CN103702449A - Communication method of subscriber identity module (SIM) card and device - Google Patents
Communication method of subscriber identity module (SIM) card and device Download PDFInfo
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- CN103702449A CN103702449A CN201210376392.2A CN201210376392A CN103702449A CN 103702449 A CN103702449 A CN 103702449A CN 201210376392 A CN201210376392 A CN 201210376392A CN 103702449 A CN103702449 A CN 103702449A
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Abstract
The embodiment of the invention discloses a communication method of a subscriber identity module (SIM) card and a device of the SIM card. The method is implemented by the following steps: a baseband obtains an encrypted SIM card file from a memory chip of mobile communication equipment; the encrypted SIM card file comprises an SIM card encryption algorithm, a hardware unique identifier and an SIM card fixed storage class data; the baseband decrypts the encrypted SIM card file according to an SIM card decryption algorithm library and the hardware unique identifier stored in the mobile communication equipment to obtain the SIM card fixed storage class data; wireless communication is carried out by using the SIM card fixed storage class data. The fixed storage data of the SIM card is stored in the mobile communication equipment, the data processing function of the SIM is integrated in the baseband, the SIM card encryption algorithm is coordinated with the hardware unique identifier to ensure the safety of the encrypted SIM card file, and a hardware body SIM card is not required, so that the device miniaturization is faciliated and hardware resources are saved.
Description
Technical field
The present invention relates to wireless communication technology field, particularly a kind of communication means of client identification module card and equipment.
Background technology
SIM is the abbreviation of (Subscriber Identity Module client identification module), and SIM card is also referred to as smart card, subscriber identification card.SIM card is a chip card that microprocessor is housed, there are 5 modules its inside, and the corresponding function of each module: microprocessor: CPU(Central Processing Unit, central processing unit), program storage: (Read-Only Memory, read-only memory), working storage: RAM(Random Access Memory, data storage: EEPROM(Electrically Erasable Programmable Read-Only Memory, EEPROM (Electrically Erasable Programmable Read Only Memo)) and serial communication unit random asccess memory).Briefly, the hardware components of SIM card comprises microprocessor and memory chip.
The function of SIM card mainly contains: storage user related data, user PIN(Personal Identification Number, individual recognition code) operation and secret algorithm and the key in management, subscriber identity authentication and SIM card.
The data of SIM card storage can be divided into four classes: the first kind is the data of fixedly depositing.These class data are at ME(Mobile Equipment, mobile device) sold and by SIM card center, write before, comprise IMSI(International Mobile Subscriber Identification Number, international mobile subscriber identifier), KI (Ki) etc.; Equations of The Second Kind is the data of the related network temporarily deposited, as: LAI(LocationArea Identity, band of position identification code), the temporary transient identification code of mobile subscriber (Temporary Mobile Subscriber Identity, TMSI), forbid the public telephone network code etc. of access; The 3rd class is relevant service code, as PIN (PIN), PUK (PIN Unlocking Key, PUK), charging rate etc.; The 4th class is telephone directory book, is the telephone number that user inputs at any time.
In SIM card, the most responsive data are secret algorithm A3, A8, Ki, PIN, PUK and Kc.A3, A8 algorithm write when production SIM card, cannot read.PIN code can oneself be set by user on mobile phone, and PUK code is held by network operator, and Kc is derived by Ki in ciphering process.
Between SIM and baseband chip, relation is: baseband chip and SIM card are carried out data communication, and by SIM card relevant user information by RF(radio frequency, radio frequency) send to wireless network; The data that baseband chip also can be received RF simultaneously send to SIM card, so that the processing of SIM card data and renewal.
Inventor finds in realizing the process of the embodiment of the present invention: in wireless module or end product, need to configure at present the entity of SIM card, in the hardware circuit board design of wireless module or terminal, must leave a large amount of areas and put SIM card seat; SIM card takes up room and is unfavorable for device miniaturization, also takies in addition more hardware resource.
Summary of the invention
The embodiment of the present invention provides a kind of communication means and equipment of client identification module card, for realizing soft SIM card, realizes device miniaturization and saves hardware resource.
