CN107832588A - A kind of anti-method and apparatus and computer-readable storage medium divulged a secret of Flash - Google Patents
A kind of anti-method and apparatus and computer-readable storage medium divulged a secret of Flash Download PDFInfo
- Publication number
- CN107832588A CN107832588A CN201711146076.5A CN201711146076A CN107832588A CN 107832588 A CN107832588 A CN 107832588A CN 201711146076 A CN201711146076 A CN 201711146076A CN 107832588 A CN107832588 A CN 107832588A
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- Prior art keywords
- digital signature
- flash chip
- chip
- flash
- region
- 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.)
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- 238000000034 method Methods 0.000 title claims abstract description 29
- 238000013475 authorization Methods 0.000 claims description 7
- 238000004590 computer program Methods 0.000 claims description 7
- 230000006870 function Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000003466 anti-cipated effect Effects 0.000 description 1
- 238000013473 artificial intelligence Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000003672 processing method Methods 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
- G06F21/123—Restricting unauthorised execution of programs by using dedicated hardware, e.g. dongles, smart cards, cryptographic processors, global positioning systems [GPS] devices
-
- 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
- G06F21/70—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer
- G06F21/78—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer to assure secure storage of data
- G06F21/79—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer to assure secure storage of data in semiconductor storage media, e.g. directly-addressable memories
Abstract
The embodiment of the present invention proposes a kind of anti-method and apparatus and computer-readable storage medium divulged a secret of Flash, applied to Flash chip, initial storage has Magic number and is provided with digital signature region in the Flash chip, each Flash chip corresponding each unique chip id, this method include:When detect establish machine by cable in Flash chip when, judge whether the Flash chip is to first power on;If the determination result is YES, then the chip id of the Flash chip is obtained, and digital signature is generated based on acquired chip id;The digital signature is stored in the digital signature region, and the Magic number in the Flash chip is wiped.With this, the program to ensure on Flash can only be operated on unique Flash, and by the setting of Magic number, is improved the difficulty that Flash chip is restored to original state, improved the security of data.
Description
Technical field
The present invention relates to data security arts, the anti-method and apparatus and computer divulged a secret of more particularly to a kind of Flash
Storage medium.
Background technology
In the prior art, program is each Flash (full name Flash EEPROM, also known as flash memory, being a kind of storage chip)
It can be easy to by direct copying and operation, in this way, causing to be easy to by direct pirate and clone, and then cause factory
The loss of business.
The content of the invention
For in the prior art the defects of, the present invention proposes a kind of anti-method and apparatus divulged a secret of Flash and calculating
Machine storage medium, the program to ensure on Flash can only be operated on unique Flash, improve the security of data.
Specifically, the present invention proposes embodiment in detail below:
One embodiment of the present of invention proposes a kind of anti-methods divulged a secret of Flash, described applied to Flash chip
Initial storage has Magic number and is provided with digital signature region in Flash chip, and each Flash chip is corresponding each unique
Chip id, this method includes:
When detect establish machine by cable in Flash chip when, judge whether the Flash chip is to first power on;
If the determination result is YES, then the chip id of the Flash chip is obtained, and number is generated based on acquired chip id
Word is signed;
The digital signature is stored in the digital signature region, and the Magic number in the Flash chip is wiped
Remove.
In a specific embodiment, " judging whether the Flash chip is to first power on ", including:
Judge in the Flash chip with the presence or absence of having Magic number and digital signature region with the presence or absence of there are digital label
Name;
If judged result is has Magic number, and digital signature is not present in digital signature region, it is determined that the Flash cores
Piece is to first power on;
If judged result is digital signature be present in the absence of Magic number or digital signature region, it is determined that the Flash cores
Piece does not first power on.
In a specific embodiment, pre-set programs are also stored with the Flash chip;This method also includes:
When it is not to first power on to judge the Flash chip, the chip id of the Flash chip is obtained, and be based on institute
The chip id generation digital signature of acquisition;
Compare in generated digital signature and the Flash chip the existing digital signature in digital signature region whether one
Cause;
If judged result is consistent, the pre-set programs that are stored in Flash chip described in Authorization execution.
