CN113938716B - 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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- CN113938716B CN113938716B CN202111154283.1A CN202111154283A CN113938716B CN 113938716 B CN113938716 B CN 113938716B CN 202111154283 A CN202111154283 A CN 202111154283A CN 113938716 B CN113938716 B CN 113938716B
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- 238000000034 method Methods 0.000 title claims abstract description 37
- 238000006073 displacement reaction Methods 0.000 claims abstract description 22
- 230000002688 persistence Effects 0.000 claims abstract description 6
- 238000013475 authorization Methods 0.000 claims description 12
- 238000004891 communication Methods 0.000 claims description 9
- 230000002085 persistent effect Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
Classifications
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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
-
- 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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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Databases & Information Systems (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 for managing the association relationship between the video service provider and the video ID; taking the video ID as bit displacement in the authentication file, adopting a bit to represent whether a certain video ID is authorized or not, and carrying out persistence storage on the authentication file; when a play request of a play client is received, searching an authentication file according to the video ID, judging whether the current video has play permission or not according to the value on the corresponding bit, and judging whether to provide play service or not according to the play permission. The invention adopts the bitmap to store the association relation between the video service provider and the video, and can greatly reduce the persistent storage and the cached storage space 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
Along 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 phones APP, PC application programs, televisions and the like, called as play clients, and the play clients, video service providers and video channel providers provide video services for users. The video service provider is a service provider that provides direct video play services for the user of the play client. The video channel is a manufacturer for providing videos for video service providers, can provide video playing technical support for the video service providers, and can provide videos for multiple 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 a lot of video service providers are accessed, possibly up to tens, hundreds or thousands, whether a certain service provider has playing authority for a certain video is marked in a video library, a service provider-video association relation table needs to be stored in a relation database, and as the scale of the video grows and the number of accessed video service providers increases, the occupied disk storage space increases in multiples, and a large amount of storage space needs to be consumed. Considering authentication execution efficiency, the association relation is also required to be loaded into a cache (cache) when authentication is actually performed, and considerable memory resources are occupied when the data scale is large.
Disclosure of Invention
In view of the above, the invention provides a video authentication method and a system based on bitmap storage, which are used for solving the problem that excessive memory resources are occupied in the playing authentication process of a video channel manufacturer.
The invention discloses a video authentication method based on bitmap storage, which comprises the following steps:
distributing an authentication file for each video service provider for managing the association relationship between the video service provider and the video ID;
taking the video ID as bit displacement in the authentication file, adopting a bit to represent whether a certain video ID is authorized or not, and carrying out persistence storage on the authentication file;
when a play request of a play client is received, searching an authentication file according to the video ID, judging whether the current video has play permission or not according to the value on the corresponding bit, and judging whether to provide play service or not according to the play permission.
Preferably, the managing the association relationship between the video server and the video ID includes:
find out if a video with a certain video id=i has play rights, authorize a video with a certain video id=i, and reclaim a video with a certain video id=i.
Preferably, the step of using a bit to indicate whether a certain video ID is authorized as the bit displacement in the authentication file specifically includes:
treating a plurality of consecutive bytes as a plurality of consecutive bits, the offset value of each bit in the slice of consecutive bits being referred to as a bit shift;
taking the video ID as bit displacement in the authentication file;
unauthorized is indicated by a bit value of 0 and authorized is indicated by a bit value of 1.
Preferably, when receiving a play request from a play client, searching an authentication file according to a video ID, and determining whether the current video has play permission according to a value on a corresponding bit includes:
searching byte_seq of the video with video ID=i;
searching bit sequence bit_seq of video with video ID=i;
reading the value byte value of the byte at byte_seq;
if the value of byte_value & (0 x01< < bit_seq) is not 0, the video is indicated to have playing authority, if the value is 0, the video is indicated to have no playing authority, wherein & is logic AND operation, and < is left shift operation.
Preferably, the finding video id=i is located in the byte_seq=i/8,/represents division rounding; looking up the bit sequence bit_seq=i mod 8 where the video of video id=i is located, mod represents the remainder of the division.
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 video ID=i;
searching bit sequence bit_seq of video with video ID=i;
reading the value byte value of the byte at byte_seq;
video authorization for video id=i: byte_value=byte_value| (0 x01< < bit_seq), where|is a logical or operation, < < is a left shift operation;
when video retraction is authorized for video id=i: byte_value=byte_value| |! (0 x01< < bit_seq), wherein-! Is a logical non-operation.
