CN113434561A - Live broadcast data verification method and system, electronic device and storage medium - Google Patents
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Abstract
The application relates to a live data verification method, a live data verification system, electronic equipment and a storage medium. The method comprises the following steps: determining original live broadcast data needing to be sent to a terminal; selecting a target data segment from a plurality of data segments of original live data; processing the target data fragment according to a preset scheme to obtain a first check code; the method comprises the steps of sending data positions of original live broadcast data and target data segments in the original live broadcast data and a first check code to a terminal, wherein the terminal is used for determining a second check code of data located at the data positions in received live broadcast data to be checked according to a preset scheme, and checking the live broadcast data to be checked by comparing the first check code with the second check code. The method in the application overcomes the problems that excessive computing performance is consumed and excessive load capacity is occupied when the check code is computed in the related art.
Description
Technical Field
The present application relates to the field of internet technologies, and in particular, to a live data verification method and system, an electronic device, and a storage medium.
Background
With the development of internet technology, the development of live broadcast services is more and more vigorous, and more users watch the live broadcast game, live broadcast shopping and the like through a live broadcast room.
In the existing live broadcast, in order to prevent the live broadcast data from being hijacked or tampered by an illegal person, the server may calculate a Cyclic Redundancy Check (CRC) value, for example, a CRC16 value, on the live broadcast slice data, and the client may Check the live broadcast slice data according to the CRC16 value to prevent data abnormality.
In the related art, the calculation of the CRC16 value for the whole live slice data occupies a large amount of server performance, and thus, the load capacity of the server is reduced.
From the above, the live data verification method in the related art has the technical problem of occupying a large amount of server performance.
Disclosure of Invention
In order to solve the technical problem that a live data verification method in the related art occupies a large amount of server performance, the application provides a live data verification method, a live data verification system, electronic equipment and a storage medium.
In a first aspect, an embodiment of the present application provides a live data verification method, including:
determining original live broadcast data needing to be sent to a terminal;
selecting a target data segment from a plurality of data segments of the original live data;
processing the target data fragment according to a preset scheme to obtain a first check code;
and sending the original live broadcast data, the data position of the target data segment in the original live broadcast data and the first check code to the terminal, wherein the terminal is used for determining a second check code of the data positioned at the data position in the received live broadcast data to be checked according to the preset scheme, and checking the live broadcast data to be checked by comparing the first check code with the second check code.
Optionally, as in the foregoing method, the selecting a target data segment from a plurality of data segments of the original live data includes:
when the data volume of the original live broadcast data is larger than or equal to a preset data volume, dividing the original live broadcast data according to a target data dividing scheme to obtain at least two target segmented data;
according to a target selection scheme, at least one target data fragment is randomly selected from a plurality of data fragments of each target segment data, and the data position of each target data fragment in the original live data is determined.
Optionally, as in the foregoing method, the dividing the original live data according to a target data dividing scheme to obtain at least two target segment data includes:
determining the amount of segmented data in the target data partitioning scheme, wherein the amount of segmented data is used for indicating the amount of data of each segmented data obtained by partitioning;
and dividing the original live broadcast data according to the segment data volume to obtain at least two target segment data.
Optionally, as in the foregoing method, before randomly selecting at least one target data segment from a plurality of data segments of each target segment data according to a target selection scheme, the method further includes:
determining a target security level of the original live data;
and selecting the target selection scheme corresponding to the target security level from all candidate selection schemes, wherein the candidate selection schemes corresponding to different security levels indicate that the number of the selected data fragments in each segmented data is different.
In a second aspect, an embodiment of the present application provides a live data verification method, including:
the method comprises the steps of obtaining live broadcast data to be checked from a server, data position information and a first check code, wherein the first check code is obtained by calculating a first data fragment located at a data position in original live broadcast data by the server according to a preset scheme;
selecting a second data segment to be verified from the live data to be verified according to the data position;
calculating the second data fragment according to the preset scheme to obtain a second check code;
and comparing the first check code with the second check code to obtain the consistency relation between the live data to be checked and the original live data.
Optionally, as in the foregoing method, the method includes at least two data positions, and the selecting, according to the data positions, a second data segment that needs to be checked from the live data to be checked includes:
and selecting the second data segment corresponding to each data position in the live data to be verified according to each data position.
Optionally, as in the foregoing method, the obtaining the consistency relationship between the live data to be checked and the original live data by comparing the first check code with the second check code includes:
obtaining a comparison result by comparing the first check code with the second check code;
when the comparison result indicates that the first check code is consistent with the second check code, obtaining the consistency relation used for indicating that the live data to be checked is consistent with the original live data;
and when the comparison result indicates that the first check code is inconsistent with the second check code, obtaining the consistency relation for indicating that the live data to be checked is inconsistent with the original live data.
