CN103235906A - Method and device for encrypting and decrypting application program - Google Patents
Method and device for encrypting and decrypting application program Download PDFInfo
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- CN103235906A CN103235906A CN2013101021617A CN201310102161A CN103235906A CN 103235906 A CN103235906 A CN 103235906A CN 2013101021617 A CN2013101021617 A CN 2013101021617A CN 201310102161 A CN201310102161 A CN 201310102161A CN 103235906 A CN103235906 A CN 103235906A
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- 238000013478 data encryption standard Methods 0.000 description 7
- 230000000644 propagated effect Effects 0.000 description 5
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Abstract
The invention is suitable for the technical field of mobile terminals and provides a method and device for encrypting and decrypting an application program. The method comprises the steps as follows: obtaining an application program installation package comprising an encrypted installation file, a mobile terminal identifier and a key; obtaining the mobile terminal identifier; and when the obtained mobile terminal identifier is the same as that in a key file, decrypting the encrypted installation file in the application program installation package according to the preset algorithm and the key. According to the embodiment of the invention, the encrypted installation file in the application program installation package is decrypted according to the preset algorithm and the key only when the obtained mobile terminal identifier is the same as that in the key file, so that the problem of arbitrary transmission of the application program is solved, the customizers and the fee collectors of the application program are prevented from suffering a loss, and the potential safety hazard caused by arbitrary transmission of the application program is avoided.
Description
Technical field
The invention belongs to technical field of mobile terminals, relate in particular to a kind of application program encryption, decryption method and encryption, decryption device.
Background technology
Along with the portable terminal arrival in intelligent epoch, the configuration of portable terminal from strength to strength, function is more and more complete, the application program that is applicable to portable terminal also is multifarious, increasing, installing of the application program that the user can like by network download oneself also can be installed by propagating application program between the user mutually, experiences with the intellectuality of enjoying portable terminal.
Yet, owing to lack the restriction of any propagation of application programs in the prior art, cause the customization merchant of application program and charge merchant to sustain a loss, be unfavorable for the sound development of application program industry.For ease of explanation, be Android application program installation kit (Android Package with the new installation kit of application program, APK) be example, because Android does not support the apk encryption and decryption, the user has downloaded software at Android Android software store, owing to onlinely can propagate arbitrarily without permission down, thereby cause certain loss for the customization merchant of this software and charge merchant, therefore the potential safety hazard for any propagation existence of application program can not be ignored.
Summary of the invention
The purpose of the embodiment of the invention is to provide a kind of application program encryption method, is intended to solve the restriction that lacks any propagation of application programs in the prior art, causes the customization merchant of application program and the problem that the charge merchant sustains a loss.
The embodiment of the invention is achieved in that a kind of decryption method of application program, comprising:
Obtain the application program installation kit, comprise installation file, mobile terminal identification and the key of encryption in the described application program installation kit;
Obtain mobile terminal identification;
When the mobile terminal identification of obtaining is consistent with mobile terminal identification in the described key file, according to the installation file of encrypting in preset algorithm and the described application program installation kit of described secret key decryption.
Another purpose of the embodiment of the invention is to provide a kind of application program encryption method, comprising:
The application program that mobile terminal receive sends is obtained request, and the request of obtaining of described application program comprises mobile terminal identification and application program identification;
According to preset algorithm and the key that generates in real time the installation file of described application program identification corresponding application program is encrypted the installation file that obtains encrypting;
Installation file, described mobile terminal identification and the described key encrypted are packaged into the application program installation kit.
Another purpose of the embodiment of the invention is to provide a kind of application program decryption device, comprising:
First acquiring unit is used for obtaining the application program installation kit, comprises installation file, mobile terminal identification and the key of encryption in the described application program installation kit;
Second acquisition unit obtains mobile terminal identification;
Decryption unit is when the mobile terminal identification of obtaining is consistent with mobile terminal identification in the described key file, according to the installation file of encrypting in preset algorithm and the described application program installation kit of described secret key decryption.
Another purpose of the embodiment of the invention is to provide a kind of application program encryption device, comprising:
Receiving element, the application program that is used for the mobile terminal receive transmission is obtained request, and the request of obtaining of described application program comprises mobile terminal identification and application program identification;
Ciphering unit is used for according to preset algorithm and the key that generates in real time the installation file of described application program identification corresponding application program being encrypted the installation file that obtains encrypting;
Acquiring unit, the installation file, described mobile terminal identification and the described key that are used for encrypting are packaged into the application program installation kit.
