CN102307188A - Subscriber identity module (SIM)-based universal serial bus (USB) key encryption/decryption system and encryption/decryption method - Google Patents
Subscriber identity module (SIM)-based universal serial bus (USB) key encryption/decryption system and encryption/decryption method Download PDFInfo
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- CN102307188A CN102307188A CN201110236598A CN201110236598A CN102307188A CN 102307188 A CN102307188 A CN 102307188A CN 201110236598 A CN201110236598 A CN 201110236598A CN 201110236598 A CN201110236598 A CN 201110236598A CN 102307188 A CN102307188 A CN 102307188A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/70—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer
- G06F21/71—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer to assure secure computing or processing of information
- G06F21/72—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer to assure secure computing or processing of information in cryptographic circuits
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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
- H04L63/0485—Networking architectures for enhanced packet encryption processing, e.g. offloading of IPsec packet processing or efficient security association look-up
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Abstract
The invention relates to the technical field of information security, and particularly discloses a subscriber identity module (SIM)-based universal serial bus (USB) key encryption/decryption system and a SIM-based USB key encryption/decryption method. The system comprises a client and a secure digital memory (SD) card, wherein the client performs reading/writing operations on the SD card; an intra-card controller of the SD card resolves written plain/cipher text data and transmits the resolved plain/cipher text data to a SIM; and the SIM embedded into the SD card encrypts/decrypts the received plain/cipher text data, and returns cipher/plain text data for the client to detect and read out. The method comprises that: the client writes the acquired plain/cipher text data into the SD card; the intra-controller in the SD card resolves the written plain/cipher text data and transmits the resolved plain/cipher text data to the SIM in the SD card; the SIM encrypts/decrypts the received plain/cipher text data, and returns the cipher/plain text data; and the client detects and reads the cipher/plain text data out. By the system and the method, the SIM realizes USB key encryption and decryption functions together with handheld equipment by the SD card which serves as a carrier by utilizing the portability and popularity of the handheld equipment and the characteristic of high security coefficient of the SIM.
Description
Technical field
The present invention relates to field of information security technology; Be a kind of USBkey (a kind of secure entity that is carried on the USB communication apparatus) enciphering/deciphering system and method for encryption/decryption specifically based on sim module (Subscriber Identity Module, user identification module).
Background technology
Along with Internet technology and Development of E-business, it is more and more to relate to the secret activity of private data such as personally identifiable information and commercial affairs, makes each field more and more higher to the requirement of information security.Market generally adopts USBkey to realize safety certification now, and it is similar to portable USB flash disk, because of better extensively approval of quilt of fail safe.At present; The Web bank of most of financial institution has all adopted the safety of this technology with protection customer information and transaction; Also be widely used for guaranteeing the authenticity of identity simultaneously at other field, this has demonstrated fully the internal potential and the market prospects of USBkey technology.
At present; Handheld device (like mobile phone, PDA etc.) has become the means of communication that a kind of ten minutes is popularized; But existing USBkey can only use having on the terminals such as PC of USB interface; For the safety service on the handheld device (like mobile-phone payment, palm security, mobile phone value-added service etc.) field; Existing USBkey can not directly use, and this has influenced the USBkey The Application of Technology degree of depth undoubtedly greatly.In addition,, not only increased consumer's Financial cost, also caused bigger potential safety hazard because of causing easily to lose owing to need purchase USBkey specially.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of USBkey enciphering/deciphering system and method for encryption/decryption, realize having the USBkey function of SD Card (Secure Digital Memory Card, secure digital storage card) handheld device based on sim module.
For solving above technical problem, technical scheme provided by the invention is: a kind of USBkey enciphering/deciphering system based on sim module comprises client and is implanted in the SD card in the handheld device; Said client sticks into capable read/write operation according to the SD storage protocol to said SD; Said SD card is provided with SD card internal controller and embeds sim module simultaneously; After resolving, bright/encrypt data that said SD card internal controller will write is sent to said sim module; Said sim module carries out enciphering/deciphering to the bright/encrypt data that receives to be handled, and returns close/clear data and supply said client to detect to read.
