CN110851849A - Encryption method and device for free map image data - Google Patents
Encryption method and device for free map image data Download PDFInfo
- Publication number
- CN110851849A CN110851849A CN201911101679.2A CN201911101679A CN110851849A CN 110851849 A CN110851849 A CN 110851849A CN 201911101679 A CN201911101679 A CN 201911101679A CN 110851849 A CN110851849 A CN 110851849A
- Authority
- CN
- China
- Prior art keywords
- sqlite database
- encrypted
- map image
- image
- obtaining
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/60—Protecting data
- G06F21/602—Providing cryptographic facilities or services
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/50—Information retrieval; Database structures therefor; File system structures therefor of still image data
- G06F16/51—Indexing; Data structures therefor; Storage structures
Abstract
The invention discloses an encryption method and device of free map image data, which relate to the technical field of Internet map service, and the method comprises the steps of obtaining a map image to be encrypted; obtaining a plurality of image tiles according to the map image to be encrypted; storing the number of image tiles in a Sqlite database; encrypting the Sqlite database; decrypting the encrypted Sqlite database; and releasing the decrypted Sqlite database. The technical problem that the open source Sqlite database is not in line with the confidentiality required by the geographic data and is easy to steal in the prior art is solved. The technical effects of automatically encrypting the Sqlite image tiles, preventing geographic data from being stolen and providing map image services for users free are achieved.
Description
Technical Field
The invention relates to the technical field of internet map service, in particular to an encryption method and device for free map image data.
Background
In the existing internet map service, the mainstream scheme provided by the image map service is to purchase image data corresponding to a geographic range, then slice the remote sensing image into a Sqlite tile database, publish the Sqlite tile database as a standard OGC map service depending on gis map service software, generally support WMS and WMTS type services, and finally load and present the service to a user on a front-end platform.
However, in the process of implementing the technical solution in the embodiment of the present invention, the inventor of the present invention finds that the above prior art has at least the following technical problems:
in the prior art, the open source Sqlite database does not meet the confidentiality required by geographic data, so that the technical problem that the database is easy to steal exists.
Disclosure of Invention
The embodiment of the invention provides a method and a device for encrypting free map image data, which are used for solving the technical problem that an open source Sqlite database is not in line with the confidentiality required by geographic data and is easy to steal in the prior art. The technical effects of automatically encrypting the Sqlite image tiles, preventing geographic data from being stolen and providing map image services for users free are achieved.
In view of the foregoing problems, embodiments of the present invention provide a method and an apparatus for encrypting free map image data.
In a first aspect, the invention provides a method for encrypting free map image data, which comprises the steps of obtaining a map image to be encrypted; obtaining a plurality of image tiles according to the map image to be encrypted; storing the number of image tiles in a Sqlite database; encrypting the Sqlite database; decrypting the encrypted Sqlite database; and releasing the decrypted Sqlite database.
Preferably, the obtaining a plurality of image tiles according to the map image to be encrypted includes: obtaining the range of the map image to be encrypted; and slicing the map image to be encrypted into a plurality of image tiles according to the range of the map image to be encrypted.
Preferably, the storing the plurality of image tiles into a Sqlite database includes: generating a storage path file corresponding to the plurality of image tiles according to the range of the map image to be encrypted, wherein the format of the storage path file is a row number, a column number and a level number; storing the number of image tiles into the Sqlite database according to the save path file.
Preferably, the encrypting the Sqlite database includes: adding an account number to the Sqlite database; and setting a password according to the account, wherein the password and the account are in a one-to-one correspondence relationship.
Preferably, the decrypting the encrypted Sqlite database includes: obtaining the legal identity authentication of the user according to the account and the corresponding password; obtaining a decryption key of the encrypted Sqlite database; and decrypting the encrypted Sqlite database according to the decryption key.
Preferably, the publishing the decrypted Sqlite database includes: setting an external interface for the decrypted Sqlite database; and issuing the decrypted Sqlite database through the external interface.