In embodiments of the present invention, obtain mobile terminal identification, have only when the mobile terminal identification of obtaining is consistent with mobile terminal identification in the key file, just according to the encryption installation file in preset algorithm and the new installation kit of the described application program of secret key decryption, even other portable terminal gets access to the new installation kit of application program, because self device identification and the device identification in the Encryption key file are inconsistent, can't be according to the encryption installation file in the secret key decryption application program installation kit, can not finish the installation of application programs, thereby solved the problem of any propagation of application program, avoided the customization merchant of application program and the situation that the charge merchant sustains a loss, stopped application program and propagated the potential safety hazard of bringing arbitrarily.
Description of drawings
Fig. 1 is the realization flow figure of the application program decryption method that provides of the embodiment of the invention;
Fig. 2 is the realization flow figure of the application program encryption method that provides of the embodiment of the invention;
Fig. 3 is the structured flowchart of the application program decryption device that provides of the embodiment of the invention;
Fig. 4 is the structured flowchart of the application program encryption device that provides of the embodiment of the invention.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explaining the present invention, and be not used in restriction the present invention.
In embodiments of the present invention, obtain mobile terminal identification, have only when the mobile terminal identification of obtaining is consistent with mobile terminal identification in the key file, just according to the encryption installation file in preset algorithm and the new installation kit of the described application program of secret key decryption, even other portable terminal gets access to the new installation kit of application program, because self device identification and the device identification in the Encryption key file are inconsistent, can't be according to the encryption installation file in the secret key decryption application program installation kit, can not finish the installation of application programs, thereby solved the problem of any propagation of application program, avoided the customization merchant of application program and the situation that the charge merchant sustains a loss, stopped application program and propagated the potential safety hazard of bringing arbitrarily.
Fig. 1 shows the realization flow of a kind of application program decryption method that the embodiment of the invention provides, and details are as follows:
In step S101, obtain the application program installation kit, comprise installation file, mobile terminal identification and the key of encryption in the described application program installation kit.
In the present embodiment, obtain the application program installation kit, specifically comprise: send application program to server and obtain request, the request of obtaining of described application program comprises mobile terminal identification and application program identification, so that server is encrypted according to the installation file of the key that generates in real time to described application program identification corresponding application program, the installation file that obtains encrypting is packaged into the application program installation kit with installation file, described mobile terminal identification and the described key of encrypting.
In the present embodiment, portable terminal sends to apps server by existing network and obtains request, and the request of obtaining comprises mobile terminal identification and application program identification.
In the present embodiment, mobile terminal identification is the physical label that possesses the portable terminal of this application program authority of operation.Mobile terminal identification includes but not limited to International Mobile Equipment Identity sign indicating number (International Mobile Equipment Identity, IMEI), international mobile subscriber identity (International Mobile Subscriber Identification Number, IMSI), mobile terminal identification number (Mobile Equipment Identifier, MEID).
In the present embodiment, application program identification includes but not limited to application name, application icon and application name and the combination of application program image target.
In the present embodiment, obtain the application program identification of application program, can show the application program that portable terminal is installed at the interface of portable terminal, because application program is many, can be by draw a chart at the interface, with the function of the application program classification sign as the application program that satisfies condition, can check all application programs that satisfy same function according to sorting out sign, so that the operation that the user chooses.
In the present embodiment, the application program of user's appointment in this application list, the mode of appointment include but not limited to touch or button, by the operation detection of choosing to the user, receive user's the result that chooses.
In the present embodiment, receive the user choose the result after, the broadcast message in the monitoring system is obtained customer specific application program, the resource file by application program obtains application program identification simultaneously.
In step S102, obtain mobile terminal identification.
In the present embodiment, obtain mobile terminal identification, the interface of bottom parameter that can be by mobile terminal system obtains, and obtaining mobile terminal identification is prior art, and specific implementation process is not done at this and given unnecessary details.Apps server sends to apps server by mobile terminal identification, so that can be identified different mobile devices by mobile terminal identification.
In step S103, when the mobile terminal identification of obtaining is consistent with mobile terminal identification in the described key file, according to the installation file of encrypting in preset algorithm and the described application program installation kit of described secret key decryption.
