CN105303073A - Protecting method for software codes - Google Patents
Protecting method for software codes Download PDFInfo
- Publication number
- CN105303073A CN105303073A CN201510845479.3A CN201510845479A CN105303073A CN 105303073 A CN105303073 A CN 105303073A CN 201510845479 A CN201510845479 A CN 201510845479A CN 105303073 A CN105303073 A CN 105303073A
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- hook function
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- function
- api hook
- defined api
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- 238000000034 method Methods 0.000 title claims abstract description 28
- 230000004048 modification Effects 0.000 claims abstract description 5
- 238000012986 modification Methods 0.000 claims abstract description 5
- 238000001914 filtration Methods 0.000 claims description 3
- 238000013515 script Methods 0.000 abstract description 8
- 230000006870 function Effects 0.000 description 66
- 230000008569 process Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
Classifications
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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
- G06F21/121—Restricting unauthorised execution of programs
- G06F21/125—Restricting unauthorised execution of programs by manipulating the program code, e.g. source code, compiled code, interpreted code, machine code
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- Computer Security & Cryptography (AREA)
- Theoretical Computer Science (AREA)
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- Technology Law (AREA)
- Computer Hardware Design (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Stored Programmes (AREA)
- Storage Device Security (AREA)
Abstract
The invention discloses a protecting method for software codes. The protecting method comprises the following steps: S1) performing user-defined modification on at least one API (Application Program Interface) function in an API function library of an operation system in advance, and then acquiring a user-defined API hook function, linking the user-defined API hook function with the API function library; S2) installing or integrating the user-defined API hook function into a target application program under the operation system in terminal equipment which is connected with a hardware encrypting device; S3) while encrypting a script code loaded to the target application program, running the target application program, firstly performing the user-defined API hook function and then invoking the hardware encrypting device, thereby acquiring an encrypted data; S4) while decrypting the encrypted data, running the target application program, firstly performing the user-defined API hook function and then invoking the hardware encrypting, thereby acquiring a decrypted data. According to the protecting method for software codes, the poor safety and the potential safety hazard caused by the incapability of the shell to protect the script code in text form in the present software code protecting scheme are solved.
Description
Technical field
The present invention relates to computer software fields, particularly a kind of software code guard method.
Background technology
Script be otherwise known as enlarging language, it is a kind of programming language, being used for control software design application program or request software application carries out a certain service, script be traditional write to shorten-compile-link-operational process and the computer programming language that creates.Script has simple, easy to learn, easy-to-use characteristic usually, object be exactly wish to allow programmer complete program fast write work, scripted code generally to load in destination application and is all exist in the form of text, be similar to a kind of order, only make an explanation when called, a scripted code is normally explained and is run and decomplier.For software developer, it is important that the execution efficiency of software can not show a candle to development efficiency, and therefore in software development, the use of script becomes more and more general, therefore also seems important to the protection of the scripted code be loaded in destination application.
Generally; the code protection of compiling type is completed by shell and hardware encipher equipment usually; but for the script without compilation process own; when storing as textual form; the protection of housing form is also inapplicable; scripted code usually need the interpreter of operating system or independently interpreter make an explanation, if but the non-opening of the code of interpreter, then protect scripted code more difficult.
Summary of the invention
In view of the problems referred to above that prior art exists, the object of this invention is to provide a kind of software code guard method, the method can carry out available protecting to scripted code by the mode of encryption and decryption scripted code under the cooperation of api function and encryption hardware.
To achieve these goals, the invention provides a kind of software code guard method, comprising the following steps:
S1, carries out self-defined amendment at least one api function in the api function storehouse of operating system in advance and obtains self-defined API Hook Function, and itself and described api function storehouse are mounted;
S2, is installed to or is integrated in the destination application in terminal device under operating system by described self-defined API Hook Function, described terminal device and hardware encipher equipment connection;
S3, when being encrypted the scripted code be loaded in described destination application, run described destination application and first perform described self-defined API Hook Function, calling described hardware encipher equipment by described self-defined API Hook Function and acquisition enciphered data is encrypted to the scripted code be loaded in described destination application;
S4, when being decrypted described enciphered data, run described destination application and first perform described self-defined API Hook Function, calling described hardware encipher equipment by described self-defined API Hook Function and rear acquisition data decryption is decrypted to described enciphered data.
As preferably, step S2 comprises: the running environment of described self-defined API Hook Function to described hardware encipher equipment checks.
As preferably, step S3 comprises:
S31, by the interpreter of described operating system or described terminal device independently interpreter store described scripted code;
S32, described destination application first performs described self-defined API Hook Function, and described self-defined API Hook Function calls described hardware encipher equipment, and described hardware encipher equipment is encrypted described scripted code thus obtains described enciphered data;
S33, described enciphered data is sent to described destination application or is stored in described hardware encipher equipment by described self-defined API Hook Function.