Preferably, when receiving the play request of the play client, the method further comprises, before searching the authentication file according to the video ID:
and loading the authentication file into a cache, reading a certain displacement in the cache by taking the video ID as an offset, 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:
and the permission management module is used for: the method comprises the steps of distributing an authentication file for each video server, taking a video ID as bit displacement in the authentication file, adopting a bit to represent whether a certain video ID is authorized or not, and carrying out persistence storage on the authentication file;
the permission judging module: when a play request of a play client is received, searching an authentication file according to the video ID, judging whether the current video has play permission or not according to the value on the corresponding bit, and judging whether to provide play service or not according to the play permission.
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 communication with each other through the bus; the memory stores program instructions executable by the processor which the processor invokes 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, the computer-readable storage medium storing computer instructions that cause the computer to implement the method according to 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 association relation between the video service providers and the videos, one byte can represent the existence of 8 videos, each video only occupies 1/8 byte on average, and compared with the storage of the relational database, the invention can save 98.96 percent of storage space, and can greatly reduce the persistent storage and the cached storage space of the authentication file.
2) The invention indicates whether a certain video ID is authorized or not through the bit, takes the video ID as bit displacement, and can improve the read-write speed of video authentication and permission modification and the feedback speed of video playing request through video permission identification, video authorization and recovery authorization of bit reading and logic operation.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a process of playing a video by a client;
FIG. 2 is a 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 of the present invention;
fig. 4 is a video authentication flow chart of the present invention.
Detailed Description
The following description of the embodiments of the present invention will clearly and fully describe the technical aspects of the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, are intended to fall within the scope of the present invention.
Referring to fig. 1, a process of playing a video by a client is as shown in fig. 1: the playing client obtains a video list to be played, namely a video list to be played, from the video service provider. The user selects a video from the playing client to play, and at this time, the playing client requests a playing service interface of the video channel provider to request to provide playing service. The video channel quotient authenticates the validity of the playing request of the client and determines whether the video requested to be played is authorized to the video service quotient. Video services are provided if authorized, and services are denied if unauthorized.
In the process of playing authentication by a video channel provider, a conventional manner 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 facilitator-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 memory structure illustrated in table 1, at least 12 bytes are required to store each record. Assuming that 1000 ten thousand videos are authorized for a certain video server, at least 10000000, 12= 120000000 (bytes) = 114.44 (MB) is needed in the "server-video association table", and as the video scale increases, the accessed video server increases, and the occupied disk storage space increases in multiple. Considering authentication execution efficiency, the association relation is also required to be loaded into a cache when authentication is actually carried out, and considerable memory resources are occupied when the data scale 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 the storage space of a relational database and a cache in the past, and the method includes:
s1, distributing an authentication file for each video service provider for managing the association relation between the video service provider and the video ID;
specifically, since each video channel provider may correspond to a plurality of video service providers, each video service provider has an authentication file cp_id.auth, where $id is the identity ID of a certain video service provider and is a positive integer. When a user selects a certain video to play through a play client, the association relationship between the video server and the video ID is managed, a request video list is sent to the video server, meanwhile, the play client carries the video ID and the video server ID to request a play service interface of the video channel provider to provide play service, the video channel provider finds a corresponding authentication file through the video server ID, and plays and authenticates through the authentication file, for example, whether the video with video ID=i has play authority, video authorization with certain video ID=i, and video retrieval authorization with certain video ID=i are judged.
S2, taking the video ID as bit displacement in the authentication file, and adopting a bit to represent whether a certain video ID is authorized or not, 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 an offset value of each bit in the consecutive bits is called "bit shift". For example, byte 0 has 8 bits with bit shifts of 0,1,2,3,4,5,6,7, byte 1 has 8 bits with bit shifts of 8,9,10,11,12,13,14,15, and so on.
