CN106341223A - Hardware encryption method and hardware anti-counterfeiting identification method and device - Google Patents
Hardware encryption method and hardware anti-counterfeiting identification method and device Download PDFInfo
- Publication number
- CN106341223A CN106341223A CN201610668813.7A CN201610668813A CN106341223A CN 106341223 A CN106341223 A CN 106341223A CN 201610668813 A CN201610668813 A CN 201610668813A CN 106341223 A CN106341223 A CN 106341223A
- Authority
- CN
- China
- Prior art keywords
- c8051f39x
- chip
- sequence number
- internal register
- hardware
- 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.)
- Pending
Links
Classifications
-
- 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
- H04L9/06—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols the encryption apparatus using shift registers or memories for block-wise or stream coding, e.g. DES systems or RC4; Hash functions; Pseudorandom sequence generators
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L2209/00—Additional information or applications relating to cryptographic mechanisms or cryptographic arrangements for secret or secure communication H04L9/00
- H04L2209/60—Digital content management, e.g. content distribution
- H04L2209/605—Copy protection
Landscapes
- Engineering & Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Pinball Game Machines (AREA)
- Storage Device Security (AREA)
Abstract
The invention relates to a hardware encryption method and a hardware anti-counterfeiting identification method and device. The hardware encryption method comprises the steps that the serial number in a C8051F39x/37x chip is read; and the read serial number is written in the internal register of the C8051F39x/37x chip. The hardware anti-counterfeiting identification method comprises the steps that the serial number stored in the internal register of the C8051F39x/37x chip and the serial number in the C8051F39x/37x chip are read; and whether the serial number stored in the internal register of the C8051F39x/37x chip and the serial number in the C8051F39x/37x chip are matched is judged, and the chip is identified to be a counterfeiting chip if the judgment result is no. According to the method and the device, the risk of pirating of the product can be effectively prevented by using the hardware encryption technology without increasing hardware cost so that the method and the device can be widely applied to the product using the C8051F39x/37x series MCU, and pirating of the product can be prevented.
Description
Technical field
The present invention relates to encryption technology field, particularly to a kind of hardware encryption method, hardware Antiforge recognizing method and dress
Put.
Background technology
C8051f39x/37x series of products have many advantages, are widely used in every field.For example,
C8051f39x/37x mcu built-in temperature sensor provides ± 2 DEG C in bigger temperature range (up to 105 DEG C) of accuracy, than
The temperature accuracy of other similar mcu products is high 5 times, and by improving temperature-compensating handling routine, can obtain more preferable terminal
Product reliability；C8051f39x/37x mcu is less than other schemes by more than 30%, is the ideal chose of limited space type application,
For the application of the brshless DC motor such as light delivery module, sensor interface and electric fan, dryer, dust catcher, remote-controlled toy vehicle
The solution optimizing is provided；The crossbar technology of c8051f39x/37x mcu products innovation, makes developer flexibly divide
Join peripheral functionality to designated pin position it is easy to system layout connects up, and reduce pin conflict.
C8051f39x/37x mcu is the ideal chose of light delivery module.Light delivery module is by opto-electronic device, function electricity
Road and optical interface etc. form, and effect is photoelectric signal transformation, and transmitting terminal converts electrical signals into optical signal, is transmitted by optical fiber
Afterwards, receiving terminal is converted into electric signal optical signal again.Because light delivery module technical requirements are high, market is good, therefore often occurs
The phenomenon such as counterfeit, pirate, disrupts the market, and therefore how to prevent by piracy is current problem demanding prompt solution.
Content of the invention
It is an object of the invention to provide a kind of hardware encryption method, hardware Antiforge recognizing method and device are it is adaptable to make
Equipment with c8051f39x/37x chip.
In order to realize foregoing invention purpose, embodiments provide technical scheme below:
A kind of hardware encryption method, methods described is suitable for use with the equipment of c8051f39x/37x chip, methods described bag
Include following steps:
Read the sequence number of c8051f39x/37x chip internal；
The sequence number reading is write the internal register of c8051f39x/37x chip.
