CN103886230A - Software copyright protection method of android system and system thereof - Google Patents
Software copyright protection method of android system and system thereof Download PDFInfo
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- CN103886230A CN103886230A CN201410062491.2A CN201410062491A CN103886230A CN 103886230 A CN103886230 A CN 103886230A CN 201410062491 A CN201410062491 A CN 201410062491A CN 103886230 A CN103886230 A CN 103886230A
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- 238000000034 method Methods 0.000 title claims abstract description 25
- 230000007246 mechanism Effects 0.000 claims abstract description 13
- 238000012856 packing Methods 0.000 claims abstract description 8
- 238000012544 monitoring process Methods 0.000 claims description 7
- 241000700605 Viruses Species 0.000 claims description 5
- 230000013011 mating Effects 0.000 claims description 5
- 239000000284 extract Substances 0.000 claims description 2
- 230000003044 adaptive effect Effects 0.000 abstract 1
- 238000005336 cracking Methods 0.000 abstract 1
- 230000007547 defect Effects 0.000 abstract 1
- 230000008859 change Effects 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000003014 reinforcing effect Effects 0.000 description 4
- 230000006378 damage Effects 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
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- 244000035744 Hura crepitans Species 0.000 description 1
- 230000008485 antagonism Effects 0.000 description 1
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- 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
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Abstract
The invention relates to the android system, provides a software copyright protection method of the android system, and aims to solve defects that no reliable protection mechanism concerning on apk application exists in the prior art. The method includes that firstly, a system analyzes the apk application; then the system encrypts and packs the apk application; then the system calls and writes the shell dex; then the system modifies xml files in the apk application with the shell dex files in a matching manner to acquire new xml files; then the system packs back and compiles the encrypted and packed apk application files; finally, the system signs on and publish the new apk application. By encrypting and packing the entire apk core technology, only satellite resource files without destroying value are exposed to a breaker, protection on apk is realized, and destroying manners of copying, cracking and tampering on the apk application in current internet market can be prevented effectively; meanwhile, the core dex files in the original apk never changes; and the method is adaptive to software copyright protection of the android system.
Description
Technical field
The present invention relates to Android system, particularly the protection mechanism of apk application under android environment.
Background technology
Mobile Development marketplace platform is stood in great numbers, android platform is since releasing in November, 2007, characteristic with it based on linux kernel, open source code, obtain rapidly the support of numerous developers and numerous software vendor, equipment vendors, it is a dark horse in platform market, is even described as the most strong platform of antagonism iphone.
Number of applications based on android platform also rapidly increases, and it is brilliant that android progressively moves towards.Everybody wishes that this open platform can carry out greatly, is of value to each role of the whole industrial chain of mobile Internet: the Google of software platform provider, components and parts supplier and equipment manufacturers, Virtual network operator, application developer, consumer.But from current situation, android has entered the trouble waters that problem is multiple, make android become safely a much-talked-about topic.
The rising of Android number of users, has expedited the emergence of a collection of and similar third party's application software shop of android official market.Their access threshold is lower, and Regulation Policy is relatively loose, allows many piracy/mountain vallages unworthily move in regular software.Android installation kit (android package, hereinafter to be referred as apk) application is simultaneously tampered, and a series of software security problem is cracked.Constituted a serious infringement software developer's copyright of these potential safety hazards, reputation is had a strong impact on, and by apk is implanted to virus, steal consumer privacy, malice is deducted fees etc., causes very large puzzlement and economic loss to consumer.
Security issues become increasingly urgent for apk under Android environment:
1, mountain vallage app becomes to reveal personal information chief-criminal, can steal bank card information.
2, mobile phone wooden horse favorite variety show rank, Chinese good sound becomes " favourite ".
3, " torch kills " infected and surpassed 500 sections of torch app.
5, eavesdropping, planted agent's class mobile phone viruses are savage, stealthily upload message registration, geographic position, short message and wait until illegal server.
6, Bluebox Security7 month No. 3 announces, and on current market, 99% Android product all faces fearful security breaches: do not change in the situation of signature app is distorted.
