CN109271759A - So file security reinforcement technique method based on Android platform - Google Patents
So file security reinforcement technique method based on Android platform Download PDFInfo
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- CN109271759A CN109271759A CN201811120565.8A CN201811120565A CN109271759A CN 109271759 A CN109271759 A CN 109271759A CN 201811120565 A CN201811120565 A CN 201811120565A CN 109271759 A CN109271759 A CN 109271759A
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- character string
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- android
- reinforcement technique
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- 238000000034 method Methods 0.000 title claims abstract description 40
- 230000002787 reinforcement Effects 0.000 title claims abstract description 12
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 19
- 238000011068 loading method Methods 0.000 claims abstract description 10
- 238000006073 displacement reaction Methods 0.000 claims abstract description 7
- 238000003491 array Methods 0.000 claims description 21
- 239000000203 mixture Substances 0.000 claims description 3
- 238000012217 deletion Methods 0.000 claims 1
- 230000037430 deletion Effects 0.000 claims 1
- 238000004458 analytical method Methods 0.000 abstract description 9
- 230000003068 static effect Effects 0.000 abstract description 6
- 230000000694 effects Effects 0.000 description 5
- 238000005728 strengthening Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000007596 consolidation process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification 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
- G06F21/14—Protecting executable software against software analysis or reverse engineering, e.g. by obfuscation
-
- 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
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- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Software Systems (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Computer Security & Cryptography (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Technology Law (AREA)
- Multimedia (AREA)
- Health & Medical Sciences (AREA)
- Bioethics (AREA)
- General Health & Medical Sciences (AREA)
- Storage Device Security (AREA)
Abstract
The invention discloses so file security reinforcement technique methods based on Android platform.Belong to so file security reinforcement technique field, the form aspect of so file is handled, there is it in the form of a file, it is set dynamically to carry out encryption and decryption in memory, it prevents from directly obtaining so file from local by attacker, the difficulty illegally cracked is increased, has so file security reinforcement technique method based on Android platform of good result in confrontation static analysis and anti-dynamic debugging.Including so file reinforcing process and so file decryption loading procedure；When Android project is needed using content in so file, read encrypted character string dimension in java file, the displacement for dynamically carrying out custom algorithm to the character string in character string dimension is decrypted and splicing, the character string spliced is written in the form of file stream under the app/pkgName/lib catalogue of java file, and it loads and calls in such a way that System.load loads so file, and be deleted after the completion of calling.
Description
Technical field
The present invention relates to so file security reinforcement technique fields, and in particular to so file security based on Android platform is reinforced
Technical method.
Background technique
There are two types of present so file reinforcing is general, one is consolidation process is carried out to so file itself, another is pair
The Native code of so file internal carries out obscuring encryption.Both reinforcing modes of present so file are all with file
Form exists, the carry out encryption and decryption in memory for fixing it, is easy to directly obtain so file from local by attacker, reduce
The difficulty illegally cracked, effect is poor in confrontation static analysis and anti-dynamic debugging.
Summary of the invention
The present invention is to provide the shape of a kind of pair of so file to solve existing so file security and reinforce above shortcomings
It is handled in terms of formula, has it in the form of a file, it is made dynamically to carry out encryption and decryption in memory, prevent from being attacked
The person of hitting directly obtains so file from local, increases the difficulty illegally cracked, has in confrontation static analysis and anti-dynamic debugging
So file security reinforcement technique method based on Android platform of good result.
The above technical problem is solved through the following technical scheme:
So file security reinforcement technique method based on Android platform, including so file reinforcing process and so file decryption add
Load process；
So file reinforcing process is as follows:
(A1) unguyed so file is read, which is read into memory in the form of file stream；
(A2) restoring files in memory are changed into byte arrays, displacement is carried out to byte arrays according to custom algorithm and is added
It is close, obtain new byte arrays；
(A3) then circulation reads byte arrays, in an orderly manner with the character string forms of regular length by the byte arrays of reading
It is written in java file, finally obtains a complete character string dimension；
So file decryption loading procedure is as follows:
(A4) when Android project is needed using content in so file, encrypted word is read in java file
Symbol string array, the displacement for dynamically carrying out custom algorithm to the character string in character string dimension is decrypted and splicing, will splice
Character string be written in the form of file stream under the app/pkgName/lib catalogue of java file, and pass through System.load
The mode of load so file is loaded and is called, and is deleted after the completion of calling.
It can be concluded that, general so file reinforcing mode, form side of this Scheme of Strengthening to so file are compared by analysis
Face is handled, and has it in the form of a file, so that it is dynamically carried out encryption and decryption in memory, is prevented by attacker
So file is directly obtained from local, increases the difficulty illegally cracked, is had well in confrontation static analysis and anti-dynamic debugging
Effect.