The embodiment of the present invention provides a kind of communication means of client identification module card, comprising:
Base band is obtained the client identification module SIM card file of encryption from the storage chip in mobile communication equipment; The SIM card file including of described encryption: SIM card cryptographic algorithm, hardware unique identifier, SIM card are fixedly deposited class data;
Base band is according to being stored in SIM card decipherment algorithm storehouse and the hardware unique identifier in mobile communication equipment, and the SIM card file of described encryption is decrypted and obtains described SIM card and fixedly deposit class data;
Use described SIM card fixedly to deposit class data and carry out radio communication.
The embodiment of the present invention also provides a kind of mobile communication equipment, comprising: base band and storage chip;
Storage chip, for the client identification module SIM card file of storage encryption; The SIM card file including of described encryption: SIM card cryptographic algorithm, hardware unique identifier, SIM card are fixedly deposited class data;
Base band, obtains the soft client identification module SIM card file of encryption for the storage chip in mobile communication equipment; According to being stored in SIM card decipherment algorithm storehouse and the hardware unique identifier in mobile communication equipment, the SIM card file of described encryption is decrypted and obtains described SIM card and fixedly deposit class data; Use described SIM card fixedly to deposit class data and carry out radio communication.
As can be seen from the above technical solutions, the embodiment of the present invention has the following advantages: the fixed storage data of SIM card are stored in mobile communication equipment, the data processing function of SIM is integrated in base band, by SIM card cryptographic algorithm and hardware unique identifier, coordinate the fail safe of the SIM card file that guarantees encryption, this scheme does not need hardware entities SIM card, thereby be conducive to device miniaturization, and save hardware resource.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, below the accompanying drawing of required use during embodiment is described is briefly introduced, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is embodiment of the present invention method flow schematic diagram;
Fig. 2 is embodiment of the present invention device structure schematic diagram;
Fig. 3 is embodiment of the present invention device structure schematic diagram;
Fig. 4 is embodiment of the present invention device structure schematic diagram;
Fig. 5 is embodiment of the present invention device structure schematic diagram;
Fig. 6 is embodiment of the present invention device structure schematic diagram.
Embodiment
In order to make the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing, the present invention is described in further detail, and obviously, described embodiment is only a part of embodiment of the present invention, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making all other embodiment that obtain under creative work prerequisite, belong to the scope of protection of the invention.
The embodiment of the present invention provides a kind of communication means of client identification module card, as shown in Figure 1, comprising:
101: base band is obtained the client identification module SIM card file of encryption from the storage chip in mobile communication equipment; The SIM card file including of above-mentioned encryption: SIM card cryptographic algorithm, hardware unique identifier, SIM card are fixedly deposited class data;
The SIM card file that above-mentioned storage chip in mobile communication equipment obtains encryption comprises: the SIM card file that obtains encryption from many storage chip encapsulation (MCP, Multi-Chip Package) storage chips of mobile communication equipment; Or, from obtain the SIM card file of encryption independent memory silicon wafer in same finished chip with base band integrated circuit silicon wafer package; Or, in above-mentioned baseband chip integrated circuit silicon wafer, integrated embedded memory, obtain the SIM card file of encryption.Subsequent embodiment will be illustrated with regard to these three kinds of situations respectively.
The SIM card file of above-mentioned encryption can be by production firm, SIM card center or operator's programming, and the concrete executive agent embodiment of the present invention of the SIM card file programming of encryption will not limit this.
Preferably, the electric fuse identifier (EFUSE ID) that above-mentioned hardware unique identifier is above-mentioned base band.
Alternatively, above-mentioned SIM card is fixedly deposited class data and is comprised: IMSI, Ki code etc., more specifically comprise: IMSI, No. Ki, KI, user profile, network data, service code and telephone number.
102: base band is according to being stored in SIM card decipherment algorithm storehouse and the hardware unique identifier in mobile communication equipment, the SIM card file of above-mentioned encryption is decrypted and obtains above-mentioned SIM card and fixedly deposit class data;
Above-mentioned SIM card decipherment algorithm storehouse and the hardware unique identifier being stored in mobile communication equipment comprises: be stored in SIM card decipherment algorithm storehouse and hardware unique identifier in baseband chip.
103: use above-mentioned SIM card fixedly to deposit class data and carry out radio communication.