Each c8051f39x/37x chip has unique sequence number, is deposited to inside by reading writing sequence number again
The operation of device, realizes hardware encryption, even if the complete duplication hardware of lawless person and firmware, also cannot reach expected function,
Adulterant still can be identified as, the product applying c8051f39x/37x chip can effectively be prevented by pirate by said method
Situation occurs.
According to embodiments of the present invention, the described inside that the sequence number reading is write c8051f39x/37x chip is deposited
Device, comprising:
To the serial number encryption reading, the inside that the sequence number after encryption is write c8051f39x/37x chip is deposited
Device.
Write again after sequence number is encrypted in the internal register of c8051f39x/37x chip, during identification, need elder generation
Correct deciphering obtains sequence number and just can do further identification judgement, realizes double-encryption, further enhances anti-counterfeit capability.
A kind of hardware Antiforge recognizing method, methods described is suitable for use with the equipment of c8051f39x/37x chip, described side
Method comprises the following steps:
Read in the sequence number and c8051f39x/37x chip of storage in the internal register of c8051f39x/37x chip
The sequence number in portion；
Judge in the sequence number of storage and c8051f39x/37x chip in the internal register of c8051f39x/37x chip
Whether the sequence number in portion mates, if mismatching, is identified as adulterant.
According to embodiments of the present invention, in said method, the sequence of storage in the internal register of c8051f39x/37x chip
Number it is the sequence number through key encryption, the sequence number of storage in the internal register of described reading c8051f39x/37x chip,
Including: extract the sequence number through encryption of storage in the internal register of c8051f39x/37x chip, using described key solution
Close deciphered after sequence number.
Further, above-mentioned Antiforge recognizing method, further comprises the steps of: when recognition result is for adulterant, controls
C8051f39x/37x chip does not work.
After being identified as adulterant, c8051f39x/37x chip is controlled not work, i.e. so that application c8051f39x/37x core
The adulterant cisco unity malfunction of piece, can effectively stop adulterant from commercially circulating, effectively further Maintenance Market order.
A kind of hardware Anti-Counterfeit Identification Device it is adaptable to using c8051f39x/37x chip equipment, the false proof knowledge of described hardware
Other device includes sequence number read module and identification module, wherein,
Described sequence number read module is used for the sequence number of storage in the internal register read c8051f39x/37x chip
Sequence number with c8051f39x/37x chip internal；
Described identification module be used for judging in the internal register of c8051f39x/37x chip the sequence number of storage with
Whether the sequence number of c8051f39x/37x chip internal mates, if mismatching, is identified as adulterant.
According to embodiments of the present invention, in said apparatus, the sequence of storage in the internal register of c8051f39x/37x chip
Number it is the sequence number through key encryption, described sequence number read module is deposited in the inside reading c8051f39x/37x chip
In device during the sequence number of storage, first extract the sequence through encryption of storage in the internal register of c8051f39x/37x chip
Number, then the sequence number after being deciphered using described secret key decryption.
Further, in said apparatus, also include function restriction module, for controlling when recognition result is for adulterant
C8051f39x/37x chip does not work.
Method and device provided in an embodiment of the present invention, using hardware-based cryptographic, can effectively prevent product pirate
Risk, and do not increase hardware cost, can be widely used for, in the product using c8051f39x/37x series mcu, preventing product quilt
Pirate.
Brief description
In order to be illustrated more clearly that the technical scheme of the embodiment of the present invention, below will be attached to use required in embodiment
Figure is briefly described it will be appreciated that the following drawings illustrate only certain embodiments of the present invention, and it is right to be therefore not construed as
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.
The flow chart of the hardware encryption method that Fig. 1 present pre-ferred embodiments provide.
The flow chart of the hardware Antiforge recognizing method that Fig. 2 present pre-ferred embodiments provide.
