame which executes the encryption operation;
and 3) repeating the step 2), and completing the encryption of all the frames of the movie.
Further, the formula for optimizing each generated x, y, z chaotic sequence set is as follows:
x ' ═ x | -M (| x |), y ' ═ y | -M (| y |), z ' ═ z | -M (| z |), wherein M (| x |) represents the largest integer less than or equal to | x |; m (| y |) represents the largest integer less than or equal to | y |; m (| z |) represents the largest integer less than or equal to | z |.
Further, σ is 10, b is 8/3, and r is 28.
Further, the step of encrypting one frame of image of the movie in the step 2) is:
encrypting each pixel point in the frame one by one according to the following formula to finish the encryption of the whole frame image;
in the formula, Rk、GkAnd BkThree component values, x, respectively representing the current pixel point to be encryptedk″,yk″,zk"respectively represent key sequence values, R 'corresponding to the current pixel point component to be encrypted'k-1、G’k-1And B'k-1Respectively is the component value, R ', of the pixel point of which the encryption operation has been completed'k、G’kAnd B'kRespectively obtaining three component values after the current pixel point is subjected to encryption operation; when the first pixel point in each frame image is encrypted, R'k-1、G’k-1And B'k-1The values of (a) are R, G and B of the last pixel in the frame image.
Further, the corresponding decryption operation comprises the steps of:
reading a frame of image in the encrypted movie, and inputting values of decryption keys x, y and z;
step (2) step 1) of the process of encrypting the movie is executed, and M x N sets of final key sequences { x }are obtainedk″,yk″,zk", where k is [1, M N ]]；
Sequentially carrying out cracking operation on the second pixel to the last pixel in the encrypted frame to obtain the original value of the last pixel after the cracking operation on the last pixel is completed, and then carrying out cracking operation on the 1 st pixel in the encrypted frame image to complete the cracking of the whole frame image;
and (4) performing the cracking operation of the step (3) on all the encrypted frame images of the movie until the decryption of the movie is completed.
Further, the cracking formula for sequentially performing cracking operations on the second pixel to the last pixel in the encrypted frame in the step (3) is as follows:
further, in step four, the process of automatically sending the movie and the key to the projection device of the theater via the movie transaction network platform comprises the steps of: 1) accessing projection equipment of a user to a film network transaction platform; 2) when a user purchases a movie, selecting equipment for receiving the movie from projection equipment of the access platform; 3) the platform acquires equipment certificates required by movie key production according to equipment selected by a user, automatically completes a movie encryption process and generates a movie key; 4) the movie purchased by the user, and the generated movie key, are transmitted to the projection device of the access platform over a private network.
The processing method for assisting the film to carry out network release and projection, provided by the invention, takes copyright protection as a core, strictly checks the copyright from the film source, protects the copyright after transaction by encrypting the film, simultaneously realizes automatic transfer encryption of the film and transmits the encrypted film to cinema equipment accessed to a film transaction network platform, and greatly improves the efficiency. In addition, various and flexible transaction modes are provided, the requirements of different users are met, and the sales of the film side are effectively expanded. Through the film network transaction platform, the film resources can be fully utilized, the resource waste is avoided, and the requirements of practical application can be well met.
Drawings
FIG. 1 is a flow chart of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, a processing method for assisting a movie to perform a network release presentation includes:
the method comprises the following steps: strictly checking the copyright certification of a film producer to ensure the legality of a film source;
step two: establishing a film transaction network platform, accessing more cinemas, connecting the film transaction network platform with projection equipment of the cinemas, and propagating and popularizing the film on the film transaction network platform;
step three: automatically converting and encrypting the film; according to the property of the film projection equipment, the film projected on the professional projection equipment is converted and encrypted according to the national standard strictly; the film shown on the common projection equipment is encrypted through a special algorithm, so that the copyright protection in the film transaction process is ensured;
step four: the film is automatically sent to the projection equipment through the film transaction network platform, and the key generated by the automatic film transfer encryption is directly sent to the projection equipment, so that the turnover link is reduced;
step five: the film transaction settlement is carried out through the film transaction network platform, various settlement modes are supported, including purchase according to time, purchase according to time period, purchase according to box office separate account, purchase and purchase interruption and the like, the requirements of different users are met, and the sales of film parties are expanded.
