CN107844317A - A kind of multi-functional SPI flash method for burn-recording and cd-rom recorder - Google Patents
A kind of multi-functional SPI flash method for burn-recording and cd-rom recorder Download PDFInfo
- Publication number
- CN107844317A CN107844317A CN201711168900.7A CN201711168900A CN107844317A CN 107844317 A CN107844317 A CN 107844317A CN 201711168900 A CN201711168900 A CN 201711168900A CN 107844317 A CN107844317 A CN 107844317A
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- Prior art keywords
- key
- ciphertext
- module
- decryption
- rom recorder
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/04—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks
- H04L63/0428—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the data content is protected, e.g. by encrypting or encapsulating the payload
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/08—Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords
- H04L9/0861—Generation of secret information including derivation or calculation of cryptographic keys or passwords
Abstract
The invention discloses a kind of multi-functional SPI flash method for burn-recording, and the file for treating burning is formed into ciphertext by key encryption, secret key is encrypted to form secret key ciphertext；The decryption key of ciphertext and secret key ciphertext is decrypted in cd-rom recorder memory storage, and protection is encrypted in the key of decryption key ciphertext；The ciphertext and secret key ciphertext are reduced into after recordable paper in cd-rom recorder by decryption key carries out burning operation by SPI communication modules；The agreement script of host computer editor is handled by cd-rom recorder operation, wherein, instruction transparent transmission after the completion of SPI communication modules by feeding back to host computer.The invention also discloses a kind of multi-functional SPI flash cd-rom recorders.Secrecy and the purpose of quick programming are realized during the cd-rom recorder adjustable and programming.
Description
Technical field
The present invention relates to burning field, in particular to a kind of multi-functional SPI flash method for burn-recording and cd-rom recorder.
Technical background
SPI flash cd-rom recorders are controlled by the network interface or usb mouths of host computer on the market at present, are carried out complete
Erasing, subregion wipe, write entirely, subregion is write, full-time course, subregion reading and be automatically brought into operation, such as wipe, write, read, compare.
SPI flash are operated in actual use, are completed by spi bus protocol instructions one by one.Above-mentioned cd-rom recorder comes to user can not
Transparent transmission is instructed, and function is closed very much, and user can not track, and is examined, debugging.
The content of the invention
The present invention is aiming at the deficiencies in the prior art, there is provided secrecy and fast is realized during a kind of adjustable and programming
Multi-functional the SPI flash method for burn-recording and cd-rom recorder of fast programming.
To achieve these goals, the multi-functional SPI flash method for burn-recording designed by the present invention, its special character exist
In：
The file for treating burning is formed into ciphertext by key encryption, secret key is encrypted to form secret key ciphertext；
The decryption key of ciphertext and secret key ciphertext is decrypted in cd-rom recorder memory storage, and the key of decryption key ciphertext is carried out
Encipherment protection；
The ciphertext and secret key ciphertext are reduced into after recordable paper by SPI communication modules in cd-rom recorder by decryption key
Carry out burning operation；
The agreement script of host computer editor is handled by cd-rom recorder operation, wherein, instruction transparent transmission is complete by SPI communication modules
Host computer is fed back to after.
Further, recordable paper is encrypted to form ciphertext using symmetric key, and symmetric key uses asymmetric key encryption
Form secret key ciphertext.
Further, the key of decryption key ciphertext realizes encipherment protection using hardware circuit.
Further, the method for burn-recording has online and off line both of which.
On the other hand, the present invention have also been devised a kind of multi-functional SPI flash cd-rom recorders, and it is characterized in that：At least
Including Network Interface Module, memory modules, memory module, encryption/decryption module and the SPI communication mould being connected with central processing module
Block；
The Network Interface Module is used to download the ciphertext and secret key ciphertext for treating burning, or agreement script is passed
It is defeated；
The encryption/decryption module is used to secret key be encrypted protection；
The SPI communication module has the bottom mtd device drives and spidev device drives supported under linux.
Further, the encryption/decryption module is realized by the internal hardware circuit with toggle switch.