As preferably, step S4 comprises:
S41, described interpreter reads described enciphered data;
S42, destination application first performs described self-defined API Hook Function, and described self-defined API Hook Function calls described hardware encipher equipment, and described hardware encipher equipment is decrypted described enciphered data thus obtains data decryption;
S43, described data decryption is submitted to described interpreter by described self-defined API Hook Function;
S44, described interpreter carries out decipher to described data decryption.
As preferably, described self-defined API Hook Function comprises a filter function, described filter function is configured to when described destination application runs by the api function filtering of described operating system, and described filter function is tied to described hardware encipher equipment to call described hardware encipher equipment simultaneously.
As preferably, remove that install or integrated described self-defined API Hook Function when described destination application exits.
As preferably, described hardware encipher equipment is encryption lock or USB flash disk lock.
As preferably, described self-defined API Hook Function is revised by importing table or the mode of Registry Modifications is installed in the described destination application under windows operating system or linux operating system.
Beneficial effect of the present invention is: utilize self-defined API Hook Function and hardware encipher equipment; do not affecting the exploitation of former scripted code; under not relating to the prerequisite of interpreter principle; the potential safety hazard solve poor stability in existing software code protection scheme, the scripted code of textual form can not being protected to produce by shell, simultaneously owing to by means of hardware encipher equipment thus improve the protection intensity to scripted code.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of the software code guard method of the embodiment of the present invention;
Fig. 2 is the schematic flow sheet of the step 3 of the software code guard method of the embodiment of the present invention;
Fig. 3 is the schematic flow sheet of the step 4 of the software code guard method of the embodiment of the present invention.
Embodiment
For making those skilled in the art understand the present invention better, first API (ApplicationProgrammingInterface) i.e. application programming interface is described.
API refers to that computer operating system (Operatingsystem) or routine library are supplied to the code of application call use.Its fundamental purpose allows Application developer be called one group of routine function, and need not consider the source code of its bottom or understand the details of its internal work mechanism.API itself is abstract, and it only defines an interface, and does not relate to the details such as how application program realizes.For example, WINDOWS operating system provides WINDOWSAPI, WINDOWSAPI is the System Programming interface for WINDOWS operating system family, it be a set of be used for control WINDOWS the outward appearance of all parts and a set of predefined WINDOWS function of behavior, each action of user can cause the operation of one or several function to tell what WINDOWS there occurs, the natural code of this similar WINDOWS to a certain extent, other language is only to provide the method for the automatic and easier access API of a kind of energy, every application program performed under WINDOWS working environment can call WINDOWSAPI.
With reference to the accompanying drawings embodiments of the invention are described in detail.
A kind of software code guard method of embodiments of the invention, as shown in Figure 1, comprises the following steps:
S1, carries out self-defined amendment at least one api function in the api function storehouse of operating system in advance and obtains self-defined API Hook Function, and itself and api function storehouse are mounted;
This self-defined API Hook Function can realize self-defining objective function, its hanging API function library makes redirect to perform this self-defined API Hook Function when operating system Using API Function storehouse, it should be noted that the parameter of self-defining function, return type, method of calling are preferably identical with the function in api function storehouse, this can realize corresponding objective function by the parameter obtaining parameter or Modification growth function very easily, and realizes without the need to the inside considering this self-defined API Hook Function;
S2, is installed to or is integrated in the destination application in terminal device under operating system by self-defined API Hook Function, described terminal device and hardware encipher equipment connection;
In the parallel port that hardware encipher equipment is plugged on terminal device usually or USB port, this terminal device is computing machine, panel computer or other smart machine;
S3, when being encrypted the scripted code be loaded in destination application, operational objective application program also first performs self-defined API Hook Function, calls hardware encipher equipment be encrypted acquisition enciphered data to the scripted code be loaded in destination application by self-defined API Hook Function;
S4, when needing the scripted code after to encryption to be decrypted, namely when enciphered data is read in operational objective application program process, first perform self-defined API Hook Function, call hardware encipher equipment by self-defined API Hook Function and rear acquisition data decryption is decrypted to enciphered data.
Above-mentioned hardware encipher equipment can be built-in with single chip circuit, the algorithm software being exclusively used in encryption is included in single-chip microcomputer, its processing power that there is judgement, analyze, and have anti-decryption capabilities initiatively, hardware encipher equipment can be encryption lock, USB flash disk lock, softdog or other encryption device.
In an embodiment of the invention, when performing above-mentioned steps S2, self-defined API Hook Function can check the running environment of hardware encipher equipment, thus the software runtime environment under guarantee operating system does not have mistake, hardware encipher equipment can normally identify, or hardware encipher equipment normally can submit registration to.
