CN108777803A - Broadcasting and TV cloud platform video stream processing method, device, equipment and medium - Google Patents

Abstract

The video stream processing method, device, equipment and media provided by the present invention belong to the technical field of video processing. The broadcasting cloud platform video stream processing method divides the video stream data to be processed into a plurality of data blocks; selects some data blocks in the plurality of data blocks as data blocks to be encrypted according to preset rules; The encrypted data block and the unencrypted data block among multiple data blocks are distributed and stored in the cloud. The order of positions is different, so that in the open environment of the radio and television cloud platform, although criminals can read all the video stream data blocks stored on the cloud server, which data blocks belong to the same file and in what order to form the file , illegal intruders have no way of knowing, thereby reducing the risk of new media news videos on the radio and television cloud platform being tampered with by lawbreakers.

Description

Broadcasting and television cloud platform video stream processing method, device, equipment and medium

technical field

The present invention relates to the technical field of video processing, in particular to a video stream processing method, device, equipment and medium of a radio and television cloud platform.

Background technique

Radio and TV new media news video has the characteristics of mass, official, public, open, and on-demand convenience. It has become an important basis for the public, enterprises and institutions to obtain government-related information. However, during the transmission of Internet-based new media video streams, it is vulnerable to attacks by hostile hackers at home and abroad to tamper with normal signals. Once it is broadcast, it will seriously damage the image of the party and the government. However, the existing ones either use the traditional information encryption mechanism, but the overall encryption of massive video stream data is too complicated, which will seriously affect the system performance of video stream playback, thereby greatly limiting the video stream data scale and scalability of this method; or It uses instantaneous electromagnetic pulse emission to monitor the electromagnetic environment security TEMPEST technology. However, TEMPEST's theory and technical methods are based on electromagnetic compatibility EMC, focusing on solving the electronic information leakage formed by electronic equipment during work, in case electromagnetic information is restored to some important content after interception, but for massive video streams , the processing efficiency of this method will be greatly reduced.

Contents of the invention

The video stream processing method, device, equipment, and medium of the radio and television cloud platform provided by the embodiments of the present invention can solve the technical problem in the prior art that there is a high risk of video tampering by lawbreakers.

In the first aspect, a method for processing a video stream on a radio and television cloud platform provided by an embodiment of the present invention includes dividing the video stream data to be processed into a plurality of data blocks; selecting some data blocks in the plurality of data blocks according to preset rules As a data block to be encrypted; each of the data blocks to be encrypted is encrypted; the encrypted data block and the unencrypted data block in the plurality of data blocks are stored in a distributed cloud, wherein the encrypted data The chunks and said unencrypted data chunks are stored in a different order than their positional order in said video stream to be processed.

With reference to the first aspect, an implementation manner of the first aspect, the encrypting each of the data blocks to be encrypted includes: obtaining the sequence number of each data block in the video stream data to be processed; Encrypt each of the data blocks to be encrypted based on the classic Rinjdael algorithm to generate a first ciphertext; respectively perform MD5 operations on the multiple data blocks to generate a globally unique identifier for each data block; based on the position sequence number, the globally unique identifier and the sequence number of the data block to be encrypted to generate a reconstructed file; based on the classic Rinjdael algorithm, encrypt the reconstructed file to generate a second ciphertext.

With reference to the first aspect, in another implementation manner of the first aspect, the encrypted data block and the unencrypted data block among the plurality of data blocks are stored in a distributed cloud, wherein the encrypted The storage sequence of the data block and the unencrypted data block is different from the position sequence in the video stream to be processed, including: performing a sequence number on the position sequence number, the globally unique identifier, and the plurality of data blocks scrambling, recording the target number of the scrambled data block; the first ciphertext and the second ciphertext corresponding to the encrypted data block and the unencrypted data block among the multiple data blocks The corresponding position sequence number and the target number are stored.

With reference to the first aspect, in another implementation manner of the first aspect, the generation of the globally unique identifier of each data block includes: let D←(D\A)∪A', the D represents the The video stream data to be processed, the A represents the one-dimensional array of the k elements, the A' represents the set of encrypted data blocks for the A, and the D\A represents the set of unencrypted data blocks , the MD5 operation is performed on any data block in D to generate MD5(d _i ), and the MD5(d _i ) is used as the name of d _i and the globally unique identifier g _i , wherein the d _i Indicates the i-th data block in D.