In a third aspect, an embodiment of the present application provides a server for checking live data, including:
the determining module is used for determining original live broadcast data needing to be sent to the terminal;
the selection module is used for selecting a target data segment from a plurality of data segments of the original live broadcast data;
the calculation module is used for processing the target data fragment according to a preset scheme to obtain a first check code;
the sending module is used for sending the original live broadcast data, the data position of the target data fragment in the original live broadcast data and the first check code to the terminal, wherein the terminal is used for determining a second check code of data positioned at the data position in the received live broadcast data to be checked according to the preset scheme, and checking the live broadcast data to be checked by comparing the first check code with the second check code.
In a fourth aspect, an embodiment of the present application provides a terminal for checking live data, including:
the system comprises an acquisition module, a verification module and a verification module, wherein the acquisition module is used for acquiring live broadcast data to be verified, data position information and a first verification code from a server, and the first verification code is obtained by calculating a first data fragment positioned at a data position in original live broadcast data by the server according to a preset scheme;
the selection module is used for selecting a second data segment needing to be verified in the live data to be verified according to the data position;
the calculation module is used for calculating the second data segment according to the preset scheme to obtain a second check code;
and the comparison module is used for comparing the first check code with the second check code to obtain the consistency relationship between the live data to be checked and the original live data.
In a fifth aspect, an embodiment of the present application provides a live data verification system, which includes the server and the terminal.
In a sixth aspect, an embodiment of the present application provides an electronic device, including: the system comprises a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory are communicated with each other through the communication bus;
the memory is used for storing a computer program;
the processor, when executing the computer program, is configured to implement the method according to any of the preceding claims.
In a seventh aspect, an embodiment of the present application provides a computer-readable storage medium, where the storage medium includes a stored program, where the program is executed to perform the method according to any one of the preceding claims.
Compared with the prior art, the technical scheme provided by the embodiment of the application has the following advantages:
according to the method provided by the embodiment of the application, the first check code for checking the received live broadcast data to be checked by the terminal can be obtained only by calculating part of data in the original live broadcast data according to the preset scheme, and compared with the method for calculating the whole original live broadcast data to obtain the check code in the related art, the method effectively solves the problems that excessive calculation performance is consumed and excessive load capacity is occupied when the check code is calculated in the related art.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.
Fig. 1 is a flowchart of a live data verification method according to an embodiment of the present application;
fig. 2 is a flowchart of a live data verification method according to another embodiment of the present application;
FIG. 3 is a schematic diagram of a target data segment selection provided in an application example of the present application;
fig. 4 is a flowchart of a live data verification method according to another embodiment of the present application;
fig. 5 is a block diagram of a server for verifying live data according to an embodiment of the present application;
fig. 6 is a block diagram of a terminal for verifying live data according to an embodiment of the present application;
fig. 7 is a block diagram of a system for live data verification according to an embodiment of the present application;
fig. 8 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. 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 application.
According to one aspect of the embodiment of the application, live data verification is provided. Optionally, in this embodiment, the live data verification method may be applied to a hardware environment formed by a terminal and a server. The server is connected with the terminal through a network, can be used for providing services (such as live data transmission and the like) for the terminal or a client installed on the terminal, and can be provided with a database on the server or independently of the server for providing data storage services for the server.
The network may include, but is not limited to, at least one of: wired networks, wireless networks. The wired network may include, but is not limited to, at least one of: wide area networks, metropolitan area networks, local area networks, which may include, but are not limited to, at least one of the following: WIFI (Wireless Fidelity), bluetooth. The terminal may not be limited to a PC, a mobile phone, a tablet computer, and the like.
The live data verification method in the embodiment of the application can be executed by the server, the terminal, or both the server and the terminal. The terminal may also execute the live data verification method of the embodiment of the present application by a client installed thereon.
Taking the server to execute the live data verification method in this embodiment as an example, fig. 1 is a live data verification method provided in this embodiment, and is applied to a server side, and includes the following steps:
step S101, determining original live broadcast data needing to be sent to a terminal.
The live data verification method in this embodiment may be applied to a scene in which it is necessary to determine whether live data received by the terminal is consistent with original live data, for example: the scene that whether the video live broadcast data (such as live broadcast games, live broadcast shopping and the like) received by the terminal is tampered is judged, and the scene that whether the audio live broadcast data received by the terminal is tampered can be judged, and other scenes can also be adopted. In the embodiment of the application, the live data verification method is described by taking a scene for judging whether video live data received by a terminal is tampered as an example, and the live data verification method is also applicable to other types of live data under the condition of no contradiction.
Taking a scene of judging whether video live broadcast data received by a terminal is tampered as an example, by obtaining a first check code corresponding to original live broadcast data, the terminal identifies the live broadcast data to be checked according to the first check code, so as to determine whether the live broadcast data to be checked is consistent with the original live broadcast data.
After the server side records the original live broadcast data in real time or receives the live broadcast data uploaded by the uploading side, the server side can acquire the original live broadcast data (for example, live broadcast P2P slice data) for sending to each terminal. And moreover, a terminal subscribing the live broadcast data or a terminal accessing the live broadcast room can be determined at the server, so that the original live broadcast data can be accurately sent to the terminal.
Step S102, selecting a target data segment from a plurality of data segments of original live broadcast data.