In a specific embodiment, in addition to:When the digital signature generated and numeral in the Flash chip are signed
When the existing digital signature in name region is inconsistent, then the Flash chip is restarted.
In a specific embodiment, the digital signature region is in an initial condition sky;
After the Magic number in the Flash chip is wiped, the Magic number is stored in the Flash chip
Storage region is sky.
One embodiment of the present of invention proposes a kind of anti-equipment divulged a secret of Flash, described applied to Flash chip
Initial storage has Magic number and is provided with digital signature region in Flash chip, and each Flash chip is corresponding each unique
Chip id, the equipment includes:
Judge module, for when detect establish machine by cable in Flash chip when, judge whether the Flash chip is first
Start;
Generation module, for when judged result is to be, obtaining the chip id of the Flash chip, and based on acquired
Chip id generation digital signature;
Module is wiped, for storing the digital signature in the digital signature region, and by the Flash chip
Magic number is wiped.
In a specific embodiment, the judge module " judging whether the Flash chip is to first power on ", bag
Include:
Judge in the Flash chip with the presence or absence of having Magic number and digital signature region with the presence or absence of there are digital label
Name;
If judged result is has Magic number, and digital signature is not present in digital signature region, it is determined that the Flash cores
Piece is to first power on;
If judged result is digital signature be present in the absence of Magic number or digital signature region, it is determined that the Flash cores
Piece does not first power on.
In a specific embodiment, pre-set programs are also stored with the Flash chip;The equipment also includes:
Processing module, for when it is not to first power on to judge the Flash chip, obtaining the core of the Flash chip
Piece ID, and digital signature is generated based on acquired chip id;
Compare in generated digital signature and the Flash chip the existing digital signature in digital signature region whether one
Cause;
If judged result is consistent, the pre-set programs that are stored in Flash chip described in Authorization execution.
In a specific embodiment, in addition to:
Module is restarted, for working as generated digital signature and the existing number in digital signature region in the Flash chip
When word signature is inconsistent, then the Flash chip is restarted.
One embodiment of the present of invention also proposed a kind of computer-readable storage medium, be stored in the computer-readable storage medium
There is computer program, applied to Flash chip, initial storage has Magic number and is provided with digital label in the Flash chip
Name region, the corresponding each unique chip id of each Flash chip, the computer program are used to perform below scheme:
Flow A, when detect establish machine by cable in Flash chip when, judge whether the Flash chip is to first power on;
Flow B, if the determination result is YES, then obtain the chip id of the Flash chip, and based on acquired chip id
Generate digital signature;
Flow C, store the digital signature in the digital signature region, and by the Magic number in the Flash chip
Wiped.
With this, the embodiment of the present invention proposes a kind of anti-method and apparatus and computer-readable storage medium divulged a secret of Flash,
Applied to Flash chip, initial storage has Magic number and is provided with digital signature region in the Flash chip, each described
Flash chip corresponding each unique chip id, this method include:When detect establish machine by cable in Flash chip when, described in judgement
Whether Flash chip is to first power on;If the determination result is YES, then the chip id of the Flash chip is obtained, and is based on being obtained
The chip id generation digital signature taken;The digital signature is stored in the digital signature region, and by the Flash chip
Magic number wiped.With this, the program to ensure on Flash can only be operated on unique Flash, and passes through magic
The setting of word, the difficulty that Flash chip is restored to original state is improved, improve the security of data.
Brief description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below by embodiment it is required use it is attached
Figure is briefly described, it will be appreciated that the following drawings illustrate only certain embodiments of the present invention, therefore be not construed as pair
The restriction of scope, for those of ordinary skill in the art, on the premise of not paying creative work, can also be according to this
A little accompanying drawings obtain other related accompanying drawings.
Fig. 1 is the schematic flow sheet for a kind of anti-methods divulged a secret of Flash that the embodiment of the present invention proposes;
Fig. 2 is the signal of Flash chip memory space in a kind of anti-methods divulged a secret of Flash that the embodiment of the present invention proposes
Figure;
Fig. 3 is the schematic flow sheet for a kind of anti-methods divulged a secret of Flash that the embodiment of the present invention proposes;
Fig. 4 is a kind of structural representation for the anti-equipment divulged a secret of Flash that the embodiment of the present invention proposes.