Fig. 3 is the high-level schematic functional block diagram of the hardware Anti-Counterfeit Identification Device that present pre-ferred embodiments provide.
Specific embodiment
Below in conjunction with accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Ground description is it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.Generally exist
The assembly of the embodiment of the present invention described and illustrated in accompanying drawing can be arranged with various different configurations and design herein.Cause
This, be not intended to limit claimed invention to the detailed description of the embodiments of the invention providing in the accompanying drawings below
Scope, but it is merely representative of the selected embodiment of the present invention.Based on embodiments of the invention, those skilled in the art are not doing
The every other embodiment being obtained on the premise of going out creative work, broadly falls into the scope of protection of the invention.
Fig. 1 is the flow chart of the hardware encryption method that present pre-ferred embodiments provide.Refer to Fig. 1, the present invention is preferable
The hardware encryption method that embodiment provides comprises the following steps:
Step s101, reads the sequence number of c8051f39x/37x chip internal.
Step s102, the sequence number reading is write the internal register of c8051f39x/37x chip.
The device id (equipment id), the revision of 1 byte of 1 byte is comprised inside c8051f39x/37x series mcu
Id (version id), the serial number (sequence number) of 4 bytes, wherein serial number is for each c8051f39x/
37x series mcu chip is unique, and this Serial No. is read-only.
The present embodiment methods described is applicable to apply all products of c8051f39x/37x series mcu, the present embodiment
In, taking apply the light delivery module of c8051f39x/37x series mcu as a example illustrate.During firmware design, need iic from
The register of open at least 4 bytes in the self-defined area of manufacturer of machine, for storing serial number.Produce in light delivery module
When, the serial number of c8051f39x/37x series mcu chip internal is read, and writes c8051f39x/37x series
The internal register of mcu chip.
It is encrypted by hardware encryption method described in the present embodiment, if light delivery module is plagiarized or pirate, by
In the encryption of the adulterant shortage above-mentioned steps of plagiarism or piracy, therefore adulterant will be unable to by identification in anti-counterfeit recognition,
Can effectively prevent light delivery module from being plagiarized.
In order to further enhance the anti-counterfeit capability of product, above-mentioned steps s102 can be in the following ways:
To the serial number encryption reading, the inside that the sequence number after encryption is write c8051f39x/37x chip is deposited
Device.Can be with using any one of prior art software cryptography mode, the present embodiment to the mode of the serial number encryption reading
In do not limit.
Write again after sequence number is encrypted in the internal register of c8051f39x/37x chip, during identification, need elder generation
Correct deciphering obtains sequence number and just can do further identification judgement, realizes double-encryption, further enhances anti-counterfeit capability.
Correspondingly, additionally provide a kind of false proof knowledge of the product being applied to and processing through above-mentioned encryption method in the present embodiment
Other method.Refer to Fig. 2, the hardware Antiforge recognizing method providing in the present embodiment, comprise the following steps:
Step s201, reads the sequence number of storage and c8051f39x/ in the internal register of c8051f39x/37x chip
The sequence number of 37x chip internal.
Step s202, judges the sequence number of storage and c8051f39x/ in the internal register of c8051f39x/37x chip
Whether the sequence number of 37x chip internal mates, if mismatching, is identified as adulterant.
As one kind preferably embodiment, in this step, after identifying adulterant, limit c8051f39x/37x chip
Work, that is, control c8051f39x/37x chip not work.It is directed to adulterant, c8051f39x/37x chip does not work so that answering
With the adulterant cisco unity malfunction of c8051f39x/37x chip, and then can effectively stop adulterant from commercially circulating, enter one
Step Maintenance Market order effectively.