After the original live data is determined, all data segments constituting the original live data can be determined. For example, when the original live data includes a plurality of bytes of data, the original live data may be regarded as data of one data segment according to a preset number of bytes (e.g., one byte or two bytes, etc.), and may be regarded as data composed of a plurality of consecutive data segments.
After all data segments of the original live data are determined, a target data segment can be selected from all the data segments.
The target data segment may be the data segment selected for calculating the check code among all the data segments.
For example, after all data segments of the original live data are determined, a target data segment may be selected at regular intervals (e.g., every five data segments); or determining the number A of the required target data segments, and then randomly selecting the target data segments from all the data segments according to the number A; the number B of the required target data segments may be randomly determined, and then the target data segments are randomly selected from all the data segments according to the number B.
And step S103, processing the target data segment according to a preset scheme to obtain a first check code.
After the target data segment is determined, in order to facilitate the terminal to verify the live data to be verified and prevent illegal personnel from obtaining the data for verification, the tampered live data comprises the tampered data segment which is consistent with the target data segment, and therefore the target data segment is processed to obtain a first verification code for verification.
The preset scheme may be a scheme for performing an operation on the data to be processed to obtain a check code corresponding to the data to be processed. For example, in the preset scheme, after connecting each target data segment according to the position of each target data segment in the original live data, calculating to obtain a first check code; or, after connecting the target data segments according to the time sequence selected by the target data segments, calculating to obtain the first check code.
For example, the preset scheme may be a CRC16 algorithm, after each target data segment is obtained, each target data segment may be connected to form a connected data, and then check value calculation is performed on the connected data through a CRC16 algorithm, and the obtained CRC16 check value is used as the first check code.
And step S104, sending the original live broadcast data, the data position of the target data segment in the original live broadcast data and the first check code to the terminal, wherein the terminal is used for determining a second check code of the data positioned at the data position in the received live broadcast data to be checked according to a preset scheme, and checking the live broadcast data to be checked by comparing the first check code with the second check code.
After the original live broadcast data and the target data segment are obtained, the data position of the target data segment in the original live broadcast data can be determined, in addition, the data position in the original live broadcast data can be determined, and then the target data segment is determined in the original live broadcast data according to the data position; alternatively, the data position may be information indicating a position of the target data segment relative to other data in the original live data, for example, when the original live data includes 1000 bytes of data in total and each data segment has 1 byte, 0 to 999 data can be used as the data position of one of the data segments, and when the data position of the target data segment is 100, it indicates that the target data segment corresponds to 101 th byte of data in the original live data.
After the first check code corresponding to the target data segment is obtained, the data which can be used by the terminal to check the live data to be checked is obtained.
The server can send the original live broadcast data, the data position and the first check code to the terminal through data communication with the terminal. After the terminal receives the data, in order to obtain the same check code according to the same data, the terminal needs to calculate the data located at the data position in the received live data to be checked according to a preset scheme which is the same as that of the first check code, obtain a second check code, and finally check the live data to be checked by comparing the first check code with the second check code; and when the first check code is consistent with the second check code, judging that the live data to be checked is consistent with the original live data, and when the first check code is inconsistent with the second check code, judging that the live data to be checked is tampered live data.
According to the method in the embodiment, the first check code for checking the received live broadcast data to be checked by the terminal can be obtained only by calculating part of data in the original live broadcast data according to the preset scheme, and compared with the method for calculating the whole original live broadcast data to obtain the check code in the related technology, the method effectively solves the problems that excessive calculation performance is consumed and excessive load capacity is occupied when the check code is calculated in the related technology.
As an alternative implementation, as shown in fig. 2, the step S102 of selecting a target data segment from a plurality of data segments of original live data according to the foregoing method includes the following steps:
step S201, when the data volume of the original live broadcast data is larger than or equal to the preset data volume, the original live broadcast data is divided according to a target data division scheme to obtain at least two target segment data.
After the original live data is acquired, since the original live data is data in a chain, the original live data can be segmented so as to select a target data segment from each segmented target data.
The preset data volume may be preset and used for determining the data volume of the original live data that needs to be divided.
The target data partitioning scheme may be a preset scheme for partitioning the original live data, and the target data partitioning scheme may include, but is not limited to: the number of segments to be divided, the number of bytes of each segment of data, and the like, and generally, the preset data amount is larger than the number of bytes of each segment of data defined in the target division scheme.
The target data partitioning scheme may include a plurality of target data partitioning schemes, and before this step S201, the target data partitioning scheme may be selected from a plurality of candidate data partitioning schemes, or the target data partitioning scheme may be configured before this step.
After the target data partitioning scheme is obtained, the original live broadcast data can be partitioned according to the target data partitioning scheme to obtain at least two target segment data.
For example, when the data amount of the original live data is 2000 bytes and the target data division scheme is to divide every 500 bytes, according to the target data division scheme, target segment data a (corresponding to data of 1 st to 500 th bytes), target segment data b (corresponding to data of 501 th to 1000 th bytes), target segment data c (corresponding to data of 1001 st to 1500 th bytes), and target segment data d (corresponding to data of 1501 th to 2000 th bytes) can be obtained by division.