Above scheme, the fixed storage data of SIM card are stored in mobile communication equipment, the data processing function of SIM is integrated in base band, by SIM card cryptographic algorithm and hardware unique identifier, coordinate the fail safe of the SIM card file that guarantees encryption, this scheme does not need hardware entities SIM card, thereby be conducive to device miniaturization, and save hardware resource.
Embodiment of the present invention scheme, refer to Fig. 2 to Fig. 4, the cryptographic algorithm at SIM card center, common SOFT SIM file (are contained No. IMSI, Ki code etc.) and electric fuse identifier (EFUSE ID) three aspects: that dispatches from the factory of baseband chip encrypt and generate the SOFT SIM file of encrypting, by the SOFT SIM file programming of encrypting in wireless module or terminal.Wherein EFUSE writes in advance for chip production process for No. ID, can not revise.Guarantee that the SOFT SIM file of encrypting is not replicated, usurps, guaranteed like this fail safe and the uniqueness of the SOFT SIM file of encryption.The SOFT SIM file programming method of wherein encrypting can be: when 1, wireless module or terminal are dispatched from the factory, by production firm's programming; 2, wireless module or terminal are sold before by the programming of SIM card center; 3, user goes to the direct programming in operator business hall.Following examples are by SIM card file (the SIM card file: deposit position difference SOFT SIM file) illustrates respectively with regard to encrypting respectively.
As shown in Figure 2, the SOFT SIM file of encryption is deposited in the MCP of wireless module or terminal.
As shown in Figure 3, the SOFT SIM file of encryption deposit in wireless module or terminal with base band integrated circuit silicon wafer package independent memory silicon wafer in same finished chip.
As shown in Figure 4, the SOFT SIM file of encryption is deposited in the interior integrated embedded memory of baseband chip integrated circuit silicon wafer of wireless module or terminal.
The soft SIM card that the embodiment of the present invention provides substitutes entity SIM card and realizes wireless module or terminal: remove required SIM card partial circuit in conventional wireless module or terminal, choose suitable many storage chip encapsulation (MCP, Multi-Chip Package) storage chip, the data of storage SIM card; Based on baseband chip, to complete the function of SIM card microprocessor on the other hand.Above scheme only need to be in wireless module or terminal, the data in storage SIM card.The memory space of storage SOFT SIM, can be in the MCP of baseband chip outside chip, or, with base band integrated circuit silicon wafer package in same finished chip in independent memory silicon wafer, or, in above-mentioned baseband chip integrated circuit silicon wafer in integrated embedded memory.And the function that in SIM card, microprocessor is realized is replaced by baseband chip.
Take wireless module in Fig. 4 or the soft SIM card implementation of terminal is example, and implementation is implemented as follows:
First, read SIMSOFT SIM file, particularly: the soft SIM card function mainly baseband chip in wireless module or terminal and outside MCP completes.After the SOFT SIM file of wireless module or the complete encryption of terminal programming, in MCP, there is the SOFT SIM file of encryption.Baseband chip reads the SOFT SIM file of encrypting in MCP.
Then, deciphering SIMSOFT SIM file, particularly: the information that deciphering is used is provided by two aspects: the decipherment algorithm storehouse providing for SIM card center on the one hand; Be No. EFUSEID of baseband chip on the other hand.EFUSE ID writes in advance in baseband chip production process, is not revisable, has uniqueness, consistent with the EFUSE ID using in ciphering process.Can guarantee like this SOFT SIM file security of the encryption in MCP.
Finally, carry out radio communication, particularly: at baseband chip, complete after the deciphering of the SOFT SIM file to encrypting, can get common SOFT SIM file (comprising the data such as No. IMSI, Ki code, user profile, network data, service code and telephone directory book), can by RF and wireless network, communicate accordingly.
Fig. 3 scheme, be with base band integrated circuit silicon wafer package in same finished chip independent memory silicon wafer for the SOFT SIM file of storage encryption.So just save baseband chip and the direct interface of outside MCP chip, thereby avoided appropriator by monitoring that interface obtains deciphering flow process, guaranteed the confidentiality of soft SIM card scheme.Concrete implementation, with Fig. 2 scheme, repeats no more.
