CN202102464U - Virtual communication file automatically constructed security smart cipher chip - Google Patents
Virtual communication file automatically constructed security smart cipher chip Download PDFInfo
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- CN202102464U CN202102464U CN2011201907037U CN201120190703U CN202102464U CN 202102464 U CN202102464 U CN 202102464U CN 2011201907037 U CN2011201907037 U CN 2011201907037U CN 201120190703 U CN201120190703 U CN 201120190703U CN 202102464 U CN202102464 U CN 202102464U
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Abstract
The utility model relates to a virtual communication file automatically constructed security smart cipher chip which comprises an SD (Secure Digital) interface, a security engine, a security algorithm module and a secure storage area in the smart card, wherein the SD interface is used for receiving data which is transmitted to the security smart cipher chip by main equipment and needs to be security processed; the security engine is used for calling corresponding security algorithms in the card to process the data transmitted by the main equipment and sending the processed data back to corresponding programs in the main equipment through the SD interface; the security algorithm module is solidified in the chip, has the functions of encryption algorithm, decryption algorithm and digest algorithm and is used for being called, by the security engine, to process the data transmitted by the main equipment; and the security storage area in the smart card is used for storing data required by the work of the smart card and related information which is preset in the card and needs to be returned to communication files of the main equipment. The virtual communication file automatically constructed security smart cipher chip has the advantages of saving cost and preferably and powerfully ensuring that the security smart cipher chip has the function of providing security cipher service.
Description
Technical field
The present invention relates to a kind ofly can practice thrift virtual communication file that cost simultaneously better provides the security password service function with the powerful guarantee safe and intelligent password card safe and intelligent crypto chip of structure automatically.
Background technology
Along with the progress and the development of science and technology of society, human society steps into the information age.Infotech and industry obtain high speed development on the one hand, demonstrate flourishing as never before scene.On the other hand, the incident of harm information security but constantly takes place, and the situation that information security faced is severe.Under this background, people develop various intelligent memory cards, attempt to protect to a certain extent information security.
At present, the smart memory card system towards (support) SD agreement of main flow generally adopts three chip architectures.As shown in Figure 1, this three chip architecture comprises SD card controller chip, smart card controller chip and three major parts of flash memory (FLASH) chip.Intelligent memory card is supported symmetry, asymmetric cryptographic algorithm and digest algorithm, can store user certificate, is used for user identity identification, the safety storing of safety control strategy and corresponding security algorithm and user's important information and Transaction Information is provided.
Communicating by letter between main equipment (like PC or mobile terminal device etc.) and intelligent memory card (below be called card) carried out through the SD agreement.Intelligent memory card both can provide the storage of ordinary file, the security password service function that also can provide the front to introduce.For the latter specifically, the upper layer application in main equipment, it sends order and receives return data card and all adopts file read-write mode to realize.After format and creating the intelligent memory card chip system, have in the card and comprise several hidden files folders.Can comprise several class files (being the communication file of indication in the title) in these hidden files folder: (1) is used for the file of memory card return message; (2) system file of the required use of card itself; (3) to the file of card write command.All these hidden files folders and file wherein all are stored in the FLASH chip of smart memory card system.These communication files are to issue at card to be created among the FLASH by special hair fastener instrument before the user uses.
Mention intelligent memory card above the storage of ordinary file both can be provided, the security password service function that also can provide the front to introduce.According to different application requirements; The user who has only need use the security password service function of intelligent memory card; And do not need its storage that ordinary file is provided, and promptly only this intelligent memory card is used as a security password card to use, need not use the Flash in the card; From the consideration of practicing thrift the card cost, the Flash chip in needing when making card in card manufacturer to block removes.For this situation, because the Flash chip does not exist, the entity of corresponding communication file just can be deposited nowhere so.And do not have communication file, card to have no idea to provide the security password service.How normally to use the security password function of card in this case is urgent problem.
Summary of the invention
The objective of the invention is to overcome the deficiency that exists in the prior art and a kind of safe and intelligent crypto chip that under the support of safe and intelligent crypto chip, makes up automatically based on the virtual communication file of safe and intelligent crypto chip is provided; The described virtual communication file that is meant not is that necessary being is in the FLASH of intelligent storage chip; But in card powers on the main equipment that i.e. insertion moving the time; By the controller in the card to the virtual generation of main equipment; From the angle of main equipment, this document is a necessary being.
