CN114979717B - Differential video encryption method based on equipment decoding capability and security chip device - Google Patents
Differential video encryption method based on equipment decoding capability and security chip device Download PDFInfo
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- CN114979717B CN114979717B CN202210879169.3A CN202210879169A CN114979717B CN 114979717 B CN114979717 B CN 114979717B CN 202210879169 A CN202210879169 A CN 202210879169A CN 114979717 B CN114979717 B CN 114979717B
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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, manipulating MPEG-4 scene graphs
- H04N21/2347—Processing of video elementary streams, e.g. splicing of video streams, manipulating MPEG-4 scene graphs involving video stream encryption
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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]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs
- H04N21/4408—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs involving video stream encryption, e.g. re-encrypting a decrypted video stream for redistribution in a home network
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Abstract
The embodiment of the invention discloses a difference video encryption method based on equipment decoding capability and a security chip device, wherein the method comprises the following steps: acquiring decoding parameter information of opposite-end equipment, wherein the decoding parameter information comprises processor parameters and memory utilization rate; determining the encryption algorithm grade of the video stream and frame image similarity encryption parameters according to the decoding parameter information, wherein the number of independent encryption blocks of different images corresponding to different frame image similarity encryption parameters is in proportion; and encrypting video stream data based on the encryption algorithm grade and the frame image similarity encryption parameter, and transmitting the encrypted data to the opposite terminal equipment. The scheme solves the problem that more computing power and hardware resources are required to be consumed in the existing video stream data encryption process, and has the advantages of maximally relieving computing power, improving transmission processing speed and having stronger flexibility and applicability on the basis of ensuring the safety of data information.
Description
Technical Field
The embodiment of the application relates to the technical field of video stream processing, in particular to a difference video encryption method based on equipment decoding capacity and a security chip device.
Background
In order to improve the security level of video stream transmission, a brute force algorithm with a long password is generally used, and the problem that the video stream data can be well protected against attack and crack in the security level can be solved.
In the related art, patent document CN113709493A discloses a video stream data encryption security chip device of a KVM system, which includes a PCIe controller, a video encoding module, and an encryption module, where the PCIe controller is configured to write original video stream data into a DDR; the video coding module is used for reading original video stream data from the DDR, performing compression coding processing on the original video stream data to obtain coded video stream data, inputting the coded video stream data into the encryption module to be encrypted to obtain encrypted video stream data, and finally writing the encrypted video stream data into the DDR. Therefore, the security chip device carries out close coupling design on the video coding module and the encryption module, so that the encryption process of video stream data is completed by hardware, the participation of a CPU (central processing unit) is avoided, the reading and writing frequency of a system bus and DDR (double data rate) is reduced, and the working efficiency of a video encryption process in a KVM (keyboard, video and mouse) system is improved. In addition, the application also provides a video stream data encryption method, equipment and a readable storage medium of the KVM system, and the technical effect of the method corresponds to that of the security chip device. However, the above-described video stream encryption method requires a large amount of computation power and hardware resources, and does not consider the processing situation at the decryption side, and needs to be improved.
Disclosure of Invention
The embodiment of the invention provides a difference video encryption method based on equipment decoding capacity and a security chip device, solves the problem that more computing power and hardware resources are needed to be consumed in the existing video stream data encryption process, furthest relieves the computing power on the basis of ensuring the security of data information, improves the transmission processing speed, and has stronger flexibility and applicability.
In a first aspect, an embodiment of the present invention provides a differential video encryption method based on device decoding capability, where the method includes:
acquiring decoding parameter information of opposite terminal equipment, wherein the decoding parameter information comprises processor parameters and memory utilization rate;
determining the encryption algorithm grade of the video stream and a frame image similarity encryption parameter according to the decoding parameter information, wherein different frame image similarity encryption parameters correspond to the number of independent encryption blocks of different images in proportion;
and encrypting video stream data based on the encryption algorithm grade and the frame image similarity encryption parameter, and transmitting the encrypted data to the opposite terminal equipment.