Further, the cd-rom recorder also includes LCD MODULE and key-press module, the LCD MODULE and button
Module is connected with central processing module.
Further, the cd-rom recorder also includes TF memory modules, and the TF memory modules or memory modules are used equally for
Burning operation under offline mode.
The advantage of the invention is that：Both of which, the compatible above-mentioned general operation method of production model are provided.Debugging mode is adopted
Issued with spi bus communication, user presses script mode editor.Any independent assortment agreement, debugging tracking.Present apparatus band liquid crystal
Show module and key-press module, memory module and TF storages, offline off line burning can be realized, offline off line does not need host computer to be situated between
Enter.When user needs to encrypt, during quick programming, file can be encrypted in host computer.Copy cd-rom recorder to, cd-rom recorder can be installed
Secret key decryption simultaneously issues burning.This process, which reduces, intercepts network interface or the time of usb oral instructions transmission of data and communication data, reaches guarantor
The purpose of close and quick programming.Because departing from host computer, recordable paper all copies cd-rom recorder to, reduces from host computer during burning
Send data to the time of cd-rom recorder.
Brief description of the drawings
Fig. 1 is a kind of structural representation of multi-functional SPI flash cd-rom recorder on line states of the present invention.
Fig. 2 is a kind of structural representation of multi-functional SPI flash cd-rom recorder off-line states of the present invention.
Fig. 3 is the encryption/decryption module structural representation of the present invention.
Embodiment
The present invention is described in further detail with specific embodiment below in conjunction with the accompanying drawings：
Multi-functional SPI flash method for burn-recording designed by the present invention, the file for treating burning is formed by key encryption
Ciphertext, secret key is encrypted to form secret key ciphertext；
The decryption key of ciphertext and secret key ciphertext is decrypted in cd-rom recorder memory storage, and the key of decryption key ciphertext is carried out
Encipherment protection；
The ciphertext and secret key ciphertext are reduced into after recordable paper by SPI communication modules in cd-rom recorder by decryption key
Carry out burning operation；
The agreement script of host computer editor is handled by cd-rom recorder operation, wherein, instruction transparent transmission is complete by SPI communication modules
Host computer is fed back to after.
In order to preferably realize secrecy, recordable paper is encrypted to form ciphertext using symmetric key, and symmetric key is using non-right
Key encryption is claimed to form secret key ciphertext.The key of decryption key ciphertext realizes encipherment protection using hardware circuit.
The method for burn-recording of the present invention has online and off line both of which.
Include present invention also offers a kind of multi-functional SPI flash cd-rom recorders, during the cd-rom recorder online mode host computer,
Network interface interface module, central processing module, EMMC memory modules, TF memory modules, internal memory, liquid crystal display, SPI communication module and
Button.
During offline mode include network interface interface module, central processing module, EMMC memory modules, TF memory modules, internal memory,
Liquid crystal display, SPI communication module and button.
Wherein, online mode includes online selection production model and online selection debugging mode：
During online selection production model, the instruction of the host computer sends central processing module by network interface interface module,
The cd-rom recorder program operated on internal memory, which receives, to be instructed and handles, and the program of cd-rom recorder is placed on emmc memory modules, and system starts
Put by central processing module and run on internal memory afterwards, read-write data file is sent to EMMC memory modules by network interface interface module.
Wipe, write, reading to complete by cd-rom recorder SPI communication module bottom mtd device drives.No data exchanges in operating process.
During online selection debugging mode, the host computer editor agreement script, script is sent out one by one by network interface interface module
Central processing module is sent, the cd-rom recorder program operated on internal memory receives one by one to be instructed and handle, and instruction transparent transmission passes through cd-rom recorder
The driving of SPI communication module bottom spi bus is completed.Mosi buses send data, and Miso, which is summarized, receives data, and Mosi pins are sent
Data Miso pins receive data, and pass back to host computer by network interface interface module.Can be with single step trace command state.
During online selection debugging mode, SPI flash protocol instructions functions need to support under SPI communication module 8 and linux
Bottom spidev driving complete.
SPI communication module refers to SPI bus controller, refers to SPI hardware corridors.