In step three, the algorithm for encrypting the movie shown on a general projection device comprises the following steps:
step 1) generating a key;
generating an x, y, z chaotic sequence by adopting a Lorentz equation which is as follows:
dx/dt ═ σ (y-x), dy/dt ═ rx-y-xz, dz/dt ═ xy-bz, where σ, r, b are positive parameters; preferably, the optimal chaotic sequence can be generated by adopting the Lorentz equation of the three parameters, wherein the sigma is 10, the b is 8/3, and the r is 28;
after iterating the Lorentz equation for one thousand times, intercepting the chaotic sequence of M x N groups { x, y, z }; m N is the size of the film frame;
because the value range of the gray value of the image pixel belongs to [0,255], each generated x, y, z chaotic sequence needs to be optimized, and the optimization formula is as follows:
x ' ═ x | -M (| x |), y ' ═ y | -M (| y |), z ' ═ z | -M (| z |), wherein M (| x |) represents the largest integer less than or equal to | x |; m (| y |) represents the largest integer less than or equal to | y |; m (| z |) represents the largest integer less than or equal to | z |; optimizing M x N sets of { x, y, z } chaotic sequences to obtain M x N sets of chaotic sequences
{ x ', y ', z ' }, taking 3 rd, 5 th and 7 th digit of each value in the sequence to form a three-digit decimal number, and then performing complementation operation on the three-digit decimal number and 256 to obtain an 8-digit key stream, thus obtaining M × N sets of final key sequences { xk″,yk″,zk", where k is [1, M N ]]；
Step 2) encrypting one frame of image of the movie; encrypting each pixel point in the frame one by one according to the following formula to finish the encryption of the whole frame image;
in the formula, Rk、GkAnd BkThree component values, x, respectively representing the current pixel point to be encryptedk″,yk″,zk"respectively represent key sequence values, R 'corresponding to the current pixel point component to be encrypted'k-1、G’k-1And B'k-1Respectively is the component value, R ', of the pixel point of which the encryption operation has been completed'k、G’kAnd B'kRespectively obtaining three component values after the current pixel point is subjected to encryption operation; when the first pixel point in each frame image is encrypted, R'k-1、G’k-1And B'k-1The values of (a) are R, G and B of the last pixel in the frame image. And displaying the frame which is subjected to the encryption operation.
And 3) repeating the step 2), and completing the encryption of all the frames of the movie.
The corresponding decryption operation comprises the following steps:
reading a frame of image in the encrypted movie, and inputting values of decryption keys x, y and z;
step (2) step 1) of the process of encrypting the movie is executed, and M x N sets of final key sequences { x }are obtainedk″,yk″,zk", where k is [1, M N ]]；
And (3) sequentially carrying out cracking operation on the second pixel to the last pixel in the encrypted frame, wherein a cracking formula is shown as follows,
after the cracking operation of the last pixel is completed, obtaining the original value of the last pixel, and then performing cracking operation on the 1 st pixel in the encrypted frame image to complete the cracking of the whole frame image;
and (4) performing the cracking operation of the step (3) on all the encrypted frame images of the movie until the decryption of the movie is completed.
In step four, the process of automatically sending the movie and the key to the projection device of the theater via the movie transaction network platform comprises the steps of: 1) accessing projection equipment of a user to a film network transaction platform; 2) when a user purchases a movie, selecting equipment for receiving the movie from projection equipment of the access platform; 3) the platform acquires equipment certificates required by movie key production according to equipment selected by a user, automatically completes a movie encryption process and generates a movie key; 4) the movie purchased by the user, and the generated movie key, are transmitted to the projection device of the access platform over a private network.
The processing method for assisting the film to carry out network release and projection, provided by the invention, takes copyright protection as a core, strictly checks the copyright from the film source, protects the copyright after transaction by encrypting the film, simultaneously realizes automatic transfer encryption of the film and transmits the encrypted film to cinema equipment accessed to a film transaction network platform, and greatly improves the efficiency. In addition, various and flexible transaction modes are provided, the requirements of different users are met, and the sales of the film side are effectively expanded. Through the film network transaction platform, the film resources can be fully utilized, the resource waste is avoided, and the requirements of practical application can be well met.