Fig. 4 scheme is integrated embedded memory in baseband chip integrated circuit silicon wafer, for the SOFT SIM file of storage encryption.Concrete implementation, with Fig. 2 scheme, repeats no more.
The embodiment of the present invention also provides a kind of mobile communication equipment, as shown in Figure 5, comprising:
Above scheme, the fixed storage data of SIM card are stored in mobile communication equipment, the data processing function of SIM is integrated in base band 501, by SIM card cryptographic algorithm and hardware unique identifier, coordinate the fail safe of the SIM card file that guarantees encryption, this scheme does not need hardware entities SIM card, thereby be conducive to device miniaturization, and save hardware resource.
Alternatively, above-mentioned storage chip 502 is: many storage chip encapsulation (MCP of mobile communication equipment, Multi-Chip Package) storage chip, or, with base band 501 integrated circuit silicon wafer package independent memory silicon wafer in same finished chip, or, the embedded memory of above-mentioned base band 501 chip integrated circuit silicon wafer Embeddeds.
Alternatively, above-mentioned base band 501, specifically for obtaining the SIM card file of encryption in many storage chip encapsulation (MCP, the Multi-Chip Package) storage chips 502 from mobile communication equipment; Or, from obtain the SIM card file of encryption independent memory silicon wafer in same finished chip with base band 501 integrated circuit silicon wafer package; Or, from the embedded memory of above-mentioned base band 501 chip integrated circuit silicon wafer Embeddeds, obtain the SIM card file of encryption.
Alternatively, as shown in Figure 6, above-mentioned base band 501 chips comprise: on-chip memory 601, and for storing SIM card decipherment algorithm storehouse and hardware unique identifier.
Alternatively, above-mentioned storage chip 502, for depositing above-mentioned hardware unique identifier, comprising: specifically for depositing the electric fuse identifier of above-mentioned base band 501;
Above-mentioned base band 501, specifically for according to being stored in SIM card decipherment algorithm storehouse in mobile communication equipment and the electric fuse identifier of above-mentioned base band 501, is decrypted and obtains above-mentioned SIM card and fixedly deposit class data the SIM card file of above-mentioned encryption.
Alternatively, above-mentioned storage chip 502, fixedly deposits class data and comprises for depositing SIM card: specifically for depositing international mobile subscriber identifier IMSI, No. Ki, KI, user profile, network data, service code and telephone number.
It should be noted that, in above-mentioned mobile communication equipment embodiment, included unit is just divided according to function logic, but be not limited to above-mentioned division, as long as can realize corresponding function; In addition, the concrete title of each functional unit also, just for the ease of mutual differentiation, is not limited to protection scope of the present invention.
In addition, one of ordinary skill in the art will appreciate that all or part of step realizing in above-mentioned each embodiment of the method is to come the hardware that instruction is relevant to complete by program, corresponding program can be stored in a kind of computer-readable recording medium, the above-mentioned storage medium of mentioning can be memory, disk or CD etc.
These are only preferably embodiment of the present invention; but protection scope of the present invention is not limited to this; anyly be familiar with those skilled in the art in the technical scope that the embodiment of the present invention discloses, the variation that can expect easily or replacement, within all should being encompassed in protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.
Claims (10)
1. a communication means for client identification module card, is characterized in that, comprising:
Base band is obtained the client identification module SIM card file of encryption from the storage chip in mobile communication equipment; The SIM card file including of described encryption: SIM card cryptographic algorithm, hardware unique identifier, SIM card are fixedly deposited class data;
Base band is according to being stored in SIM card decipherment algorithm storehouse and the hardware unique identifier in mobile communication equipment, and the SIM card file of described encryption is decrypted and obtains described SIM card and fixedly deposit class data;
Use described SIM card fixedly to deposit class data and carry out radio communication.
2. method according to claim 1, is characterized in that, the client identification module SIM card file that described storage chip in mobile communication equipment obtains encryption comprises:
From many storage chip encapsulation MCP of mobile communication equipment, obtain the SIM card file of encryption; Or, from obtain the SIM card file of encryption independent memory silicon wafer in same finished chip with base band integrated circuit silicon wafer package; Or, in described baseband chip integrated circuit silicon wafer, integrated embedded memory, obtain the SIM card file of encryption.