Optionally, the obtaining decoding parameter information of the peer device includes:
the current equipment sends a decoding parameter acquisition request to opposite-end equipment at intervals of preset time;
and the opposite-end equipment calculates the memory utilization rate and the processor occupancy rate in a preset time period according to the decoding parameter acquisition request, and feeds back the memory utilization rate and the processor occupancy rate to the current equipment.
Optionally, the determining, according to the decoding parameter information, an encryption algorithm level of a video stream and a frame image similarity encryption parameter includes:
determining the encryption algorithm grade of the video stream according to the processor occupancy rate;
and determining a frame image similarity encryption parameter according to the memory utilization rate.
Optionally, the determining the encryption algorithm level of the video stream according to the processor occupancy includes:
determining a falling preset occupancy rate interval according to the processor occupancy rate;
and determining a corresponding preset encryption algorithm grade according to the preset occupancy rate interval, wherein the higher the processor occupancy rate corresponding to the preset occupancy rate interval is, the lower the corresponding encryption algorithm grade is.
Optionally, the determining a frame image similarity encryption parameter according to the memory usage rate includes:
determining the number proportion of independent encryption blocks of the image according to the memory utilization rate;
and determining the similarity coefficient of the image block based on the number ratio of the independent encryption blocks so as to divide the image independent encryption blocks and the dependent encryption blocks.
Optionally, the encrypting video stream data based on the encryption algorithm level and the frame image similarity encryption parameter includes:
and encrypting the image in the video stream data according to the encryption algorithm grade determined by the decoding parameter information and the frame image similarity encryption parameter determined by the memory utilization rate.
Optionally, the encrypting the image in the video stream data according to the encryption algorithm grade determined according to the decoding parameter information and the frame image similarity encryption parameter determined according to the memory usage rate includes:
dividing an independent encryption block and a dependent encryption block of the image according to the frame image similarity encryption parameter to obtain an independent encryption block image and a combined encryption block image, wherein the size of the combined encryption block image is larger than that of the independent encryption block image;
and encrypting the independent encryption block image and the combined encryption block image respectively by using the determined encryption algorithm.
In a second aspect, an embodiment of the present invention further provides a differential video encryption security chip apparatus based on device decoding capability, including:
the information acquisition module is configured to acquire decoding parameter information of opposite-end equipment, wherein the decoding parameter information comprises processor parameters and memory utilization rate;
the parameter determining module is configured to determine an encryption algorithm grade of a video stream and a frame image similarity encryption parameter according to the decoding parameter information, wherein the number of independent encryption blocks of different images corresponding to different frame image similarity encryption parameters is in proportion;
and the encryption module is configured to encrypt video stream data based on the encryption algorithm grade and the frame image similarity encryption parameter, and transmit the encrypted data to the opposite terminal equipment.
In a third aspect, an embodiment of the present invention further provides a device for differential video encryption based on device decoding capability, where the device includes:
one or more processors;
a memory security chip device for storing one or more programs,
when executed by the one or more processors, cause the one or more processors to implement a method for differential video encryption based on device decoding capability according to an embodiment of the present invention.
In a fourth aspect, embodiments of the present invention further provide a storage medium containing computer-executable instructions, which when executed by a computer processor, are configured to perform a method for differential video encryption based on device decoding capability according to embodiments of the present invention.
In a fifth aspect, the present application further provides a computer program product, where the computer program product includes a computer program, where the computer program is stored in a computer-readable storage medium, and at least one processor of the device reads the computer-readable storage medium and executes the computer program, so that the device executes the differential video encryption method based on device decoding capability according to the present application.
In the embodiment of the invention, decoding parameter information of opposite-end equipment is obtained, wherein the decoding parameter information comprises processor parameters and memory utilization rate; determining the encryption algorithm grade of the video stream and frame image similarity encryption parameters according to the decoding parameter information, wherein the number of independent encryption blocks of different images corresponding to different frame image similarity encryption parameters is in proportion; and encrypting video stream data based on the encryption algorithm grade and the frame image similarity encryption parameter, and transmitting the encrypted data to the opposite terminal equipment. The scheme solves the problem that more computing power and hardware resources are required to be consumed in the existing video stream data encryption process, and has the advantages of maximally relieving computing power, improving transmission processing speed and having stronger flexibility and applicability on the basis of ensuring the safety of data information.
