CN105260627A - Anti-copy method for embedded device program - Google Patents
Anti-copy method for embedded device program Download PDFInfo
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- CN105260627A CN105260627A CN201510601362.0A CN201510601362A CN105260627A CN 105260627 A CN105260627 A CN 105260627A CN 201510601362 A CN201510601362 A CN 201510601362A CN 105260627 A CN105260627 A CN 105260627A
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- Prior art keywords
- program
- information
- license information
- embedded device
- authorization
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- 238000000034 method Methods 0.000 title claims abstract description 39
- 238000013475 authorization Methods 0.000 claims abstract description 24
- 238000004364 calculation method Methods 0.000 description 2
- 238000012790 confirmation Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000011982 device technology Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000000047 product Substances 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
Abstract
The invention relates to an anti-copy method for an embedded device program. The method comprises: firstly, storing an embedded device ID and License information in a hidden region, and reading device ID information to an RAM region from the hidden region after the device program performs authorization; secondly, calculating the License information according to the read device ID information and an authorization algorithm; and finally, comparing the calculated License information with the License information in the hidden region, and if the calculated License information is the same as the License information in the hidden region, the program entering a running state, or otherwise, performing authorization requesting. According to the method, the ID and the License are stored in the hidden region and technically protected, and the program is subjected to authorization management through the ID and the License; and the program stealer does not have a password, so that the hidden region cannot be accessed, data copy also cannot be realized, and further the program is protected. The method is simple and feasible, and can effectively protect an authorization process only by processing a storage mechanism of the ID and the License information without the need for complex encryption and decryption of the algorithm and addition of an anti-copy mechanism in a process and a thread.
Description
Technical field
The present invention relates to a kind of anti-copy method of embedded device program, belong to embedded device technology field.
Background technology
Embedded system program adopts method for customizing writing station, for in the large-scale system such as control, monitoring arrangement, factory, along with the expansion of its application, its pirate risk also increases thereupon, and being necessary provides a kind of method of embedded program anti-copy to take precautions against this risk.And have at present authorize protection program operational scheme as shown in Figure 1, device authorization validity calculation procedure identification id and License information, get final product working procedure after confirmation.ID and License information is generally stored in ROM (read-only memory); be written into when dispatching from the factory; larger by hardware constraints; although and add authorize protection effectively can control illegal copies; but the License information of authorizing easily is cracked, numerous hack tools of existence support that ID computing is License information.Therefore be necessary to provide a kind of effective means to protect ID and License, improve the anti-copy ability of program, and then reduce pirate risk.
Such as CN201110389076.4 discloses a kind of anti-copying system based on process threads and anti-copy storage medium, deciphering module is loaded by arranging anti-copy bootstrap module, anti-copy nucleus module and anti-copy volume in anti-copy storage medium, by the compounding practice of three modules, ensure that anti-copy information cannot be illegally duplicated under any situation; The elementary cell of information security anti-copy technology is locked as basic performance element one process and the thread of current existence in operating system; in conjunction with corresponding anti-copy storage medium technology; anti-copy movable storage medium data structure as shown in Figure 2; launch all security perimeters with this, thus reach the protection data of user and media asset is not illegally duplicated, copies and the object of piracy.User needed the document of copyright protection and content protecting and data through encryption, be kept in anti-copy storage medium in out of order mode; the product unique information of storage medium and user cipher are as the key opening anti-copy volume, and the coding rule of secret key is subject to the supervision of process and thread in code.Therefore this mode by mechanism carries out the protection of program, and algorithm is complicated, and in order to consider anti-copy, in process and thread, add anti-copy mechanism, implementation procedure is loaded down with trivial details.
Summary of the invention
The object of this invention is to provide a kind of anti-copy method of embedded device program, to realize the multiple protective to device authorization program.
