CN113938716A - Video authentication method and system based on bitmap storage - Google Patents
Video authentication method and system based on bitmap storage Download PDFInfo
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- CN113938716A CN113938716A CN202111154283.1A CN202111154283A CN113938716A CN 113938716 A CN113938716 A CN 113938716A CN 202111154283 A CN202111154283 A CN 202111154283A CN 113938716 A CN113938716 A CN 113938716A
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- 238000006073 displacement reaction Methods 0.000 claims abstract description 19
- 230000002085 persistent effect Effects 0.000 claims abstract description 6
- 238000013475 authorization Methods 0.000 claims description 16
- 238000004891 communication Methods 0.000 claims description 9
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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
- H04N21/239—Interfacing the upstream path of the transmission network, e.g. prioritizing client content requests
- H04N21/2393—Interfacing the upstream path of the transmission network, e.g. prioritizing client content requests involving handling client requests
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
- H04N21/254—Management at additional data server, e.g. shopping server, rights management server
- H04N21/2541—Rights Management
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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
- H04N21/45—Management operations performed by the client for facilitating the reception of or the interaction with the content or administrating data related to the end-user or to the client device itself, e.g. learning user preferences for recommending movies, resolving scheduling conflicts
- H04N21/462—Content or additional data management, e.g. creating a master electronic program guide from data received from the Internet and a Head-end, controlling the complexity of a video stream by scaling the resolution or bit-rate based on the client capabilities
- H04N21/4627—Rights management associated to the content
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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
- H04N21/47—End-user applications
- H04N21/472—End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification, for manipulating displayed content
- H04N21/47202—End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification, for manipulating displayed content for requesting content on demand, e.g. video on demand
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- Signal Processing (AREA)
- Computer Security & Cryptography (AREA)
- Human Computer Interaction (AREA)
- Storage Device Security (AREA)
Abstract
The invention provides a video authentication method and a system based on bitmap storage, wherein the method comprises the following steps: distributing an authentication file for each video service provider to manage the association relationship between the video service provider and the video ID; using the video ID as bit displacement in the authentication file, adopting one bit to represent whether a certain video ID is authorized, and performing persistent storage on the authentication file; when a playing request of a playing client is received, the authentication file is searched according to the video ID, whether the current video has a playing authority is judged according to the value on the corresponding bit position, and whether a playing service is provided is judged according to the playing authority. The invention adopts the bitmap to store the incidence relation between the video service provider and the video, and can greatly reduce the storage space of the persistent storage and the cache of the authentication file.
Description
Technical Field
The invention belongs to the field of video authentication, and particularly relates to a video authentication method and system based on bitmap storage.
Background
With the popularization of various intelligent terminal devices, more and more people are used to play videos through terminals, including but not limited to mobile phone Applications (APP), Personal Computer (PC) applications, televisions and the like, called as playing clients, and the playing clients, video service providers and video channel providers jointly provide video services for users. The video service provider is a service provider for providing direct video playing service for users of the playing client. The video channel provider is a manufacturer for providing videos for the video service provider, and the video channel provider can provide video playing technical support for the video service provider and can provide videos for a plurality of video service providers.
After a user initiates a video playing request from a playing client, a video channel merchant authenticates the validity of the playing request of the client, and the problems exist in the playing authentication process of the video channel merchant: because there are many video service providers, which may reach dozens, even hundreds or thousands, and whether a certain service provider has a playing right for a certain video needs to be marked in the video library, a service provider-video association relation table needs to be stored in a relational database. Considering the authentication execution efficiency, the association relationship needs to be loaded into a cache (cache) when the authentication is actually performed, and a considerable memory resource is also occupied when the data size is large.
Disclosure of Invention
In view of this, the present invention provides a video authentication method and system based on bitmap storage, which are used to solve the problem that a video channel provider occupies too much memory resources during playing authentication.
In a first aspect of the present invention, a video authentication method based on bitmap storage is disclosed, the method comprising:
distributing an authentication file for each video service provider to manage the association relationship between the video service provider and the video ID;
using the video ID as bit displacement in the authentication file, adopting one bit to represent whether a certain video ID is authorized, and performing persistent storage on the authentication file;
when a playing request of a playing client is received, the authentication file is searched according to the video ID, whether the current video has a playing authority is judged according to the value on the corresponding bit position, and whether a playing service is provided is judged according to the playing authority.