Drawings
Fig. 1 is a flowchart of a differential video encryption method based on device decoding capability according to an embodiment of the present invention;
fig. 2 is a flowchart of a method for determining encryption algorithm level and frame image similarity encryption parameters according to an embodiment of the present invention;
fig. 3 is a flowchart of a method for encrypting video stream data based on an encryption algorithm level and a frame image similarity encryption parameter according to an embodiment of the present invention;
fig. 4 is a block diagram of a differential video encryption security chip device based on device decoding capability according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a device for differential video encryption method based on device decoding capability according to an embodiment of the present invention.
Detailed Description
The embodiments of the present invention will be described in further detail with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of and not restrictive on the broad invention. It should be further noted that, for convenience of description, only some structures, not all structures, relating to the embodiments of the present invention are shown in the drawings.
Fig. 1 is a flowchart of a differential video encryption method based on device decoding capability according to an embodiment of the present invention, where an embodiment of the present invention specifically includes the following steps:
step S101, decoding parameter information of opposite terminal equipment is obtained, wherein the decoding parameter information comprises processor parameters and memory utilization rate.
In one embodiment, when the current device sends video to the peer device, for example, the current device may encrypt video stream data through an integrated security chip to send the encrypted data to the peer device. Firstly, decoding parameter information of opposite-end equipment is obtained, wherein the decoding parameter information comprises processor parameters and memory utilization rate. Optionally, the decoding parameter information may be obtained from the server or a communication connection may be established with the peer device and a request may be sent to the peer device to obtain the decoding parameter information.
Optionally, the obtaining decoding parameter information of the peer device includes: the current equipment sends a decoding parameter acquisition request to opposite-end equipment at intervals of preset time; and the opposite-end equipment calculates the memory utilization rate and the processor occupancy rate in a preset time period according to the decoding parameter acquisition request, and feeds back the memory utilization rate and the processor occupancy rate to the current equipment.
Step S102, determining the encryption algorithm grade of the video stream and the frame image similarity encryption parameter according to the decoding parameter information, wherein the different frame image similarity encryption parameters correspond to the number of independent encryption blocks of different images in proportion.
In one embodiment, when video stream encryption is performed, the encryption algorithm level of the corresponding video stream and the frame image similarity encryption parameter are determined based on different decoding parameter information, wherein different encryption algorithm levels correspond to encryption algorithms with different complexities, and different frame image similarity encryption parameters correspond to the number of independent encryption blocks of different images in proportion.
Optionally, the determining, according to the decoding parameter information, an encryption algorithm level of a video stream and a frame image similarity encryption parameter includes: determining the encryption algorithm grade of the video stream according to the processor occupancy rate; and determining a frame image similarity encryption parameter according to the memory utilization rate.
And S103, encrypting video stream data based on the encryption algorithm grade and the frame image similarity encryption parameter, and transmitting the encrypted data to the opposite terminal equipment.
In one embodiment, after the encryption algorithm level and the frame image similarity encryption parameter are determined, video stream data is encrypted based on the encryption algorithm level and the frame image similarity encryption parameter, and encrypted data is transmitted to the opposite terminal device. The different encryption algorithm grades correspond to encryption algorithms with different complexities, and the number of the independent encryption blocks of different images corresponding to different frame image similarity encryption parameters is in proportion. Optionally, one or more corresponding encryption algorithms are set in advance for different encryption algorithm levels, and after the encryption algorithm level is determined, one of the one or more corresponding encryption algorithms is selected as the current video stream encryption algorithm, which may be selected randomly or sequentially as an example. In the process of encrypting the video stream, because other frame images are encoded based on the I frame, the P frame and the B frame, optionally, only some frame images may be encrypted, and the selection of the specific encrypted frame is not limited, and the scheme only defines the encryption condition of the frame images needing to be encrypted. Specifically, the frame image is encrypted based on the determined frame image similarity encryption parameter, so that encryption is dynamically performed by using different algorithms and different frame image encryption modes.