More excellent ground; Said SD card is provided with the temporary file memory block; Close/clear data after said sim module enciphering/deciphering is handled is back to said SD card internal controller, deposits SD card temporary file in by said SD card internal controller, offers said client detection afterwards and reads.
More excellent ground, said client writes SD card temporary file with bright/encrypt data, is read and is resolved by said SD card internal controller afterwards.
More excellent ground, said client is connected through the usb data line with said handheld device.
The present invention also provides a kind of USBkey method for encryption/decryption based on sim module, may further comprise the steps:
(10) bright/encrypt data that client will be obtained writes the SD card that is implanted in the handheld device according to the SD storage protocol;
(20) after resolving, bright/encrypt data that the SD card internal controller in the SD card will write is sent to the sim module that embeds in the SD card;
(30) sim module carries out the enciphering/deciphering processing to the bright/encrypt data that receives, and returns close/clear data;
(40) client detects the close close/clear data of reading.
More excellent ground, in the step (30), sim module is judged, and whether bright/encrypt data is complete, if bright/encrypt data is advanced enciphering/deciphering according to preset algorithm handle; If not, keep bright/encrypt data current state.
More excellent ground, the close/clear data after the sim module enciphering/deciphering is handled is back to SD card internal controller, deposits SD card temporary file in by SD card internal controller, offers the client detection afterwards and reads.
More excellent ground, client writes SD card temporary file with bright/encrypt data, reads and resolves to offer SD card internal controller.
More excellent ground, close/bright data that bright/encrypt data that client writes, SD card return all are packaged into the usb data transmission package, and through the transmission of USB transmission channel.
More excellent ground, the user is original treat enciphering/deciphering data, client the enciphering/deciphering data all be packaged into ISO7816 (a kind of smart card international standard) instruction transmission through the USBkey functional unit of client.
More excellent ground, if the user original treat enciphering/deciphering data, client the enciphering/deciphering data exceed ISO7816 instruction specific length, instruction fetch maximum length.
More excellent ground, step (10) before, client executing enciphering/deciphering pre-treatment operation specifically comprises:
Detect whether there is the SD card, if obtain the SD card information and set up the USB transmission channel;
Detect whether there are many SD cards, if, specify a SD to stick into capable enciphering/deciphering operation by the user, if not, specify this unique SD to stick into capable enciphering/deciphering operation;
Whether the SD card of judging appointment meets the enciphering/deciphering functional requirement, if carry out next step operation; If not, prompting user operation failure.
Compared with prior art; The present invention utilizes the portable and universal advantage of handheld devices such as mobile phone, the characteristics that the sim module coefficient of safety is high, allows be embedded in sim module among the SD Card is realized USBkey jointly through this carrier of SD Card and handheld device encryption and decryption functions.During use; Only need sim module is implanted insertion handheld device end in the SD card; Handheld device is connected with the client that the USBkey function software is housed, thereby just can realizes the USBkey function of handheld device easily, it can be widely used in secure data areas such as finance.
Description of drawings
Fig. 1 is the sterogram that the present invention is based on USBkey enciphering/deciphering system one preferred embodiment of sim module;
Fig. 2 is the functional block diagram that the present invention is based on the USBkey enciphering/deciphering system of sim module, the bright communication protocol of its bracket middle finger, and arrow is represented data flow direction;
Fig. 3 is the flow chart that the present invention is based on the USBkey method for encryption/decryption of sim module;
Fig. 4 is the sequential chart that the present invention is based on the USBkey method for encryption/decryption of sim module.
Embodiment
In order to realize being present in sim module among the SD Card identification of the storage of user key and personal identification is reached the function of digital signature, core of the present invention is to make the sim module that is embedded among the SD Card to realize the encryption and decryption functions of USBkey jointly through this carrier of SDCard and handheld device.
In order to make those skilled in the art understand technical scheme of the present invention better, the present invention is done further detailed description below in conjunction with accompanying drawing and specific embodiment.
Referring to Fig. 1, expression the present invention is based on the entity structure of USBkey enciphering/deciphering system one preferred embodiment of sim module.Be without loss of generality, it is example that present embodiment directly connects client (like PC) with mobile phone through the usb data line, and the overall plan that realizes the USBkey function is described.