Preferably, the managing the association relationship between the video service provider and the video ID includes:
and searching whether the video with a certain video ID (i) has playing authority, video authorization with a certain video ID (i), and video retraction authorization with a certain video ID (i).
Preferably, the taking the video ID as a bit shift in the authentication file, and using one bit to indicate whether a certain video ID is authorized specifically includes:
regarding a plurality of continuous bytes as a plurality of continuous bits, wherein the offset value of each bit in the continuous bit is called bit displacement;
using the video ID as bit displacement in the authentication file;
a bit value of 0 indicates unauthorised and a bit value of 1 indicates authorised.
Preferably, when receiving a play request from a play client, the searching for the authentication file according to the video ID, and determining whether the current video has a play right according to the value on the corresponding bit specifically includes:
searching byte _ seq of the video with the video ID ═ i;
searching a bit sequence bit _ seq of the video with the video ID ═ i;
reading a value byte _ value of a byte at byte _ seq;
if the byte _ value & (0x01< < bit _ seq) value is not 0, it indicates that there is a play right for the video, and if the value is 0, it indicates that there is no play right for the video, where & is a logical and operation and < < is a left shift operation.
Preferably, the byte _ seq of the video with the searched video ID ═ i is i/8,/means division rounding; and searching a bit sequence bit _ seq of the video with the video ID being i mod 8, wherein mod represents division and remainder.
Preferably, the video authorization for a certain video ID ═ i and the video retraction authorization for a certain video ID ═ i specifically include:
searching byte _ seq of the video with the video ID ═ i;
searching a bit sequence bit _ seq of the video with the video ID ═ i;
reading a value byte _ value of a byte at byte _ seq;
when video authorization is given to video ID i: byte _ value | (0x01< < bit _ seq), where | is a logical or operation, < < is a left shift operation;
when receiving the feedback right for the video with the video ID being i: byte _ value |! (0x01< < bit _ seq), where! Is a logical not operation.
Preferably, when a play request of the play client is received, before searching for the authentication file according to the video ID, the method further includes:
loading the authentication file into a cache, taking the video ID as an offset, reading a bit of a certain bit shift in the cache, and inquiring and reading the authority in a key value pair mode.
In a second aspect of the present invention, a video authentication system based on bitmap storage is disclosed, the system comprising:
the authority management module: the video authentication system is used for allocating an authentication file for each video service provider, using the video ID as bit displacement in the authentication file, adopting one bit to represent whether a certain video ID is authorized or not, and persistently storing the authentication file;
an authority judgment module: when a playing request of a playing client is received, the authentication file is searched according to the video ID, whether the current video has a playing authority is judged according to the value on the corresponding bit position, and whether a playing service is provided is judged according to the playing authority.
In a third aspect of the present invention, an electronic device is disclosed, comprising: at least one processor, at least one memory, a communication interface, and a bus; the processor, the memory and the communication interface complete mutual communication through the bus; the memory stores program instructions executable by the processor, which program instructions are invoked by the processor to implement the method according to the first aspect of the invention.
In a fourth aspect of the invention, a computer-readable storage medium is disclosed, which stores computer instructions for causing a computer to implement the method of the first aspect of the invention.
Compared with the prior art, the invention has the following beneficial effects:
1) the invention adopts the bitmap to store the incidence relation between the video service provider and the video, one byte can represent the existence of 8 videos, each video only occupies 1/8 bytes on average, and compared with the storage of a relational database, the invention can save the storage space of 98.96 percent and greatly reduce the storage space of the persistent storage and the cache of the authentication file.
2) The invention represents whether a certain video ID is authorized or not through the bit, takes the video ID as bit displacement, can carry out video authority identification and video authorization and authorization recovery through comparing bit reading and logic operation, improves the read-write speed of video authentication and authority modification, and improves the feedback speed of a video playing request.