The bottom spidev device drives supported under linux, refer to drive exclusively for a kind of character of spi bus communication.
Received and dispatched by standard spi bus protocol data.
During offline mode, the file that host computer is prepared to programming is encrypted by host computer procedure, and encryption file passes through
Network interface interface module 1 is sent to EMMC memory modules 3 or copies TF memory modules 4 to by central processing unit 2.Operate in internal memory
Cd-rom recorder program on 5 is selected by liquid crystal display 6 and button 8 and sets burning operation, such as the selection to recordable paper and is taken
The operation such as disappear.Secret key decryption can be used during burning operation.It is complete by the bottom mtd device drives of cd-rom recorder SPI communication module 7
Into.The burning operation of cd-rom recorder program includes：1st, with asymmetric private key ciphertext data；2nd, it is exactly symmetric key after decrypting；
3rd, with symmetric key decryption recordable paper；4th, SPI flash are wiped；5th, recordable paper write-in SPI flash；6th, read and compare effect
Test.
Cd-rom recorder encryption and decryption we use：Recordable paper data are encrypted using DES symmetric cryptographic key method, symmetric cryptography
The protection of secret key is encrypted using RSA unsymmetrical key method, and asymmetric secret key uses the key of 1024 bits.Calculated with symmetric cryptography
Method is different, and rivest, shamir, adelman needs two keys：Public-key cryptography publickey and private cipher key privatekey.It is open
Key is external disclosure, and private key is that we are internal proprietary.Encrypted because our recordable paper can pass through host computer, if entirely
Portion uses symmetric key method.User obtains key and is easy to crack file, but asymmetric-key encryption has size of data limitation,
So we encrypt just for symmetric cryptographic key.Recordable paper uses symmetric key encryption.On our host computer and
There are a pair of symmetric cryptographic key on cd-rom recorder, the protected not external disclosure of this pair of secret keys, the recordable paper on host computer is that is, bright
Text, ciphertext is formed with symmetric key encryption in plain text, symmetric key is encrypted to form symmetric key ciphertext with asymmetric public key, by ciphertext
Downloaded to symmetric key ciphertext by network interface interface module or TF memory modules in cd-rom recorder.
We form symmetric cryptographic key using private key decrypted symmetric key ciphertext in cd-rom recorder, close with symmetric cryptography
Key decrypts ciphertext, ultimately forms in plain text, that is, is reduced to recordable paper.
Private key fixed line is in cd-rom recorder EMMC memory modules, if in order to which advanced strick precaution private key is stolen user out of cd-rom recorder
Acquirement can also crack file, encrypt private key with encryption/decryption module in cd-rom recorder, and EMMC memory modules are arrived in generation key storage,
And it is reduced into private key by encryption/decryption module decryption during burning and is decrypted.Encryption/decryption module uses hardware circuit, steals
User can not obtain, and ensure the security of private key.
DES symmetric-key encryption methods：Using 64bit length keys.
RSA asymmetric-key encryption methods：RSA ciphering process can be expressed using a formula：
Ciphertext=plaintext EmodN
It was found from formula, only it is to be understood that E and N anyone can be carried out rsa encryption, thus E, N are rsa encryptions
Key, that is to say, that E and N combination is exactly public key, and we represent public key with (E, N)：
Public key=(E, N)
Wherein, E is encryption Encryption；N is digital Number.
RSA decryption can equally be expressed using a formula：
In plain text=ciphertext DmodN
It was found from formula, only it is to be understood that D and N is with regard to that can be decrypted ciphertext, so D and N combination is exactly private key, we
Private key is represented with (D, N)：
Private key=(D, N)
Wherein, D is decryption Decryption, and N is digital Number.