Embodiment
Hereinafter, the various embodiments of the disclosure will be described more fully.The disclosure can have various embodiments, and
It can adjust and change wherein.It should be understood, however, that:It is limited to spy disclosed herein in the absence of by the various embodiments of the disclosure
Determine the intention of embodiment, but the disclosure should be interpreted as covering in the spirit and scope for the various embodiments for falling into the disclosure
All adjustment, equivalent and/or alternatives.
Hereinafter, disclosed in the term " comprising " that can be used in the various embodiments of the disclosure or " may include " instruction
Function, operation or the presence of element, and do not limit the increase of one or more functions, operation or element.In addition, such as exist
Used in the various embodiments of the disclosure, term " comprising ", " having " and its cognate are meant only to represent special characteristic, number
Word, step, operation, the combination of element, component or foregoing item, and be understood not to exclude first one or more other
Feature, numeral, step, operation, element, component or foregoing item combination presence or one or more features of increase, numeral,
Step, operation, element, component or foregoing item combination possibility.
In the various embodiments of the disclosure, stating "or" or " at least one in A or/and B " includes what is listed file names with
Any combinations of word or all combinations.For example, " A or B " or " at least one in A or/and B " may include A, may include for statement
B may include A and B both.
The statement (" first ", " second " etc.) used in the various embodiments of the disclosure can be modified in various implementations
Various element in example, but respective sets can not be limited into element.For example, presented above be not intended to limit the suitable of the element
Sequence and/or importance.The purpose presented above for being only used for differentiating an element and other elements.For example, the first user fills
Put and indicate different user device with second user device, although the two is all user's set.For example, each of the disclosure is not being departed from
In the case of the scope of kind embodiment, the first element is referred to alternatively as the second element, and similarly, the second element is also referred to as first
Element.
It should be noted that:, can be by the first composition member if an element ' attach ' to another element by description
Part is directly connected to the second element, and " connection " the 3rd can be formed between the first element and the second element
Element.On the contrary, when an element " being directly connected to " is arrived into another element, it will be appreciated that be in the first element
And second be not present the 3rd element between element.
The term " user " used in the various embodiments of the disclosure, which may indicate that, to be used the people of electronic installation or uses electricity
The device (for example, artificial intelligence electronic installation) of sub-device.
The term used in the various embodiments of the disclosure is only used for describing the purpose of specific embodiment and not anticipated
In the various embodiments of the limitation disclosure.As used herein, singulative is intended to also include plural form, unless context is clear
Chu it is indicated otherwise.Unless otherwise defined, all terms (including the technical term and scientific terminology) tool being otherwise used herein
There is the implication identical implication that the various embodiment one skilled in the art with the disclosure are generally understood that.The term
(term such as limited in the dictionary typically used) is to be interpreted as having and the situational meaning in correlative technology field
Identical implication and the implication with Utopian implication or overly formal will be not construed as, unless in the various of the disclosure
It is clearly defined in embodiment.
Embodiment 1
The embodiment of the present invention 1 discloses a kind of anti-methods divulged a secret of Flash, applied to Flash chip, the Flash cores
Initial storage has Magic number and is provided with digital signature region in piece, the corresponding each unique chip of each Flash chip
ID, as shown in figure 1, this method includes:
Step 101, when detect establish machine by cable in Flash chip when, judge whether the Flash chip is to first power on;
Step 102, if the determination result is YES, then obtain the chip id of the Flash chip, and based on acquired chip
ID generates digital signature;
Step 103, store the digital signature in the digital signature region, and by the magic in the Flash chip
Word is wiped.
Specifically, as shown in FIG. 2 and 3, by the information that each memory space stores in Flash chip, wherein, storage
Space includes storage region, the storage region of Magic number, the storage region of digital signature of program header, the storage of effective procedure section
Region, is the state before first powering on Fig. 1 left side, and the right is then the state after first powering on, specifically, Magic number and
Digital signature can change, and before first powering on, have Magic number, and region corresponding to digital signature is then without numeral label
Name;After first powering on, the digital signature that Magic number is wiped free of and generated is stored in corresponding digital signature region.