Step S202, according to a target selection scheme, at least one target data segment is randomly selected from a plurality of data segments of each target segment data, and the data position of each target data segment in the original live data is determined.
After the target segmented data is obtained, one or more target data fragments may be respectively selected in each target data. Optionally, the data size of each data segment is a target data size.
The target selection scheme may be a scheme for determining the number of target data pieces that need to be selected from each target segment data, and alternatively, the target selection scheme may indicate that the same number of target data pieces are selected from each target segment data, or may indicate that different numbers of target data pieces are selected from each target segment data.
The target data segment may be a data segment selected from a plurality of data segments of each target segment data according to a target selection scheme, and used for performing the first check code calculation.
When the target data segment in each target segment data is determined according to the target selection scheme, the data position of each target data segment in the original live data can be determined. Optionally, the data position may be characterized by positions in all data of the original live data, for example, when the original live data C includes 1000 bytes of data in total, and each data segment is 1 byte (that is, the target data amount is 1 byte), then the data position of one of the data segments may be taken as 0 to 1999, and when the data position of the target data segment d1 is 100, then the target data segment corresponds to the 100 th data segment in the original live data; it may also be that the target data segment is characterized by a position in each target segment data, for example, when each target segment data is 500 bytes (i.e., includes 500 data segments), the original live data C is sequentially divided into 2 target segment data of the target segment data C1 (corresponding to 1 st to 500 th bytes of data) and the target segment data C2 (corresponding to 501 st to 1000 th bytes of data), and when a target data segment d2 corresponds to 601 th bytes of data and 602 th bytes of data in the original live data, the data position of the target data segment d2 may be (C2,100) to characterize the target data segment d2 as the 100 th data segment among all data segments of the target segment data C2, which is equivalent to the 600 th data segment among all data segments of the original live data.
As one application example, when the target data division scheme is to divide by every 500 bytes, and the target selection scheme is to randomly select two target data fragments with a data size of 1 byte in each target segment data F (F1, F2, F3, F4 … …) of the original live data F, one of the methods for randomly selecting the target data fragments is shown in fig. 3.
According to the method in the embodiment, original live broadcast data is divided to obtain at least two target segment data, then at least one target data segment is obtained from each target segment data, and further at least one target data segment can be obtained from each target segment data to ensure the uniformity of the distribution of the target data segments in the whole original live broadcast data.
As an optional implementation manner, as in the foregoing method, the step S201 of dividing the original live data according to the target data dividing scheme to obtain at least two target segment data includes the following steps:
step S301, determining the amount of segment data in the target data partitioning scheme, wherein the amount of segment data is used to indicate the data amount of each segment data obtained by partitioning.
When the target data partitioning scheme includes the data size of each segmented data obtained by partitioning, that is, the segmented data size, after the target data partitioning scheme is determined, the segmented data size in the target data partitioning scheme can be determined.
Step S302, the original live broadcast data is divided according to the segment data quantity to obtain at least two target segment data.
After the data volume of the segments is determined, the dividing standard of the data volume when the original live data is divided can be determined.
When the segment data amount is 500 bytes, the original live data can be divided by taking the first data of the original live data as a starting point and taking every 500 bytes as a step, and when the last remaining data which is not divided in the original live data is smaller than the segment data amount, the remaining data is not divided any more and is directly taken as target segment data.
For example, when the original live data F is 1900 bytes and the amount of segment data is 500 bytes, four target segment data, i.e., target segment data F1 (data of 1 st byte to 500 th byte), target segment data F2 (data of 501 st byte to 1000 th byte), target segment data F3 (data of 1001 st byte to 1500 th byte), and target segment data F4 (data of 1501 th byte to 1900 th byte), can be obtained by division.
By the method in the embodiment, the original live data can be quickly divided based on the segment data volume in the target data dividing scheme, so that a plurality of target segment data are obtained.
As an alternative implementation manner, as the foregoing method, before said step S202 randomly selects at least one target data segment from a plurality of data segments of each target segment data according to the target selection scheme, the method further includes the following steps:
step S401, determining the target security level of the original live broadcast data.
Before the original live broadcast data is acquired, live broadcast content information (for example, enterprise conference live broadcast, live broadcast shopping, live broadcast games, and the like) provided by a live broadcast party can be acquired in advance, different live broadcast content information can correspond to different security levels, and when the security level is higher, the live broadcast data needs to be encrypted at a higher level, so that the difficulty of tampering by illegal personnel and the consumed time are improved.
The target security level may be a security level corresponding to the original live data among all security levels.
For example, the security levels may be classified from high to low into security level I, security level II, security level III; presetting the security level I corresponding to the live conference of the enterprise, the security level II corresponding to the live shopping and the security level III corresponding to the live game; when the live broadcast content information corresponding to the original live broadcast data is acquired and is live broadcast of an enterprise conference, the target security level corresponding to the original live broadcast data can be acquired according to the live broadcast matching of the enterprise conference and is the security level I.
Step S402, selecting and obtaining target selection schemes corresponding to the target security levels from all the candidate selection schemes, wherein the number of the data fragments selected from each segmented data is different and indicated by the candidate selection schemes corresponding to different security levels.