In a second aspect, the present invention provides an encryption apparatus for free map image data, the apparatus comprising:
the first obtaining unit is used for obtaining a map image to be encrypted;
a second obtaining unit, configured to obtain a plurality of image tiles according to the map image to be encrypted;
a first storage unit to store the number of image tiles into a Sqlite database;
a first encryption unit to encrypt the Sqlite database;
a first decryption unit for decrypting the encrypted Sqlite database;
a first publishing unit, configured to publish the decrypted Sqlite database.
Preferably, the second obtaining unit includes:
a third obtaining unit, configured to obtain a range of the map image to be encrypted;
the first slicing unit is used for slicing the map image to be encrypted into a plurality of image tiles according to the range of the map image to be encrypted.
Preferably, the first storage unit includes:
a first generating unit, configured to generate a saved path file corresponding to the plurality of image tiles according to the range of the map image to be encrypted, where the saved path file is in a format of a row number, a column number, and a level number;
a second storage unit, configured to store the number of image tiles into the Sqlite database according to the save path file.
Preferably, the first encryption unit includes:
a first adding unit, configured to add an account to the Sqlite database;
the first setting unit is used for setting a password according to the account, wherein the password and the account are in a one-to-one correspondence relationship.
Preferably, the first decryption unit includes:
a fourth obtaining unit, configured to obtain a legal identity authentication of the user according to the account and the corresponding password;
a fifth obtaining unit configured to obtain a decryption key of the encrypted Sqlite database;
and the second decryption unit is used for decrypting the encrypted Sqlite database according to the decryption key.
Preferably, the first distribution unit includes:
a second setting unit configured to set an external interface to the decrypted Sqlite database;
a second distribution unit, configured to distribute the decrypted Sqlite database through the external interface.
In a third aspect, the present invention provides an encryption apparatus for free map image data, comprising a memory, a processor and a computer program stored in the memory and operable on the processor, wherein the processor implements the following steps when executing the program:
obtaining a map image to be encrypted; obtaining a plurality of image tiles according to the map image to be encrypted; storing the number of image tiles in a Sqlite database; encrypting the Sqlite database; decrypting the encrypted Sqlite database; and releasing the decrypted Sqlite database.
In a fourth aspect, the invention provides a computer-readable storage medium having a computer program stored thereon, the program, when executed by a processor, implementing the steps of:
obtaining a map image to be encrypted; obtaining a plurality of image tiles according to the map image to be encrypted; storing the number of image tiles in a Sqlite database; encrypting the Sqlite database; decrypting the encrypted Sqlite database; and releasing the decrypted Sqlite database.
One or more technical solutions in the embodiments of the present invention at least have one or more of the following technical effects:
the embodiment of the invention provides a method and a device for encrypting free map image data, wherein the method comprises the following steps: obtaining a map image to be encrypted; obtaining a plurality of image tiles according to the map image to be encrypted; storing the number of image tiles in a Sqlite database; encrypting the Sqlite database; decrypting the encrypted Sqlite database; and releasing the decrypted Sqlite database. The encryption is carried out by adding the account number password to each image tile, so that the technical problem that the open source Sqlite database is easy to steal because the open source Sqlite database does not accord with the confidentiality required by the geographic data in the prior art is solved, and the technical effects of automatically encrypting the Sqlite image tiles, preventing the geographic data from being stealed and providing map image service for users free are further achieved.
The foregoing description is only an overview of the technical solutions of the present invention, and the embodiments of the present invention are described below in order to make the technical means of the present invention more clearly understood and to make the above and other objects, features, and advantages of the present invention more clearly understandable.
Drawings
Fig. 1 is a schematic flowchart illustrating an encryption method for free map image data according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of an encryption apparatus for free map image data according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of another encryption apparatus for free map image data according to an embodiment of the present invention.
