CN104021320A - Method, device and system for protecting copyrights of APK files - Google Patents
Method, device and system for protecting copyrights of APK files Download PDFInfo
- Publication number
- CN104021320A CN104021320A CN201410277365.9A CN201410277365A CN104021320A CN 104021320 A CN104021320 A CN 104021320A CN 201410277365 A CN201410277365 A CN 201410277365A CN 104021320 A CN104021320 A CN 104021320A
- Authority
- CN
- China
- Prior art keywords
- apk file
- file
- apk
- encrypting
- data field
- 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
- 238000000034 method Methods 0.000 title claims abstract description 25
- 238000009434 installation Methods 0.000 claims description 17
- 238000010586 diagram Methods 0.000 description 8
- 230000006837 decompression Effects 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
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
- G06F21/10—Protecting distributed programs or content, e.g. vending or licensing of copyrighted material ; Digital rights management [DRM]
- G06F21/12—Protecting executable software
- G06F21/121—Restricting unauthorised execution of programs
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2221/00—Indexing scheme relating to security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F2221/21—Indexing scheme relating to G06F21/00 and subgroups addressing additional information or applications relating to security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F2221/2107—File encryption
Abstract
The invention discloses a method for protecting copyrights of APK files. The method comprises the steps that a submitting end is used for encrypting central catalogue data areas in the APK files; a user side receives the APK files; the user side decrypts the encrypted central catalogue data areas in the APK files; the user side installs the APK files. Correspondingly, the invention further discloses a system for protecting the copyrights of the APK files, a device for encrypting the APK files and a device for encrypting the APK files. According to the technical scheme, the APK files on special equipment of a manufacturer can be effectively prevented from being led out and installed and used on other equipment, the copyrights of the APK files are protected, and the service provided by the application is further protected.
Description
Technical field
The present invention relates to the encryption and decryption field of application program, relate more specifically to a kind of methods, devices and systems of the APK of protection file copyright.
Background technology
Current, along with the develop rapidly of electronic technology, from work, study to amusement and recreation, the every aspect of people's daily life is occupied by all kinds of mobile intelligent terminals more and more.Android system is one of system that in current mobile intelligent terminal operating system, market share is relatively leading.
APK is the abbreviation of AndroidPackage, i.e. Android installation kit (apk).APK is the file layout of similar Symbian Sis or Sisx.By APK file directly being passed in Android simulator or Android mobile phone, carry out and can install.Apk file is the same with sis, and the engineering of android sdk compiling is packaged into an installation procedure file, and form is apk.APK file is zip form in fact, but suffix name is modified to apk, after UnZip decompress(ion), can see Dex file, Dex is the abbreviation of DalvikVM executes, i.e. Android Dalvik executive routine, the not bytecode of Java ME but Dalvik bytecode.First Android needs UnZip to separate press operation when a program of operation.
For Android system, some enterprise development is produced Android terminal device especially, and the Android equipment on market is a feast for the eyes, and the competition direction between businessman and businessman is mainly also for hardware aspect.If can provide exclusive service by equipment, the sale of equipment will be promoted greatly.Such as, enterprise develops a Android flat-panel devices for K12 student, cost huge fund is produced or is bought online education resource and makes the ecosphere, enterprise's advantage does not lie in Android flat-panel devices, but online education resource, flat board for student's customization can be used online education resource service specially, will greatly impel student to buy panel computer.Now, if the Android equipment of other manufacturers also can be used online education resource, so the flat board of this enterprise by without any advantage, so enterprise must stop.But current do not have a Copyright Protection that corresponding technical scheme can solve APK formatted file.
Summary of the invention
Based on this, the present inventor provides a kind of method of the APK of protection file copyright, comprises step:
Application submits to end to be encrypted the central directory data field in APK file;
User side receives described APK file;
User side is decrypted the central directory data field in encrypted APK file;
User side is installed described APK file.
Further, in the method for described protection APK file copyright, application submits to end to encrypt behind the central directory data field in APK file, also comprises a step:
Whether at the APK file after encrypting, add for distinguishing is the sign of encrypting APK file;
User side is downloaded after APK file, also comprises a step:
According to described sign, judge whether APK file is encrypt file, and be while encrypting APK file, to decipher the central directory data field in APK file at the described APK file of judgement.
Further, in the method for described protection APK file copyright, distinguish whether whether APK file is that the method for encrypting APK file is specially:
Application submits to the APK file front end of end after encryption to add a default GUID value;
User side first judges that whether described APK file front end is this default GUID value, is if so, decrypted the central directory data field in encrypted APK file after downloading APK file.