Such safety report continues to bring out; also caused the attention of google; take certain measure; obscure instrument proguard, sandbox principle, signature authentication etc. such as adding; these means knowledge have increased the necessarily consuming time of saboteur's decompiling apk, but lack the reliably protecting mechanism for apk itself.How starting with and to implement effectively protection from apk itself, this point is all urgent problem for apk developer and consumer.
Summary of the invention
Technical matters to be solved by this invention, is just to provide a kind of software copyright protecting method of Android system, to reach the effect for the reliably protecting of apk itself.
The present invention solve the technical problem, and the technical scheme of employing is that the software copyright protecting method of Android system, comprises following step:
Step 1, system are applied and are resolved apk;
Step 2, system are applied to be encrypted to apk and are added shell;
Step 3, system are called and are write shell dex;
Step 4, system are carried out and the amendment of mating of shell dex file the xml file in apk application, obtain new xml file;
Step 5, system are to adding encryption the apk application file folder packing hollow-square compiling after shell;
Step 6, system apply to new apk the issue of signing.
Concrete, in described step 1, system is resolved file, comprises and extracts the core dex file of apk application and configure accordingly xml file, retains its resource file.
Concrete, in described step 2, system adopts the form of calling chained library, and to apk, application is encrypted and adds shell, and dex file is done to the as a whole protection that is encrypted, and forms the resource file of picture as former apk application, and described picture is counted a.jpg.
Concrete, in described step 3, the write content of system to shell dex, comprise call chained library deciphering picture a.jpg, system successfully identify apk application with protection mechanism, successfully jump to former dex and load after delete former dex.
Concrete, in described step 4, system is carried out and the amendment of mating of shell dex file xml file, obtains new xml file and must retain original configuration information, can match with shell dex, and can successfully jump to former dex file.
Detailed, in described step 5, the former resource file, picture a.jpg, shell dex and the new xml file that retain are again returned compiling and packing by system, forms an Android system and can identify the new apk of loading and apply.
Detailed, in described step 6, the signature mechanism of employing can be the signature that android developing instrument carries, and can be also apk application developer or publisher's privately owned signature.
The Software Copyright Protection System that is applicable to Android system, is characterized in that, comprises server end and client, and described server end is connected with client;
Described server end, first to apk, safety monitoring is carried out in application, comprise whether carrying virus, whether carry malicious code and whether have rogue attacks factor, safety monitoring is encrypted and adds shell apk application by rear, and issue the new apk application with copyright protection regime forming to client, count apk_new;
Described client, registers/logs in, uploads original apk application, download apk_new and check at any time apk status function for user.
Detailed, described client and server can be realized under windows.
The invention has the beneficial effects as follows, by the core technology entirety of apk is encrypted and adds shell, to the only not a bit attached resource file being worth that destroys of sudden and violent leakage of saboteur, the effective protection of realization to apk copyright.Simultaneously framework, the module of the core dex file in original apk, realize logic and at all do not change, retain the consumer experience effect of former apk application completely.Remove apk application developer from the trouble and worry of detection of code function again after reinforcing.Meanwhile, the software copyright protection made safe that the present invention adopts is high, and the Software Copyright Protection System of structure is simple to operate, can effectively prevent in current Internet market for the mountain vallage of apk application, the means of destruction such as crack, distorts.In ensureing software developer's intellecture property and consumer's interests, do not affect the experience of consumer to apk application original function completely.
Brief description of the drawings
Fig. 1 is the embodiment process flow diagram of the software copyright protecting method of Android system of the present invention;
Fig. 2 is the embodiment Software Copyright Protection System structural drawing of the software copyright protecting method of Android system of the present invention.