Description of reference numerals: a first obtaining unit 11, a second obtaining unit 12, a first storage unit 13, a first encryption unit 14, a first decryption unit 15, a first distribution unit 16, a bus 300, a receiver 301, a processor 302, a transmitter 303, a memory 304, and a bus interface 306.
Detailed Description
The embodiment of the invention provides a method and a device for encrypting free map image data, which solve the technical problem that in the prior art, an open source Sqlite database does not meet the confidentiality required by geographic data and is easy to steal.
In order to solve the technical problems, the technical scheme provided by the invention has the following general idea: obtaining a map image to be encrypted; obtaining a plurality of image tiles according to the map image to be encrypted; storing the number of image tiles in a Sqlite database; encrypting the Sqlite database; decrypting the encrypted Sqlite database; and releasing the decrypted Sqlite database. The encryption is carried out by adding the account number password to each image tile, so that the technical effects of automatically encrypting the Sqlite image tiles, preventing geographic data from being stolen and providing map image services for users free are achieved.
The technical solutions of the present invention are described in detail below with reference to the drawings and the specific embodiments, and it should be understood that the specific features in the embodiments and the embodiments of the present invention are not intended to limit the technical solutions of the present invention, but may be combined with each other without conflict.
Example one
Fig. 1 is a schematic flow chart illustrating an encryption method for free map image data according to an embodiment of the present invention, as shown in fig. 1, the method includes:
step 110: obtaining a map image to be encrypted;
step 120: obtaining a plurality of image tiles according to the map image to be encrypted;
further, the obtaining a plurality of image tiles according to the map image to be encrypted includes:
obtaining the range of the map image to be encrypted; and slicing the map image to be encrypted into a plurality of image tiles according to the range of the map image to be encrypted.
Specifically, the embodiment of the present invention finds some free map sources and obtains a map image to be encrypted from the map sources, where the map image to be encrypted has a certain geographic range, and the map image to be encrypted is sliced into a plurality of square image tiles of the same size by using gis slicing software according to the range of the map image to be encrypted, that is, within the range of the height and the width of the map image to be encrypted, thereby achieving the technical effect of obtaining the free image tiles.
Step 130: storing the number of image tiles in a Sqlite database;
further, the storing the number of image tiles into a Sqlite database includes: generating a storage path file corresponding to the plurality of image tiles according to the range of the map image to be encrypted, wherein the format of the storage path file is a row number, a column number and a level number; storing the number of image tiles into the Sqlite database according to the save path file.
Specifically, since the image tiles are cut from left to right and from top to bottom in the map image range to be encrypted, the image tiles are divided into square image tiles of the same size (for example, 256 × 256 pixels) to form an image tile matrix of level 0; on the basis of the 0 th level image tile, generating a 1 st level image tile by a method of synthesizing one pixel by every 2x2 pixels, partitioning the image tile, and dividing the image tile into square map tiles with the same size as the next level to form a 1 st level image tile matrix; the same method is adopted to generate the level 2 image tile matrix … …, and so on until the nth level 1 constitutes the whole image tile pyramid, so that when each image tile is stored in the Sqlite database, a corresponding storage path file is generated for the Sqlite file storing each image tile, wherein the format of the storage path file is row number, column number and level number, which indicates that a certain image tile is stored in a certain row and a certain column of a certain level, so that the uniqueness of the storage location of each image tile is determined, and finally, according to the storage path file, a plurality of image tiles are sequentially stored in the Sqlite database, thereby achieving the technical effect of storing image tiles.
Step 140: encrypting the Sqlite database;
further, the encrypting the Sqlite database includes: adding an account number to the Sqlite database; and setting a password according to the account, wherein the password and the account are in a one-to-one correspondence relationship.
Specifically, because the data in the open-source Sqlite database does not have confidentiality, which is not in accordance with the confidentiality principle required by geographic data, and is easy to steal, the embodiment of the invention encrypts each image tile in a manner of adding an account and a password, wherein the account and the password of the image tile are in one-to-one correspondence, so that the purpose of encrypting the Sqlite database is achieved, and the danger of stealing map data is avoided.