In conjunction with the first aspect, in another implementation manner of the first aspect, the encrypting each of the data blocks to be encrypted to generate the first ciphertext includes: generating a ciphertext with a length of 128 bits based on the classic Rinjdael algorithm key K; respectively encrypt the K data blocks to be encrypted by the key K to generate the K first ciphertexts Among them, the Indicates that ai in the one-dimensional array A is encrypted.

In the second aspect, the video stream processing method of the radio and television cloud platform provided by the embodiment of the present invention includes: obtaining the encrypted data block stored in the video stream processing method of the radio and television cloud platform and the unencrypted data block among the plurality of data blocks. data block and storage sequence; decrypt the encrypted data block to obtain the plaintext corresponding to each encrypted data block; The position order of the encrypted data blocks is used to obtain the video stream data to be played.

In the third aspect, the video stream processing device of the radio and television cloud platform provided by the embodiment of the present invention includes a data segmentation module, which is used to divide the video stream data to be processed into a plurality of data blocks; a data selection module, which is used to select the selected Part of the data blocks in the plurality of data blocks are used as data blocks to be encrypted; a data encryption module is used to encrypt each of the data blocks to be encrypted; a storage module is used to store encrypted data blocks and the plurality of data blocks The unencrypted data blocks in the data blocks are stored in a distributed cloud, wherein the storage order of the encrypted data blocks and the unencrypted data blocks is different from the position order in the video stream to be processed.

In a fourth aspect, the video stream processing device of the radio and television cloud platform provided by the embodiment of the present invention includes: a data acquisition unit configured to acquire the encrypted data block stored in the video stream processing method of the radio and television cloud platform and the plurality of Unencrypted data blocks and storage order in the data block; data decryption unit, used to decrypt the encrypted data block, to obtain the plaintext corresponding to each encrypted data block; data generation unit, used for according to the The above storage sequence is rearranged to obtain the video stream data to be played.

In the fifth aspect, an electronic device provided by an embodiment of the present invention includes: a memory, a processor, and a computer program stored in the memory and operable on the processor, wherein the processor executes The computer program realizes the steps of the video stream processing method of the radio and television cloud platform as described in any one of the first aspect; or, when the processor executes the computer program, realizes the video stream processing of the radio and television cloud platform as described in the second aspect method steps.

In a sixth aspect, an embodiment of the present invention provides a storage medium, where instructions are stored on the storage medium, and when the instructions are run on a computer, the computer is made to perform the broadcasting and television broadcasting program described in any one of the first aspect. A method for processing video streams on a cloud platform; or causing the computer to execute the steps of the method for processing video streams on a broadcasting cloud platform as described in the second aspect.

Compared with the prior art, the beneficial effects of the broadcasting cloud platform video stream processing method, device, equipment and medium provided by the embodiment of the present invention are: by dividing the video stream data to be processed into multiple data blocks; selecting according to preset rules Part of the data blocks in the plurality of data blocks are used as data blocks to be encrypted; each of the data blocks to be encrypted is encrypted; and the encrypted data blocks and the unencrypted data blocks in the plurality of data blocks are distributed cloud storage, wherein the storage order of the encrypted data block and the unencrypted data block is different from the position order in the video stream to be processed, so that in an open network environment, criminals can Read all the massive video stream data blocks stored on the cloud server, but which data blocks belong to the same file and in what order to form the file, illegal intruders have no way of knowing, which reduces the new media news video of the radio and television cloud platform Risk of tampering by wrongdoers.

In order to make the above-mentioned objects, features and advantages of the present invention more comprehensible, preferred embodiments will be described in detail below together with the accompanying drawings.

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention, and thus It should be regarded as a limitation on the scope, and those skilled in the art can also obtain other related drawings based on these drawings without creative work.

Fig. 1 is the flowchart of the method for processing the video stream of the radio and television cloud platform provided by the first embodiment of the present invention;

FIG. 2 is a schematic diagram of functional modules of a broadcasting cloud platform video stream processing device provided by a second embodiment of the present invention;

3 is a flowchart of a method for processing video streams on a radio and television cloud platform according to a third embodiment of the present invention;

4 is a schematic diagram of functional modules of a broadcasting cloud platform video stream processing device provided by a fourth embodiment of the present invention;

Fig. 5 is a schematic diagram of an electronic device provided by a fifth embodiment of the present invention.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention. Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

It should be noted that like numerals and letters denote similar items in the following figures, therefore, once an item is defined in one figure, it does not require further definition and explanation in subsequent figures. Meanwhile, in the description of the present invention, the terms "first", "second", etc. are only used to distinguish descriptions, and cannot be understood as indicating or implying relative importance.