| Public key | (E, N) |
| Private key | (D, N) |
| Key pair | (E, D, N) |
| Encryption | Ciphertext=plaintext EmodN |
| Decryption | In plain text=ciphertext DmodN |
1. seek N
2. seek L (L is the mediant of pilot process)
3. seek E
4. seek D
Seek N：
Prepare two prime numbers p, q, the two numbers can not be too small, too small, can easily crack, and it is exactly N that p is multiplied by into q
N=p × q
Seek L
L is p-1 and q-1 least common multiple, can be represented with following expression：
L=lcm (p-1, q-1)
Seek E
E must is fulfilled for two conditions：E is a ratio 1 number smaller than L greatly, and E and L greatest common divisor are 1, with gcd (X,
Y) X is represented, then E conditions are as follows for Y greatest common divisor：1<E<L
Gcd (E, L)=1
The number D needed to use when why to need E and L greatest common divisor for 1 be to ensure to certainly exist decryption.It is existing
We obtained E and N that is we generated the public key of cipher key pair.
Seek D
Number D is calculated by several E.D, following relation must is fulfilled between E and L：1<D<L, E × D mod L=1,
As long as D meets above-mentioned 2 conditions, then the ciphertext being encrypted by E and N is decrypted with D and N.
Briefly condition 2 is to ensure that the data after ciphertext decryption are exactly in plain text.
Present private key has naturally also generated, and key to also with regard to generating naturally.
Citing：
Seek N：
We prepare two very littles to prime number, p=17, q=19,
N=p × q=323
Seek L：
L=lcm (p-1, q-1)=lcm (16,18)=144,
144 be 16 and 18 pairs of least common multiples
Seek E：
E is asked to have to meet 2 conditions：1<E<L, gcd (E, L)=1,
I.e. 1<E<144, gcd (E, 144)=1
The prime numbers each other of E and 144,5 obviously meet above-mentioned 2 conditions, therefore E=5,
Now public key=(E, N)=(5,323).
Seek D：
D is asked also must to be fulfilled for 2 conditions：1<D<L, E × D mod L=1,
I.e. 1<D<144,5 × D mod 144=1,
Obviously above-mentioned two condition is met as D=29,1<29<144,
5 × 29mod 144=145mod 144=1
Now private key=(D, N)=(29,323)
Encryption：
The plaintext of preparation must when number less than N because encryption or decryption will mod N its result be necessarily less than N,
Assuming that in plain text=123
Then ciphertext=plaintext EmodN=1235mod323=225
Decryption：
In plain text=ciphertext DmodN=22529mod323=123,
Plaintext after decryption is 123.The encryption process of the present invention does not need user's concern, by being completed inside cd-rom recorder,
User is only needed when carrying out burning operation, chooses whether need the option encrypted i.e. in host computer either off line burning
Can.
It is all prior art that DES symmetric key encryptions and RSA asymmetric-key encryptions, which use,.
Private key is encrypted with encryption/decryption module in cd-rom recorder, encryption/decryption module is opened using hardware circuit by internal dial-up
Close to gate pull-up, drop-down, so as to produce this gpio positions low and high level.Software obtains level state by reading gpio values.
So as to obtain 8 bit values.
Data moves to left 8 and added up, obtain 1024 bit values by circulation 127 times.This 1024 bit value and private key 1024
Bit value carries out bit arithmetic.
Encryption/decryption module is encrypted in cd-rom recorder, private key judges every respectively, if 0 and 1024 bit values pair of generation
Position is answered to be added, if 1 is not handled.Most private key encryption produces final key preservation at last.And cross 1024 digit Value Operations
Record preservation in position.Encryption/decryption module is decrypted in cd-rom recorder, the position that final ciphertext is crossed according to 1024 digit Value Operations is remembered
Record every and correspond to position with 1024 bit values and subtract each other.Finally it is reduced into private key.
Heretofore described central processing module 3 is ARM nucleus modules.ARM nucleus modules use atmel 9g45 chips,
Mainly as operating system and application program operation platform.
Host computer 1 is ordinary PC.Network interface interface module 2 is 100M phy.EMMC memory modules 4 are Toshiba 8G byte
Chip.TF memory modules 5 are sudden strain of a muscle enlightening 8G byte chips.Internal memory 6 is Micron magnesium light 128M DDR2.4.3 cun of liquid crystal display 7
QHD 24bit RGB screens.SPI communication module 8 is SPI bus controller.Button 9 is common input gpio.