Step 150: decrypting the encrypted Sqlite database;
further, the decrypting the encrypted Sqlite database includes: obtaining the legal identity authentication of the user according to the account and the corresponding password; obtaining a decryption key of the encrypted Sqlite database; and decrypting the encrypted Sqlite database according to the decryption key.
Specifically, after the image tiles in the Sqlite database are encrypted, decryption needs to be performed before the image tiles are used, firstly, after a decryption request is sent to a system, legal identity authentication of a user is obtained in a mode of inputting an account number and a password, a decryption key of the encrypted Sqlite database is obtained after the identity authentication is passed, and the technical effect of decrypting the Sqlite database is achieved through the decryption key.
Step 160: and releasing the decrypted Sqlite database.
Further, the publishing the decrypted Sqlite database includes: setting an external interface for the decrypted Sqlite database; and issuing the decrypted Sqlite database through the external interface.
Specifically, after the image tiles of the Sqlite database are decrypted, an external interface is arranged on the decrypted Sqlite database, a service issuing program is registered in a tomcat server, the tomcat is operated to issue the decrypted Sqlite database as a standard OGC map service, and finally the image tiles are loaded and presented to a user on a terminal platform.
Example two
Based on the same inventive concept as the encryption method of the free map image data in the foregoing embodiment, the present invention further provides an encryption apparatus of the free map image data, as shown in fig. 2, the apparatus includes:
a first obtaining unit 11, where the first obtaining unit 11 is configured to obtain a map image to be encrypted;
a second obtaining unit 12, where the second obtaining unit 12 is configured to obtain a plurality of image tiles according to the map image to be encrypted;
a first storage unit 13, the first storage unit 13 being configured to store the number of image tiles into a Sqlite database;
a first encryption unit 14, the first encryption unit 14 being configured to encrypt the Sqlite database;
a first decryption unit 15, the first decryption unit 15 being configured to decrypt the encrypted Sqlite database;
a first distribution unit 16, said first distribution unit 16 being configured to distribute the decrypted Sqlite database.
Further, the second obtaining unit 12 includes:
a third obtaining unit, configured to obtain a range of the map image to be encrypted;
the first slicing unit is used for slicing the map image to be encrypted into a plurality of image tiles according to the range of the map image to be encrypted.
Further, the first storage unit 13 includes:
a first generating unit, configured to generate a saved path file corresponding to the plurality of image tiles according to the range of the map image to be encrypted, where the saved path file is in a format of a row number, a column number, and a level number;
a second storage unit, configured to store the number of image tiles into the Sqlite database according to the save path file.
Further, the first encryption unit 14 includes:
a first adding unit, configured to add an account to the Sqlite database;
the first setting unit is used for setting a password according to the account, wherein the password and the account are in a one-to-one correspondence relationship.
Further, the first decryption unit 15 includes:
a fourth obtaining unit, configured to obtain a legal identity authentication of the user according to the account and the corresponding password;
a fifth obtaining unit configured to obtain a decryption key of the encrypted Sqlite database;
and the second decryption unit is used for decrypting the encrypted Sqlite database according to the decryption key.
Further, the first issue unit 16 includes:
a second setting unit configured to set an external interface to the decrypted Sqlite database;
a second distribution unit, configured to distribute the decrypted Sqlite database through the external interface.
Various variations and specific examples of the encryption method for free map image data in the first embodiment of fig. 1 are also applicable to the encryption device for free map image data in the present embodiment, and through the detailed description of the encryption method for free map image data, those skilled in the art can clearly know the implementation method for the encryption device for free map image data in the present embodiment, so for the brevity of the description, detailed descriptions are omitted here.
EXAMPLE III
Based on the same inventive concept as the encryption method of free map image data in the foregoing embodiments, the present invention also provides an encryption apparatus of free map image data, on which a computer program is stored, which when executed by a processor, implements the steps of any one of the aforementioned encryption methods of free map image data.