If certified products, because encryption method aforementioned in the present embodiment is encrypted, therefore c8051f39x/37x core
Be stored with the internal register of piece sequence number, and the sequence number phase of this sequence number and c8051f39x/37x mcu chip internal
Coupling, then can be verified by identification during anti-counterfeit recognition, be identified as certified products.If adulterant, though intactly replicate hardware and
Firmware, due to adulterant, aforementioned encryption method in the present embodiment is not encrypted, therefore c8051f39x/37x chip
Internal register in not there are sequence number, unmatched phenomenon occurs during anti-counterfeit recognition, can not be tested by identification
Card, and then it is identified as adulterant.By Antiforge recognizing method described in the present embodiment, certified products, adulterant can be efficiently identified, prevent
Product is replicated, piracy.
Easy to understand, if the Serial No. of storage is through key in the internal register of c8051f39x/37x chip
The sequence number of encryption, then in described step s201, reads the sequence of storage in the internal register of c8051f39x/37x chip
Number, concrete operations are: extract the sequence number through encryption of storage in the internal register of c8051f39x/37x chip, adopt
Described secret key decryption deciphered after sequence number.
Fig. 3 is the high-level schematic functional block diagram of the hardware Anti-Counterfeit Identification Device that present pre-ferred embodiments provide.Refer to figure
3, the hardware Anti-Counterfeit Identification Device that the present embodiment provides, including sequence number read module 301 and identification module 302.
Described sequence number read module 301, for reading the sequence storing in the internal register of c8051f39x/37x chip
Row number and the sequence number of c8051f39x/37x chip internal.If storage in the internal register of c8051f39x/37x chip
The sequence number that Serial No. is encrypted through key, described sequence number read module 301 is in reading c8051f39x/37x chip
In portion's register during the sequence number of storage, first extract passing through of storage in the internal register of c8051f39x/37x chip and encrypt
Sequence number, then the sequence number after being deciphered using described secret key decryption.
Described identification module 302, for judge in the internal register of c8051f39x/37x chip the sequence number of storage with
Whether the sequence number of c8051f39x/37x chip internal mates, if mismatching, is identified as adulterant.
It may be preferred that the described Anti-Counterfeit Identification Device based on c8051f39x/37x chip also includes function restriction module
303, for when the recognition result that described identification module provides is adulterant, controlling c8051f39x/37x chip not work.
For not describing part in described hardware Anti-Counterfeit Identification Device embodiment, see aforesaid hardware encryption method real
Apply in example and hardware Antiforge recognizing method embodiment and accordingly describe.
The above, the only specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, and any
Those familiar with the art the invention discloses technical scope in, change or replacement can be readily occurred in, all should contain
Cover within protection scope of the present invention.
Claims (8)
1. a kind of hardware encryption method is it is characterised in that methods described is suitable for use with the equipment of c8051f39x/37x chip,
The method comprising the steps of:
Read the sequence number of c8051f39x/37x chip internal；
The sequence number reading is write the internal register of c8051f39x/37x chip.
2. method according to claim 1 is it is characterised in that described write c8051f39x/ by the sequence number reading
The internal register of 37x chip, comprising:
To the serial number encryption reading, the sequence number after encryption is write the internal register of c8051f39x/37x chip.
3. a kind of hardware Antiforge recognizing method is it is characterised in that methods described is suitable for use with setting of c8051f39x/37x chip
Standby, the method comprising the steps of:
Read the sequence number of storage and c8051f39x/37x chip internal in the internal register of c8051f39x/37x chip
Sequence number；
Judge the sequence number of storage and c8051f39x/37x chip internal in the internal register of c8051f39x/37x chip
Whether sequence number mates, if mismatching, is identified as adulterant.
4. method according to claim 3 is it is characterised in that store in the internal register of c8051f39x/37x chip
The sequence number encrypted through key of Serial No., storage in the internal register of described reading c8051f39x/37x chip
Sequence number, comprising: extract the sequence number through encryption of storage in the internal register of c8051f39x/37x chip, using institute
State the sequence number after secret key decryption is deciphered.
5. method according to claim 3, it is characterised in that further comprising the steps of: when recognition result is for adulterant, controls
C8051f39x/37x chip does not work.