Further, in the method for described protection APK file copyright, the central directory data field algorithm used in described encryption APK file is symmetric encipherment algorithm.
Inventor also provides a kind of device of the APK of encryption file, comprises ciphering unit, for the central directory data field to APK file, is encrypted.
Whether further, in the device of described encryption APK file, also comprise identify unit, be the sign of encrypting APK file for add for distinguishing at encrypted APK file;
Whether described interpolation is that the sign of encrypting APK file specifically comprises for distinguishing:
Identify unit adds a default GUID value at the APK file front end after encrypting.
Inventor also provides a kind of device of the APK of deciphering file, comprises application download unit, decryption unit and installation unit;
Described application download unit is used for receiving APK file;
Described decryption unit is for being decrypted the central directory data field of encrypted APK file;
Described installation unit is used for installing described APK file.
Further, in the device of described deciphering APK file, decryption unit is also for judging according to a sign whether APK file is encrypt file, and deciphers the central directory data field in APK file when encrypting APK file at the described APK file of judgement;
A described default GUID value that is designated that APK file front end adds.
Inventor also provides a kind of system of the APK of protection file copyright, comprises application submission end and user side; Described application is submitted to end to comprise and ciphering unit is encrypted for the central directory data field to APK file;
User side comprises application download unit, decryption unit and installation unit;
Described application download unit is used for receiving APK file;
Described decryption unit is for being decrypted the central directory data field of encrypted APK file;
Described installation unit is used for installing described APK file.
Whether further, in the system of described protection APK file copyright, application submits to end also to comprise identify unit, for add for distinguishing at encrypted APK file, be the sign of encrypting APK file; Whether described interpolation is that the sign of encrypting APK file specifically comprises for distinguishing: identify unit adds a default GUID value at the APK file front end after encrypting;
Decryption unit is also for judging that whether described APK file front end is this default GUID value, is if so, decrypted the central directory data field in encrypted APK file.
Technical scheme of the present invention can effectively stop the APK file on manufacturer's task equipment to be exported on other equipment to install and use, the copyright of protection APK file, the service of further protecting this application to provide.
Accompanying drawing explanation
Fig. 1 is the process flow diagram of protecting the method for APK file copyright described in first embodiment of the invention;
Fig. 2 is the module diagram of encrypting the device of APK file described in second embodiment of the invention;
Fig. 3 is the module diagram of deciphering the device of APK file described in third embodiment of the invention;
Fig. 4 is the module diagram of protecting the system of APK file copyright described in four embodiment of the invention.
Description of reference numerals:
End is submitted in 1-application to
2-user side
11-ciphering unit
12-identify unit
21-application download unit
22-decryption unit
23-installation unit
Embodiment
By describing technology contents of the present invention, structural attitude in detail, being realized object and effect, below in conjunction with embodiment and coordinate accompanying drawing to be explained in detail.
Refer to Fig. 1, for protecting the process flow diagram of the method for APK file copyright described in first embodiment of the invention; Described method comprises step:
S1, application submit to end to be encrypted the central directory data field in APK file;
S2, user side receive described APK file;
S3, user side are decrypted the central directory data field in encrypted APK file;
S4, user side are installed described APK file.
Wherein, APK is exactly in fact a common ZIP bag, includes many files and catalogue, and ZIP bag is except preserving file and directory content, also need to preserve the information such as file and directory name, hierarchical structure relation, access file, the place that these information are preserved is called central directory data field.Encryption described in step S1 is encrypted this central directory data field.Just cannot be by common ZIP decompression tool to open through the APK file after encrypting, also cannot be by primary APK resolver resolves, thus on the Android equipment that cannot provide in other manufacturers, install.
Further, in the step S1 of the method for described protection APK file copyright, application submits to end to encrypt behind the central directory data field in APK file, also comprises a step:
Whether at the APK file after encrypting, add for distinguishing is the sign of encrypting APK file;
After step S2 user side is downloaded APK file and before step S3, also comprise a step:
According to described sign, judge whether APK file is encrypt file, and be while encrypting APK file, to decipher the central directory data field in APK file at the described APK file of judgement.
Further, in the method for described protection APK file copyright, distinguish whether whether APK file is that the method for encrypting APK file is specially:
Application submits to the APK file front end of end after encryption to add a default GUID value;
User side first judges that whether described APK file front end is this default GUID value, is if so, decrypted the central directory data field in encrypted APK file after downloading APK file.GUID is a kind of Globally Unique Identifier, and length is 16 bytes, and different files exist the possibility of 2 identical GUID values very little, therefore can play and differentiate and mark action.