Preferably, before reading unguyed so file, getting out Android engineering first in step A1 and being used
So file；So file supported including each CPU frame of armeabi, x86 and armeabi-v7a；
In step A2, when changing the restoring files in memory into byte arrays, also need to prepare a reinforcing engineering, the work
Journey is created by template of java, uses pure java language, it is intended to reinforce so file.
In step A3, when circulation reads byte arrays, also so file is placed under specified directory, runs reinforcing project,
So file is passed through into a series of processing, one txt file of final output, txt file content is multiple character string compositions；Then
So of file format is read out in the form of file stream, is then encrypted in the form of byte byte, after encryption is completed,
Using every 2048 bytes as the output of the length of a character string, less than 2048, just exported with residue length, and in its head and the tail
In addition double quotation marks and comma, make its uniform format；Using all character strings in txt file according to the sequence of output as one
Character string dimension is stored in " .java " file；
In step A4, when Android project is needed using content in so file, also character string dimension assembly is risen
Come, being assembled into final character string in fact is exactly encrypted file, operation is decrypted in this character string, with the shape of file stream
Formula is saved in the sd card of mobile phone, is equivalent to and is reduced so file, its loading method is then called.
Preferably, so file includes so file that each CPU frame of armeabi, x86 and armeabi-v7a is supported.
The present invention can reach following effect:
The present invention by analysis it can be concluded that, compare general so file reinforcing mode, this Scheme of Strengthening is to so file
Handled in terms of form, have it in the form of a file, it is made dynamically to carry out encryption and decryption in memory, prevent by
Attacker directly obtains so file from local, increases the difficulty illegally cracked, equal in confrontation static analysis and anti-dynamic debugging
There is good effect.
Detailed description of the invention
Fig. 1 is a kind of flow diagram of so file reinforcing process of the present invention.
Fig. 2 is a kind of flow diagram of so file decryption loading procedure of the present invention.
Specific embodiment
The present invention will be further described below with reference to the accompanying drawings and embodiments.
Embodiment, so file security reinforcement technique method based on Android platform, referring to shown in Fig. 1, Fig. 2, including so text
Part reinforcing process and so file decryption loading procedure；
So file reinforcing process is as follows:
(A1) unguyed so file is read, which is read into memory in the form of file stream；
(A2) restoring files in memory are changed into byte arrays, displacement is carried out to byte arrays according to custom algorithm and is added
It is close, obtain new byte arrays；
(A3) then circulation reads byte arrays, in an orderly manner with the character string forms of regular length by the byte arrays of reading
It is written in java file, finally obtains a complete character string dimension；
So file decryption loading procedure is as follows:
(A4) when Android project is needed using content in so file, encrypted word is read in java file
Symbol string array, the displacement for dynamically carrying out custom algorithm to the character string in character string dimension is decrypted and splicing, will splice
Character string be written in the form of file stream under the app/pkgName/lib catalogue of java file, and pass through System.load
The mode of load so file is loaded and is called, and is deleted after the completion of calling.
In step A1, before reading unguyed so file, it gets out so file used in Android engineering first；
So file supported including each CPU frame of armeabi, x86 and armeabi-v7a；
In step A2, when changing the restoring files in memory into byte arrays, also need to prepare a reinforcing engineering, the work
Journey is created by template of java, uses pure java language, it is intended to reinforce so file.
In step A3, when circulation reads byte arrays, also so file is placed under specified directory, runs reinforcing project,
So file is passed through into a series of processing, one txt file of final output, txt file content is multiple character string compositions；Then
So of file format is read out in the form of file stream, is then encrypted in the form of byte byte, after encryption is completed,
Using every 2048 bytes as the output of the length of a character string, less than 2048, just exported with residue length, and in its head and the tail
In addition double quotation marks and comma, make its uniform format；Using all character strings in txt file according to the sequence of output as one
Character string dimension is stored in " .java " file；
In step A4, when Android project is needed using content in so file, also character string dimension assembly is risen
Come, being assembled into final character string in fact is exactly encrypted file, operation is decrypted in this character string, with the shape of file stream
Formula is saved in the sd card of mobile phone, is equivalent to and is reduced so file, its loading method is then called.
It can be concluded that, general so file reinforcing mode, form side of this Scheme of Strengthening to so file are compared by analysis
Face is handled, and has it in the form of a file, so that it is dynamically carried out encryption and decryption in memory, is prevented by attacker
So file is directly obtained from local, increases the difficulty illegally cracked, is had well in confrontation static analysis and anti-dynamic debugging
Effect.
Embodiments of the present invention are described above in conjunction with attached drawing, however, the implementation is not limited to the above embodiments, this field
Those of ordinary skill can be with various changes and modifications may be made within the scope of the appended claims.