The present invention provides a kind of anti-copy method of embedded device program for achieving the above object, and this anti-copy method comprises the following steps:
1) embedded equipment I D and License information are stored in hidden area;
2) licensing status of embedded device program is judged, from hidden area fetch equipment id information to ram region after embedded device program authorization;
3) License information is calculated according to fetch equipment id information and authorization Algorithm;
4) by the License information comparison of the License information that calculates and hidden area, if both are identical, then program enters running status, otherwise, need authorization requests be carried out.
The hidden area that described device id and License information store only authoring program can be accessed.
The offset address of described device id information in RAM is random, and has uniqueness.
In described RAM, device id and License information are deposited program point power down and are not preserved, and cannot copy.
The path that described device id and License information are stored in hidden area is determined when program write ID, nondeclarative memory be its relative path.
When described id information reads ram region, its side-play amount is determined along with the real work situation of RAM, and its side-play amount is open to program, and program can read the id information in RAM according to side-play amount.
Described step 2) in be carry out judgment device program by the authorization flag position of device program whether to be in licensing status.
The invention has the beneficial effects as follows: first embedded equipment I D and License information are stored in hidden area by the present invention, from hidden area fetch equipment id information to ram region after device program mandate, then License information is calculated according to fetch equipment id information and authorization Algorithm, finally by the License information comparison of the License information that calculates and hidden area, if both are identical, then program enters running status, otherwise, need authorization requests be carried out.ID and License is stored in hidden area by the present invention, carries out technical protection to it, then carries out empowerment management by ID and License to program; even if stolen program; owing to not having password to access hidden area, also cannot realize data copy, and then realize the protection to program.The method is simple, without the need to the encryption and decryption of algorithm complexity, also without the need to increasing anti-copy mechanism in process and thread, only can need realize carrying out available protecting to licensing process by carrying out process to the memory mechanism of ID and License information.
Accompanying drawing explanation
Fig. 1 has the program flow chart of authorizing protection at present;
Fig. 2 is anti-copy movable storage medium data structure diagram in prior art;
Fig. 3 is anti-copy authorization flow figure of the present invention;
Fig. 4 is ID and License storage position information schematic diagram in the embodiment of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described further.
ID and License information is stored in hidden area by the anti-copy method of embedded device program proposed by the invention; it is protected; hidden area is entered after device program license confirmation; fetch equipment ID is to ram region; in ram region, calculate License in conjunction with ID offset information and authorization Algorithm, finally the License of the License calculated and hidden area is compared; only when both are consistent, program just enters running status.
Being described for a certain embedded device program below, is unauthorized state when the mandate flag of this embedded device program is OX00, for being licensing status during OX01; Device program mark is as ID=97 (by authorization server stochastic generation in real work); Corresponding authorization code is abcdef, leaves hidden area in; The memory capacity of RAM is 16K × 8, as shown in Figure 4.As shown in Figure 3, specific implementation process is as follows for the process of this embedded device program anti-copy:
1. embedded equipment I D and License information are stored in hidden area.
The path that device id and License information are stored in hidden area is determined when program write ID, nondeclarative memory be its relative path.The hidden area that device id and License information store only authoring program can be accessed, and hidden area is not limited to the storage medium such as internal memory, hard disk.
2. the licensing status of judgment device program, from hidden area fetch equipment id information to ram region after device program mandate.
This process is by checking that device program authorization flag position is carried out judgment device and whether is in licensing status, be unauthorized state when in the present embodiment, the mandate flag of device program is OX00, for being licensing status during OX01, when authorizing flag to be OX00, carry out authorization requests, when authorizing flag to be OX01, read this device id information to ram region.
The offset address of ID in RAM is random, has uniqueness, and when ID reads ram region, its side-play amount is indefinite along with the real work situation of RAM, and its side-play amount is open to program, and program reads id information in RAM according to side-play amount.According to relative path during write ID in the present embodiment, read ID=97 to ram region from hidden area, memory address is between scope [0000H ~ 3FFFH].