6. a kind of hardware Anti-Counterfeit Identification Device is it is characterised in that being suitable for use with the equipment of c8051f39x/37x chip, described
Hardware Anti-Counterfeit Identification Device includes sequence number read module and identification module, wherein,
Described sequence number read module be used for reading in the internal register of c8051f39x/37x chip the sequence number of storage and
The sequence number of c8051f39x/37x chip internal；
Described identification module be used for judging in the internal register of c8051f39x/37x chip the sequence number of storage with
Whether the sequence number of c8051f39x/37x chip internal mates, if mismatching, is identified as adulterant.
7. device according to claim 6 is it is characterised in that store in the internal register of c8051f39x/37x chip
The sequence number encrypted through key of Serial No., described sequence number read module is reading in c8051f39x/37x chip
In portion's register during the sequence number of storage, first extract passing through of storage in the internal register of c8051f39x/37x chip and encrypt
Sequence number, then the sequence number after being deciphered using described secret key decryption.
8. device according to claim 6 is it is characterised in that also include function restriction module, for when recognition result being
C8051f39x/37x chip is controlled not work during adulterant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610668813.7A CN106341223A (en) | 2016-08-15 | 2016-08-15 | Hardware encryption method and hardware anti-counterfeiting identification method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610668813.7A CN106341223A (en) | 2016-08-15 | 2016-08-15 | Hardware encryption method and hardware anti-counterfeiting identification method and device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106341223A true CN106341223A (en) | 2017-01-18 |
Family
ID=57825549
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610668813.7A Pending CN106341223A (en) | 2016-08-15 | 2016-08-15 | Hardware encryption method and hardware anti-counterfeiting identification method and device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106341223A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108171523A (en) * | 2017-12-28 | 2018-06-15 | 杭州和利时自动化有限公司 | A kind of track of hardware method |
| CN108973720A (en) * | 2018-07-12 | 2018-12-11 | 北京车和家信息技术有限公司 | The method and device of battery management |
| CN112507397A (en) * | 2020-11-23 | 2021-03-16 | 中国人民解放军战略支援部队信息工程大学 | Microprocessor firmware information protection method based on information encryption |
| CN114326986A (en) * | 2021-08-19 | 2022-04-12 | 深圳市中微信息技术有限公司 | Autonomous and controllable management system of domestic platform |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101500010A (en) * | 2009-02-10 | 2009-08-05 | 中国联合网络通信集团公司有限公司 | Access-to-network authentication method for video terminal, authentication server and video terminal |
| CN102306312A (en) * | 2011-08-22 | 2012-01-04 | 施贤松 | Novel anti-counterfeiting system and method for carrying out identification on anti-counterfeit label |
| CN102523088A (en) * | 2011-12-27 | 2012-06-27 | 成都芯通科技股份有限公司 | Methods for encrypting and protecting system by combining software and field-programmable gate array (FPGA) |
| CN103136454A (en) * | 2011-11-25 | 2013-06-05 | 北京泛华恒兴科技有限公司 | Encryption device and encryption method |
| CN203773549U (en) * | 2013-10-25 | 2014-08-13 | 上海华力创通半导体有限公司 | Chip identifier-based software security application device |
| CN104553384A (en) * | 2014-12-25 | 2015-04-29 | 珠海艾派克微电子有限公司 | Consumable chip as well as identification method and device for serial number of consumable chip |
| CN105808978A (en) * | 2016-03-02 | 2016-07-27 | 上海斐讯数据通信技术有限公司 | Single chip firmware-based hardware pirate preventing method and system |
-
2016
- 2016-08-15 CN CN201610668813.7A patent/CN106341223A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101500010A (en) * | 2009-02-10 | 2009-08-05 | 中国联合网络通信集团公司有限公司 | Access-to-network authentication method for video terminal, authentication server and video terminal |