Entity structure is an example with pc client 1 as shown in Figure 1, connects through USB line 2 (also can be other communication mode) and mobile phone 3 (or other handheld device, like PDA).Wherein: be provided with USBkey functional unit (USBkey function software) 11 in the pc client; Mobile phone 3 is implanted into SD card (SD Card) 31, and it is provided with SD card internal controller (SD Controller) 311 and sim module 312 and SD memory block (SD MEM) 313.
Referring to Fig. 2, expression the present invention is based on the functional structure of the USBkey enciphering/deciphering system of sim module, and wherein the sim module basic function is close for realizing that data add (separating); Pc client can be realized data authentication; SD Controller can carry out deal with data by SD Memory communications protocol (SD storage protocol) or other protocol instructions.
As shown in Figure 2, the USBkey function software that is present in pc client 1 carries out authentication, reading and writing operation through SD Memory communications protocol to the SD Card that is present in the mobile phone.The inner SD Controller of SD Card obtains to write the APDU instruction of resolving after the data and will meet the SIM logic and sends to sim module 312 through the ISO7816 communications protocol; Sim module 312 receives the laggard line data of data and handles, and the result after will handling returns to SD Controller; At this moment, SD Controller can deposit the data of receiving from sim module 312 in the temporary file the SDCard and (be arranged in the temporary file memory block of SD memory block); The USBkey function software of client after detecting dateout is read these data, promptly accomplishes one time data handling procedure this moment.
In the foregoing description, sim module implanted in the SD card insert mobile phone end, mobile phone is connected with the pc client that the USBkey function software is housed, thereby realizes the function of USBkey, can be used for secure data areas such as finance.
Describing in detail on the said system basis, below the USBkey method for encryption/decryption that the present invention is based on sim module is being specified.
Referring to Fig. 3, the flow process of USBkey method for encryption/decryption one preferred embodiment that the present invention is based on sim module is described, key step is:
One, client USBkey software is realized obtaining of clear data, through SD Memory communications protocol bright (close) literary composition is deposited in the temporary file of SD Card.
Two, after SD Card obtains data, become corresponding APDU instruction, adopt the ISO7816 communications protocol to distribute the APDU instruction to sim module through SD Controller recognition data form and with data transaction.
Three, sim module receives that the Data Post mode is:
1, when data are imperfect, do not have any data and return, status word 0x9000 remains unchanged, and returns this status word through the ISO7816 agreement.SD Controller deposits SD Card temporary file in after receiving this status word, after client USBkey software detection is returned to data, continues to send remaining partial data, and the order that SD Controller continues to read in the temporary file sends to sim module.
After sim module had obtained complete data, status word became 0x91XX by 0x9000; Begin the capable factually corresponding security algorithm of logarithm (existing or special algorithm) this moment, and the close/clear data after the enciphering/deciphering processing response is sent to SD Controller through ISO 7816 communications protocol; And SD Controller deposits the result after the sim module calculating in to the temporary file of SD Card after receiving these data, offers client afterwards and detects and read.
Four, client software detects sim module returns among the SD Card encryption and decryption data and is write fashionablely by complete, obtains this close (bright) literary composition through this SD Memory communications protocol.That at this moment, has just accomplished a USBkey adds (separating) close process.
Referring to Fig. 4, expression the present invention is based on the sequential chart of USBkey method for encryption/decryption one preferred embodiment of sim module.This sequential chart is described one in detail and is encrypted or decrypting process, is specially:
1.PC client detects the existence of SD card, specifically is whether pc client has the SD card through the inspection of USB driving timing insertion.
2., then obtain SD card informations such as card vendor's code, Function Identification, COS version number, and set up the USB transmission channel, so that communication later on if be checked through the existence of SD card.
3. if there are many SD cards to exist, then specify certain SD to stick into capable encryption and decryption operation by the user, otherwise, specify this unique SD to stick into capable enciphering/deciphering operation; Also should judge whether the SD card meets the encryption and decryption functions requirement by USBkey function software (functional module) this moment, if do not have encryption and decryption functions, then points out user's operation failure, otherwise carry out next step operation.
4.USBKEY function software reads (deciphering) to be encrypted data of user's input, packet is dressed up the ISO7816 instruction, and send to pc client.If data exceed ISO7816 instruction specific length, then instruction fetch maximum length.