Where in fig. 3 a bus architecture (represented by bus 300), bus 300 may include any number of interconnected buses and bridges, bus 300 linking together various circuits including one or more processors, represented by processor 302, and memory, represented by memory 304. The bus 300 may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. A bus interface 306 provides an interface between the bus 300 and the receiver 301 and transmitter 303. The receiver 301 and the transmitter 303 may be the same element, i.e., a transceiver, providing a means for communicating with various other apparatus over a transmission medium.
The processor 302 is responsible for managing the bus 300 and general processing, and the memory 304 may be used for storing data used by the processor 302 in performing operations.
Example four
Based on the same inventive concept as the encryption method of free map image data in the foregoing embodiments, the present invention also provides a computer-readable storage medium having a computer program stored thereon, which when executed by a processor, implements the steps of:
obtaining a map image to be encrypted; obtaining a plurality of image tiles according to the map image to be encrypted; storing the number of image tiles in a Sqlite database; encrypting the Sqlite database; decrypting the encrypted Sqlite database; and releasing the decrypted Sqlite database.
In a specific implementation, when the program is executed by a processor, any method step in the first embodiment may be further implemented.
One or more technical solutions in the embodiments of the present invention at least have one or more of the following technical effects:
the embodiment of the invention provides a method and a device for encrypting free map image data, wherein the method comprises the following steps: obtaining a map image to be encrypted; obtaining a plurality of image tiles according to the map image to be encrypted; storing the number of image tiles in a Sqlite database; encrypting the Sqlite database; decrypting the encrypted Sqlite database; and releasing the decrypted Sqlite database. The encryption is carried out by adding the account number password to each image tile, so that the technical problem that the open source Sqlite database is easy to steal because the open source Sqlite database does not accord with the confidentiality required by the geographic data in the prior art is solved, and the technical effects of automatically encrypting the Sqlite image tiles, preventing the geographic data from being stealed and providing map image service for users free are further achieved.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (9)
1. A method for encrypting free map image data, the method comprising:
obtaining a map image to be encrypted;
obtaining a plurality of image tiles according to the map image to be encrypted;
storing the number of image tiles in a Sqlite database;
encrypting the Sqlite database;
decrypting the encrypted Sqlite database;
and releasing the decrypted Sqlite database.
2. The method of claim 1, wherein obtaining a number of image tiles from the map image to be encrypted comprises:
obtaining the range of the map image to be encrypted;
and slicing the map image to be encrypted into a plurality of image tiles according to the range of the map image to be encrypted.
3. The method of claim 1, wherein storing the number of image tiles in a Sqlite database comprises:
generating a storage path file corresponding to the plurality of image tiles according to the range of the map image to be encrypted, wherein the format of the storage path file is a row number, a column number and a level number;
storing the number of image tiles into the Sqlite database according to the save path file.
4. The method of claim 1, wherein the encrypting the Sqlite database comprises:
adding an account number to the Sqlite database;
and setting a password according to the account, wherein the password and the account are in a one-to-one correspondence relationship.
5. The method of claim 1, wherein decrypting the encrypted Sqlite database comprises:
obtaining the legal identity authentication of the user according to the account and the corresponding password;
obtaining a decryption key of the encrypted Sqlite database;
and decrypting the encrypted Sqlite database according to the decryption key.
6. The method of claim 1, wherein publishing the decrypted Sqlite database comprises:
setting an external interface for the decrypted Sqlite database;
and issuing the decrypted Sqlite database through the external interface.
7. An apparatus for encrypting free map image data, the apparatus comprising:
the first obtaining unit is used for obtaining a map image to be encrypted;
a second obtaining unit, configured to obtain a plurality of image tiles according to the map image to be encrypted;
a first storage unit to store the number of image tiles into a Sqlite database;
a first encryption unit to encrypt the Sqlite database;
a first decryption unit for decrypting the encrypted Sqlite database;
a first publishing unit, configured to publish the decrypted Sqlite database.