Some embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. In the case of no conflict, the following embodiments and features in the embodiments can be combined with each other.

first embodiment

Please refer to FIG. 1 , which is a flowchart of a method for processing video streams on a broadcasting cloud platform provided by an embodiment of the present invention. The specific process shown in FIG. 1 will be described in detail below.

Step S101, dividing the video stream data to be processed into multiple data blocks.

Wherein, the video stream data to be processed is distributed and stored in cloud HDFS.

As an implementation manner, the video stream data to be processed is divided into multiple data blocks according to a preset size, and the number of the multiple data blocks is denoted as N. For example, the size of the video stream data D to be processed is size, and it is divided according to mKB, then the number of blocks N=| size / m |.

Optionally, let the divided data blocks be d ₁ , d ₂ ,..., d _n , and record the sequence number of d _i (d _i ∈ D) in the original file as o _i .

Optionally, before step S101, it also includes:

The original video stream data is compressed, and the compressed video stream data is used as the video stream data to be processed.

Step S102, selecting some data blocks in the plurality of data blocks as data blocks to be encrypted according to preset rules.

Wherein, the number of the partial data blocks is smaller than the number corresponding to the plurality of data blocks.

Continuing to take the foregoing example as an example, for example, if the number of partial data blocks is k, then said k is smaller than the total number N of blocks.

As an implementation manner, some data blocks among the plurality of data blocks are randomly selected as data blocks to be encrypted. For example, randomly generate the number of encrypted data blocks, said number is denoted as k, said k is greater than or equal to zero, and less than the sum N of said multiple data blocks; Array A, let A={a ₁ , a ₂ ,..., a _k }, where a _i is a random integer of [0, N], indicating that the data block to be encrypted is in the video stream to be processed The sequence numbers of the positions; then the k data blocks are the data blocks to be encrypted.

Step S103, encrypting each of the data blocks to be encrypted.

As an implementation manner, obtain the position sequence number of each data block in the video stream data to be processed; encrypt each data block to be encrypted based on the classic Rinjdael algorithm, and generate a first ciphertext; A plurality of data blocks are respectively subjected to MD5 calculations to generate a globally unique identifier of each data block; a reconstructed file is generated based on the sequence number of the position, the globally unique identifier and the sequence number of the data block to be encrypted; based on the The classic Rinjdael algorithm encrypts the reconstructed file to generate a second ciphertext.

Continuing to take the aforementioned example as an example, specifically, first obtain the position sequence number o _i of each data block in the video stream data to be processed, and then generate a key K with a length of 128 bits based on the classic Rinjdael algorithm; through the The key K encrypts the K data blocks to be encrypted respectively to generate the K first ciphertexts Among them, the Indicates that a _i in the one-dimensional array A is encrypted. Then let D←(D\A)∪A', said A' represents the data encrypted to the data in A, and said D\A represents an unencrypted data block, then in said D Perform MD5 operation on any data block of , generate MD5(d _i ), use MD5(d _i ) as the name of d _i and globally unique identifier g _i , where the d _i represents the i-th in the D data block. Then store the corresponding relationship of o _i and g _i with the Merkle trusted tree, and generate the reconstructed file f together with the sequence number of the data block to be encrypted, and encrypt the f by using the classic Rinjdael algorithm to generate the second Ciphertext E _K (f).

Wherein, the corresponding relationship between o _i and g _i means that the o _i represents the order of the i-th data block, and the g _i represents the globally unique identifier of the i-th data block after the MD5 operation .

Step S104, storing the encrypted data block and the unencrypted data block among the plurality of data blocks in a distributed cloud, wherein the storage sequence of the encrypted data block and the unencrypted data block is the same as that in the The order of positions in the video stream to be processed is different.

Wherein, the storage order refers to the order in which all data blocks are stored in the cloud HDFS during storage, and is not the same as the position order in the video stream to be processed. The position order refers to the positional relationship of each data block in the video stream to be processed at the beginning.

As an implementation, the sequence number of the position, the globally unique identifier, and the plurality of data blocks are scrambled, and the target numbers of the scrambled data blocks are recorded; The first ciphertext and the second ciphertext, and the position sequence number and the target number corresponding to the unencrypted data block in the plurality of data blocks are stored.