The objective of the invention is to realize like this:
The safe and intelligent crypto chip that a kind of virtual communication file makes up automatically is characterized in that: comprising:
The SD interface is used to receive the data that needs that main equipment is sent to the safe and intelligent crypto chip are done safe handling;
Security engine is used to call the interior corresponding security algorithm of card the data that main equipment imports into is handled, and data processing is sent the corresponding program in the main equipment back to through said SD interface after accomplishing;
The security algorithm module is meant the security algorithm module with enciphering and deciphering algorithm and digest algorithm function that is solidificated in the chip, is used for being called the data that main equipment is imported into to handle by security engine;
Secure storage areas in the smart card, the relevant information that the interior needs of card return to the communication file of main equipment that is preset at that is used for storing required data of smart card work and indication of the present invention.
The present invention has following good effect: after powering at card; By the directly virtual tabulation that produces the corresponding FAT table of communication file (file configuration table), communication file of the COS in the card, content, information such as residing sector separately; Solved only this intelligent memory card being used as a security password card and used; Need not use simultaneously the Flash in the card; And remove under the situation of Flash chip in the card problem of the normal operation of the security password function of card in order to practice thrift cost.Practiced thrift cost, ensured that better and effectively card provides the availability of security password service function simultaneously.
Description of drawings:
The three chip architecture synoptic diagram that Fig. 1 generally adopts for intelligent storage chip system.
Fig. 2 is the structural representation of safe and intelligent crypto chip of the present invention.
Embodiment:
Safe and intelligent crypto chip as shown in Figure 2, that a kind of virtual communication file automatically makes up is characterized in that: comprising: the SD interface is used to receive the data that needs that main equipment is sent to the safe and intelligent crypto chip are made safe handling (like encryption and decryption); Security engine is used to call the interior corresponding security algorithm of card the data that main equipment imports into is handled, and data processing is sent the corresponding program in the main equipment back to through said SD interface after accomplishing; The security algorithm module is meant the security algorithm module with enciphering and deciphering algorithm and digest algorithm function that is solidificated in the chip, is used for being called the data that main equipment is imported into to handle by security engine; Secure storage areas in the smart card, the relevant information (like the content in the sector, place of FAT table information and each communication file) that the interior needs of card return to the communication file of main equipment that is preset at that is used for storing required data of smart card work and indication of the present invention.
A kind of virtual communication file method for auto constructing based on the safe and intelligent crypto chip is characterized in that: should comprise the steps: based on the virtual automatic construction method of the communication file of safe and intelligent crypto chip
The first step, after card powered on, main equipment was sent out the SD related command and card communicates, and comprising the upper system in the main equipment file in the card was enumerated pairing SD read command.
In second step, after card was received above-mentioned SD order, the COS in the card (card operating system) is the virtual corresponding information of communication file that produces directly, comprising:
1) FAT table (file configuration table) information.
2) content in the sector, place of each communication file.
Then these information are returned to main equipment according to the form that SD orders.
In the 3rd step, after main equipment is received these information, can think these file necessary beings (because card is to return to its required information like this).And the user can see in the card the virtual file that comes out by card COS in the file browser softwares such as (or similar softwares) of main equipment.
In the 4th step, when the upper layer application in the main equipment need use card to do the security password work of treatment, it is the relevant communication file of read-write just.These read-write operations can import card into through the SD interface again.
The 5th step, receive the read-write operation order of these virtual communication files that come out to it when card after, can therefrom parse and need make the part that security password is handled, and can really not remove to read and write these files (because the untrue existence of these files).Afterwards, card can return to main equipment through the SD interface with the automatic virtual generation corresponding communication file of result.
In the 6th step, main equipment obtains result in virtual generation corresponding communication file.So far operating process finishes.
And described safe and intelligent crypto chip is smart card class password product and PC and portable terminal cryptographic service module by Zhengzhou Xinda Jiean Information Technology Co., Ltd.'s independent development, is a kind of single-chip microcomputer (being MCU, Micro Control Unit).It is to have adopted the password card of Micro SD (being TF) interface that cryptographic service (encryption and decryption, summary, mathematics signature etc.) and safety storing safety storing (safety storing that refers to the secure storage section in the smart card, its security is responsible for by COS in the card) can be provided for the main equipment with TF interface.This security service module can be used in multiple Master device operation system.The function that this safe and intelligent password storage chip provides has: (1) provides the RSA Algorithm (1024,2048) of standard; (2) SM1 algorithm (general configuration parameters) at a high speed is provided; (3) can resist general smart card attacks; (4) randomizer that meets relevant criterion is provided; (5) SD is provided interface; (6) SPI, UCI interface are provided.