Specific Magic number is the character string of a string of features, there is the recognition rule of itself, and corresponding digital signature is also,
With the presence of corresponding recognition rule.
In a specific embodiment, " judging whether the Flash chip is to first power on " in step 101, bag
Include:
Judge in the Flash chip with the presence or absence of having Magic number and digital signature region with the presence or absence of there are digital label
Name;
If judged result is has Magic number, and digital signature is not present in digital signature region, it is determined that the Flash cores
Piece is to first power on;
If judged result is digital signature be present in the absence of Magic number or digital signature region, it is determined that the Flash cores
Piece does not first power on.
In a specific embodiment, as shown in figure 3, being also stored with pre-set programs in the Flash chip;This method
Also include:
When it is not to first power on to judge the Flash chip, the chip id of the Flash chip is obtained, and be based on institute
The chip id generation digital signature of acquisition;
Compare in generated digital signature and the Flash chip the existing digital signature in digital signature region whether one
Cause;
If judged result is consistent, the pre-set programs that are stored in Flash chip described in Authorization execution.
In a specific embodiment, this method also includes:When in the digital signature and the Flash chip generated
When the existing digital signature in digital signature region is inconsistent, then the Flash chip is restarted.
In a specific embodiment, the digital signature region is in an initial condition sky;
After the Magic number in the Flash chip is wiped, the Magic number is stored in the Flash chip
Storage region is sky.
In a specific embodiment, comprise the following steps:
The program being just as in step 1, programming to flash, as shown in Fig. 2 left sides, the inside have one group it is particularly magic
The place of art word and one section of storage signature.
After step 2, start, judged according to the place of Magic number and storage signature, if it is to start shooting for the first time, if
Start shooting for the first time.Step 3 is then performed, otherwise directly performs step 4.
Step 3, read Chip ID, using Chip ID through a kind of processing method (such as:Chip ID as signature
The input key of model, is signed) signature of the chip is drawn, signature is saved in storage signature place in flash.
Step 4, signature 1 is read from flash, then read Chip ID, using step 3 identical method, calculate signature
2, compare signature 1 and whether signature 2 matches, if it does, then performing step 5, no person's chip is restarted immediately.
Step 5, perform down-stream.
With this, each program is realized after powering, can only be run on corresponding unique chip, even if program is copied
To another platform, can not also run.Using Magic number and full Flash memory space, using Flash characteristic, do not have to
Whole Flash blocks are wiped, can also directly update Flash content, reduce the risk that Flash is write when starting shooting for the first time.Evil spirit
The setting of art word, it is ensured that hacker can not recover the Flash patterns before start for the first time easily so that crack difficulty increasing.
Embodiment 2
The embodiment of the present invention 2 also discloses a kind of anti-equipment divulged a secret of Flash, applied to Flash chip, the Flash
Initial storage has Magic number and is provided with digital signature region in chip, the corresponding each unique core of each Flash chip
Piece ID, as shown in figure 4, the equipment includes:
Judge module 201, for when detect establish machine by cable in Flash chip when, judge the Flash chip whether headed by
Secondary start;
Generation module 202, for when judged result is to be, obtaining the chip id of the Flash chip, and be based on being obtained
The chip id generation digital signature taken;
Module 203 is wiped, for storing the digital signature in the digital signature region, and by the Flash chip
In Magic number wiped.
In a specific embodiment, the judge module 201 " judges whether the Flash chip is to open first
Machine ", including:
Judge in the Flash chip with the presence or absence of having Magic number and digital signature region with the presence or absence of there are digital label
Name;
If judged result is has Magic number, and digital signature is not present in digital signature region, it is determined that the Flash cores
Piece is to first power on;
If judged result is digital signature be present in the absence of Magic number or digital signature region, it is determined that the Flash cores
Piece does not first power on.