In advance, a corresponding candidate selection scheme may be set for each security level, and a correspondence between the two may be stored in the server, where the candidate selection scheme is used to indicate the number of data fragments that need to be selected in each segmented data, and generally, the higher the security level corresponding to the candidate selection scheme is, the greater the number of data fragments that the candidate selection scheme selects in each segmented data is.
For example, when the security level I corresponds to the candidate selection scenario P1, the security level II corresponds to the candidate selection scenario P2, and the security level III corresponds to the candidate selection scenario P3, and the target security level is the security level I, the target selection scenario corresponding to the target security level obtained by matching is the candidate selection scenario P1.
By the method in the embodiment, different modes can be adopted for different live broadcast data to obtain the target data segment for calculating the first check code, so that the complexity of the first check code is improved, and the safety is improved.
As shown in fig. 4, according to an embodiment of another aspect of the present application, there is further provided a live data verification method applied to a terminal side, including the following steps:
and P101, acquiring live broadcast data to be checked from the server, data position information and a first check code, wherein the first check code is obtained by calculating a first data segment located at a data position in original live broadcast data by the server according to a preset scheme.
After the server terminal records in real time to obtain the original live broadcast data or receives the live broadcast data uploaded by the uploading terminal, the server terminal can obtain the original live broadcast data for sending to each terminal. And moreover, a terminal subscribing the live broadcast data can be determined at the server side, so that the original live broadcast data can be accurately sent to the terminal.
After the server determines the original live broadcast data, all data segments forming the original live broadcast data can be determined. For example, when the original live data includes a plurality of bytes of data, the original live data may be regarded as data of one data segment according to a preset number of bytes (e.g., one byte or two bytes, etc.), and may be regarded as data composed of a plurality of consecutive data segments. After all data segments of the original live data are determined, a target data segment can be selected from all the data segments.
The target data segment may be the data segment selected by the server for calculating the check code among all the data segments.
After the target data segment is determined, the server is used for facilitating the terminal to verify the live data to be verified and preventing illegal personnel from obtaining the data for verification, so that the tampered live data comprises the tampered data segment which is consistent with the target data segment, and therefore the target data segment is processed to obtain a first verification code for verification.
The preset scheme may be a scheme for performing an operation on the data to be processed to obtain a check code corresponding to the data to be processed. For example, in the preset scheme, after connecting each target data segment according to the position of each target data segment in the original live data, calculating to obtain a first check code; or, after connecting the target data segments according to the time sequence selected by the target data segments, calculating to obtain the first check code.
For example, the preset scheme may be a CRC16 algorithm, after each target data segment is obtained, each target data segment may be connected to form a connected data, and then check value calculation is performed on the connected data through a CRC16 algorithm, and the obtained CRC16 check value is used as the first check code.
After the server acquires the original live data and the target data segment, the data position of the target data segment in the original live data can be determined. And after the first check code corresponding to the target data segment is obtained, the data which can be used by the terminal to check the live data to be checked is obtained.
The terminal can acquire original live broadcast data, a data position and a first check code from the server through data communication with the server.
And P102, selecting a second data segment needing to be checked from the live data to be checked according to the data position.
The data position is the position of the first data segment in the original live broadcast data, and generally, the calibration mode of the terminal and the server terminal for the position of the data segment is the same, so that if the live broadcast data to be verified is the same as the original live broadcast data, a second data segment which is consistent with the first data segment can be selected from the live broadcast data to be verified according to the data position.
When the authenticity of the live data to be verified is verified, only the consistency between the second data segment and the first data segment needs to be verified, and the consistency between the second data segment and the first data segment is used as a basis for judging whether the live data to be verified is consistent with the original live data.
And P103, calculating the second data segment according to a preset scheme to obtain a second check code.
After the second data segment is determined, because the first check code is obtained by calculating the first data segment through a preset scheme, if the comparison with the first check code is needed, whether the live data to be checked is consistent with the original live data is judged, the second data segment needs to be calculated according to the preset scheme, and the second check code is obtained.
Under a general condition, data consistency verification can be carried out based on the check codes only by ensuring that the scheme of calculating the first check codes by the server side is consistent with the scheme of calculating the second check codes by the terminal.
For example, when the server side adopts the CRC16 algorithm, the terminal also needs to adopt the CRC16 algorithm, after each second data segment is acquired, each second data segment may be directly connected into one data, or after a specific character (e.g., ",") is added between each second data segment, the second data segment is connected into one data, then the CRC16 algorithm is used to perform check value calculation on the connected data, and the obtained CRC16 check value is used as the second check code.
And step P104, comparing the first check code with the second check code to obtain a consistency relation between the live data to be checked and the original live data.
After the first check code and the second check code are obtained, the consistency relation between the live data to be checked and the original live data can be obtained by comparing whether the first check code and the second check code are consistent or not.
And when the first check code is consistent with the second check code, judging that the live data to be checked is consistent with the original live data.
And when the first check code is inconsistent with the second check code, judging that the live data to be checked is inconsistent with the original live data.