| CN102306312A (en) * | 2011-08-22 | 2012-01-04 | 施贤松 | Novel anti-counterfeiting system and method for carrying out identification on anti-counterfeit label |
| CN103136454A (en) * | 2011-11-25 | 2013-06-05 | 北京泛华恒兴科技有限公司 | Encryption device and encryption method |
| CN102523088A (en) * | 2011-12-27 | 2012-06-27 | 成都芯通科技股份有限公司 | Methods for encrypting and protecting system by combining software and field-programmable gate array (FPGA) |
| CN203773549U (en) * | 2013-10-25 | 2014-08-13 | 上海华力创通半导体有限公司 | Chip identifier-based software security application device |
| CN104553384A (en) * | 2014-12-25 | 2015-04-29 | 珠海艾派克微电子有限公司 | Consumable chip as well as identification method and device for serial number of consumable chip |
| CN105808978A (en) * | 2016-03-02 | 2016-07-27 | 上海斐讯数据通信技术有限公司 | Single chip firmware-based hardware pirate preventing method and system |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108171523A (en) * | 2017-12-28 | 2018-06-15 | 杭州和利时自动化有限公司 | A kind of track of hardware method |
| CN108171523B (en) * | 2017-12-28 | 2021-03-23 | 杭州和利时自动化有限公司 | Hardware tracking method |
| CN108973720A (en) * | 2018-07-12 | 2018-12-11 | 北京车和家信息技术有限公司 | The method and device of battery management |
| CN112507397A (en) * | 2020-11-23 | 2021-03-16 | 中国人民解放军战略支援部队信息工程大学 | Microprocessor firmware information protection method based on information encryption |
| CN112507397B (en) * | 2020-11-23 | 2023-03-14 | 中国人民解放军战略支援部队信息工程大学 | Microprocessor firmware information protection method based on information encryption |
| CN114326986A (en) * | 2021-08-19 | 2022-04-12 | 深圳市中微信息技术有限公司 | Autonomous and controllable management system of domestic platform |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10855470B2 (en) | USB security gateway | |
| CN101542452B (en) | The authentication method of External memory equipment, equipment and system | |
| CN106341223A (en) | Hardware encryption method and hardware anti-counterfeiting identification method and device | |
| US10515234B2 (en) | Method and apparatus for securing KVM matrix | |
| CN108701191B (en) | Data processing device and method for verifying the integrity of a data processing device | |
| CN106055502A (en) | Universal serial bus (usb) filter hub | |
| CN105046142B (en) | A kind of method, equipment and the storage medium of certification ancillary equipment | |
| CN101968834A (en) | Encryption method and device for anti-copy plate of electronic product | |
| CN103020495B (en) | Embedded-type software anti-piracy encryption method | |
| CN107832589A (en) | Software copyright protecting method and its system | |
| CN106682522A (en) | Fingerprint encryption device and implementation method thereof | |
| US8769654B2 (en) | Counterfeit prevention strategy for pluggable modules | |
| CN104361280B (en) | A kind of method realizing carrying out authentic authentication to USB storage device by SMI interrupt | |
| CN102831081A (en) | Transparent encryption and decryption secure digital memory card (SD card) and implementation method thereof | |
| CN103870765A (en) | USB (Universal Serial Bus) security lock and method for protecting data by using USB security lock | |
| CN104715207B (en) | Pass through the method for cipher key storage file under a kind of Android platform | |
| CN108614967A (en) | Battery authentication method, device battery, unmanned plane and storage medium | |
| CN106951790A (en) | USB storage medium transparent encryption methods | |
| CN106778207A (en) | Clone recognition methods and the device of card | |
| CN106855923A (en) | A kind of electronic installation based on biological identification technology | |
| CN102223227B (en) | Safe and intelligent code memory chip and automatic communication file reestablishing method thereof | |
| CN205068458U (en) | Card reader of smart card | |
| CN102737193A (en) | Equipment shielding method and device for data security prevention and control | |
| CN106952659B (en) | CD multistage imprinting encryption method based on XTS encryption mode | |
| CN201892951U (en) | Secret key device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170118 |
|
| RJ01 | Rejection of invention patent application after publication |