According to the above, by acquiring the decoding parameter information of the opposite terminal device, the decoding parameter information includes the processor parameter and the memory usage rate; determining the encryption algorithm grade of the video stream and frame image similarity encryption parameters according to the decoding parameter information, wherein the number of independent encryption blocks of different images corresponding to different frame image similarity encryption parameters is in proportion; and encrypting video stream data based on the encryption algorithm grade and the frame image similarity encryption parameter, and transmitting the encrypted data to the opposite terminal equipment. The scheme solves the problem that more computing power and hardware resources are required to be consumed in the existing video stream data encryption process, and has the advantages of maximally relieving computing power, improving transmission processing speed and having stronger flexibility and applicability on the basis of ensuring the safety of data information.
Fig. 2 is a flowchart of a method for determining encryption algorithm levels and frame image similarity encryption parameters according to an embodiment of the present invention. On the basis of the above technical solution, a specific method for determining encryption algorithm level and frame image similarity encryption parameter is provided, as shown in fig. 2, which specifically includes:
step S201, the current device sends a decoding parameter acquisition request to the peer device at intervals of a preset time, and the peer device calculates a memory usage rate and a processor occupancy rate in a preset time period according to the decoding parameter acquisition request, and feeds back the memory usage rate and the processor occupancy rate to the current device.
Step S202, a preset occupancy rate interval is determined according to the processor occupancy rate, and a corresponding preset encryption algorithm grade is determined according to the preset occupancy rate interval, wherein the higher the processor occupancy rate corresponding to the preset occupancy rate interval is, the lower the corresponding encryption algorithm grade is.
In one embodiment, a plurality of preset occupancy rate intervals are set, each preset occupancy rate interval comprises an occupancy rate lower limit and an occupancy rate on-line, the occupancy rate of a processor of an opposite-end device is determined, and the preset occupancy rate interval in which the processor falls is determined. The preset occupancy rate interval corresponds to a preset encryption algorithm grade, and the higher the processor occupancy rate corresponding to the preset occupancy rate interval is, the lower the corresponding encryption algorithm grade is.
Step S203, determining the number ratio of independent encryption blocks of the image according to the memory usage rate, and determining a similarity coefficient of the image block based on the number ratio of the independent encryption blocks, so as to divide the image independent encryption block and the dependent encryption block.
In one embodiment, different memory usage rates are provided with corresponding different numbers of independent encryption blocks, wherein each frame of image is divided into an image independent encryption block and a non-independent encryption block, and the number of the independent encryption blocks is the number of the blocks which are independently encrypted in all the division units. Illustratively, a frame of image is divided into 128 coding block units, and if the number of independent encryption blocks is 25%, the number of independent encryption blocks of the image is 32, and the number of non-independent encryption blocks is 96. The mode that different memory usage rates are provided with corresponding different numbers of independent encryption blocks may be to set a record table, where the numbers of the independent encryption blocks set corresponding to the different memory usage rates are recorded in the table to determine the number of the independent encryption blocks corresponding to the currently determined memory usage rate by querying. When the independent encryption blocks and the dependent encryption blocks are divided, the blocks with the high consistent similarity are divided into the dependent encryption blocks, the blocks with the large similarity difference change are determined to be the independent encryption blocks, and at the moment, the number of the different independent encryption blocks and the number of the dependent encryption blocks are controlled by setting the similarity value, namely the number ratio of the independent encryption blocks is controlled. If the similarity requirement of classification is lower, the more the divided non-independent encryption blocks are, the encryption processing is carried out on the non-independent encryption blocks as a whole during encoding, and the encryption processing is carried out on the independent encryption blocks independently, otherwise, the higher the similarity requirement is, the fewer the non-independent encryption blocks are, the more the independent encoding blocks are, and the consumption of computing resources is relatively increased at the moment. When the memory utilization rate is higher, the number of the independent encryption blocks is smaller, and the similarity requirement of classification is lower during the corresponding division processing.
And S204, encrypting video stream data based on the encryption algorithm grade and the frame image similarity encryption parameter, and transmitting the encrypted data to the opposite terminal equipment.