With a certain video ID as a displacement, for example, video ID i, i is the bit displacement of the video in the authentication file. The unauthorized is indicated by a bit value of 0 on the bit corresponding to the bit displacement, the authorized is indicated by a bit value of 1, then the authorized is indicated by a bit value of 1 on the displacement, and the authorized is indicated by a bit value of 0. For example, fig. 3 is a schematic diagram of bitmap storage, in which rights are represented by bitmaps, bit values of displacement 2 are 1, and video id=2 is authorized; a bit value of 0 for a displacement of 10 indicates that the video with video id=10 is unauthorized; a bit value of 1 for a displacement of 20939857 indicates that video id= 20939857 is authorized, and so on.
And S3, when a play request of the play client is received, searching an authentication file according to the video ID, judging whether the current video has play permission or not according to the value on the corresponding bit, and judging whether to provide play service or not according to the play permission.
Since the minimum unit of reading/writing a file by the mainstream operating system is a byte, for an operation on a certain bit, reading/writing an authentication file should be performed in units of bytes, and it is necessary to find the byte order (byte order) in which the bit is located, and what number of bits (bit order) of the bit is in the byte:
the endian byte_seq=i/8 where the video of video id=i is located,/represents division rounding;
the bit sequence bit_seq=i mod 8 where the video of video id=i is located, mod representing the remainder of the division.
Referring to the video authentication flow chart of fig. 4, when a play request of a play client is received, searching an authentication file according to a video ID to determine whether a video with video id=i has play rights, which specifically includes:
searching byte_seq of the video with video ID=i;
searching bit sequence bit_seq of video with video ID=i;
reading the value byte value of the byte at byte_seq;
if the value of byte_value & (0 x01< < bit_seq) is not 0, the video is provided with playing permission, playing service is provided, if the value is 0, the video is provided with no playing permission, and permission errors are returned, wherein "&" is a logical AND operation, and "<" is a left shift operation. 0x01 is hexadecimal.
In addition, when a new video is 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 video ID=i;
searching bit sequence bit_seq of video with video ID=i;
reading the value byte value of the byte at byte_seq;
byte_value=byte_value| (0 x01< < bit_seq), where "|" is a logical or operation;
video retraction authorization for a certain video id=i specifically includes:
searching byte_seq of the video with video ID=i;
searching bit sequence bit_seq of video with video ID=i;
reading the value byte value of the byte at byte_seq;
byte_value=byte_value| |! (0 x01< < bit_seq), where "+.! "is a logical not operation.
When a play request of a play client is received, before searching an authentication file according to a video ID, the authentication file is loaded into a cache, so that the authentication execution efficiency can be improved. Currently, the main cache product redis, memcache directly provides bitmap operation, and can directly read a certain displacement in the cache. And taking the video ID as an offset, reading a certain displacement in the cache, and inquiring, reading and setting the authority in a key value pair mode.
For example, query authority employs getbit key offset, where key is a stored key value (e.g., author_key: $id, where $id is the channel ID) offset is an offset, where video ID is used as the offset, for example: the getbit author_key 1 20939857 can obtain channel 1, and whether the video with id= 20939857 has rights. For another example, set permissions use setbit key offset value, where key is a stored key value (e.g., author_key: $id, where $id is the channel ID), offset is an offset, where video ID is used as the offset; value is a bit value, 1 indicates that rights are set, and 0 indicates that no rights are set. For example setbit author_key 1 20939857, rights to this video channel 1, id= 20939857 may be set.
The invention adopts a bitmap storage mode, one byte can represent the existence of 8 videos, and each video only occupies 1/8 byte on average; if a relational database is adopted to indicate whether a video exists or not, 12 bytes are needed, and compared with the relational database, the storage method provided by the embodiment of the disclosure can save (12-1/8)/12×100% =98.96% of storage space. If the storage space is 10000000 bits=10000000/8 (bytes) =1.19 (MB) for 1000 ten thousand videos, the storage space occupies at least 114.44MB by adopting the conventional relational database storage method.
Corresponding to the embodiment of the method, the invention also discloses a video authentication system based on bitmap storage, which comprises:
and the permission management module is used for: the method comprises the steps of distributing an authentication file for each video server, taking a video ID as bit displacement in the authentication file, adopting a bit to represent whether a certain video ID is authorized or not, and carrying out persistence storage on the authentication file;
the permission judging module: when a play request of a play client is received, searching an authentication file according to the video ID, judging whether the current video has play permission or not according to the value on the corresponding bit, and judging whether to provide play service or not according to the play permission.