In the present embodiment, according to the installation file of encrypting in preset algorithm and the described application program installation kit of secret key decryption, the method for preset algorithm comprises but does not limit DES(Data Encryption Standard) algorithm, AES(Advanced Encryption Standard), RSA Algorithm, cubic password, replace enciphered method, transposition enciphered method, three fens cipher code methods etc.Preferably, employing is decrypted Encryption key file with the corresponding decryption method of apps server preset algorithm.
For ease of explanation, be example with the practical application, DES algorithm and key in apps server employing symmetric encipherment algorithm, the installation file in the application programs installation kit is encrypted, and generates the installation file of encrypting.After portable terminal receives the application program installation kit, the application programs installation kit is resolved, the installation file of encrypting in the program that the is applied installation kit, mobile terminal identification and key, it is right to test by mobile terminal identification and the mobile terminal identification of obtaining self, when testing when passing through, adopt algorithm for inversion and the key of DES algorithm, the installation file of enabling decryption of encrypted, obtain the unencrypted installation file, so that portable terminal can be according to the unencrypted installation file, finish the installation of application programs, thereby avoided occurring the situation of any propagation of application program, even other portable terminal gets access to the application program installation kit, because self mobile terminal identification and the mobile terminal identification in the application program installation kit are inconsistent, can't be according to the installation file of the encryption in the secret key decryption application program installation kit, therefore can't install and use this application program, thereby solved the problem of any propagation of application program, avoided the customization merchant of application program and the situation that the charge merchant sustains a loss, stopped application program and propagated the potential safety hazard of bringing arbitrarily.
As a preferred embodiment of the present invention, described according to the installation file of encrypting in preset algorithm and the described application program encryption of the described secret key decryption installation kit, be specially:
Installation file according to the appointment of encrypting in described preset algorithm and the described application program installation kit of described secret key decryption.
In the present embodiment, the installation file of the appointment of encryption is encrypted the installation file generation of appointment by apps server.When user's application programs was installed, because apps server has only been encrypted the installation file of appointment in the application program installation kit, so portable terminal only needed the installation file of appointment is decrypted.
For ease of explanation, the operating system that adopts with portable terminal is that the Android system is example, when user's application programs is installed, PackageManagerService in the Android system can resolve the Android application program installation kit of this application program, because apps server has only been encrypted AndroidManifest.xml in this Android application program installation kit, therefore the Android system only need be decrypted AndroidManifest.xml, to get access to unencrypted AndroidManifest.xml.When getting access to unencrypted AndroidManifest.xml, parse information among the unencrypted AndroidManifest.xml by PackageManagerService, all Android information with its inside, comprise module information, authority information etc., according to the normal flow reading and saving of Android, for system queries, call etc.Because said process is when resolving the AndroidManifest.xml that encrypts, only it need be deciphered, do not change the mechanism of existing Android system analysis Android application program installation kit, therefore the method for this deciphering has favorable compatibility in the Android system, can guarantee to encrypt the normal operation of Android application program installation kit by normal flow reading and saving Android application program installation kit.
Fig. 2 shows the realization flow of a kind of application program encryption method that the embodiment of the invention provides, and details are as follows:
In step S201, the application program that mobile terminal receive sends is obtained request, and the request of obtaining of described application program comprises mobile terminal identification and application program identification.
In the present embodiment, the request of obtaining that apps server sends by existing network mobile terminal receive is obtained information requested and is carried out descrambling carrying, and parses mobile terminal identification and application program identification in the request of obtaining.
In the present embodiment, mobile terminal identification is the physical label that possesses the portable terminal of this application program authority of operation.Mobile terminal identification includes but not limited to International Mobile Equipment Identity sign indicating number (International Mobile Equipment Identity, IMEI), international mobile subscriber identity (International Mobile Subscriber Identification Number, IMSI), mobile terminal identification number (Mobile Equipment Identifier, MEID).
In step S202, according to preset algorithm and the key that generates in real time the installation file of described application program identification corresponding application program is encrypted the installation file that obtains encrypting.
In the present embodiment, the generating mode of key, any one method that can also adopt present technology to provide, as generating at random by key generator, also can adopt default update strategy that default key is carried out more newly-generated key, update strategy comprises every the default key of Preset Time random replacing, every Preset Time, just randomly draws the character string of predetermined length as default key in character.