According to the above, by acquiring the decoding parameter information of the opposite terminal device, the decoding parameter information includes the processor parameter and the memory usage rate; determining the encryption algorithm grade of the video stream and frame image similarity encryption parameters according to the decoding parameter information, wherein the number of independent encryption blocks of different images corresponding to different frame image similarity encryption parameters is in proportion; and encrypting video stream data based on the encryption algorithm grade and the frame image similarity encryption parameter, and transmitting the encrypted data to the opposite terminal equipment. The scheme solves the problem that more computing power and hardware resources are required to be consumed in the existing video stream data encryption process, and has the advantages of maximally relieving computing power, improving transmission processing speed and having stronger flexibility and applicability on the basis of ensuring the safety of data information.
Fig. 3 is a flowchart of a method for encrypting video stream data based on an encryption algorithm level and a frame image similarity encryption parameter according to an embodiment of the present invention. On the basis of the above technical solution, a specific method for encrypting video stream data based on encryption algorithm level and frame image similarity encryption parameter is provided, as shown in fig. 3, which specifically includes:
step S301, the current device sends a decoding parameter acquisition request to the opposite device every preset time, and the opposite device calculates the memory utilization rate and the processor occupancy rate in a preset time period according to the decoding parameter acquisition request and feeds back the memory utilization rate and the processor occupancy rate to the current device.
Step S302, determining the encryption algorithm grade of the video stream according to the processor occupancy rate, and determining the frame image similarity encryption parameter according to the memory utilization rate.
Step S303, encrypting the image in the video stream data according to the encryption algorithm level determined by the decoding parameter information and the frame image similarity encryption parameter determined by the memory usage rate, and transmitting the encrypted data to the peer device.
In one embodiment, the encrypting the image in the video stream data according to the encryption algorithm level determined by the decoding parameter information and the frame image similarity encryption parameter determined by the memory usage rate includes: dividing an independent encryption block and a dependent encryption block of the image according to the frame image similarity encryption parameter to obtain an independent encryption block image and a combined encryption block image, wherein the size of the combined encryption block image is larger than that of the independent encryption block image; and encrypting the independent encryption block image and the combined encryption block image respectively by using the determined encryption algorithm. Therefore, the number of different encryption blocks is controlled through different memory utilization rates, so that the device can adapt to the resolving power of the opposite-end device for flexible and efficient processing when the opposite-end device decrypts.
According to the above, by acquiring the decoding parameter information of the opposite terminal device, the decoding parameter information includes the processor parameter and the memory usage rate; determining the encryption algorithm grade of the video stream and frame image similarity encryption parameters according to the decoding parameter information, wherein the number of independent encryption blocks of different images corresponding to different frame image similarity encryption parameters is in proportion; and encrypting video stream data based on the encryption algorithm grade and the frame image similarity encryption parameter, and transmitting the encrypted data to the opposite terminal equipment. The scheme solves the problem that more computing power and hardware resources are required to be consumed in the existing video stream data encryption process, and has the advantages of maximally relieving computing power, improving transmission processing speed and having stronger flexibility and applicability on the basis of ensuring the safety of data information.
Fig. 4 is a block diagram of a structure of a device decoding capability-based differential video encryption security chip device according to an embodiment of the present invention, where the security chip device is configured to execute the device decoding capability-based differential video encryption method provided in the data receiving end embodiment, and has functional modules and beneficial effects corresponding to the execution method. As shown in fig. 4, the security chip device specifically includes: an information acquisition module 101, a parameter determination module 102, and an encryption module 103, wherein,
an information obtaining module 101, configured to obtain decoding parameter information of an opposite-end device, where the decoding parameter information includes a processor parameter and a memory usage rate;
a parameter determining module 102, configured to determine, according to the decoding parameter information, an encryption algorithm level of a video stream and a frame image similarity encryption parameter, where different frame image similarity encryption parameters correspond to different numbers of independent encryption blocks of an image;
and the encryption module 103 is configured to encrypt video stream data based on the encryption algorithm level and the frame image similarity encryption parameter, and transmit the encrypted data to the peer device.