Accomplish above enciphering/deciphering pre-treatment operation and SD is sticked into after the capable authentication operations, carry out concrete encryption and decryption again and handle, detailed process is as described below.Comprise all in the key step that wherein data integrity detects, and does not carry out any operation like incomplete words.
5.PC client is packaged into the usb data transmission package to ISO 7816 instructions, and sends to the SD card through the USB transmission channel.
6.SD Controller analyzes data, whether inspection meets the usb data bag, if do not meet, then is left intact, otherwise data are sent to sim module.
7.SIM module splits packet according to ISO 7816 command formats, and whether inspection meet rule, if do not meet then return error message, otherwise data is encrypted (deciphering) computing.
8.SIM the result that the module handle is encrypted after (deciphering) is packaged into ISO 7816 instructions, sends to SD Controller through the ISO7816 interface.
9.SD Controller dresses up the usb data transmission package to packet, sends to pc client through the USB transmission channel.
10.PC client receive after the data can inspection usb data transmission package integrality, whether meet the usb data packet format, if meet then split packet, otherwise do not process, then data are sent to the USBkey function software.
11.USBkey whether function software can meet the ISO7816 command format by the inspection packet after receiving data; If it is against regulation then point out the user operation failure; Otherwise whether inspection also has unencryption (deciphering) data, if having then repeating step 4～11, until the encrypt/decrypt total data.
Behind data encrypting and deciphering, then carry out the encryption and decryption down-stream, as described below.
12. all data encryptions of user (deciphering) are accomplished, and the result after the encryption (deciphering) is shown.
So far, accomplish a whole set of encryption and decryption process.
It below only is preferred implementation of the present invention; It utilizes the characteristics that handheld device is portable and universal, the sim module coefficient of safety is high; Allow sim module pass through the enciphering/deciphering function that this carrier of SD card and handheld device realize USBkey jointly, its key is to protect following main points:
(1) sim module is realized the storage of security algorithm process and key;
(2) SD Controller completion data are obtained, are changed, and realize distributing and receiving to sim module APDU;
(3) the writing and reading of data content among the SD Card realizes the process of encryption and decryption.
Should be pointed out that above-mentioned preferred implementation should not be considered as limitation of the present invention, protection scope of the present invention should be as the criterion with claim institute restricted portion.For those skilled in the art, do not breaking away from the spirit and scope of the present invention, can also make some improvement and retouching, these improvement and retouching also should be considered as protection scope of the present invention.
Claims (12)
1. the USBkey enciphering/deciphering system based on sim module is characterized in that, comprises client and is implanted in the SD card in the handheld device; Said client sticks into capable read/write operation according to the SD storage protocol to said SD; Said SD card is provided with SD card internal controller and embeds sim module simultaneously; After resolving, bright/encrypt data that said SD card internal controller will write is sent to said sim module; Said sim module carries out enciphering/deciphering to the bright/encrypt data that receives to be handled, and returns close/clear data and supply said client to detect to read.
2. the USBkey enciphering/deciphering system based on sim module as claimed in claim 1; It is characterized in that; Said SD card is provided with the temporary file memory block; Close/clear data after said sim module enciphering/deciphering is handled is back to said SD card internal controller; Deposit SD card temporary file in by said SD card internal controller, offer said client detection afterwards and read.
3. the USBkey enciphering/deciphering system based on sim module as claimed in claim 2 is characterized in that said client writes SD card temporary file with bright/encrypt data, is read and is resolved by said SD card internal controller afterwards.
4. like each described USBkey enciphering/deciphering system of claim 1～3, it is characterized in that said client is connected through the usb data line with said handheld device based on sim module.
5. the USBkey method for encryption/decryption based on sim module is characterized in that, may further comprise the steps:
(10) bright/encrypt data that client will be obtained writes the SD card that is implanted in the handheld device according to the SD storage protocol;
(20) after resolving, bright/encrypt data that the SD card internal controller in the SD card will write is sent to the sim module that embeds in the SD card;
(30) sim module carries out the enciphering/deciphering processing to the bright/encrypt data that receives, and returns close/clear data;
(40) client detects the close close/clear data of reading.