8. An encryption device for free map image data, comprising a memory, a processor and a computer program stored on the memory and operable on the processor, wherein the processor implements the following steps when executing the program:
obtaining a map image to be encrypted;
obtaining a plurality of image tiles according to the map image to be encrypted;
storing the number of image tiles in a Sqlite database;
encrypting the Sqlite database;
decrypting the encrypted Sqlite database;
and releasing the decrypted Sqlite database.
9. A computer-readable storage medium, on which a computer program is stored, which program, when executed by a processor, carries out the steps of:
obtaining a map image to be encrypted;
obtaining a plurality of image tiles according to the map image to be encrypted;
storing the number of image tiles in a Sqlite database;
encrypting the Sqlite database;
decrypting the encrypted Sqlite database;
and releasing the decrypted Sqlite database.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911101679.2A CN110851849A (en) | 2019-11-12 | 2019-11-12 | Encryption method and device for free map image data |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911101679.2A CN110851849A (en) | 2019-11-12 | 2019-11-12 | Encryption method and device for free map image data |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110851849A true CN110851849A (en) | 2020-02-28 |
Family
ID=69601657
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911101679.2A Pending CN110851849A (en) | 2019-11-12 | 2019-11-12 | Encryption method and device for free map image data |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110851849A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116680725A (en) * | 2023-07-27 | 2023-09-01 | 天津市测绘院有限公司 | Encryption and decryption method and system for ArcGIS compact map tiles |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104158947A (en) * | 2014-07-30 | 2014-11-19 | 张剑文 | Mobile phone privacy protecting system |
| CN104766018A (en) * | 2014-01-06 | 2015-07-08 | 厦门雅迅网络股份有限公司 | Mapinfo map encrypting and decrypting method |
| CN105447398A (en) * | 2014-08-15 | 2016-03-30 | 阿里巴巴集团控股有限公司 | Data safety protection method and device |
| CN106844537A (en) * | 2016-12-30 | 2017-06-13 | 重庆知行地理信息咨询服务有限公司 | A kind of organization and management method of space-time map tile data |
| CN107423631A (en) * | 2016-05-23 | 2017-12-01 | 上海神计信息系统工程有限公司 | A kind of database encipher-decipher method and device |
| US9940474B1 (en) * | 2015-09-29 | 2018-04-10 | Amazon Technologies, Inc. | Techniques and systems for data segregation in data storage systems |
| US20180301111A1 (en) * | 2015-06-08 | 2018-10-18 | Samsung Electronics Co., Ltd. | Electronic device and method for displaying electronic map in electronic device |
| CN108985096A (en) * | 2018-07-13 | 2018-12-11 | 厦门市美亚柏科信息股份有限公司 | A kind of enhancing of Android SQLite database security, method for safely carrying out and device |
| CN109492060A (en) * | 2018-09-28 | 2019-03-19 | 湖南国科图创信息科技有限公司 | A kind of map tile storage method based on MBTiles |
| CN109934892A (en) * | 2019-03-22 | 2019-06-25 | 河南思维轨道交通技术研究院有限公司 | Inertial navigation motion profile method for drafting, device and computer equipment |
| CN110059143A (en) * | 2019-03-04 | 2019-07-26 | 中国电子科技集团公司第二十七研究所 | A kind of method for drawing map based on remote sensing image tile data |
-
2019
- 2019-11-12 CN CN201911101679.2A patent/CN110851849A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104766018A (en) * | 2014-01-06 | 2015-07-08 | 厦门雅迅网络股份有限公司 | Mapinfo map encrypting and decrypting method |
| CN104158947A (en) * | 2014-07-30 | 2014-11-19 | 张剑文 | Mobile phone privacy protecting system |
| CN105447398A (en) * | 2014-08-15 | 2016-03-30 | 阿里巴巴集团控股有限公司 | Data safety protection method and device |
| US20180301111A1 (en) * | 2015-06-08 | 2018-10-18 | Samsung Electronics Co., Ltd. | Electronic device and method for displaying electronic map in electronic device |