According to the scheme, decoding parameter information of opposite-end equipment is obtained, wherein the decoding parameter information comprises processor parameters and memory utilization rate; determining the encryption algorithm grade of the video stream and a frame image similarity encryption parameter according to the decoding parameter information, wherein different frame image similarity encryption parameters correspond to the number of independent encryption blocks of different images in proportion; and encrypting video stream data based on the encryption algorithm grade and the frame image similarity encryption parameter, and transmitting the encrypted data to the opposite terminal equipment. The scheme solves the problem that more computing power and hardware resources are required to be consumed in the existing video stream data encryption process, and has the advantages of maximally relieving computing power, improving transmission processing speed and having stronger flexibility and applicability on the basis of ensuring the safety of data information. Correspondingly, the functions executed by the modules are respectively as follows:
in a possible embodiment, the obtaining decoding parameter information of the peer device includes:
the current equipment sends a decoding parameter acquisition request to opposite-end equipment at intervals of preset time;
and the opposite-end equipment calculates the memory utilization rate and the processor occupancy rate in a preset time period according to the decoding parameter acquisition request, and feeds back the memory utilization rate and the processor occupancy rate to the current equipment.
In one possible embodiment, the determining the encryption algorithm level of the video stream and the frame image similarity encryption parameter according to the decoding parameter information includes:
determining the encryption algorithm grade of the video stream according to the processor occupancy rate;
and determining a frame image similarity encryption parameter according to the memory utilization rate.
In one possible embodiment, the determining the encryption algorithm level of the video stream according to the processor occupancy includes:
determining a falling preset occupancy rate interval according to the processor occupancy rate;
and determining a corresponding preset encryption algorithm grade according to the preset occupancy rate interval, wherein the higher the occupancy rate of the processor corresponding to the preset occupancy rate interval is, the lower the corresponding encryption algorithm grade is.
In a possible embodiment, the determining a frame image similarity encryption parameter according to the memory usage rate includes:
determining the number proportion of independent encryption blocks of the image according to the memory utilization rate;
and determining the similarity coefficient of the image block based on the number ratio of the independent encryption blocks so as to be used for dividing the image independent encryption blocks and the non-independent encryption blocks.
In one possible embodiment, the encrypting the video stream data based on the encryption algorithm level and the frame image similarity encryption parameter includes:
and encrypting the image in the video stream data according to the encryption algorithm grade determined by the decoding parameter information and the frame image similarity encryption parameter determined by the memory utilization rate.
In a possible embodiment, the encrypting an image in video stream data according to the encryption algorithm level determined by the decoding parameter information and the frame image similarity encryption parameter determined by the memory usage rate includes:
dividing an independent encryption block and a dependent encryption block of the image according to the frame image similarity encryption parameter to obtain an independent encryption block image and a combined encryption block image, wherein the size of the combined encryption block image is larger than that of the independent encryption block image;
and encrypting the independent encryption block image and the combined encryption block image respectively by using the determined encryption algorithm.
Fig. 5 is a schematic structural diagram of an apparatus for differential video encryption based on decoding capability according to an embodiment of the present invention, as shown in fig. 5, the apparatus includes a processor 201, a memory 202, an input device 203, and an output device 204; the number of the processors 201 in the device may be one or more, and one processor 201 is taken as an example in fig. 5; the processor 201, the memory 202, the input device 203 and the output device 204 in the apparatus may be connected by a bus or other means, and fig. 5 illustrates the connection by a bus as an example. The memory 202 is a computer-readable storage medium, and can be used for storing software programs, computer-executable programs, and modules, such as program instructions/modules corresponding to the differential video encryption method based on the device decoding capability in the embodiment of the present invention. The processor 201 executes software programs, instructions and modules stored in the memory 202 to execute various functional applications and data processing of the device, that is, to implement the differential video encryption method based on the device decoding capability. The input device 203 may be used to receive input numeric or character information and generate key signal inputs relating to user settings and function controls of the apparatus. The output device 204 may include a display device such as a display screen.