In the present embodiment, be encrypted according to preset algorithm and the key that generates the in real time installation file to described application program identification corresponding application program, the installation file that obtains encrypting, the method of preset algorithm comprises but does not limit data encryption standard algorithm (Data Encryption Standard, DES), Advanced Encryption Standard (Advanced Encryption Standard, AES), RSA Algorithm, cubic password, replace enciphered method, transposition enciphered method, three fens cipher code methods etc.Particularly, employing is encrypted the installation file that obtains encrypting with the corresponding encryption method of apps server preset algorithm to installation file.
In the present embodiment, obtain the installation file of the application program corresponding with application program identification, apps server is index with the application program identification, in the database of the storage application program installation kit corresponding with application program identification, inquiry reports obtains the corresponding application program installation kit of application program identification in the request, with obtaining of the installation file of finishing the corresponding application program of application program identification.
As a preferred embodiment of the present invention, apps server is according to application program identification, inquiry is obtained application program in the request whether in the application list to be encrypted of setting up in advance, and the application list to be encrypted comprises needs the encrypted applications program.The application program corresponding with application program identification in inquiring the request of obtaining is in the application list to be encrypted of setting up in advance the time, and the installation file of the application program that the application programs sign is corresponding is encrypted.Thereby apps server can be according to the sign of application program, identification needs the installation file of encrypted applications program, the situation of having avoided the installation file to all application programs to be encrypted, reduced the execution thread of apps server, save apps server and sent feedback information to the time of portable terminal, thereby improved the operational efficiency that the installation file to described application program identification corresponding application program is encrypted.
In step S203, installation file, described mobile terminal identification and the described key of encrypting is packaged into the application program installation kit.
In the present embodiment, by default installation kit form, installation file, described mobile terminal identification and the described key of encrypting is packaged into the application program installation kit.The installation kit form includes but not limited to APK, SIS, SISX, JAD, JAR, RAR, EXE, DEB, IPA, PXL etc.
As a preferred embodiment of the present invention, the key that described basis generates in real time is encrypted the installation file of described application program identification corresponding application program, and the installation file that obtains encrypting is specially:
According to the key of real-time generation the installation file of the appointment of described application program identification corresponding application program is encrypted the installation file of the appointment that obtains encrypting.
In the present embodiment, be encrypted according to the key of the real-time generation installation file to the appointment of described application program identification corresponding application program, can extract the character of the installation file of appointment earlier, the character that obtains encrypting, again encapsulation integrated in character with the former form of this installation file again, generate the installation file of the appointment of encrypting.Thereby significantly reduced the encryption time, improved the efficient that generates the installation file of the appointment of encrypting.
For ease of explanation, be example with Android application program installation kit, comprise assets in the Android application program installation kit, res, the META-INF catalogue, classes.dex, resources.arsc, AndroidManifest.xml, because AndroidManifest.xml is the core document in the Android application program installation kit, lacked the installation that AndroidManifest.xml can't finish application program, therefore apps server can only be encrypted AndroidManifest.xml, apps server extracts the character string of the AndroidManifest.xml of appointment in the installation kit, secret key encryption character string according to real-time generation, again the character string of encrypting is repacked, generate the AndroidManifest.xml that encrypts fast.Thereby significantly reduced the encryption time, improved the efficient that generates the installation file of the appointment of encrypting.
As a preferred embodiment of the present invention, according to described mobile terminal identification and the real-time key production key parameter that generates, particularly, the key that can extract mobile terminal identification earlier and generate in real time, by preset rules new character string formed in the character in mobile terminal identification and the key, preset rules includes but not limited to that odd bits is that the character of mobile terminal identification and even bit are the character in the key, even bit is that the character of mobile terminal identification and odd bits are the character in the key, increases default interference code between the character in mobile terminal identification and key, increase default separator etc. between the character in mobile terminal identification and key.
For ease of explanation, be example with the practical application, when mobile terminal identification number is 013027007765728, the key that adopts is AA123, preset rules is that odd bits is the character of mobile terminal identification and even bit when being character in the key, and forming new character string is 0A1A3102237A0A0172736A5A712283.Thereby, even propagate mutually between the user, also can only get access to key parameter, even the user obtains the character in the key parameter, owing to and do not know preset order, therefore can't correctly extract the key of application program installation kit, can't finish the installation of application program, thereby further improved the security of application program, solved the problem of any propagation of application program better, avoided the customization merchant of application program and the situation that the charge merchant sustains a loss, stopped application program and propagated the potential safety hazard of bringing arbitrarily.