In a specific embodiment, pre-set programs are also stored with the Flash chip;The equipment also includes:
Processing module 204, for when it is not to first power on to judge the Flash chip, obtaining the Flash chip
Chip id, and digital signature is generated based on acquired chip id;
Compare in generated digital signature and the Flash chip the existing digital signature in digital signature region whether one
Cause;
If judged result is consistent, the pre-set programs that are stored in Flash chip described in Authorization execution.
In a specific embodiment, in addition to:
Module is restarted, for working as generated digital signature and the existing number in digital signature region in the Flash chip
When word signature is inconsistent, then the Flash chip is restarted.
Embodiment 3
The embodiment of the present invention 3 also discloses a kind of computer-readable storage medium, and meter is stored with the computer-readable storage medium
Calculation machine program, applied to Flash chip, initial storage has Magic number and is provided with digital signature field in the Flash chip
Domain, the corresponding each unique chip id of each Flash chip, the computer program are used to perform below scheme:
Flow A, when detect establish machine by cable in Flash chip when, judge whether the Flash chip is to first power on;
Flow B, if the determination result is YES, then obtain the chip id of the Flash chip, and based on acquired chip id
Generate digital signature;
Flow C, store the digital signature in the digital signature region, and by the Magic number in the Flash chip
Wiped.
In a specific embodiment, " judging whether the Flash chip is to first power on ", including:
Judge in the Flash chip with the presence or absence of having Magic number and digital signature region with the presence or absence of there are digital label
Name;
If judged result is has Magic number, and digital signature is not present in digital signature region, it is determined that the Flash cores
Piece is to first power on;
If judged result is digital signature be present in the absence of Magic number or digital signature region, it is determined that the Flash cores
Piece does not first power on.
In a specific embodiment, pre-set programs are also stored with the Flash chip;The computer program is also used
In execution below scheme:
When it is not to first power on to judge the Flash chip, the chip id of the Flash chip is obtained, and be based on institute
The chip id generation digital signature of acquisition;
Compare in generated digital signature and the Flash chip the existing digital signature in digital signature region whether one
Cause;
If judged result is consistent, the pre-set programs that are stored in Flash chip described in Authorization execution.
In a specific embodiment, the computer program is additionally operable to perform below scheme:When the numeral label generated
When name and the inconsistent existing digital signature in digital signature region in the Flash chip, then the Flash chip is restarted.
In a specific embodiment, the digital signature region is in an initial condition sky;
After the Magic number in the Flash chip is wiped, the Magic number is stored in the Flash chip
Storage region is sky.
With this, the embodiment of the present invention proposes a kind of anti-method and apparatus and computer-readable storage medium divulged a secret of Flash,
Applied to Flash chip, initial storage has Magic number and is provided with digital signature region in the Flash chip, each described
Flash chip corresponding each unique chip id, this method include:When detect establish machine by cable in Flash chip when, described in judgement
Whether Flash chip is to first power on;If the determination result is YES, then the chip id of the Flash chip is obtained, and is based on being obtained
The chip id generation digital signature taken;The digital signature is stored in the digital signature region, and by the Flash chip
Magic number wiped.With this, the program to ensure on Flash can only be operated on unique Flash, and passes through magic
The setting of word, the difficulty that Flash chip is restored to original state is improved, improve the security of data.
It will be appreciated by those skilled in the art that accompanying drawing is a schematic diagram for being preferable to carry out scene, module in accompanying drawing or
Flow is not necessarily implemented necessary to the present invention.
It will be appreciated by those skilled in the art that the module in device in implement scene can be described according to implement scene into
Row is distributed in the device of implement scene, can also carry out one or more dresses that respective change is disposed other than this implement scene
In putting.The module of above-mentioned implement scene can be merged into a module, can also be further split into multiple submodule.
The invention described above sequence number is for illustration only, does not represent the quality of implement scene.
Disclosed above is only several specific implementation scenes of the present invention, and still, the present invention is not limited to this, Ren Heben
What the technical staff in field can think change should all fall into protection scope of the present invention.
Claims (10)
1. a kind of anti-methods divulged a secret of Flash, it is characterised in that applied to Flash chip, initially deposited in the Flash chip
Contain Magic number and be provided with digital signature region, the corresponding each unique chip id of each Flash chip, this method bag
Include:
When detect establish machine by cable in Flash chip when, judge whether the Flash chip is to first power on;
If the determination result is YES, then the chip id of the Flash chip is obtained, and based on acquired chip id generation numeral label
Name;
The digital signature is stored in the digital signature region, and the Magic number in the Flash chip is wiped.