Among them, each data block can be scrambled and stored after encryption, or multiple data blocks can be scrambled before encryption, and then the data block to be encrypted is selected. In short, those skilled in the art can selection, which is not specifically limited here.

For example, first generate a random number i between 1-N, use the random scrambling linear congruence method to complete the wrong link of o _i , g _i and video stream data block d _i , and generate the number of the data block in disordered order, that is, be The target number X _i of the shuffled data block. Then the ciphertext E _K (f), X _i , And D\A is uploaded to the radio and television cloud center for storage to ensure data security and reliability.

The broadcasting and television cloud platform video stream processing method provided by the present embodiment divides the video stream data to be processed into a plurality of data blocks; selects part of the data blocks in the plurality of data blocks according to preset rules as data blocks to be encrypted; Each of the data blocks to be encrypted is encrypted; the encrypted data blocks and the unencrypted data blocks in the plurality of data blocks are stored in a distributed cloud, wherein the encrypted data blocks and the unencrypted The storage order of the data blocks is different from the position order in the video stream to be processed, so that in an open network environment, criminals can read all the massive video stream data blocks stored on the cloud server, but which ones The data blocks belong to the same file and the order in which the file is composed is unknown to illegal intruders, thereby reducing the risk of new media news videos on the broadcasting cloud platform being tampered with by lawbreakers.

second embodiment

Corresponding to the video stream processing method of the radio and television cloud platform in the first embodiment, FIG. 2 shows a one-to-one corresponding video stream processing device of the radio and television cloud platform using the video stream processing method of the radio and television cloud platform shown in the first embodiment. As shown in Figure 2, the video stream processing device 400 of the broadcasting and television cloud platform includes a data segmentation module 410, a data selection module 420, a data encryption module 430 and a storage module 440. Correspondingly, to avoid redundant description, this embodiment does not describe in detail one by one.

The data splitting module 410 is configured to split the video stream data to be processed into multiple data blocks.

As an implementation manner, the data splitting module 410 is configured to split the video stream data to be processed into multiple data blocks according to a preset size.

The data selection module 420 is configured to select some data blocks in the plurality of data blocks as data blocks to be encrypted according to preset rules.

As an implementation, the data selection module 420 is configured to randomly select some data blocks in the multiple data blocks as data blocks to be encrypted, specifically, randomly generate the number of encrypted data blocks, the number The number is denoted as k, and the k is greater than or equal to zero and less than or equal to the sum N of the plurality of data blocks; a one-dimensional array A of the k elements is generated, and A={a ₁ ,a ₂ ,.. ., a _k }, wherein, a _i is a random integer of [0, N], indicating the sequential numbering of the positions corresponding to the data blocks to be encrypted; the k data blocks are used as data blocks to be encrypted.

A data encryption module 430, configured to encrypt each of the data blocks to be encrypted.

As an implementation, the data encryption module 430 is used to obtain the sequence number of each data block in the video stream data to be processed; encrypt each data block to be encrypted based on the classic Rinjdael algorithm, and generate The first ciphertext; respectively performing MD5 calculation on the multiple data blocks to generate a globally unique identifier for each data block; based on the position sequence number, the globally unique identifier and the sequence number of the data block to be encrypted Generate a reconstructed file; encrypt the reconstructed file based on the classic Rinjdael algorithm to generate a second ciphertext E _K (f).

Wherein, the generating the globally unique identifier of each data block includes: order D←(D\A)∪A′, the D represents the video stream data to be processed, and the A represents the k A one-dimensional array of elements, the A' represents the set of encrypted data blocks of the A, and the D\A represents the set of unencrypted data blocks, then perform MD5 on any data block in the D operation to generate MD5(d _i ), and use the MD5(d _i ) as the name of d _i and the globally unique identifier g _i , wherein the d _i represents the i-th data block in the D.

Encrypting each of the data blocks to be encrypted to generate the first ciphertext includes: generating a key K with a length of 128 bits based on the classic Rinjdael algorithm; The data block to be encrypted is encrypted to generate the K first ciphertexts Among them, the Indicates that a _i in the one-dimensional array A is encrypted.

The storage module 440 is configured to perform distributed cloud storage of the encrypted data block and the unencrypted data block among the plurality of data blocks, wherein the storage order of the encrypted data block and the unencrypted data block is Different from the order of position in the pending video stream.