6. the USBkey method for encryption/decryption based on sim module as claimed in claim 5 is characterized in that in the step (30), sim module is judged, and whether bright/encrypt data is complete, if bright/encrypt data is carried out enciphering/deciphering according to preset algorithm handle; If not, keep bright/encrypt data current state.
7. the USBkey method for encryption/decryption based on sim module as claimed in claim 5; It is characterized in that; Close/clear data after the sim module enciphering/deciphering is handled is back to SD card internal controller, deposits SD card temporary file in by SD card internal controller, offers the client detection afterwards and reads.
8. the USBkey method for encryption/decryption based on sim module as claimed in claim 7 is characterized in that client writes SD card temporary file with bright/encrypt data, reads and resolves to offer SD card internal controller.
9. the USBkey method for encryption/decryption based on sim module as claimed in claim 5 is characterized in that, close/bright data that bright/encrypt data that client writes, SD card return all are packaged into the usb data transmission package, and through the transmission of USB transmission channel.
10. the USBkey method for encryption/decryption based on sim module as claimed in claim 5 is characterized in that, the user is original treat enciphering/deciphering data, client the enciphering/deciphering data all be packaged into ISO7816 instruction transmission through the USBkey functional unit of client.
11. the USBkey method for encryption/decryption based on sim module as claimed in claim 10 is characterized in that, if the user original treat enciphering/deciphering data, client the enciphering/deciphering data exceed ISO7816 instruction specific length, instruction fetch maximum length.
12. the USBkey method for encryption/decryption based on sim module as claimed in claim 5 is characterized in that, step (10) before, client executing enciphering/deciphering pre-treatment operation specifically comprises:
Detect whether there is the SD card, if obtain the SD card information and set up the USB transmission channel;
Detect whether there are many SD cards, if, specify a SD to stick into capable enciphering/deciphering operation by the user, if not, specify this unique SD to stick into capable enciphering/deciphering operation;
Whether the SD card of judging appointment meets the enciphering/deciphering functional requirement, if carry out next step operation; If not, prompting user operation failure.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110236598A CN102307188A (en) | 2011-08-17 | 2011-08-17 | Subscriber identity module (SIM)-based universal serial bus (USB) key encryption/decryption system and encryption/decryption method |
| PCT/CN2012/076621 WO2013023478A1 (en) | 2011-08-17 | 2012-06-08 | Sim module based usbkey encryption/decryption system and encryption/decryption method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110236598A CN102307188A (en) | 2011-08-17 | 2011-08-17 | Subscriber identity module (SIM)-based universal serial bus (USB) key encryption/decryption system and encryption/decryption method |
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| Publication Number | Publication Date |
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| CN102307188A true CN102307188A (en) | 2012-01-04 |
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| CN201110236598A Pending CN102307188A (en) | 2011-08-17 | 2011-08-17 | Subscriber identity module (SIM)-based universal serial bus (USB) key encryption/decryption system and encryption/decryption method |
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| CN (1) | CN102307188A (en) |
| WO (1) | WO2013023478A1 (en) |
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| WO2013174321A1 (en) * | 2012-11-13 | 2013-11-28 | 中兴通讯股份有限公司 | Command execution method and device, smart card and mobile terminal |
| CN104239808A (en) * | 2013-06-14 | 2014-12-24 | 北京数码视讯科技股份有限公司 | Method and device for encryption transmission of data |
| WO2015117326A1 (en) * | 2014-07-16 | 2015-08-13 | 中兴通讯股份有限公司 | Method and device for achieving remote payment, and smart card |
| CN104537298A (en) * | 2014-12-04 | 2015-04-22 | 腾讯科技（深圳）有限公司 | Authorizing method and device based on micro-processor card |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2013023478A1 (en) | 2013-02-21 |
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Address after: 519060 Guangdong province Zhuhai Nanping Science and Technology Industrial Park Road No. 8 Applicant after: Eastcompeace Technology Co., Ltd. Address before: 519060 Guangdong province Zhuhai Nanping Science and Technology Industrial Park Road No. 8 Applicant before: Eastcompeace Smart Card Co., Ltd. |
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