Claims (3)
1. so file security reinforcement technique method based on Android platform, which is characterized in that including so file reinforcing process and so
File decryption loading procedure；
So file reinforcing process is as follows:
(A1) unguyed so file is read, which is read into memory in the form of file stream；
(A2) restoring files in memory are changed into byte arrays, displacement encryption are carried out to byte arrays according to custom algorithm,
Obtain new byte arrays；
(A3) then circulation reads byte arrays, and the byte arrays of reading are written in an orderly manner with the character string forms of regular length
Into java file, a complete character string dimension is finally obtained；
So file decryption loading procedure is as follows:
(A4) when Android project is needed using content in so file, encrypted character string is read in java file
Array,
The displacement for dynamically carrying out custom algorithm to the character string in character string dimension is decrypted and splicing,
The character string spliced is written under the app/pkgName/lib catalogue of java file in the form of file stream, and led to
The mode for crossing System.load load so file is loaded and is called,
And after the completion of calling by it from local deletion.
2. a kind of so file security reinforcement technique method based on Android platform according to claim 1, is characterized in that,
In step A1, before reading unguyed so file, it gets out so file used in Android engineering first；Including
So file that each CPU frame of armeabi, x86 and armeabi-v7a is supported；
In step A2, when changing the restoring files in memory into byte arrays, also need to prepare a reinforcing engineering, which is
It is created using java as template, uses pure java language, it is intended to reinforce so file；
In step A3, when circulation reads byte arrays, also so file is placed under specified directory, reinforcing project is run, by so
File passes through a series of processing, one txt file of final output, and txt file content is multiple character string compositions；It then will be literary
So of part format is read out in the form of file stream, is then encrypted in the form of byte byte, will be every after encryption is completed
Length output of 2048 bytes as a character string, less than 2048, is just exported with residue length, and add in its head and the tail
Double quotation marks and comma make its uniform format；Using all character strings in txt file according to the sequence of output as a character
String array is stored in " .java " file；
In step A4, when Android project is needed using content in so file, also character string dimension assembly is got up, is spelled
Dressing up final character string in fact is exactly encrypted file, and operation is decrypted in this character string, is protected in the form of file stream
It is stored in the sd card of mobile phone, is equivalent to and reduces so file, then call its loading method.
3. a kind of so file security reinforcement technique method based on Android platform according to claim 2, is characterized in that, so
File includes so file that each CPU frame of armeabi, x86 and armeabi-v7a is supported.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811120565.8A CN109271759B (en) | 2018-09-26 | 2018-09-26 | So file security reinforcement technical method based on android platform |
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|---|---|---|---|
| CN201811120565.8A CN109271759B (en) | 2018-09-26 | 2018-09-26 | So file security reinforcement technical method based on android platform |
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| Publication Number | Publication Date |
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| CN109271759A true CN109271759A (en) | 2019-01-25 |
| CN109271759B CN109271759B (en) | 2022-04-05 |
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| CN201811120565.8A Active CN109271759B (en) | 2018-09-26 | 2018-09-26 | So file security reinforcement technical method based on android platform |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111324317A (en) * | 2020-02-18 | 2020-06-23 | 上海东普信息科技有限公司 | Local printing method, device, equipment and storage medium |
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| CN105278954A (en) * | 2015-09-25 | 2016-01-27 | 杭州哲信信息技术有限公司 | Anti-cracking Android APP and operation mode thereof |
| CN105930745A (en) * | 2016-04-25 | 2016-09-07 | 北京珊瑚灵御科技有限公司 | Android platform-based character string reinforcement method |
| CN106650327A (en) * | 2016-11-24 | 2017-05-10 | 湖南鼎源蓝剑信息科技有限公司 | so file dynamic recovery-based Android application reinforcement method |
| CN107273723A (en) * | 2017-07-07 | 2017-10-20 | 广东工业大学 | A kind of Android platform applied software protection method based on so file shell addings |
-
2018
- 2018-09-26 CN CN201811120565.8A patent/CN109271759B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105278954A (en) * | 2015-09-25 | 2016-01-27 | 杭州哲信信息技术有限公司 | Anti-cracking Android APP and operation mode thereof |
| CN105930745A (en) * | 2016-04-25 | 2016-09-07 | 北京珊瑚灵御科技有限公司 | Android platform-based character string reinforcement method |
| CN106650327A (en) * | 2016-11-24 | 2017-05-10 | 湖南鼎源蓝剑信息科技有限公司 | so file dynamic recovery-based Android application reinforcement method |
| CN107273723A (en) * | 2017-07-07 | 2017-10-20 | 广东工业大学 | A kind of Android platform applied software protection method based on so file shell addings |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111324317A (en) * | 2020-02-18 | 2020-06-23 | 上海东普信息科技有限公司 | Local printing method, device, equipment and storage medium |
| CN111324317B (en) * | 2020-02-18 | 2024-03-26 | 上海东普信息科技有限公司 | Local printing face list method, device, equipment and storage medium |
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| CN109271759B (en) | 2022-04-05 |
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