As an implementation, the storage module 440 is used to scramble the position sequence number, the globally unique identifier, and the multiple data blocks, and record the target number of the scrambled data block; The first ciphertext and the second ciphertext corresponding to the subsequent data block, and the position sequence number and the target number corresponding to the unencrypted data block in the plurality of data blocks are stored.

third embodiment

Please refer to FIG. 3 , which is a flow chart of a method for processing video streams on a broadcasting cloud platform provided by an embodiment of the present invention, and the method is applied to a client. The specific process shown in FIG. 3 will be described in detail below.

In step S201, the encrypted data block stored in the video stream processing method of the radio and television cloud platform, the unencrypted data block and the storage order of the plurality of data blocks are acquired.

The decryption process of the video stream is realized by obtaining the encrypted data block stored in the video stream processing method of the radio and television cloud platform provided by the first embodiment, the unencrypted data block and the storage order of the plurality of data blocks.

As an implementation manner, continue to take the example of the first embodiment as an example, download E _K (f), and d _i .

Step S202, decrypting the encrypted data block to obtain the plaintext corresponding to each encrypted data block.

As an implementation, the E _K (f) corresponding to the encrypted data block is decrypted to obtain the reconstructed file f, and the corresponding relationship between o _i and g _i is obtained through the reconstructed file f and the encrypted The number a _i (i∈[0,k]) of the data block. Then for the first ciphertext Decrypt to get the plaintext of a _i .

Step S203, according to the storage order, rearrange the positions of the plaintext and the unencrypted data blocks in the plurality of data blocks to obtain video stream data to be played.

In this embodiment, according to the correspondence between o _i and g _i and the number a _i (i∈[0,k]) of the encrypted data block, the plaintext and the unencrypted data blocks in the multiple data blocks are rearranged The position order of the data blocks of the data block is obtained to obtain the video stream data to be played. Thus, the user can play based on the obtained video stream data to be played.

The broadcasting and television cloud platform video stream processing method adopted in this embodiment first obtains the encrypted data blocks stored in the broadcasting and television cloud platform video stream processing method provided in the first embodiment and the unencrypted data blocks in the plurality of data blocks. data blocks and storage order, and then decrypt the encrypted data blocks to obtain the plaintext corresponding to each encrypted data block, and finally rearrange the plaintext and the plurality of data blocks according to the storage order The position sequence of the unencrypted data blocks in the file is obtained to obtain the video stream data to be played, so that the user can analyze the encrypted video file based on legal means, so that the user can play it normally, and avoid criminals who can read all stored files. There are a large number of video stream data blocks on the cloud server, but which data blocks belong to the same file and in what order constitute the file, illegal intruders have no way of knowing, further reducing the new media news video on the radio and television cloud platform being tampered with by lawbreakers risks of.

Fourth embodiment

Corresponding to the video stream processing method of the radio and television cloud platform in the third embodiment, FIG. 4 shows a one-to-one corresponding video stream processing device of the radio and television cloud platform using the video stream processing method of the radio and television cloud platform shown in the third embodiment. As shown in Figure 4, the video stream processing device 500 of the radio and television cloud platform includes a data acquisition unit 510, a data decryption unit 520, and a data generation unit 530. To repeat, this embodiment does not describe in detail one by one.

The data acquisition unit 510 is configured to acquire the encrypted data block stored in the broadcasting cloud platform video stream processing method, the unencrypted data block and the storage sequence among the plurality of data blocks.

The data decryption unit 520 is configured to decrypt the encrypted data blocks to obtain plaintext corresponding to each encrypted data block.

The data generation unit 530 is configured to rearrange the positions of the plaintext and the unencrypted data blocks in the plurality of data blocks according to the storage order, so as to obtain video stream data to be played.

fifth embodiment

As shown in FIG. 5 , it is a schematic diagram of an electronic device 300 . The electronic device 300 includes a memory 302, a processor 304, and a computer program 303 stored in the memory 302 and operable on the processor 304. When the computer program 303 is executed by the processor 304, the first embodiment is realized. In order to avoid repetition, the video stream processing method of the radio and television cloud platform described in the example will not be repeated here. Alternatively, when the computer program 303 is executed by the processor 304, the functions of each step in the video stream processing method of the radio and television cloud platform described in the third embodiment are realized, and to avoid repetition, details are not repeated here. Alternatively, when the computer program 303 is executed by the processor 304, the functions of each model/unit in the video stream processing device of the radio and television cloud platform described in the second embodiment are implemented. To avoid repetition, details are not repeated here. Alternatively, when the computer program 303 is executed by the processor 304, the functions of each model/unit in the video stream processing device of the radio and television cloud platform described in the fourth embodiment are implemented. To avoid repetition, details are not repeated here.