As an alternative embodiment of the invention, apps server adopts symmetric encipherment algorithm and predefined PKI, secret key encryption is generated encryption key, thereby in portable terminal, has only the client of having moved symmetric encipherment algorithm and predefined PKI, just can finish the deciphering to encryption key, improve the security of key, thereby further improved the security that the application program of charge is installed.
Fig. 3 shows the structured flowchart of the application program decryption device that the embodiment of the invention provides, this device can run on various terminals, include but not limited to mobile phone, pocket computing machine (Pocket Personal Computer, PPC), palm PC, computing machine, notebook computer, personal digital assistant (Personal Digital Assistant, PDA) etc.For convenience of explanation, only show the part relevant with present embodiment.
With reference to Fig. 3, this application program decryption device comprises:
First acquiring unit 31 is used for obtaining the application program installation kit, comprises installation file, mobile terminal identification and the key of encryption in the described application program installation kit.
Further, in this device, also comprise:
Transmitting element 34, be used for sending application program to server and obtain request, the request of obtaining of described application program comprises mobile terminal identification and application program identification, so that server is encrypted according to the installation file of the key that generates in real time to described application program identification corresponding application program, the installation file that obtains encrypting is packaged into the application program installation kit with installation file, described mobile terminal identification and the described key of encrypting.
Further, in this device, described decryption unit also is used for the installation file of the appointment of encrypting according to described preset algorithm and the described application program installation kit of described secret key decryption.
Fig. 4 shows the structured flowchart of the application program encryption device that the embodiment of the invention provides, this device can run on various terminals, include but not limited to mobile phone, pocket computing machine (Pocket Personal Computer, PPC), palm PC, computing machine, notebook computer, personal digital assistant (Personal Digital Assistant, PDA) etc.For convenience of explanation, only show the part relevant with present embodiment.
With reference to Fig. 4, this application program encryption device comprises:
Receiving element 41, the application program that is used for the mobile terminal receive transmission is obtained request, and the request of obtaining of described application program comprises mobile terminal identification and application program identification.
Ciphering unit 42 is used for being encrypted the installation file that obtains encrypting according to the installation file of preset algorithm and the real-time key application programs sign corresponding application program that generates.
Acquiring unit 43, the installation file, mobile terminal identification and the key that are used for encrypting are packaged into the application program installation kit.
Further, in this device, described decryption unit also is used for the installation file of the appointment of encrypting according to preset algorithm and secret key decryption application program installation kit.
In embodiments of the present invention, obtain mobile terminal identification, have only when the mobile terminal identification of obtaining is consistent with mobile terminal identification in the key file, just according to the encryption installation file in preset algorithm and the new installation kit of the described application program of secret key decryption, even other portable terminal gets access to the new installation kit of application program, because self device identification and the device identification in the Encryption key file are inconsistent, can't be according to the encryption installation file in the secret key decryption application program installation kit, can not finish the installation of application programs, thereby solved the problem of any propagation of application program, avoided the customization merchant of application program and the situation that the charge merchant sustains a loss, stopped application program and propagated the potential safety hazard of bringing arbitrarily.
The above only is preferred embodiment of the present invention, not in order to limiting the present invention, all any modifications of doing within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. an application program decryption method is characterized in that, comprising:
Obtain the application program installation kit, comprise installation file, mobile terminal identification and the key of encryption in the described application program installation kit;
Obtain mobile terminal identification;
When the mobile terminal identification of obtaining is consistent with mobile terminal identification in the described key file, according to the installation file of encrypting in preset algorithm and the described application program installation kit of described secret key decryption.
2. method as claimed in claim is characterized in that, the described application program installation kit that obtains specifically comprises:
Send application program to server and obtain request, the request of obtaining of described application program comprises mobile terminal identification and application program identification, so that server is encrypted according to the installation file of the key that generates in real time to described application program identification corresponding application program, the installation file that obtains encrypting is packaged into the application program installation kit with installation file, described mobile terminal identification and the described key of encrypting.