2. the method as described in claim 1, it is characterised in that " judging whether the Flash chip is to first power on ", bag
Include:
Judge in the Flash chip with the presence or absence of having Magic number and digital signature region with the presence or absence of there is digital signature;
If judged result is has Magic number, and digital signature is not present in digital signature region, it is determined that the Flash chip is
First power on;
If judged result is digital signature be present in the absence of Magic number or digital signature region, it is determined that the Flash chip is not
It is to first power on.
3. the method as described in claim 1, it is characterised in that be also stored with pre-set programs in the Flash chip;This method
Also include:
When it is not to first power on to judge the Flash chip, the chip id of the Flash chip is obtained, and based on acquired
Chip id generation digital signature;
Compare generated digital signature and whether the existing digital signature in digital signature region in the Flash chip is consistent;
If judged result is consistent, the pre-set programs that are stored in Flash chip described in Authorization execution.
4. method as claimed in claim 3, it is characterised in that also include:When the digital signature generated and the Flash cores
When the existing digital signature in digital signature region is inconsistent in piece, then the Flash chip is restarted.
5. the method as described in claim 1, it is characterised in that the digital signature region is in an initial condition sky;
After the Magic number in the Flash chip is wiped, the storage of the Magic number is stored in the Flash chip
Region is sky.
6. the anti-equipment divulged a secret of a kind of Flash, it is characterised in that applied to Flash chip, initially deposited in the Flash chip
Contain Magic number and be provided with digital signature region, the corresponding each unique chip id of each Flash chip, the equipment bag
Include:
Judge module, for when detect establish machine by cable in Flash chip when, judge whether the Flash chip is to first power on;
Generation module, for when judged result is to be, obtaining the chip id of the Flash chip, and based on acquired core
Piece ID generates digital signature;
Module is wiped, for storing the digital signature in the digital signature region, and by the magic in the Flash chip
Word is wiped.
7. equipment as claimed in claim 6, it is characterised in that the judge module " judge the Flash chip whether headed by
Secondary start ", including:
Judge in the Flash chip with the presence or absence of having Magic number and digital signature region with the presence or absence of there is digital signature;
If judged result is has Magic number, and digital signature is not present in digital signature region, it is determined that the Flash chip is
First power on;
If judged result is digital signature be present in the absence of Magic number or digital signature region, it is determined that the Flash chip is not
It is to first power on.
8. equipment as claimed in claim 6, it is characterised in that be also stored with pre-set programs in the Flash chip;The equipment
Also include:
Processing module, for when it is not to first power on to judge the Flash chip, obtaining the chip id of the Flash chip,
And digital signature is generated based on acquired chip id;
Compare generated digital signature and whether the existing digital signature in digital signature region in the Flash chip is consistent;
If judged result is consistent, the pre-set programs that are stored in Flash chip described in Authorization execution.
9. equipment as claimed in claim 8, it is characterised in that also include:
Restart module, signed for working as the existing numeral in generated digital signature and digital signature region in the Flash chip
When name is inconsistent, then the Flash chip is restarted.
A kind of 10. computer-readable storage medium, it is characterised in that computer program is stored with the computer-readable storage medium, should
For Flash chip, initial storage has Magic number and is provided with digital signature region in the Flash chip, each described
The corresponding each unique chip id of Flash chip, the computer program are used to perform below scheme:
Flow A, when detect establish machine by cable in Flash chip when, judge whether the Flash chip is to first power on;
Flow B, if the determination result is YES, then the chip id of the Flash chip is obtained, and generated based on acquired chip id
Digital signature;
Flow C, the digital signature is stored in the digital signature region, and the Magic number in the Flash chip is carried out
Erasing.
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CN109858233A (en) * | 2018-12-21 | 2019-06-07 | 惠州Tcl移动通信有限公司 | The mutual recognition methods of chip, device, storage medium and mobile terminal |
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