Exemplarily, the computer program 303 can be divided into one or more modules/units, and one or more modules/units are stored in the memory 302 and executed by the processor 304 to implement the present invention. One or more modules/units may be a series of computer program instruction segments capable of accomplishing specific functions, and the instruction segments are used to describe the execution process of the computer program 303 in the electronic device 300 . For example, the computer program 303 can be divided into the data segmentation module 410, the data selection module 420, the data encryption module 430 and the storage module 440 in the second embodiment, and the specific functions of each module are as described in the first embodiment or the second embodiment. , and will not be repeated here.

The electronic device 300 may be computing devices such as desktop computers, notebooks, palmtop computers, and cloud servers.

Wherein, the memory 302 can be, but not limited to, random access memory (Random Access Memory, RAM), read only memory (Read Only Memory, ROM), programmable read only memory (Programmable Read-Only Memory, PROM), can Erasable Programmable Read-Only Memory (EPROM), Electric Erasable Programmable Read-Only Memory (EEPROM), etc. Wherein, the memory 302 is used to store a program, and the processor 304 executes the program after receiving an execution instruction, and the process definition method disclosed in any embodiment of the foregoing embodiments of the present invention can be applied to the processor 304, or implemented by processor 304 .

The processor 304 may be an integrated circuit chip with signal processing capability. The above-mentioned processor 304 can be a general-purpose processor, including a central processing unit (Central Processing Unit, CPU), a network processor (NetworkProcessor, NP), etc.; it can also be a digital signal processor (Digital Signal Processor, DSP), a dedicated integrated Circuit (Application Specific Integrated Circuit, ASIC), off-the-shelf programmable gate array (Field-Programmable Gate Array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components. Various methods, steps and logic block diagrams disclosed in the embodiments of the present invention may be implemented or executed. A general-purpose processor may be a microprocessor, or the processor may be any conventional processor, or the like.

It can be understood that the structure shown in FIG. 5 is only a schematic structural diagram of the electronic device 300 , and the electronic device 300 may also include more or fewer components than those shown in FIG. 5 . Each component shown in Fig. 5 may be implemented by hardware, software or a combination thereof.

Sixth embodiment

An embodiment of the present invention also provides a storage medium, on which instructions are stored. When the instructions are run on a computer, the computer program is executed by a processor to implement the radio and television cloud in the first embodiment. In order to avoid repetition, the platform video stream processing method will not be repeated here. Alternatively, when the computer program is executed by the processor, the functions of each step in the method for processing the video stream on the broadcasting and television cloud platform of the third embodiment are realized, and details are not repeated here to avoid repetition. Alternatively, when the computer program is executed by the processor, the functions of each model/unit in the video stream processing device of the broadcasting and television cloud platform in the second embodiment are implemented, and in order to avoid repetition, details are not repeated here. Alternatively, when the computer program is executed by the processor, the functions of each model/unit in the video stream processing device of the radio and television cloud platform described in the fourth embodiment are implemented. To avoid repetition, details are not repeated here.

Through the description of the above embodiments, those skilled in the art can clearly understand that the present invention can be implemented by hardware, or by means of software plus a necessary general-purpose hardware platform. Based on this understanding, the technical solution of the present invention It can be embodied in the form of software products, which can be stored in a non-volatile storage medium (which can be CD-ROM, U disk, mobile hard disk, etc.), and include several instructions to make a computer device (which can be It is a personal computer, a server, or a network device, etc.) to execute the method of each implementation scenario of the present invention.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention. It should be noted that like numerals and letters denote similar items in the following figures, therefore, once an item is defined in one figure, it does not require further definition and explanation in subsequent figures.