| US9940474B1 (en) * | 2015-09-29 | 2018-04-10 | Amazon Technologies, Inc. | Techniques and systems for data segregation in data storage systems |
| CN107423631A (en) * | 2016-05-23 | 2017-12-01 | 上海神计信息系统工程有限公司 | A kind of database encipher-decipher method and device |
| CN106844537A (en) * | 2016-12-30 | 2017-06-13 | 重庆知行地理信息咨询服务有限公司 | A kind of organization and management method of space-time map tile data |
| CN108985096A (en) * | 2018-07-13 | 2018-12-11 | 厦门市美亚柏科信息股份有限公司 | A kind of enhancing of Android SQLite database security, method for safely carrying out and device |
| CN109492060A (en) * | 2018-09-28 | 2019-03-19 | 湖南国科图创信息科技有限公司 | A kind of map tile storage method based on MBTiles |
| CN110059143A (en) * | 2019-03-04 | 2019-07-26 | 中国电子科技集团公司第二十七研究所 | A kind of method for drawing map based on remote sensing image tile data |
| CN109934892A (en) * | 2019-03-22 | 2019-06-25 | 河南思维轨道交通技术研究院有限公司 | Inertial navigation motion profile method for drafting, device and computer equipment |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116680725A (en) * | 2023-07-27 | 2023-09-01 | 天津市测绘院有限公司 | Encryption and decryption method and system for ArcGIS compact map tiles |
| CN116680725B (en) * | 2023-07-27 | 2023-10-13 | 天津市测绘院有限公司 | Encryption and decryption method and system for ArcGIS compact map tiles |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109697365B (en) | Information processing method, block chain node and electronic equipment | |
| CN107948152B (en) | Information storage method, information acquisition method, information storage device, information acquisition device and information acquisition equipment | |
| US8977857B1 (en) | System and method for granting access to protected information on a remote server | |
| CN113472720B (en) | Digital certificate key processing method, device, terminal equipment and storage medium | |
| US10686612B2 (en) | Cryptographic data | |
| CN111132150A (en) | Method and device for protecting data, storage medium and electronic equipment | |
| CN111695097A (en) | Login checking method and device and computer readable storage medium | |
| CN109408486B (en) | File distribution method and system, distribution server and file generation device | |
| US10817596B2 (en) | Image based authentication code method, server, and authentication code system | |
| CN104917748A (en) | Method and device for performing conversion and processing on password information | |
| US20130283043A1 (en) | Method and apparatus for authorization updating | |
| CN113438205A (en) | Block chain data access control method, node and system | |
| JP7068826B2 (en) | Enhanced obfuscation or randomization for secure product identification and verification | |
| CN110855441B (en) | Method, device and equipment for authenticating electronic identity and storage medium | |
| US11456878B2 (en) | Apparatus and method for managing pseudonym certificates and preventing tracking thereof | |
| CN110851849A (en) | Encryption method and device for free map image data | |
| CN111818087B (en) | Block chain node access method, device, equipment and readable storage medium | |
| CN111628863B (en) | Data signature method and device, electronic equipment and storage medium | |
| EP2784973A1 (en) | Method, system, and device for digital content transmission | |
| CN116366289A (en) | Safety supervision method and device for remote sensing data of unmanned aerial vehicle | |
| EP3270562B1 (en) | A method of generating multiple identifications with multi-level security for network-connected devices | |
| CN112367302B (en) | Identity authentication method and system suitable for chrome browser | |
| US20230123579A1 (en) | Access authorization utilizing homomorphically encrypted access authorization objects | |
| CN111934882B (en) | Identity authentication method and device based on block chain, electronic equipment and storage medium | |
| CN113221141A (en) | Wallet encryption storage method, signature method, computer device and storage medium |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200228 |