According to the method in the embodiment, the client side only needs to calculate part of data in the original live broadcast data according to a preset scheme, so that a second check code for checking the received live broadcast data to be checked can be obtained, and the consistency relation between the live broadcast data to be checked and the original live broadcast data can be obtained based on the comparison result between the received first check code and the received second check code; compared with the method for obtaining the check code by calculating the whole live broadcast data to be checked in the related technology, the method effectively solves the problems that excessive calculation performance is consumed and excessive load capacity is occupied in the related technology.
As an optional implementation manner, the method includes at least two data positions, and the step P102 of selecting a second data segment to be checked from the live data to be checked according to the data positions includes the following steps:
and P201, selecting a second data segment corresponding to each data position in the live data to be verified according to each data position.
Generally, each first data segment corresponds to one data position, and therefore, when the data positions include a plurality of data positions, a second data segment corresponding to each data position needs to be acquired in the live data to be verified.
For the representation mode of the data position, the representation mode of the server side is also consistent with that of the terminal, when the data position of the server side is represented by the position in all data of the original live data, for example, when the original live data C totally includes 1000 bytes of data, and each data segment is 1 byte (that is, the target data amount is 1 byte), the data position of one data segment can be regarded as the data position of the target data segment from 0 to 1999, when the data position of the target data segment d1 is 100, it is described that the target data segment corresponds to the 100 th data segment in the original live data, and the data position of the terminal is represented by the position in all data of the original live data; when the data position at the server side is characterized by the position in each target segment data, for example, when each target segment data is 500 bytes (i.e., comprises 500 data segments), then 2 target segment data including target segment data C1 (corresponding to data of 1 st to 500 th bytes) and target segment data C2 (corresponding to data of 501 st to 1000 th bytes) are sequentially divided for the original live data C, and when a target data segment d2 corresponds to data of 601 st byte and data of 602 th byte in the original live data, then the data position of the target data segment d2 may be (C2,100) to characterize the target data segment d2 as the 100 th data segment among all data segments of the target segment data C2, which is equivalent to the 600 th data segment among all data segments of the original live data, the data position of the terminal also needs to be represented by the position in each target segment data, and before this, the terminal also needs to obtain a target data partitioning scheme of the server end to partition the live data to be verified according to the target data partitioning scheme to obtain at least two segment data to be verified, and then according to the data position, a second data segment corresponding to the data position is determined in each segment data to be verified.
By the method in the embodiment, when the plurality of data positions are included, the method is equivalent to randomly acquiring a plurality of first data fragments in original live broadcast data, so that the data volume needing to be verified is larger, the difficulty of tampering by an illegal user can be effectively improved, and the reliability of a verification result is improved.
As an optional implementation manner, as in the foregoing method, the step P104 of obtaining the consistency relationship between the live data to be checked and the original live data by comparing the first check code with the second check code includes the following steps:
step P301, comparing the first check code with the second check code to obtain a comparison result.
The comparison result may be information indicating whether the first check code and the second check code are completely identical.
For example, the characters at each position in the first check code and the characters at each position in the second check code are sequentially compared, and when the characters at the same position of the first check code and the second check code are the same, the comparison result of the first check code and the second check code is determined to be the same; when the characters of at least one position of the first check code are different from those of the second check code, the comparison result of the first check code and the second check code is judged to be inconsistent.
And step P302, when the comparison result indicates that the first check code is consistent with the second check code, obtaining a consistency relation for indicating that the live broadcast data to be checked is consistent with the original live broadcast data.
After the comparison result is obtained, the consistency relationship between the first check code and the second check code can be determined.
When the comparison result indicates that the first check code is consistent with the second check code, the first check code is consistent with the second check code under the general condition that only the second data segment which is consistent with each first data segment exists in each first data segment, and meanwhile, the first data segment is randomly acquired in the original live broadcast data, and each second data segment is in the live broadcast data to be checked according to the data position.
And P303, when the comparison result indicates that the first check code is inconsistent with the second check code, obtaining a consistency relation for indicating that the live data to be checked is inconsistent with the original live data.
When each first data segment has a second data segment which is consistent with the first data segment, the first check code and the second check code are necessarily consistent, otherwise, when the first check code and the second check code are inconsistent, the first data segment and the second data segment are in one-to-one correspondence, so that the difference exists between at least one group of corresponding first data segment and second data segment, and the difference also exists between the live data to be checked and the original live data can be judged; based on the method, a consistency relation used for indicating that the live data to be verified is inconsistent with the original live data can be obtained.
By the method in the embodiment, the consistency relationship between the live data to be verified and the original live data can be quickly judged and obtained based on the relationship between the first check code and the second check code.
As shown in fig. 5, according to an embodiment of another aspect of the present application, there is also provided a server 1 for live data verification, including:
the determining module 11 is configured to determine original live broadcast data that needs to be sent to the terminal;
a selection module 12, configured to select a target data segment from multiple data segments of original live broadcast data;
the calculation module 13 is configured to process the target data segment according to a preset scheme to obtain a first check code;
the sending module 14 is configured to send the original live broadcast data, the data position of the target data segment in the original live broadcast data, and the first check code to the terminal, where the terminal is configured to determine, according to a preset scheme, a second check code of data located at the data position in the received live broadcast data to be checked, and check the live broadcast data to be checked by comparing the first check code with the second check code.