Step S3 can specifically comprise: S31, by independently interpreter stores scripts code in the interpreter of operating system or terminal device; S32, described destination application first performs self-defined API Hook Function, and self-defined API Hook Function calls hardware encipher equipment, and hardware encipher equipment is encrypted scripted code thus obtains enciphered data; S33, enciphered data is sent in destination application or is stored in hardware encipher equipment by self-defined API Hook Function.
Step S4 can specifically comprise: S41, and interpreter reads enciphered data but do not carry out decipher work to enciphered data (i.e. encryption after scripted code), and this interpreter is independently interpreter in the interpreter of operating system or terminal device; S42, above-mentioned steps S41 trigger destination application and first perform self-defined API Hook Function, and self-defined API Hook Function calls hardware encipher equipment, and hardware encipher equipment is decrypted enciphered data thus obtains data decryption; S43, data decryption is submitted to interpreter by self-defined API Hook Function; S44, interpreter data decryption is namely deciphered after scripted code carry out normal decipher and perform scripted code.
In an embodiment of the invention, when designing in advance, a filter function can be comprised in self-defined API Hook Function, filter function be configured to when destination application runs by original for operating system api function filtering (be not delete, but shielding), make destination application first can perform self-defined API Hook Function, filter function is tied to hardware encipher equipment to call hardware encipher equipment simultaneously.
In another embodiment, user can be pointed out installation or integrated self-defined API Hook Function whether is removed when destination application exits.Such as when no longer needing the operation being encrypted scripted code or deciphering, user optionally can remove self-defined API Hook Function to reduce taking system resource, improves the operational efficiency of operating system.
Self-defined API Hook Function can be installed and use under several operation systems environment in the present invention, such as self-defined API Hook Function can be revised by importing table or the mode of Registry Modifications is installed in the destination application under windows operating system or linux operating system, this installation process easily realizes.
By software code guard method provided by the present invention especially to the guard method of scripted code; self-defined API Hook Function is loaded in destination application and performs; this process does not affect the exploitation to scripted code itself; have nothing to do with interpreter principle thus simplify step and improve versatility; solve scripted code usually to exist in the form of text and the potential safety hazard brought; simultaneously owing to employing hardware encipher equipment when being encrypted scripted code, this makes to obtain effective raising to the protection intensity of scripted code.
Above embodiment is only exemplary embodiment of the present invention, and be not used in restriction the present invention, protection scope of the present invention is defined by the claims.Those skilled in the art can in essence of the present invention and protection domain, and make various amendment or equivalent replacement to the present invention, this amendment or equivalent replacement also should be considered as dropping in protection scope of the present invention.
Claims (8)
1. a software code guard method, is characterized in that, comprises the following steps:
S1, carries out self-defined amendment at least one api function in the api function storehouse of operating system in advance and obtains self-defined API Hook Function, and itself and described api function storehouse are mounted;
S2, is installed to or is integrated in the destination application in terminal device under operating system by described self-defined API Hook Function, described terminal device and hardware encipher equipment connection;
S3, when being encrypted the scripted code be loaded in described destination application, run described destination application and first perform described self-defined API Hook Function, calling described hardware encipher equipment by described self-defined API Hook Function and acquisition enciphered data is encrypted to the scripted code be loaded in described destination application;
S4, when being decrypted described enciphered data, run described destination application and first perform described self-defined API Hook Function, calling described hardware encipher equipment by described self-defined API Hook Function and rear acquisition data decryption is decrypted to described enciphered data.
2. software code guard method according to claim 1, it is characterized in that, step S2 comprises: the running environment of described self-defined API Hook Function to described hardware encipher equipment checks.
3. software code guard method according to claim 1, it is characterized in that, step S3 comprises:
S31, by the interpreter of described operating system or described terminal device independently interpreter store described scripted code;
S32, described destination application first performs described self-defined API Hook Function, and described self-defined API Hook Function calls described hardware encipher equipment, and described hardware encipher equipment is encrypted described scripted code thus obtains described enciphered data;
S33, described enciphered data is sent to described destination application or is stored in described hardware encipher equipment by described self-defined API Hook Function.
4. software code guard method according to claim 3, it is characterized in that, step S4 comprises:
S41, described interpreter reads described enciphered data;
S42, destination application first performs described self-defined API Hook Function, and described self-defined API Hook Function calls described hardware encipher equipment, and described hardware encipher equipment is decrypted described enciphered data thus obtains data decryption;
S43, described data decryption is submitted to described interpreter by described self-defined API Hook Function;
S44, described interpreter carries out decipher to described data decryption.