Further, in the method for described protection APK file copyright, the central directory data field algorithm used of encrypting in APK file described in step S1 is symmetric encipherment algorithm AES.In other embodiments, also can take other can meet the cryptographic algorithm of safety requirements.
Thus, the Android system equipment that encrypted APK file only can You Ben manufacturer provides is resolved and is installed, the Android system equipment providing for Fei Ben manufacturer Here it is the file that cannot resolve installation through encryption, this has just fully ensured the copyright of APK file.
Refer to Fig. 2, for encrypting the module diagram of the device of APK file described in second embodiment of the invention; Described device comprises ciphering unit 11, for the central directory data field to APK file, is encrypted.
Wherein, APK is exactly in fact a common ZIP bag, includes many files and catalogue, and ZIP bag is except preserving file and directory content, also need to preserve the information such as file and directory name, hierarchical structure relation, access file, the place that these information are preserved is called central directory data field.The encrypted work that ciphering unit 11 carries out is encrypted this central directory data field.Just cannot be by common ZIP decompression tool to open through the APK file after encrypting, also cannot be by primary APK resolver resolves, thus on the Android equipment that cannot provide in other manufacturers, install.
Whether further, in the device of described encryption APK file, also comprise identify unit 12, be the sign of encrypting APK file for add for distinguishing at encrypted APK file;
Whether described interpolation is that the sign of encrypting APK file specifically comprises for distinguishing:
Identify unit 12 adds a default GUID value at the APK file front end after encrypting.
Thus, the Android system equipment that encrypted APK file only can You Ben manufacturer provides is resolved and is installed, the Android system equipment providing for Fei Ben manufacturer Here it is the file that cannot resolve installation through encryption, this has just fully ensured the copyright of APK file.
Refer to Fig. 3, for deciphering the module diagram of the device of APK file described in third embodiment of the invention; Described device comprises application download unit 21, decryption unit 22 and installation unit 23;
Described application download unit 21 is for receiving APK file;
Described decryption unit 22 is decrypted for the central directory data field to encrypted APK file;
Described installation unit 23 is for installing described APK file.
Further, in the device of described deciphering APK file, decryption unit 22 is also for judging according to a sign whether APK file is encrypt file, and deciphers the central directory data field in APK file when encrypting APK file at the described APK file of judgement;
A described default GUID value that is designated that APK file front end adds.
Because APK is exactly in fact a common ZIP bag, include many files and catalogue, ZIP bag, except preserving file and directory content, also needs to preserve the information such as file and directory name, hierarchical structure relation, access file, and the place that these information are preserved is called central directory data field.The received APK file of device of described deciphering APK file may be the file of central directory data field after encrypted, APK file after encrypting just cannot be by common ZIP decompression tool to open, also cannot be by primary APK resolver resolves, thereby on the Android equipment that cannot provide in other manufacturers, install, and can only on the Android equipment that is equipped with the device of deciphering APK file described in present embodiment, install.
After application download unit 21 is downloaded APK file, first decryption unit 22 judges that whether described APK file front end is this default GUID value, is if so, decrypted the central directory data field in encrypted APK file.GUID is a kind of Globally Unique Identifier, and length is 16 bytes, and different files exist the possibility of 2 identical GUID values very little, therefore can play and differentiate and mark action.
Refer to Fig. 4, for protecting the module diagram of the system of APK file copyright described in four embodiment of the invention.Described system comprises application submission end 1 and user side 2; Described application submits to end 1 to comprise ciphering unit 11, for the central directory data field to APK file, is encrypted;
User side 2 comprises application download unit 21, decryption unit 22 and installation unit 23;
Described application download unit 21 is for receiving APK file;
Described decryption unit 22 is decrypted for the central directory data field to encrypted APK file;
Described installation unit 23 is for installing described APK file.
Whether further, in the system of described protection APK file copyright, application submits to end 1 also to comprise identify unit 12, for add for distinguishing at encrypted APK file, be the sign of encrypting APK file; Whether described interpolation is that the sign of encrypting APK file specifically comprises for distinguishing: identify unit 12 adds a default GUID value at the APK file front end after encrypting;
Decryption unit 22 is also for judging that whether described APK file front end is this default GUID value, is if so, decrypted the central directory data field in encrypted APK file.