Specifically, the specific process of implementing the functions of each module in the apparatus according to the embodiment of the present invention may refer to the related description in the method embodiment, and is not described herein again.
As an alternative embodiment, the selection module 12 includes, as the aforementioned server:
the dividing unit is used for dividing the original live broadcast data according to a target data dividing scheme when the data volume of the original live broadcast data is larger than or equal to a preset data volume to obtain at least two target segmented data;
and the selecting unit is used for randomly selecting at least one target data fragment from a plurality of data fragments of each target fragment data according to a target selection scheme, and determining the data position of each target data fragment in the original live data, wherein the data volume of each target data fragment is the target data volume.
Specifically, the specific process of implementing the functions of each module in the apparatus according to the embodiment of the present invention may refer to the related description in the method embodiment, and is not described herein again.
As an alternative implementation, as the foregoing server, the dividing unit is configured to:
determining the amount of segmented data in the target data partitioning scheme, wherein the amount of segmented data is used for indicating the amount of data of each segmented data obtained by partitioning;
and dividing the original live broadcast data according to the segment data volume to obtain at least two target segment data.
Specifically, the specific process of implementing the functions of each module in the apparatus according to the embodiment of the present invention may refer to the related description in the method embodiment, and is not described herein again.
As an optional implementation manner, the server as aforementioned further includes a security module, where the security module is configured to:
determining a target security level of original live broadcast data;
and selecting a target selection scheme corresponding to the target security level from all the candidate selection schemes, wherein the number of the selected data fragments in each segmented data is different as indicated by the candidate selection schemes corresponding to different security levels.
Specifically, the specific process of implementing the functions of each module in the apparatus according to the embodiment of the present invention may refer to the related description in the method embodiment, and is not described herein again.
As shown in fig. 6, according to an embodiment of another aspect of the present application, there is also provided a terminal 2 for live data verification, including:
the acquisition module 21 is configured to acquire live broadcast data to be checked, data position information, and a first check code from the server, where the first check code is obtained by calculating, by the server, a first data segment located at a data position in original live broadcast data according to a preset scheme;
the selection module 22 is configured to select a second data segment to be verified from the live data to be verified according to the data position;
the calculating module 23 is configured to calculate the second data segment according to a preset scheme to obtain a second check code;
and the comparison module 24 is configured to compare the first check code with the second check code to obtain a consistency relationship between the live data to be checked and the original live data.
Specifically, the specific process of implementing the functions of each module in the apparatus according to the embodiment of the present invention may refer to the related description in the method embodiment, and is not described herein again.
As an alternative embodiment, the terminal 2 as described above includes at least two data locations, and the selection module 22 is configured to:
and selecting a second data segment corresponding to each data position in the live data to be verified according to each data position.
Specifically, the specific process of implementing the functions of each module in the apparatus according to the embodiment of the present invention may refer to the related description in the method embodiment, and is not described herein again.
As an alternative implementation, as the terminal 2, the comparing module 24 is configured to:
obtaining a comparison result by comparing the first check code with the second check code;
when the comparison result indicates that the first check code is consistent with the second check code, obtaining a consistency relation used for indicating that the live data to be checked is consistent with the original live data;
and when the comparison result indicates that the first check code is inconsistent with the second check code, obtaining a consistency relation for indicating that the live data to be checked is inconsistent with the original live data.
Specifically, the specific process of implementing the functions of each module in the apparatus according to the embodiment of the present invention may refer to the related description in the method embodiment, and is not described herein again.
As shown in fig. 7, according to an embodiment of another aspect of the present application, there is also provided a system 3 for live data verification, including the server 1 as before and the terminal 2 as before.
Specifically, the specific process of implementing the functions of each device in the system according to the embodiment of the present invention may refer to the related description in the method embodiment, and details are not described herein again.
According to another embodiment of the present application, there is also provided an electronic apparatus including: as shown in fig. 8, the electronic device may include: the system comprises a processor 1501, a communication interface 1502, a memory 1503 and a communication bus 1504, wherein the processor 1501, the communication interface 1502 and the memory 1503 complete communication with each other through the communication bus 1504.
A memory 1503 for storing a computer program;
the processor 1501 is configured to implement the steps of the above-described method embodiments when executing the program stored in the memory 1503.
The bus mentioned in the electronic device may be a Peripheral Component Interconnect (PCI) bus, an Extended Industry Standard Architecture (EISA) bus, or the like. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown, but this does not mean that there is only one bus or one type of bus.
The communication interface is used for communication between the electronic equipment and other equipment.
The Memory may include a Random Access Memory (RAM) or a Non-Volatile Memory (NVM), such as at least one disk Memory. Optionally, the memory may also be at least one memory device located remotely from the processor.