3. method as claimed in claim 1 or 2 is characterized in that, and is described according to the installation file of encrypting in preset algorithm and the described application program encryption of the described secret key decryption installation kit, is specially:
Installation file according to the appointment of encrypting in described preset algorithm and the described application program installation kit of described secret key decryption.
4. an application program encryption method is characterized in that, comprising:
The application program that mobile terminal receive sends is obtained request, and the request of obtaining of described application program comprises mobile terminal identification and application program identification;
According to the key of real-time generation the installation file of described application program identification corresponding application program is encrypted the installation file that obtains encrypting;
Installation file, described mobile terminal identification and the described key encrypted are packaged into the application program installation kit.
5. method as claimed in claim 4 is characterized in that, the key that described basis generates in real time is encrypted the installation file of described application program identification corresponding application program, and the installation file that obtains encrypting is specially:
According to the key of real-time generation the installation file of the appointment of described application program identification corresponding application program is encrypted the installation file of the appointment that obtains encrypting.
6. an application program decryption device is characterized in that, comprising:
First acquiring unit is used for obtaining the application program installation kit, comprises installation file, mobile terminal identification and the key of encryption in the described application program installation kit;
Second acquisition unit is used for obtaining mobile terminal identification;
Decryption unit is used for mobile terminal identification when the mobile terminal identification of obtaining and described key file when consistent, according to the installation file of encrypting in preset algorithm and the described application program installation kit of described secret key decryption.
7. device as claimed in claim 6 is characterized in that, also comprises:
Transmitting element, be used for sending application program to server and obtain request, the request of obtaining of described application program comprises mobile terminal identification and application program identification, so that server is encrypted according to the installation file of the key that generates in real time to described application program identification corresponding application program, the installation file that obtains encrypting is packaged into the application program installation kit with installation file, described mobile terminal identification and the described key of encrypting.
8. device as claimed in claim 6 is characterized in that, described decryption unit also is used for the installation file of the appointment of encrypting according to described preset algorithm and the described application program installation kit of described secret key decryption.
9. an application program encryption device is characterized in that, comprising:
Receiving element, the application program that is used for the mobile terminal receive transmission is obtained request, and the request of obtaining of described application program comprises mobile terminal identification and application program identification;
Ciphering unit is used for according to preset algorithm and the key that generates in real time the installation file of described application program identification corresponding application program being encrypted the installation file that obtains encrypting;
Acquiring unit, the installation file, described mobile terminal identification and the described key that are used for encrypting are packaged into the application program installation kit.
10. device as claimed in claim 9 is characterized in that, installation file, described mobile terminal identification and described key that described ciphering unit also is used for encrypting are packaged into the application program installation kit.
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| CN108446161B (en) * | 2018-02-06 | 2022-03-18 | 海能达通信股份有限公司 | Method and device for running application program in virtual machine environment |
| CN108446161A (en) * | 2018-02-06 | 2018-08-24 | 海能达通信股份有限公司 | The method and device of application program is run under virtual machine environment |
| CN109165029A (en) * | 2018-08-27 | 2019-01-08 | 北京奇虎科技有限公司 | Realize method, server and the device of downloading-running payment applications |
| CN109816389A (en) * | 2018-12-03 | 2019-05-28 | 深圳市新国都支付技术有限公司 | A kind of POS machine signature verification method and system |
| WO2020253469A1 (en) * | 2019-06-20 | 2020-12-24 | 京东方科技集团股份有限公司 | Hot update method and apparatus for script file package |
| US11797296B2 (en) | 2019-06-20 | 2023-10-24 | Boe Technology Group Co., Ltd. | Hot updating method of script file package and hot updating device of script file package |
| CN111885047A (en) * | 2020-07-21 | 2020-11-03 | 黑芝麻智能科技(重庆)有限公司 | Method for terminal to acquire data, method for terminal to access data and terminal |
| US11550932B2 (en) | 2020-07-21 | 2023-01-10 | Black Sesame Technologies Inc. | Method for a terminal to acquire and access data |
| CN112052018A (en) * | 2020-09-09 | 2020-12-08 | 北京文香信息技术有限公司 | Application program installation method and device |
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Address after: Changan town in Guangdong province Dongguan 523860 usha Beach Road No. 18 Patentee after: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS Corp.,Ltd. Address before: Changan town in Guangdong province Dongguan 523841 usha Beach Road No. 18 Patentee before: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS Corp.,Ltd. |
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