Drawings
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, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram illustrating a process of playing a video at a client;
FIG. 2 is a schematic flow chart of a video authentication method based on bitmap storage according to the present invention;
FIG. 3 is a schematic diagram of bitmap storage according to the present invention;
fig. 4 is a flow chart of video authentication according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
Referring to fig. 1, the process of playing the video by the client is shown in fig. 1: the playing client acquires a video list to be played, namely a video list to be played, from a video service provider. The user selects a video from the playing client to play, and the playing client requests a playing service interface of the video channel provider to provide playing service. And the video channel provider authenticates the validity of the playing request of the client and determines whether the video requested to be played is authorized to be used by the video service provider. Video services are provided if authorized and denied if not.
In the process of playing authentication by a video channel provider, the conventional way is to store at least two fields in a relational database: video service provider ID and video ID, the table structure of which is shown in the following table
Table 1 video service provider-video association table storage table structure
| Service provider ID (int type) | Video ID (big type) |
| 1 | 20939857 |
| 1 | 20939961 |
| 1 | 20940129 |
| 1 | …… |
According to the storage structure illustrated in table 1, each record is stored, requiring at least 12 bytes. Assuming that 1000 ten thousand videos are authorized by a certain video service provider, at least 10000000 × 12 — 120000000 (bytes) — 114.44(MB) is required in the "service provider-video association table", and as the video size increases and the number of video service providers to be accessed increases, the occupied disk storage space increases by multiple. Considering the authentication execution efficiency, the association relationship needs to be loaded into the cache when the authentication is actually performed, and a considerable memory resource is also occupied when the data size is large.
Referring to fig. 2, an embodiment of the present invention provides a video authentication method based on bitmap storage, which can greatly reduce storage spaces of a previous relational database and a cache, and the method includes:
s1, distributing an authentication file for each video service provider for managing the association relationship between the video service provider and the video ID;
specifically, each video channel provider may correspond to a plurality of video providers, and therefore each video provider has an authentication file cp _ ID. The video channel provider sends a video request list to the video service provider when a user selects a certain video to play through a playing client, the playing client carries the video ID and the video service provider ID to request a playing service interface of the video channel provider to provide playing service, the video channel provider finds a corresponding authentication file through the video service provider ID, and plays and authenticates through the authentication file, for example, whether the video with the video ID of i has a playing authority, video authorization with the video ID of i, and video retraction authorization with the video ID of i are judged.
S2, using the video ID as bit displacement in the authentication file, adopting one bit to represent whether a certain video ID is authorized, and performing persistent storage on the authentication file;
specifically, each byte has 8 bits, and a plurality of consecutive bytes can be regarded as a plurality of consecutive bits, and the offset value of each bit in the piece of consecutive bits is called "bit shift". For example, the 0 th byte has 8 bits with bit shifts of 0,1,2,3,4,5,6,7, the 1 st byte also has 8 bits with bit shifts of 8,9,10,11,12,13,14,15, and so on.
And using a certain video ID as a displacement, for example, the video ID is i, and then i is the bit displacement of the video in the authentication file. If the bit value of 0 on the bit corresponding to the bit displacement is used to indicate that the video ID is not authorized, and if the bit value of 1 on the bit corresponding to the bit displacement is used to indicate that the video ID is authorized, the bit value of 1 on the bit displacement is used to indicate that the video ID is authorized, and 0 indicates that the video ID is not authorized. For example, fig. 3 is a schematic diagram of bitmap storage, where a bitmap is used to indicate rights, a bit value of 2 is 1, and a video with a video ID of 2 is authorized; a bit value of 0 with a displacement of 10 indicates that the video with the video ID of 10 is unauthorized; the bit value of the displacement 20939857 is 1, which indicates that the video with video ID 20939857 is authorized, and so on.
S3, when receiving the playing request of the playing client, searching the authentication file according to the video ID, judging whether the current video has the playing authority according to the value on the corresponding bit position, and judging whether to provide the playing service according to the playing authority.
Since the minimum unit of reading/writing a file by the mainstream operating system is byte, for the operation of a bit, the authentication file should be read or written in units of byte, and the byte order (byte order) where the bit is located and the bit number (bit order) of the bit in this byte need to be found:
the byte _ seq of the video with the video ID being i is i/8,/means division and rounding;
the bit sequence bit _ seq of the video with the video ID equal to i is equal to i mod 8, and mod represents the remainder of division.