Claims (10)

1. A broadcasting and television cloud platform video stream processing method, is characterized in that, comprises: Divide the video stream data to be processed into multiple data blocks; selecting some data blocks among the plurality of data blocks as data blocks to be encrypted according to preset rules; Encrypt each of the data blocks to be encrypted; The encrypted data block and the unencrypted data block in the plurality of data blocks are stored in a distributed cloud, wherein the storage order of the encrypted data block and the unencrypted data block is the same as that in the to-be-processed The order of positions in the video stream is different. 2. The method according to claim 1, wherein said encrypting each said data block to be encrypted comprises: Obtain the sequence number of the position of each data block in the video stream data to be processed; Encrypt each of the data blocks to be encrypted based on the classic Rinjdael algorithm to generate the first ciphertext; Perform MD5 calculations on the multiple data blocks to generate a globally unique identifier for each data block; generating a reconstructed file based on the sequence number of the position, the globally unique identifier and the sequence number of the data block to be encrypted; Encrypt the reconstructed file based on the classic Rinjdael algorithm to generate a second ciphertext. 3. The method according to claim 2, wherein the encrypted data block and the unencrypted data block in the plurality of data blocks are stored in a distributed cloud, wherein the encrypted data The storage order of chunks and said unencrypted data chunks is different from the order of position in said pending video stream, including: Scrambling the position sequence number, the globally unique identifier, and the plurality of data blocks, and recording the target numbers of the scrambled data blocks; storing the first ciphertext and the second ciphertext corresponding to the encrypted data block, and the position sequence number and the target number corresponding to the unencrypted data block among the plurality of data blocks . 4. The method according to claim 2, wherein said generating the globally unique identifier of each data block comprises: Let D←(D\A)∪A′, the D represents the video stream data to be processed, the A represents the one-dimensional array of k elements, and the A′ represents the encrypted A collection of data blocks, the D\A represents a collection of unencrypted data blocks, then an MD5 operation is performed on any data block in the D to generate MD5(d _i ), and the MD5(d _i ) is used as The name of d _i and the globally unique identifier g _i , wherein said d _i represents the i-th data block in said D. 5. The method according to claim 4, wherein said encrypting each said data block to be encrypted to generate a first ciphertext comprises: Generate a key K with a length of 128 bits based on the classic Rinjdael algorithm; Encrypt the K data blocks to be encrypted respectively by using the key K to generate the K first ciphertexts Among them, the Indicates that a _i in the one-dimensional array A is encrypted. 6. A method for processing video streams on a radio and television cloud platform, comprising: Obtaining the encrypted data blocks stored in the video stream processing method of the radio and television cloud platform described in any one of claims 1-5 and the unencrypted data blocks and storage order in the plurality of data blocks; Decrypting the encrypted data blocks to obtain plaintext corresponding to each encrypted data block; According to the storage order, rearrange the positions of the plaintext and the unencrypted data blocks in the plurality of data blocks to obtain video stream data to be played. 7. A broadcasting and television cloud platform video stream processing device, characterized in that, comprising: A data segmentation module, configured to divide the video stream data to be processed into multiple data blocks; A data selection module, configured to select some of the multiple data blocks as data blocks to be encrypted according to preset rules; A data encryption module, configured to encrypt each of the data blocks to be encrypted; A storage module, configured to store the encrypted data block and the unencrypted data block in the plurality of data blocks in a distributed cloud, wherein the storage order of the encrypted data block and the unencrypted data block is the same as The order of positions in the video stream to be processed is different. 8. A radio and television cloud platform video stream processing device, characterized in that it comprises: The data acquisition unit is used to acquire the encrypted data blocks stored in the broadcasting cloud platform video stream processing method according to any one of claims 1-5 and the unencrypted data blocks and storage order of the plurality of data blocks ; A data decryption unit, configured to decrypt the encrypted data blocks to obtain plaintext corresponding to each encrypted data block; The data generating unit is configured to rearrange the positions of the plaintext and the unencrypted data blocks in the plurality of data blocks according to the storage order, so as to obtain video stream data to be played. 9. An electronic device, comprising: a memory, a processor, and a computer program stored in the memory and operable on the processor, wherein the processor executes the computer program When realizing the step of the video stream processing method of the radio and television cloud platform as described in any one of claims 1 to 5; or, when the processor executes the computer program, realize the video stream processing method of the radio and television cloud platform as claimed in claim 6 step. 10. A storage medium, characterized in that instructions are stored on the storage medium, and when the instructions are run on a computer, the computer is made to execute the broadcasting cloud platform according to any one of claims 1-5 A video stream processing method; or causing the computer to execute the steps of the broadcasting and television cloud platform video stream processing method according to claim 6.