Embodiments of the present invention also provide a storage medium containing computer-executable instructions, which when executed by a computer processor, perform a method for differential video encryption based on device decoding capability, the method comprising:
acquiring decoding parameter information of opposite-end equipment, wherein the decoding parameter information comprises processor parameters and memory utilization rate;
determining the encryption algorithm grade of the video stream and frame image similarity encryption parameters according to the decoding parameter information, wherein the number of independent encryption blocks of different images corresponding to different frame image similarity encryption parameters is in proportion;
and encrypting video stream data based on the encryption algorithm grade and the frame image similarity encryption parameter, and transmitting the encrypted data to the opposite terminal equipment.
From the above description of the embodiments, it is obvious for those skilled in the art that the embodiments of the present invention can be implemented by software and necessary general hardware, and certainly can be implemented by hardware, but the former is a better implementation in many cases. Based on such understanding, the technical solutions of the embodiments of the present invention or portions thereof contributing to the prior art may be embodied in the form of a software product, which may be stored in a computer-readable storage medium, such as a floppy disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a FLASH Memory (FLASH), a hard disk or an optical disk of a computer, and includes several instructions for enabling a computer device (which may be a personal computer, a service, or a network device) to execute the methods described in the embodiments of the present invention.
It should be noted that, in the embodiment of the differential video encryption security chip apparatus based on device decoding capability, each unit and each module included in the embodiment are only divided according to functional logic, but are not limited to the above division, as long as corresponding functions can be implemented; in addition, specific names of the functional units are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the embodiment of the present invention.
In some possible embodiments, the various aspects of the method provided by the present application may also be implemented in the form of a program product, which includes program code for causing a computer device to perform the steps of the method according to the various exemplary embodiments of the present application described above in this specification when the program product runs on the computer device, for example, the computer device may perform the differential video encryption method based on device decoding capability described in the embodiments of the present application. The program product may be implemented using any combination of one or more readable media.
It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles applied. Those skilled in the art will appreciate that the embodiments of the present invention are not limited to the specific embodiments described herein, and that various obvious changes, adaptations, and substitutions are possible, without departing from the scope of the embodiments of the present invention. Therefore, although the embodiments of the present invention have been described in more detail through the above embodiments, the embodiments of the present invention are not limited to the above embodiments, and many other equivalent embodiments can be included without departing from the concept of the embodiments of the present invention, and the scope of the embodiments of the present invention is determined by the scope of the appended claims.
Claims (9)
1. A differential video encryption method based on device decoding capability is characterized by comprising the following steps:
acquiring decoding parameter information of opposite-end equipment, wherein the decoding parameter information comprises processor parameters and memory utilization rate;
determining the encryption algorithm grade of the video stream and frame image similarity encryption parameters according to the decoding parameter information, wherein the number of independent encryption blocks of different images corresponding to different frame image similarity encryption parameters is in proportion;
and encrypting video stream data based on the encryption algorithm grade and the frame image similarity encryption parameter, and transmitting the encrypted data to the opposite terminal equipment.
2. The differential video encryption method based on device decoding capability according to claim 1, wherein the obtaining of the decoding parameter information of the peer device includes:
the current equipment sends a decoding parameter acquisition request to opposite-end equipment at intervals of preset time;
and the opposite-end equipment calculates the memory utilization rate and the processor occupancy rate in a preset time period according to the decoding parameter acquisition request, and feeds back the memory utilization rate and the processor occupancy rate to the current equipment.
3. The apparatus decoding capability-based differential video encryption method of claim 2, wherein the determining the encryption algorithm level of the video stream and the frame picture similarity encryption parameter according to the decoding parameter information comprises:
determining the encryption algorithm grade of the video stream according to the processor occupancy rate;
and determining a frame image similarity encryption parameter according to the memory utilization rate.
4. The differential video encryption method based on device decoding capability according to claim 3, wherein the determining the encryption algorithm level of the video stream according to the processor occupancy rate comprises:
determining a falling preset occupancy rate interval according to the processor occupancy rate;
and determining a corresponding preset encryption algorithm grade according to the preset occupancy rate interval, wherein the higher the occupancy rate of the processor corresponding to the preset occupancy rate interval is, the lower the corresponding encryption algorithm grade is.