The Processor may be a general-purpose Processor, including a Central Processing Unit (CPU), a Network Processor (NP), and the like; but also Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), Field Programmable Gate Arrays (FPGAs) or other Programmable logic devices, discrete Gate or transistor logic devices, discrete hardware components.
The embodiment of the present application further provides a computer-readable storage medium, where the storage medium includes a stored program, and when the program runs, the method steps of the above method embodiment are executed.
It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The foregoing are merely exemplary embodiments of the present invention, which enable those skilled in the art to understand or practice the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (12)
1. A live data verification method is characterized by comprising the following steps:
determining original live broadcast data needing to be sent to a terminal;
selecting a target data segment from a plurality of data segments of the original live data;
processing the target data fragment according to a preset scheme to obtain a first check code;
and sending the original live broadcast data, the data position of the target data segment in the original live broadcast data and the first check code to the terminal, wherein the terminal is used for determining a second check code of the data positioned at the data position in the received live broadcast data to be checked according to the preset scheme, and checking the live broadcast data to be checked by comparing the first check code with the second check code.
2. The method of claim 1, wherein selecting a target data segment from a plurality of data segments of the original live data comprises:
when the data volume of the original live broadcast data is larger than or equal to a preset data volume, dividing the original live broadcast data according to a target data dividing scheme to obtain at least two target segmented data;
according to a target selection scheme, at least one target data fragment is randomly selected from a plurality of data fragments of each target segment data, and the data position of each target data fragment in the original live data is determined.
3. The method of claim 2, wherein the partitioning the original live data according to a target data partitioning scheme to obtain at least two target segment data comprises:
determining the amount of segmented data in the target data partitioning scheme, wherein the amount of segmented data is used for indicating the amount of data of each segmented data obtained by partitioning;
and dividing the original live broadcast data according to the segment data volume to obtain at least two target segment data.
4. The method of claim 2, wherein prior to said randomly selecting at least one of the target data segments among the plurality of data segments of each of the target segment data according to the target selection scheme, the method further comprises:
determining a target security level of the original live data;
and selecting the target selection scheme corresponding to the target security level from all candidate selection schemes, wherein the candidate selection schemes corresponding to different security levels indicate that the number of the selected data fragments in each segmented data is different.
5. A live data verification method is characterized by comprising the following steps:
the method comprises the steps of obtaining live broadcast data to be checked from a server, data position information and a first check code, wherein the first check code is obtained by calculating a first data fragment located at a data position in original live broadcast data by the server according to a preset scheme;
selecting a second data segment to be verified from the live data to be verified according to the data position;
calculating the second data fragment according to the preset scheme to obtain a second check code;
and comparing the first check code with the second check code to obtain the consistency relation between the live data to be checked and the original live data.
6. The method according to claim 5, characterized by comprising at least two data positions, and selecting a second data segment to be verified from the live data to be verified according to the data positions comprises:
and selecting the second data segment corresponding to each data position in the live data to be verified according to each data position.
7. The method according to any one of claims 5 to 6, wherein the obtaining of the consistency relationship between the live data to be checked and the original live data by comparing the first check code with the second check code comprises:
obtaining a comparison result by comparing the first check code with the second check code;
when the comparison result indicates that the first check code is consistent with the second check code, obtaining the consistency relation used for indicating that the live data to be checked is consistent with the original live data;
and when the comparison result indicates that the first check code is inconsistent with the second check code, obtaining the consistency relation for indicating that the live data to be checked is inconsistent with the original live data.
8. A server for live data verification, comprising:
the determining module is used for determining original live broadcast data needing to be sent to the terminal;
the selection module is used for selecting a target data segment from a plurality of data segments of the original live broadcast data;
the calculation module is used for processing the target data fragment according to a preset scheme to obtain a first check code;
the sending module is used for sending the original live broadcast data, the data position of the target data fragment in the original live broadcast data and the first check code to the terminal, wherein the terminal is used for determining a second check code of data positioned at the data position in the received live broadcast data to be checked according to the preset scheme, and checking the live broadcast data to be checked by comparing the first check code with the second check code.
9. A terminal for live data verification, comprising:
the system comprises an acquisition module, a verification module and a verification module, wherein the acquisition module is used for acquiring live broadcast data to be verified, data position information and a first verification code from a server, and the first verification code is obtained by calculating a first data fragment positioned at a data position in original live broadcast data by the server according to a preset scheme;
the selection module is used for selecting a second data segment needing to be verified in the live data to be verified according to the data position;
the calculation module is used for calculating the second data segment according to the preset scheme to obtain a second check code;
and the comparison module is used for comparing the first check code with the second check code to obtain the consistency relationship between the live data to be checked and the original live data.
10. A system for live data verification, comprising a server as claimed in claim 8 and a terminal as claimed in claim 9.
11. An electronic device, comprising: the system comprises a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory are communicated with each other through the communication bus;
the memory is used for storing a computer program;
the processor, when executing the computer program, implementing the method of any of claims 1 to 7.
12. A computer-readable storage medium, characterized in that the storage medium comprises a stored program, wherein the program when executed performs the method of any of the preceding claims 1 to 7.
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