The above method embodiments and system embodiments are in one-to-one correspondence, and the system embodiments will be briefly described with reference to the method embodiments.
The 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 communication with each other through the bus; the memory stores program instructions executable by the processor that the processor invokes to implement the aforementioned methods of the present invention.
The invention also discloses a computer readable storage medium storing computer instructions for causing a computer to implement all or part of the steps of the methods of the embodiments of the invention. The storage medium includes: a usb disk, a removable hard disk, a ROM, a RAM, a magnetic or optical disk, or other various media capable of storing program code.
The system embodiments described above are merely illustrative, wherein the elements illustrated as separate elements may or may not be physically separate, and the elements shown as elements may or may not be physical elements, i.e., may be distributed over a plurality of network elements. One of ordinary skill in the art may select some or all of the modules according to actual needs without performing any inventive effort to achieve the objectives of the present embodiment.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (8)
1. A video authentication method based on bitmap storage, the method comprising:
distributing an authentication file for each video service provider for managing the association relationship between the video service provider and the video ID;
taking the video ID as bit displacement in the authentication file, adopting a bit to represent whether a certain video ID is authorized or not, and carrying out persistence storage on the authentication file; the step of using the video ID as a bit shift in the authentication file to indicate whether a certain video ID is authorized specifically includes:
treating a plurality of consecutive bytes as a plurality of consecutive bits, the offset value of each bit in the slice of consecutive bits being referred to as a bit shift;
taking the video ID as bit displacement in the authentication file;
unauthorized is indicated by a bit value of 0, and a bit value of 1 indicates authorized; when a play request of a play client is received, searching an authentication file according to the video ID, judging whether the current video has play permission or not according to the value on the corresponding bit, and judging whether to provide play service or not according to the play permission; when receiving a play request of a play client, searching an authentication file according to a video ID, and judging whether the current video has play permission or not according to a value on a corresponding bit position specifically comprises the following steps:
searching byte_seq of the video with video ID=i;
searching bit sequence bit_seq of video with video ID=i;
reading the value byte value of the byte at byte_seq;
if the value of byte_value & (0 x01< < bit_seq) is not 0, the video is indicated to have playing authority, if the value is 0, the video is indicated to have no playing authority, wherein & is logic AND operation, and < is left shift operation.
2. The bitmap storage-based video authentication method according to claim 1, wherein the managing association between the video server and the video ID comprises:
find out if a video with a certain video id=i has play rights, authorize a video with a certain video id=i, and reclaim a video with a certain video id=i.
3. The bitmap storage-based video authentication method according to claim 2, wherein the byte_seq=i/8,/represents a division rounding where the video looking up video id=i is located; looking up the bit sequence bit_seq=i mod 8 where the video of video id=i is located, mod represents the remainder of the division.
4. A video authentication method based on bitmap storage according to claim 3, 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 video ID=i;
searching bit sequence bit_seq of video with video ID=i;
reading the value byte value of the byte at byte_seq;
video authorization for video id=i: byte_value=byte_value| (0 x01< < bit_seq), where|is a logical or operation, < < is a left shift operation;
when video retraction is authorized for video id=i: byte_value=byte_value| |! (0 x01< < bit_seq), wherein-! Is a logical non-operation.
5. The bitmap storage-based video authentication method according to claim 2, further comprising, when a play request of a play client is received, before searching for an authentication file according to a video ID:
and loading the authentication file into a cache, reading a certain displacement in the cache by taking the video ID as an offset, and inquiring and reading the authority in a key value pair mode.
6. A bitmap storage-based video authentication system using the method of any one of claims 1 to 5, said system comprising:
and the permission management module is used for: the method comprises the steps of distributing an authentication file for each video server, taking a video ID as bit displacement in the authentication file, adopting a bit to represent whether a certain video ID is authorized or not, and carrying out persistence storage on the authentication file;
the permission judging module: when a play request of a play client is received, searching an authentication file according to the video ID, judging whether the current video has play permission or not according to the value on the corresponding bit, and judging whether to provide play service or not according to the play permission.
7. 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 communication with each other through the bus;
the memory stores program instructions executable by the processor, the processor invoking the program instructions to implement the method of any of claims 1-5.
8. A computer readable storage medium storing computer instructions for causing a computer to implement the method of any one of claims 1 to 5.
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