Referring to the video authentication flowchart in fig. 4, when a play request from a play client is received, an authentication file is searched according to a video ID, and whether a video with a video ID ═ i has a play right is determined, which specifically includes:
searching byte _ seq of the video with the video ID ═ i;
searching a bit sequence bit _ seq of the video with the video ID ═ i;
reading a value byte _ value of a byte at byte _ seq;
if the byte _ value & (0x01< < bit _ seq) value is not 0, it indicates that there is a play right for the video, a play service is provided, if the value is 0, it indicates that there is no play right for the video, a right error is returned, where "&" is a logical and operation, and "<" is a left shift operation. 0x01 is hexadecimal.
In addition, when a video is newly added or deleted or the video playing authority is changed, a certain video can be authorized or fed back. The video authorization for a certain video ID ═ i specifically includes:
searching byte _ seq of the video with the video ID ═ i;
searching a bit sequence bit _ seq of the video with the video ID ═ i;
reading a value byte _ value of a byte at byte _ seq;
byte _ value ═ byte _ value | (0x01< < bit _ seq), where "|" is a logical or operation;
the video retraction authorization for a certain video ID ═ i specifically includes:
searching byte _ seq of the video with the video ID ═ i;
searching a bit sequence bit _ seq of the video with the video ID ═ i;
reading a value byte _ value of a byte at byte _ seq;
byte _ value |! (0x01< < bit _ seq), where "! "is a logical not operation.
When a playing request of a playing client is received, the authentication file is loaded into the cache before the authentication file is searched according to the video ID, so that the authentication execution efficiency can be improved. At present, the mainstream cache products redis and memcache directly provide bitmap operation, and bit reading can be directly carried out on a certain bit shift in the cache. And taking the video ID as an offset, reading a bit of a certain bit shift in the cache, and inquiring, reading and setting the authority in a key value pair mode.
For example, the query authority may use getbit key offset, where key is a stored key (e.g., authority _ key: $ ID, where $ ID is the channel ID) offset, and the video ID is used as the offset, for example: and 120939857, obtaining channel 1, and whether the video with ID 20939857 has authority. For another example, the set authority uses setkey offset value, where key is the stored key value (e.g., authority _ key: $ ID, where $ ID is the ID of the channel), offset is the offset, and the video ID is used as the offset; value is a bit value, 1 indicates a setting to authorized, and 0 indicates a setting to not authorized. An example setbit authority _ key 120939857 may set rights to the video channel 1, ID 20939857.
The invention adopts a bitmap storage mode, one byte can represent whether 8 videos exist, and each video only occupies 1/8 bytes on average; if a relational database is used to indicate whether a video exists or not, 12 bytes are needed, and the storage method proposed by the embodiment of the present disclosure can save storage space of (12-1/8)/12 × 100% — 98.96% compared with the storage of the relational database. If the storage space is 10000000 bits 10000000/8 bytes 1.19 MB calculated by 1000 ten thousand videos, the space occupies at least 114.44MB by using the traditional relational database storage method.
Corresponding to the above method embodiment, the invention also discloses a video authentication system based on bitmap storage, the system includes:
the authority management module: the video authentication system is used for allocating an authentication file for each video service provider, using the video ID as bit displacement in the authentication file, adopting one bit to represent whether a certain video ID is authorized or not, and persistently storing the authentication file;
an authority judgment module: when a playing request of a playing client is received, the authentication file is searched according to the video ID, whether the current video has a playing authority is judged according to the value on the corresponding bit position, and whether a playing service is provided is judged according to the playing authority.
The above method embodiments and system embodiments are in one-to-one correspondence, and please refer to the method embodiments for brief description of the system embodiments.
The present invention also discloses an electronic device, comprising: at least one processor, at least one memory, a communication interface, and a bus; the processor, the memory and the communication interface complete mutual communication through the bus; the memory stores program instructions executable by the processor, which invokes the program instructions to implement the methods of the invention described above.
The invention also discloses a computer readable storage medium which stores computer instructions for causing the computer to implement all or part of the steps of the method of the embodiment of the invention. The storage medium includes: u disk, removable hard disk, ROM, RAM, magnetic disk or optical disk, etc.