Embodiment
Describe technical scheme of the present invention in detail below in conjunction with drawings and Examples:
The present invention is directed in prior art the reliably protecting mechanism lacking for apk application itself, how itself to start with and to implement effectively protection from apk application, this point is all urgent problem for apk developer and consumer, a kind of software copyright protecting method of Android system is provided, first, system is applied and is resolved apk; Then, system is applied to be encrypted to apk and is added shell; Secondly, system is called and is write shell dex; Secondly, system is carried out and the amendment of mating of shell dex file the xml file in apk application, obtains new xml file; Again secondly, system is to adding encryption the apk application file folder packing hollow-square compiling after shell; Finally, system applies to new apk the issue of signing.By the core technology entirety of apk application is encrypted and adds shell, saboteur is only leaked to the attached resource file that does not at all destroy value cruelly, realize the protection to apk application.Simultaneously framework, the module of the core dex file in original apk application, realize logic and at all do not change, retain the consumer experience effect of former apk application completely.Remove user from the trouble and worry of detection of code function again after reinforcing.Meanwhile, the software copyright protection made safe that the present invention adopts is high, and the Software Copyright Protection System of structure is simple to operate, can effectively prevent in current Internet market for the mountain vallage of apk application, the means of destruction such as crack, distorts.In ensureing software developer's intellecture property and consumer's interests, do not affect the experience of consumer to apk application original function completely.
Embodiment
This example provides a kind of apk application application software copy-right protection method and system; focus on the safety of apk application under android environment; general protection apk application core technology; effectively prevent saboteur to apk apply the decompiling carried out, instead debug, crack, distort, the illegal act such as mountain vallage, maintenance software developer copyright and consumer's interests.
The software copyright protecting method of this routine Android system, as shown in Figure 1, mainly comprises following implementation step:
1, document analysis
Apk application under Android environment is equal to the exe file under windows, and an apk represents an application under android.To apk, application has fixing load operating pattern to Android system, and the structure composed of each apk application is also fixed.If change, Android system is None-identified, loading and operation.
The core of apk is dex file, and the key code that has comprised whole apk and realize logic is the pith that Android system loads, and is also the first-selection that saboteur destroys.Follow dex file to also have an xml file, this is the important configuration describing document that guides correct this apk of load operating of Android system simultaneously, and xml file is must accompanying of dex.
To apk, application decompresses this step, forms complete apk file, retains original resource file, obtains dex core document and xml configuration file wherein.
2, add shell
The as a whole operation that is encrypted done by dex file by this step, do not change the original tactic pattern of dex file and code form.Ciphering process adopts the mode of calling chained library, and dex file is inputted as chained library, and the ciphertext of output is picture form a.jpg, as the resource file of new apk file apk_new, is placed on respective directories and preserves together with resource file in document analysis.
3, shell dex file edit
Dex in former apk application has encrypted becomes the picture a.jpg that Android system cannot Direct Recognition calls, and needs a new dex file can allow android successfully load former apk file, and new dex file is referred to as shell dex, symbol dex_new mark.Main following four functions of this file:
1) Android system is successfully identified the apk_new of loaded ribbon protection mechanism;
2) call chained library deciphering picture a.jpg, obtain former dex;
3) android successfully loads former dex file;
4) apk successfully deletes former dex file after installing.
4, XML file modification
Xml file is that apk applies requisite configuration file; having added in the apk_new of protection mechanism; former dex file is by android None-identified; new dex_new need to be equipped with new xml file; but must retain again former xml file content; the present invention modifies on the basis of former xml, forms xml_new file.
The Core Feature of xml_new file is to realize the effective redirect of dex and dex_new in Android system.
5, packing hollow-square compiling
The resource file of apk_new, dex_new and xml_new packed and return compiling, forming the apk_new that meets anroid system prescribed model.Wherein packing manner can be taked any in 7zip or winara.
6, signature is issued
Apk__new is effectively signed, form apk_new_sign, externally issue.
Signature in this step can be the signature mechanism that android carries, and can be also the privately owned signature of specific android terminal accreditation.
In conjunction with software copyright protection mechanism of the present invention, can construct a set of complete Software Copyright Protection System.Server end carries out apk and adds shell, and user is by client-access server end.As shown in Figure 2, client operation, comprises following step:
Step 1: user installation client, register;
Step 2: user logs in, selects upload function, by the claimed apk end that uploads onto the server;
Step 3: user logs in, can check the current treatment state at server end of apk; Apk need to pass through safety monitoring, adds shell, complete a series of processes such as issue after uploading onto the server and holding, and developer can log at any time client in this process, tracking enquiry apk treatment state.
Step 4: user logs in, downloads the apk_new that has possessed safety protecting mechanism.