Described is a kind of TF smart card based on safe and intelligent password storage chip, uses the realization that it can virtual support communication file method for auto constructing.
Described SD agreement is meant between SD card and TF card etc. and main equipment and communicates the agreement that is adopted that wherein the SD card is meant safe digital card (Secure Digital Card).
Described SPI is Serial Peripheral Interface (Serial Peripheral interface).Be a kind of high speed, full duplex, synchronous communication bus; And on the pin of chip, only take four lines; Practiced thrift the pin of chip, saved the space on the layout of printed circuit board (PCB) (PCB) simultaneously, provided convenience; Start from this characteristic that is simple and easy to usefulness, this communication protocol that present increasing chip is integrated just.
Claims (1)
1. the safe and intelligent crypto chip that makes up automatically of a virtual communication file is characterized in that: comprising:
The SD interface is used to receive the data that needs that main equipment is sent to the safe and intelligent crypto chip are done safe handling;
Security engine is used to call the interior corresponding security algorithm of card the data that main equipment imports into is handled, and data processing is sent the corresponding program in the main equipment back to through said SD interface after accomplishing;
The security algorithm module is meant the security algorithm module with enciphering and deciphering algorithm and digest algorithm function that is solidificated in the chip, is used for being called the data that main equipment is imported into to handle by security engine;
Secure storage areas in the smart card, the relevant information that the interior needs of card return to the communication file of main equipment that is preset at that is used for storing required data of smart card work and indication of the present invention.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201907037U CN202102464U (en) | 2011-06-08 | 2011-06-08 | Virtual communication file automatically constructed security smart cipher chip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201907037U CN202102464U (en) | 2011-06-08 | 2011-06-08 | Virtual communication file automatically constructed security smart cipher chip |
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| Publication Number | Publication Date |
|---|---|
| CN202102464U true CN202102464U (en) | 2012-01-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201907037U Expired - Lifetime CN202102464U (en) | 2011-06-08 | 2011-06-08 | Virtual communication file automatically constructed security smart cipher chip |
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| Country | Link |
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| CN (1) | CN202102464U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108196981A (en) * | 2017-12-29 | 2018-06-22 | 成都三零嘉微电子有限公司 | The service protection strategy of power down during a kind of password TF card communication |
-
2011
- 2011-06-08 CN CN2011201907037U patent/CN202102464U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108196981A (en) * | 2017-12-29 | 2018-06-22 | 成都三零嘉微电子有限公司 | The service protection strategy of power down during a kind of password TF card communication |
| CN108196981B (en) * | 2017-12-29 | 2021-08-27 | 成都三零嘉微电子有限公司 | Power-down service protection strategy during password TF card communication |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP02 | Change in the address of a patent holder |
Address after: 450001 Henan city of Zhengzhou Province, West Zheng Dong new things are integrated services northbound Zhengzhou national trunk highway logistics building 14 floors of A towers Patentee after: Zhengzhou Xinda Jie'an Information Technology Co., Ltd. Address before: 450001 No. 11 Lianhua street, hi tech Development Zone, Henan, Zhengzhou Patentee before: Zhengzhou Xinda Jie'an Information Technology Co., Ltd. |
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| C56 | Change in the name or address of the patentee | ||
| CP02 | Change in the address of a patent holder |
Address after: 450046 Henan city of Zhengzhou Province, East West northbound Zheng Dong new district are integrated services Zhengzhou national trunk highway logistics building 14 floors of A towers Patentee after: Zhengzhou Xinda Jie'an Information Technology Co., Ltd. Address before: 450001 Henan city of Zhengzhou Province, West Zheng Dong new things are integrated services northbound Zhengzhou national trunk highway logistics building 14 floors of A towers Patentee before: Zhengzhou Xinda Jie'an Information Technology Co., Ltd. |
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| CX01 | Expiry of patent term |
Granted publication date: 20120104 |
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| CX01 | Expiry of patent term |