5. The apparatus decoding capability-based difference video encryption method of claim 3, wherein determining the frame picture similarity encryption parameter based on the memory usage rate comprises:
determining the number proportion of independent encryption blocks of the image according to the memory utilization rate;
and determining the similarity coefficient of the image block based on the number ratio of the independent encryption blocks so as to divide the image independent encryption blocks and the dependent encryption blocks.
6. The differential video encryption method based on device decoding capability according to claim 3, wherein the encrypting the video stream data based on the encryption algorithm level and the frame image similarity encryption parameter comprises:
and encrypting the image in the video stream data according to the encryption algorithm grade determined by the decoding parameter information and the frame image similarity encryption parameter determined by the memory utilization rate.
7. A difference video encryption security chip device based on equipment decoding capability is characterized by comprising:
the information acquisition module is configured to acquire decoding parameter information of opposite-end equipment, wherein the decoding parameter information comprises processor parameters and memory utilization rate;
the parameter determining module is configured to determine an encryption algorithm grade of a video stream and a frame image similarity encryption parameter according to the decoding parameter information, wherein the number of independent encryption blocks of different images corresponding to different frame image similarity encryption parameters is in proportion;
and the encryption module is configured to encrypt video stream data based on the encryption algorithm grade and the frame image similarity encryption parameter, and transmit the encrypted data to the opposite terminal equipment.
8. A differential video encryption device based on device decoding capabilities, the device comprising: one or more processors; memory to store one or more programs that, when executed by the one or more processors, cause the one or more processors to implement the device decoding capability based differential video encryption method of any of claims 1-6.
9. A storage medium containing computer executable instructions for performing the device decoding capability based differential video encryption method of any one of claims 1-6 when executed by a computer processor.
Priority Applications (1)
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| JPH11161162A (en) * | 1997-11-27 | 1999-06-18 | Hitachi Ltd | Ciphering method or deciphering method, and device using the method |
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| JP2003152703A (en) * | 2001-11-12 | 2003-05-23 | Victor Co Of Japan Ltd | Encryption device, encryption method, decryption device, decryption method, encryption decryption device and encryption decryption method |
| US20040193871A1 (en) * | 2003-03-28 | 2004-09-30 | Broadcom Corporation | System and method for transmitting data using selective partial encryption |
| JP2006094241A (en) * | 2004-09-24 | 2006-04-06 | Fuji Xerox Co Ltd | Encryption apparatus, encryption processing method, program, and information protecting system using encryption apparatus |
| CN100574445C (en) * | 2006-09-29 | 2009-12-23 | 清华大学深圳研究生院 | Based on the quality controllable encryption method of video stream of coding standard H.264 |
| US9094733B2 (en) * | 2012-03-31 | 2015-07-28 | Intel Corporation | Methods and systems for cryptographic access control of video |
| CN105376051A (en) * | 2014-08-29 | 2016-03-02 | 宇龙计算机通信科技(深圳)有限公司 | Encryption method and apparatus, and terminal |
| KR20170032776A (en) * | 2015-09-15 | 2017-03-23 | 삼성전자주식회사 | Image Processing Device and Image Processing Method Performing Selective Image Encryption |
| US9794061B1 (en) * | 2016-06-14 | 2017-10-17 | Storagecraft Technology Corporation | Consolidating encrypted image backups without decryption |
| CN106534124A (en) * | 2016-11-15 | 2017-03-22 | 浙江丞易软件开发有限公司 | Integration encrypted storage tamper-proofing method and system |
| CN107302706B (en) * | 2017-06-21 | 2020-08-14 | 北京奇艺世纪科技有限公司 | Image anti-hotlinking method and device and electronic equipment |
| CN110430446B (en) * | 2019-07-26 | 2021-09-14 | 东软集团股份有限公司 | Video processing method, device, equipment and computer readable storage medium |
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| CN111414635A (en) * | 2020-03-20 | 2020-07-14 | 广州市百果园信息技术有限公司 | File encryption and decryption method, device, equipment and storage medium |
| CN111371813B (en) * | 2020-05-28 | 2020-10-02 | 杭州灿八科技有限公司 | Big data network data protection method and system based on edge calculation |
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