CN202134016U - Safety intelligent password storage chip capable of reconstructing communication files automatically - Google Patents
Safety intelligent password storage chip capable of reconstructing communication files automatically Download PDFInfo
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- CN202134016U CN202134016U CN201120190801U CN201120190801U CN202134016U CN 202134016 U CN202134016 U CN 202134016U CN 201120190801 U CN201120190801 U CN 201120190801U CN 201120190801 U CN201120190801 U CN 201120190801U CN 202134016 U CN202134016 U CN 202134016U
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Abstract
The utility model relates to a safety intelligent password storage chip capable of reconstructing communication files automatically, which faces safety intelligent password storage chips and can reconstruct the communication files automatically so as to enhance usability of safety functions of the safety intelligent password storage chips. The safety intelligent password storage chip comprises a secure digital (SD) interface used for receiving data which need to be stored and sent to the safety intelligent password storage chip by a primary device; a security engine used for judging whether specific instructions exist in the incoming data; a direct memory access (DMA) used for enabling the data to be directly stored in an NANDFLASH when no specific instruction exists; the NANFLASH used for storing data received from the DMA and the communication files safely; and a safety storage area in a smart card which is used for storing data required by the smart card during working and communication file type and filename information which is preset in the smart card. The safety intelligent password storage chip simplifies processes when correction and remediation are carried out, saves time of users, and guarantees usability of the smart card to provide safety password service functions.
Description
Technical field
Thereby the utility model relates to a kind of safe and intelligent password storage chip of rebuilding automatically towards the communication file that can communicate file reconstruction enhancing safe and intelligent password storage chip security function availability automatically of safe and intelligent password storage chip.
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 (promptly with the same ordinary file of storing of common Micro SD (being TF) card; This mode and the utility model are irrelevant); The security password service function that also can provide the front to introduce; 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.
Communication file in the above-mentioned smart memory card system is to issue at card to be created by special hair fastener instrument before the user uses.In the card use, if need handling the professional format chemical industry tool that also must use card manufacturer to provide to the format of card do, the user formats specially, this format has comprised the reconstruction to communication file.And in general, the professional format chemical industry tool that card manufacturer provides is can not offer domestic consumer.So; Just there is a kind of problem in the mode of this can only could foundation through hair fastener instrument or professional format chemical industry tool (or reconstruction) communication file; Even user's (mistake) in the card use has deleted some or all communication file in the card; Will cause card that the security password service function can't be provided again, do initialization or special format again and can only send card back to the card management part.This has influenced the normal use of card security password service function to a certain extent, therefore is badly in need of and will improves this scheme.
Summary of the invention
The purpose of the utility model is to overcome the deficiency that exists in the prior art and a kind of safe and intelligent password storage chip of under the support of safe and intelligent password storage chip, rebuilding automatically based on the communication file that strengthens chip security function availability greatly of safe and intelligent password storage chip is provided.
The purpose of the utility model is achieved in that
The safe and intelligent password storage chip that a kind of communication file is rebuild automatically is characterized in that: comprising: the SD interface is used to receive the data that main equipment is sent to the needs storage of safe and intelligent password storage chip; Security engine is used to judge in the data of importing into have or not specific instruction; DMA is used for when no specific instruction, and these data are directly deposited in the NAND FLASH; NAND FLASH is used for data and storing communication file that safety storing receives from DMA; Secure storage areas in the smart card is used to store the required data of smart card work and the type, the file name information that are preset at the communication file in the card.
Said specific instruction is used for showing to security engine which kind of operation is these data carried out, and is to do to encrypt storage or cryptographic processing, and the concrete instruction type of said specific instruction is specified by the intelligent card chip operating system COS in the security engine.
Said security engine; Also being used in judging the data of importing into, having the operation that shows these data is when making the specific instruction of encryption storage; Call the interior corresponding AES of chip data are done encryption, data directly deposit in the NAND FLASH through said DAM after doing the encryption completion.
Said security engine; Being further used in judging the data of importing into, the operation that shows these data being arranged is when acting on the specific instruction of cryptographic service; Call the interior corresponding AES of chip data are done encryption; Data are sent the corresponding program in the main equipment back to through said SD interface after doing the cryptographic processing completion.
The utlity model has following good effect: detect its communication file state when after card powers on, carrying out initialization automatically; Unusually then rebuild communication file automatically if find file status; Can avoid having deleted the card that some or all communication file causes in the card security password service function can't be provided again, and then can only send card back to the card management part and make initialization or special formative problem again because of (mistake) in the card use of user before this powers on.Thereby revise the flow process when remedying when having simplified appearance so problem, practiced thrift user's time, ensured that better and effectively card provides the availability of security password service function.
Description of drawings
The three chip architecture synoptic diagram that Fig. 1 generally adopts for intelligent storage chip system.
Fig. 2 is the safe and intelligent password storage chip structure synoptic diagram of the utility model.
Embodiment
Safe and intelligent password storage chip as shown in Figure 2, that a kind of communication file is rebuild automatically is characterized in that: comprising: the SD interface is used to receive the data that main equipment is sent to the needs storage of safe and intelligent password storage chip; Security engine is used to judge in the data of importing into have or not specific instruction; DMA is used for when no specific instruction, and these data are directly deposited in the NAND FLASH; NAND FLASH is used for data and storing communication file that safety storing receives from DMA; Secure storage areas in the smart card, the information such as the type that is preset at the interior communication file of card, filename that are used for storing the required data of smart card work and the utility model indication.
Said specific instruction is used for showing to security engine which kind of operation is these data carried out, and is to make to encrypt storage or cryptographic processing.
The concrete instruction type of said specific instruction is specified by the intelligent card chip operating system (COS) in the security engine.