3. calculate License information according to fetch equipment id information and authorization Algorithm.
In ram region, jointly calculate License in conjunction with id information and authorization Algorithm, in RAM, ID and License information is deposited program point power down and is not preserved, and cannot copy.
In the present embodiment in RAM according to above-mentioned memory address, reading ID and calculating with ID is continuous print six number of first place, namely 97,98,99,100,101,102; Show that License is abcdef according to the form of ASCII character.
4 by the License information comparison of the License information that calculates and hidden area, if both are identical, then program enters running status, otherwise, need authorization requests be carried out.
In the present embodiment when inputting License and equaling abcdef, illustrate that device is normal, and authorize, program enters running status, when inputting License and being not equal to abcdef, sends authorization requests.
By said process, the present invention has multiple protective to device authorization validity calculation procedure, and first ID and License information is stored in hidden area, only has authoring program may have access to; Secondly id information uncertain id information that prevents of address in RAM is copied; The License simultaneously calculated according to device id information and certain algorithm is unique, when hardware and program are imitated simultaneously, do not have License to decipher and also cannot run.
Claims (7)
1. an anti-copy method for embedded device program, is characterized in that, this anti-copy method comprises the following steps:
1) embedded equipment I D and License information are stored in hidden area;
2) licensing status of embedded device program is judged, from hidden area fetch equipment id information to ram region after embedded device program authorization;
3) License information is calculated according to fetch equipment id information and authorization Algorithm;
4) by the License information comparison of the License information that calculates and hidden area, if both are identical, then program enters running status, otherwise, need authorization requests be carried out.
2. the anti-copy method of embedded device program according to claim 1, is characterized in that, the hidden area that described device id and License information store only authoring program can be accessed.
3. the anti-copy method of embedded device program according to claim 2, is characterized in that, the offset address of described device id information in RAM is random, and has uniqueness.
4. the anti-copy method of embedded device program according to claim 3, is characterized in that, in described RAM, device id and License information are deposited program point power down and do not preserved, and cannot copy.
5. the anti-copy method of embedded device program according to claim 4, is characterized in that, the path that described device id and License information are stored in hidden area is determined when program write ID, nondeclarative memory be its relative path.
6. the anti-copy method of embedded device program according to claim 5, it is characterized in that, when described id information reads ram region, its side-play amount is determined along with the real work situation of RAM, its side-play amount is open to program, and program can read the id information in RAM according to side-play amount.
7. the anti-copy method of the embedded device program according to any one of claim 1-6, is characterized in that, described step 2) in be carry out judgment device program by the authorization flag position of device program whether to be in licensing status.
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| CN201510601362.0A CN105260627B (en) | 2015-09-18 | 2015-09-18 | A kind of anti-copy method of embedded device program |
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| CN201510601362.0A CN105260627B (en) | 2015-09-18 | 2015-09-18 | A kind of anti-copy method of embedded device program |
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| CN105260627A true CN105260627A (en) | 2016-01-20 |
| CN105260627B CN105260627B (en) | 2018-06-12 |
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| CN104978598A (en) * | 2015-07-02 | 2015-10-14 | 上海坤锐电子科技有限公司 | Active radio-frequency identification tag with anti-transfer function |
| CN106845164A (en) * | 2017-02-04 | 2017-06-13 | 深圳泰科晶显科技有限公司 | One kind is based on network software authorization method |
| CN106874775A (en) * | 2016-12-26 | 2017-06-20 | 深圳市风云实业有限公司 | A kind of Implementation of Embedded System method of anti-copying |
| CN109150834A (en) * | 2018-07-20 | 2019-01-04 | 武汉虹信通信技术有限责任公司 | A kind of embedded device license authorization management method |
| CN109657425A (en) * | 2018-12-10 | 2019-04-19 | 积成电子股份有限公司 | A kind of scene protection method of electric energy list procedure |
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| CN105260627B (en) | 2018-06-12 |
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