Server side operation, comprises following step:
Step 1: receive apk file, it is carried out to safety monitoring and comprise serial monkey wrench such as whether carrying virus, malicious code, rogue attacks, monitoring enters and adds shell flow process after passing through;
Step 2: according to sequence flow as described in Figure 1, apk is encrypted and adds shell copyright protection, show in real time apk treatment state, reinforced rear issue apk_new, download for user.
In sum, above-mentioned apk software copyright protecting method, has carried out adding shell by the core technology entirety of apk, and what saboteur was leaked cruelly is attached resource file, does not destroy value at all.Simultaneously framework, the module of the core dex file in original apk, realize logic and at all do not change, retain the consumer experience effect of former apk completely.Remove user from the trouble and worry of detection of code function again after reinforcing.Possess the apk of software copyright protection function, the core dex file that saboteur is truncated to, is to show no sign of with former apk function the shell dex contacting, and does not possess equally to destroy to be worth.Core enciphering and deciphering algorithm in the present invention, calls by the form of chained library, and this mode is secured fashion generally acknowledged in current internet environment, needn't worry the risk that enciphering and deciphering algorithm is cracked., the amendment of xml configuration file, realizes the effective redirect to former dex by shell dex.User needn't be to making otherwise amendment through the apk_new reinforcing, and directly signature is issued.
The software copyright protection made safe that the present invention adopts is high, and the Software Copyright Protection System of structure is simple to operate, can effectively prevent in current Internet market for the mountain vallage of apk application, the means of destruction such as crack, distorts.In ensureing software developer's intellecture property and consumer's interests, do not affect the experience of consumer to apk application original function completely.
Claims (9)
- The software copyright protecting method of 1.android system, is characterized in that, comprises following step:Step 1, system are applied and are resolved apk;Step 2, system are applied to be encrypted to apk and are added shell;Step 3, system are called and are write shell dex;Step 4, system are carried out and the amendment of mating of shell dex file the xml file in apk application, obtain new xml file;Step 5, system are to adding encryption the apk application file folder packing hollow-square compiling after shell;Step 6, system apply to new apk the issue of signing.
- 2. the software copyright protecting method of Android system according to claim 1, is characterized in that, in described step 1, system is resolved file, comprises and extracts the core dex file of apk application and configure accordingly xml file, retains its resource file.
- 3. the software copyright protecting method of Android system according to claim 1; it is characterized in that; in described step 2; system adopts the form of calling chained library, and to apk, application is encrypted and adds shell; dex file is done to the as a whole protection that is encrypted; form the resource file of picture as former apk application, described picture is counted a.jpg.
- 4. the software copyright protecting method of Android system according to claim 1; it is characterized in that; in described step 3; the write content of system to shell dex, comprise call chained library deciphering picture a.jpg, system successfully identify apk application with protection mechanism, successfully jump to former dex and load after delete former dex.
- 5. the software copyright protecting method of Android system according to claim 1; it is characterized in that; in described step 4; system is carried out and the amendment of mating of shell dex file xml file; obtain new xml file and must retain original configuration information; can match with shell dex, and can successfully jump to former dex file.
- 6. the software copyright protecting method of Android system according to claim 1; it is characterized in that; in described step 5; the former resource file, picture a.jpg, shell dex and the new xml file that retain are again returned compiling and packing by system, forms an Android system and can identify the new apk of loading and apply.
- 7. the software copyright protecting method of Android system according to claim 1; it is characterized in that; in described step 6, the signature mechanism of employing can be the signature that android developing instrument carries, and can be also apk application developer or publisher's privately owned signature.
- 8. the Software Copyright Protection System that is applicable to Android system, is characterized in that, comprises server end and client, and described server end is connected with client;Described server end, first to apk, safety monitoring is carried out in application, comprise whether carrying virus, whether carry malicious code and whether have rogue attacks factor, safety monitoring is encrypted and adds shell apk application by rear, and issue the new apk application with copyright protection regime forming to client, count apk_new;Described client, registers/logs in, uploads original apk application, download apk_new and check at any time apk status function for user.
- 9. the Software Copyright Protection System that is applicable to Android system according to claim 8, is characterized in that, described client and server can be realized under windows.
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