The above-described system embodiments are merely illustrative, wherein the units described as separate parts may or may not be physically separate, and the parts shown as units may or may not be physical units, i.e. may be distributed over a plurality of network units. Without creative labor, a person skilled in the art can select some or all of the modules according to actual needs to achieve the purpose of the solution of the embodiment.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. A video authentication method based on bitmap storage is characterized by comprising the following steps:
distributing an authentication file for each video service provider to manage the association relationship between the video service provider and the video ID;
using the video ID as bit displacement in the authentication file, adopting one bit to represent whether a certain video ID is authorized, and performing persistent storage on the authentication file;
when a playing request of a playing client is received, the authentication file is searched according to the video ID, whether the current video has a playing authority is judged according to the value on the corresponding bit position, and whether a playing service is provided is judged according to the playing authority.
2. The bitmap storage-based video authentication method as claimed in claim 1, wherein the managing the association relationship between the video service provider and the video ID comprises:
and searching whether the video with a certain video ID (i) has playing authority, video authorization with a certain video ID (i), and video retraction authorization with a certain video ID (i).
3. The bitmap storage-based video authentication method as claimed in claim 2, wherein the taking the video ID as a bit shift in the authentication file, and using a bit to indicate whether a certain video ID is authorized specifically comprises:
regarding a plurality of continuous bytes as a plurality of continuous bits, wherein the offset value of each bit in the continuous bit is called bit displacement;
using the video ID as bit displacement in the authentication file;
a bit value of 0 indicates unauthorised and a bit value of 1 indicates authorised.
4. The bitmap storage-based video authentication method as claimed in claim 3, wherein the step of searching for an authentication file according to the video ID when receiving a play request from the play client, and determining whether the current video has a play right according to the value on the corresponding bit specifically comprises:
searching byte _ seq of the video with the video ID ═ i;
searching a bit sequence bit _ seq of the video with the video ID ═ i;
reading a value byte _ value of a byte at byte _ seq;
if the byte _ value & (0x01< < bit _ seq) value is not 0, it indicates that there is a play right for the video, and if the value is 0, it indicates that there is no play right for the video, where & is a logical and operation and < < is a left shift operation.
5. The bitmap storage-based video authentication method according to claim 4, wherein the byte _ seq of the video with the searched video ID ═ i is i/8,/means division rounding; and searching a bit sequence bit _ seq of the video with the video ID being i mod 8, wherein mod represents division and remainder.
6. The bitmap storage-based video authentication method as claimed in claim 5, wherein the video authorization for a certain video ID ═ i and the video retraction authorization for a certain video ID ═ i specifically include:
searching byte _ seq of the video with the video ID ═ i;
searching a bit sequence bit _ seq of the video with the video ID ═ i;
reading a value byte _ value of a byte at byte _ seq;
when video authorization is given to video ID i: byte _ value | (0x01< < bit _ seq), where | is a logical or operation, < < is a left shift operation;
when receiving the feedback right for the video with the video ID being i: byte _ value |! (0x01< < bit _ seq), where! Is a logical not operation.
7. The bitmap storage-based video authentication method as claimed in claim 3, wherein when receiving a play request from the playing client, before searching for the authentication file according to the video ID, the method further comprises:
loading the authentication file into a cache, taking the video ID as an offset, reading a bit of a certain bit shift in the cache, and inquiring and reading the authority in a key value pair mode.
8. A video authentication system based on bitmap storage, the system comprising:
the authority management module: the video authentication system is used for allocating an authentication file for each video service provider, using the video ID as bit displacement in the authentication file, adopting one bit to represent whether a certain video ID is authorized or not, and persistently storing the authentication file;
an authority judgment module: when a playing request of a playing client is received, the authentication file is searched according to the video ID, whether the current video has a playing authority is judged according to the value on the corresponding bit position, and whether a playing service is provided is judged according to the playing authority.
9. An electronic device, comprising: at least one processor, at least one memory, a communication interface, and a bus;
the processor, the memory and the communication interface complete mutual communication through the bus;
the memory stores program instructions executable by the processor, the processor invoking the program instructions to implement the method of any one of claims 1-7.
10. A computer-readable storage medium storing computer instructions for causing a computer to implement the method of any one of claims 1 to 7.
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