It above are only the design explanation for example of the present invention.The invention is not limited in this, it is all to the present invention carry out it is non-
Substantial change, the behavior for invading the scope of the present invention all should be belonged to.
Claims (8)
- A kind of 1. multi-functional SPI flash method for burn-recording, it is characterised in that：The file for treating burning is formed into ciphertext by key encryption, secret key is encrypted to form secret key ciphertext；The decryption key of ciphertext and secret key ciphertext is decrypted in cd-rom recorder memory storage, and the key of decryption key ciphertext is encrypted Protection；The ciphertext and secret key ciphertext are reduced into after recordable paper in cd-rom recorder by decryption key to be carried out by SPI communication modules Burning operation；The agreement script of host computer editor is handled by cd-rom recorder operation, wherein, after the completion of instruction transparent transmission is by SPI communication modules Feed back to host computer.
- 2. SPI flash method for burn-recording according to claim 1, it is characterised in that：Recordable paper is added using symmetric key Close formation ciphertext, symmetric key form secret key ciphertext using asymmetric key encryption.
- 3. SPI flash method for burn-recording according to claim 1, it is characterised in that：The key of decryption key ciphertext uses Hardware circuit realizes encipherment protection.
- 4. SPI flash method for burn-recording according to claim 1, it is characterised in that：The method for burn-recording has online and de- Machine both of which.
- A kind of 5. multi-functional SPI flash cd-rom recorders, it is characterised in that：Connect including at least the network being connected with central processing module Mouth mold block, memory modules, memory module, encryption/decryption module and SPI communication module；The Network Interface Module is used to download the ciphertext and secret key ciphertext for treating burning, or agreement script is transmitted；The encryption/decryption module is used to secret key be encrypted protection；The SPI communication module has the bottom mtd device drives and spidev device drives supported under linux.
- A kind of 6. multi-functional SPI flash cd-rom recorders according to claim 5, it is characterised in that：The encryption/decryption module Realized by the internal hardware circuit with toggle switch.
- A kind of 7. multi-functional SPI flash cd-rom recorders according to claim 5, it is characterised in that：The cd-rom recorder also includes LCD MODULE and key-press module, the LCD MODULE and key-press module are connected with central processing module.
- A kind of 8. multi-functional SPI flash cd-rom recorders according to claim 5, it is characterised in that：The cd-rom recorder also includes TF memory modules.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711168900.7A CN107844317B (en) | 2017-11-21 | 2017-11-21 | Multifunctional SPI flash burning method and burner |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711168900.7A CN107844317B (en) | 2017-11-21 | 2017-11-21 | Multifunctional SPI flash burning method and burner |
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| Publication Number | Publication Date |
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| CN107844317A true CN107844317A (en) | 2018-03-27 |
| CN107844317B CN107844317B (en) | 2021-05-04 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109274488A (en) * | 2018-09-04 | 2019-01-25 | 广州众诺电子技术有限公司 | Integrated circuit burning program method, storage medium and system |
| CN111158710A (en) * | 2019-12-30 | 2020-05-15 | 杭州迪普科技股份有限公司 | Program programming method and device and network equipment |
| CN113254034A (en) * | 2021-06-07 | 2021-08-13 | 深圳市蔚来芯科技有限公司 | Vehicle-mounted terminal system upgrading burning encryption method and encryption process thereof |
| CN113778470A (en) * | 2021-09-10 | 2021-12-10 | 湖南进芯电子科技有限公司 | Portable DSP (digital signal processor) burner based on JTAG (joint test action group) and burning method |
| CN113806774A (en) * | 2021-09-15 | 2021-12-17 | 惠州市德赛电池有限公司 | Encryption method, decryption method and system |
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| CN113778470A (en) * | 2021-09-10 | 2021-12-10 | 湖南进芯电子科技有限公司 | Portable DSP (digital signal processor) burner based on JTAG (joint test action group) and burning method |
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| CN113806774B (en) * | 2021-09-15 | 2024-02-13 | 惠州市德赛电池有限公司 | Encryption method, decryption method and system |
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|---|---|
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