Wherein, APK is exactly in fact a common ZIP bag, includes many files and catalogue, and ZIP bag is except preserving file and directory content, also need to preserve the information such as file and directory name, hierarchical structure relation, access file, the place that these information are preserved is called central directory data field.The encrypted work that ciphering unit 11 carries out is encrypted this central directory data field.APK file after encrypting just cannot be by common ZIP decompression tool to open, also cannot be by primary APK resolver resolves, thereby on the Android equipment that cannot provide in other manufacturers, install, and only can by thering is the decryption unit 22 of decipher function, install at user side described in native system.
After application download unit 21 is downloaded APK file, first decryption unit 22 judges that whether described APK file front end is this default GUID value, is if so, decrypted the central directory data field in encrypted APK file.GUID is a kind of Globally Unique Identifier, and length is 16 bytes, and different files exist the possibility of 2 identical GUID values very little, therefore can play and differentiate and mark action.
The foregoing is only embodiments of the invention; not thereby limit scope of patent protection of the present invention; every equivalent structure or conversion of equivalent flow process that utilizes instructions of the present invention and accompanying drawing content to do; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (10)
1. a method of protecting APK file copyright, comprises step:
Application submits to end to be encrypted the central directory data field in APK file;
User side receives described APK file;
User side is decrypted the central directory data field in encrypted APK file;
User side is installed described APK file.
2. in the method for protection APK file copyright as claimed in claim 1, application submits to end to encrypt behind the central directory data field in APK file, also comprises a step:
Whether at the APK file after encrypting, add for distinguishing is the sign of encrypting APK file;
User side is downloaded after APK file, also comprises a step:
According to described sign, judge whether APK file is encrypt file, and be while encrypting APK file, to decipher the central directory data field in APK file at the described APK file of judgement.
3. in the method for protection APK file copyright as claimed in claim 1 or 2, distinguish whether whether APK file is that the method for encrypting APK file is specially:
Application submits to the APK file front end of end after encryption to add a default GUID value;
User side first judges that whether described APK file front end is this default GUID value, is if so, decrypted the central directory data field in encrypted APK file after downloading APK file.
4. in the method for protection APK file copyright as claimed in claim 1 or 2, the central directory data field algorithm used in described encryption APK file is symmetric encipherment algorithm.
5. a device of encrypting APK file, comprises ciphering unit, for the central directory data field to APK file, is encrypted.
6. whether in the device of encryption APK file as claimed in claim 5, also comprise identify unit, be the sign of encrypting APK file for add for distinguishing at encrypted APK file;
Whether described interpolation is that the sign of encrypting APK file specifically comprises for distinguishing:
Identify unit adds a default GUID value at the APK file front end after encrypting.
7. decipher a device for APK file, comprise application download unit, decryption unit and installation unit;
Described application download unit is used for receiving APK file;
Described decryption unit is for being decrypted the central directory data field of encrypted APK file;
Described installation unit is used for installing described APK file.
8. in the device of deciphering as claimed in claim 7 APK file, decryption unit is also for judge according to a sign whether APK file is encrypt file, and deciphers the central directory data field in APK file during for encryption APK file at the described APK file of judgement;
A described default GUID value that is designated that APK file front end adds.
9. protect a system for APK file copyright, comprise application submission end and user side; Described application is submitted to end to comprise and ciphering unit is encrypted for the central directory data field to APK file;
User side comprises application download unit, decryption unit and installation unit;
Described application download unit is used for receiving APK file;
Described decryption unit is for being decrypted the central directory data field of encrypted APK file;
Described installation unit is used for installing described APK file.
10. whether in the system of protection APK file copyright as claimed in claim 9, application submits to end also to comprise identify unit, for add for distinguishing at encrypted APK file, be the sign of encrypting APK file; Whether described interpolation is that the sign of encrypting APK file specifically comprises for distinguishing: identify unit adds a default GUID value at the APK file front end after encrypting;
Decryption unit is also for judging that whether described APK file front end is this default GUID value, is if so, decrypted the central directory data field in encrypted APK file.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410277365.9A CN104021320A (en) | 2014-06-20 | 2014-06-20 | Method, device and system for protecting copyrights of APK files |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410277365.9A CN104021320A (en) | 2014-06-20 | 2014-06-20 | Method, device and system for protecting copyrights of APK files |
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| CN104021320A true CN104021320A (en) | 2014-09-03 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410277365.9A Pending CN104021320A (en) | 2014-06-20 | 2014-06-20 | Method, device and system for protecting copyrights of APK files |
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Application publication date: 20140903 |