The above-mentioned embodiments only express the embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (6)
1. A processing method for assisting a movie to be released and shown on a network is characterized by comprising the following steps:
the method comprises the following steps: verifying copyright certification of a film producer;
step two: establishing a film transaction network platform and accessing cinema equipment;
step three: automatically converting and encrypting the film;
step four: automatically sending the film and the key to a projection device of the cinema through a film transaction network platform;
step five: clearing the movie transaction;
the algorithm for encrypting a motion picture for projection on a common projection device comprises the steps of:
step 1) generating a key;
generating an x, y, z chaotic sequence by adopting a Lorentz equation which is as follows:
dx/dt ═ σ (y-x), dy/dt ═ rx-y-xz, dz/dt ═ xy-bz, where σ, r, b are positive parameters;
after iterating the Lorentz equation for one thousand times, intercepting the chaotic sequence of M x N groups { x, y, z }; m N is the size of the film frame;
optimizing each generated x, y, z chaotic sequence,
optimizing the chaotic sequences of the M x N groups of { x, y, z } to obtain M x N groups of chaotic sequences { x ', y ', z ' }, and taking the 3 rd, 5 th and 7 th bits of each value in the sequences to form a three-bit chaotic sequenceTaking decimal number of digits, and performing remainder operation on the decimal number of three digits and 256 to obtain an 8-digit key stream, thereby obtaining M x N groups of final key sequences { xk″,yk″,zk", where k is [1, M N ]]；
Step 2) encrypting one frame of image of the movie;
displaying the frame which executes the encryption operation;
and 3) repeating the step 2), and completing the encryption of all the frames of the movie.
2. The method of claim 1, wherein the formula for optimizing each set of x, y, z chaotic sequences generated is as follows:
x ' ═ x | -M (| x |), y ' ═ y | -M (| y |), z ' ═ z | -M (| z |), wherein M (| x |) represents the largest integer less than or equal to | x |; m (| y |) represents the largest integer less than or equal to | y |; m (| z |) represents the largest integer less than or equal to | z |.
3. A processing method for assisting a movie in a network release presentation according to claim 1 or 2, wherein σ is 10, b is 8/3, and r is 28.
4. The method as claimed in claim 1 or 2, wherein the step of encrypting one frame of image of the movie in step 2) comprises:
encrypting each pixel point in the frame one by one according to the following formula to finish the encryption of the whole frame image;
in the formula, Rk、GkAnd BkThree component values, x, respectively representing the current pixel point to be encryptedk″，yk″，zk"respectively represent key sequences corresponding to pixel point components to be encryptedValue, R'k-1、G’k-1And B'k-1Respectively is the component value, R ', of the pixel point of which the encryption operation has been completed'k、G’kAnd B'kRespectively obtaining three component values after the current pixel point is subjected to encryption operation; when the first pixel point in each frame image is encrypted, R'k-1、G’k-1And B'k-1The values of (a) are R, G and B of the last pixel in the frame image.
5. A method for assisting a movie in a network release presentation as claimed in claim 1 or 2, wherein the corresponding decryption operation comprises the steps of:
reading a frame of image in the encrypted movie, and inputting values of decryption keys x, y and z;
step (2) step 1) of the process of encrypting the movie is executed, and M x N sets of final key sequences { x }are obtainedk″，yk″，zk", where k is [1, M N ]]；
Sequentially carrying out cracking operation on the second pixel to the last pixel in the encrypted frame to obtain the original value of the last pixel after the cracking operation on the last pixel is completed, and then carrying out cracking operation on the 1 st pixel in the encrypted frame image to complete the cracking of the whole frame image;
and (4) performing the cracking operation of the step (3) on all the encrypted frame images of the movie until the decryption of the movie is completed.
6. The method as claimed in claim 1 or 2, wherein the cracking formula for sequentially performing cracking operations on the second pixel to the last pixel in the encrypted frame in step (3) is:
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