5. software code guard method according to claim 1; it is characterized in that; described self-defined API Hook Function comprises a filter function; described filter function is configured to when described destination application runs by the api function filtering of described operating system, and described filter function is tied to described hardware encipher equipment to call described hardware encipher equipment simultaneously.
6. software code guard method according to claim 1, is characterized in that, removes that install or integrated described self-defined API Hook Function when described destination application exits.
7. software code guard method according to claim 1, is characterized in that, described hardware encipher equipment is encryption lock or USB flash disk lock.
8. software code guard method according to claim 1; it is characterized in that, described self-defined API Hook Function is revised by importing table or the mode of Registry Modifications is installed in the described destination application under windows operating system or linux operating system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510845479.3A CN105303073B (en) | 2015-11-26 | 2015-11-26 | Software code guard method |
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| CN201510845479.3A CN105303073B (en) | 2015-11-26 | 2015-11-26 | Software code guard method |
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| CN105303073B CN105303073B (en) | 2018-07-06 |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106407800A (en) * | 2016-09-20 | 2017-02-15 | 腾讯科技（深圳）有限公司 | A hook method and a terminal device |
| CN107122631A (en) * | 2017-04-26 | 2017-09-01 | 北京洋浦伟业科技发展有限公司 | The transparent encryption method and device of a kind of script file |
| CN107784231A (en) * | 2016-08-24 | 2018-03-09 | 北京花甲科技有限公司 | The execution of instruction and on-the-flier compiler method, apparatus and electronic equipment |
| CN108228411A (en) * | 2016-12-14 | 2018-06-29 | 北京国双科技有限公司 | A kind of method and mobile terminal of the monitoring of APP interfaces |
| WO2019000736A1 (en) * | 2017-06-30 | 2019-01-03 | 武汉斗鱼网络科技有限公司 | File encryption method and device, computer readable storage medium and apparatus |
| WO2019000737A1 (en) * | 2017-06-30 | 2019-01-03 | 武汉斗鱼网络科技有限公司 | File decryption method and device, computer readable storage medium and apparatus |
| CN109409033A (en) * | 2018-09-11 | 2019-03-01 | 平安科技（深圳）有限公司 | Code encryption method, apparatus, computer installation and storage medium |
| CN110688161A (en) * | 2018-07-06 | 2020-01-14 | 英研智能移动股份有限公司 | Peripheral hardware operation method and system |
| CN112395597A (en) * | 2019-08-15 | 2021-02-23 | 奇安信安全技术(珠海)有限公司 | Method and device for detecting website application vulnerability attack and storage medium |
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| US20090094601A1 (en) * | 2006-04-27 | 2009-04-09 | Vstovskiy Vladimir Nikitich | Method and device for protecting software from unauthorized use |
| CN104252593A (en) * | 2013-06-27 | 2014-12-31 | 贝壳网际（北京）安全技术有限公司 | Script monitoring method and device |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107784231A (en) * | 2016-08-24 | 2018-03-09 | 北京花甲科技有限公司 | The execution of instruction and on-the-flier compiler method, apparatus and electronic equipment |
| CN107784231B (en) * | 2016-08-24 | 2021-06-08 | 顶象科技有限公司 | Instruction execution and dynamic compiling method and device and electronic equipment |
| CN106407800A (en) * | 2016-09-20 | 2017-02-15 | 腾讯科技（深圳）有限公司 | A hook method and a terminal device |
| CN108228411A (en) * | 2016-12-14 | 2018-06-29 | 北京国双科技有限公司 | A kind of method and mobile terminal of the monitoring of APP interfaces |
| CN107122631A (en) * | 2017-04-26 | 2017-09-01 | 北京洋浦伟业科技发展有限公司 | The transparent encryption method and device of a kind of script file |
| WO2019000736A1 (en) * | 2017-06-30 | 2019-01-03 | 武汉斗鱼网络科技有限公司 | File encryption method and device, computer readable storage medium and apparatus |
| WO2019000737A1 (en) * | 2017-06-30 | 2019-01-03 | 武汉斗鱼网络科技有限公司 | File decryption method and device, computer readable storage medium and apparatus |
| CN110688161A (en) * | 2018-07-06 | 2020-01-14 | 英研智能移动股份有限公司 | Peripheral hardware operation method and system |
| CN109409033A (en) * | 2018-09-11 | 2019-03-01 | 平安科技（深圳）有限公司 | Code encryption method, apparatus, computer installation and storage medium |
| CN112395597A (en) * | 2019-08-15 | 2021-02-23 | 奇安信安全技术(珠海)有限公司 | Method and device for detecting website application vulnerability attack and storage medium |
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|---|---|
| CN105303073B (en) | 2018-07-06 |
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