Said security engine, also being used in judging the data of importing into, having the operation that shows these data is when making the specific instruction of encryption storage, calls the interior corresponding AES of chip data are done encryption.
Data directly deposit in the NAND FLASH through said DAM after doing the encryption completion.
Said security engine, being further used in judging the data of importing into, the operation that shows these data being arranged is when acting on the specific instruction of cryptographic service, calls the interior corresponding AES of chip data are done encryption.
Data are sent the corresponding program in the main equipment back to through the SD interface in the safe and intelligent password storage chip after doing the cryptographic processing completion.
A kind of communication file automatic reconstruction method based on safe and intelligent password storage chip is characterized in that: this communication file automatic reconstruction method comprises that card powers on and detects its communication file state after (promptly inserting in the main equipment of open state) automatically and rebuild two steps of communication file automatically.
Automatically detect its communication file state after described card powers on, comprise the steps:
The first step behind the safe and intelligent password storage chip power, is carried out the initial work of card self.
In second step, in the initialization step of card, the security engine in the safe and intelligent password storage chip detects the existence of the communication file among the Flash of card automatically.
In the 3rd step, normal if security engine detects the communication file existence, then initial work is normally accomplished.If not existing then to get into, communication file do not rebuild the communication file step automatically.
Described card is rebuild communication file automatically, comprises the steps:
The first step is searched information such as the type that when the initialization hair fastener, is preset at the communication file in the card, filename in the secure storage areas of security engine in card in the safe and intelligent password storage chip.
In second step, according to type, security engine is partly set up corresponding hidden files folder at the Flash of card chip.
In the 3rd step, security engine is set up the related communication file through creating file command in the hidden files folder of correspondence.
And described safe and intelligent password storage 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; Be that a kind of single-chip microcomputer (is MCU; Micro Control Unit), DMA is provided support.It is the password card that has adopted Micro SD (being TF) interface; Built-in NAND Flash memory module; Cryptographic service (encryption and decryption, summary, mathematics signature etc.) and safety storing (comprise the safety storing of encrypting the secure storage section in storage and the smart card in the NAND FLASH, wherein the safety storing of the secure storage section in the smart card mainly is to be responsible for its security by COS in the card) can be provided for the main equipment with TF interface.This security service module can be used in multiple terminal operating 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 it can support the realization of communication file automatic reconstruction method.
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.
Described 7816 are meant smart card communication protocol ISO/IEC 7816.
Described DMA is meant direct memory access (DMA) (Direct Memory Access), is the valuable feature of all modern computers.Its a kind of high-speed data transmission operation allows direct read data between external apparatus and the storer, does not neither also need CPU to intervene through central processing unit (CPU, Central Processing Unit).Whole data transfer operation is under the control of " dma controller ", to carry out.CPU is except doing some processing when data transmission begins and finish, CPU can carry out other work in transmission course.Like this, in the most of the time, CPU and input and output all are in parallel work-flow.Therefore, the efficient of The whole calculations machine system is improved greatly.
Claims (4)
1. safe and intelligent password storage chip is characterized in that: comprising: the SD interface is used to receive the data that main equipment is sent to the needs storage of safe and intelligent password storage chip; Security engine is used to judge in the data of importing into have or not specific instruction; DMA is used for when no specific instruction, and these data are directly deposited in the NAND FLASH; NAND FLASH is used for data and storing communication file that safety storing receives from DMA; Secure storage areas in the smart card is used to store the required data of smart card work and the type, the file name information that are preset at the communication file in the card.
2. safe and intelligent password storage chip according to claim 1; It is characterized in that: said specific instruction is used for showing to security engine which kind of operation is these data carried out; Be to do to encrypt storage or cryptographic processing, the concrete instruction type of said specific instruction is specified by the intelligent card chip operating system COS in the security engine.
3. safe and intelligent password storage chip according to claim 1; It is characterized in that: said security engine; Also being used in judging the data of importing into, having the operation that shows these data is when making the specific instruction of encryption storage; Call the interior corresponding AES of chip data are done encryption, data directly deposit in the NAND FLASH through said DAM after doing the encryption completion.
4. safe and intelligent password storage chip according to claim 3; It is characterized in that: said security engine; Being further used in judging the data of importing into, the operation that shows these data being arranged is when acting on the specific instruction of cryptographic service; Call the interior corresponding AES of chip data are done encryption, data are sent the corresponding program in the main equipment back to through said SD interface after doing the cryptographic processing completion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120190801U CN202134016U (en) | 2011-06-08 | 2011-06-08 | Safety intelligent password storage chip capable of reconstructing communication files automatically |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120190801U CN202134016U (en) | 2011-06-08 | 2011-06-08 | Safety intelligent password storage chip capable of reconstructing communication files automatically |
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| Publication Number | Publication Date |
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| CN202134016U true CN202134016U (en) | 2012-02-01 |
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| CN201120190801U Expired - Lifetime CN202134016U (en) | 2011-06-08 | 2011-06-08 | Safety intelligent password storage chip capable of reconstructing communication files automatically |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102223227A (en) * | 2011-06-08 | 2011-10-19 | 郑州信大捷安信息技术股份有限公司 | Safe and intelligent code memory chip and automatic communication file reestablishing method thereof |
| 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 CN201120190801U patent/CN202134016U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102223227A (en) * | 2011-06-08 | 2011-10-19 | 郑州信大捷安信息技术股份有限公司 | Safe and intelligent code memory chip and automatic communication file reestablishing method thereof |
| CN102223227B (en) * | 2011-06-08 | 2012-08-29 | 郑州信大捷安信息技术股份有限公司 | Safe and intelligent code memory chip and automatic communication file reestablishing method thereof |
| 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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| 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: 20120201 |
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| CX01 | Expiry of patent term |