3. method according to claim 1, is characterized in that, described in the SIM card decipherment algorithm storehouse and the hardware unique identifier that are stored in mobile communication equipment comprise:
Be stored in SIM card decipherment algorithm storehouse and hardware unique identifier in baseband chip.
4. according to method described in claims 1 to 3 any one, it is characterized in that,
The electric fuse identifier that described hardware unique identifier is described base band.
5. according to method described in claims 1 to 3 any one, it is characterized in that,
SIM card is fixedly deposited class data and is comprised: international mobile subscriber identifier IMSI, No. Ki, KI, user profile, network data, service code and telephone number.
6. a mobile communication equipment, is characterized in that, comprising: base band and storage chip;
Storage chip, for the client identification module SIM card file of storage encryption; The SIM card file including of described encryption: SIM card cryptographic algorithm, hardware unique identifier, SIM card are fixedly deposited class data;
Base band, obtains the client identification module SIM card file of encryption for the storage chip in mobile communication equipment; According to being stored in SIM card decipherment algorithm storehouse and the hardware unique identifier in mobile communication equipment, the SIM card file of described encryption is decrypted and obtains described SIM card and fixedly deposit class data; Use described SIM card fixedly to deposit class data and carry out radio communication.
7. mobile communication equipment according to claim 6, is characterized in that,
Described storage chip is: many storage chip encapsulation MCP storage chips of mobile communication equipment, or, with base band integrated circuit silicon wafer package independent memory silicon wafer in same finished chip, or, integrated embedded memory in described baseband chip integrated circuit silicon wafer.
Described base band, specifically for obtaining the SIM card file of encryption the many storage chip encapsulation MCP storage chips from mobile communication equipment; Or, from obtain the SIM card file of encryption independent memory silicon wafer in same finished chip with base band integrated circuit silicon wafer package; Or, in described baseband chip integrated circuit silicon wafer, integrated embedded memory, obtain the SIM card file of encryption.
8. mobile communication equipment according to claim 6, is characterized in that, described baseband chip comprises:
On-chip memory, for storing SIM card decipherment algorithm storehouse and hardware unique identifier.
9. according to mobile communication equipment described in claim 6 to 8 any one, it is characterized in that,
Described storage chip, for depositing described hardware unique identifier, comprising: specifically for depositing the electric fuse identifier of described base band;
Described base band, specifically for according to being stored in SIM card decipherment algorithm storehouse in mobile communication equipment and the electric fuse identifier of described base band, is decrypted and obtains described SIM card and fixedly deposit class data the SIM card file of described encryption.
10. according to mobile communication equipment described in claim 6 to 8 any one, it is characterized in that,
Described storage chip, fixedly deposits class data and comprises for depositing SIM card: specifically for depositing international mobile subscriber identifier IMSI, No. Ki, KI, user profile, network data, service code and telephone number.
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| CN201210376392.2A CN103702449B (en) | 2012-09-27 | 2012-09-27 | The communication means and equipment of a kind of client identification module card |
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| CN201210376392.2A CN103702449B (en) | 2012-09-27 | 2012-09-27 | The communication means and equipment of a kind of client identification module card |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108601016A (en) * | 2017-09-26 | 2018-09-28 | 深圳普创天信科技发展有限公司 | A kind of production of soft SIM card, use, processing method and processing device |
| CN109511114A (en) * | 2018-12-13 | 2019-03-22 | 北京树米网络科技有限公司 | Configure the method and device of seed IMSI/Ki associated key |
| CN111246480A (en) * | 2020-01-10 | 2020-06-05 | 中移（杭州）信息技术有限公司 | Application communication method, system, equipment and storage medium based on SIM card |
| CN112231244A (en) * | 2020-12-21 | 2021-01-15 | 深圳杰睿联科技有限公司 | SIM card file erasing and writing system and method applied to SoftSIM and readable storage medium |
-
2012
- 2012-09-27 CN CN201210376392.2A patent/CN103702449B/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108601016A (en) * | 2017-09-26 | 2018-09-28 | 深圳普创天信科技发展有限公司 | A kind of production of soft SIM card, use, processing method and processing device |
| WO2019061876A1 (en) * | 2017-09-26 | 2019-04-04 | 深圳普创天信科技发展有限公司 | Soft sim card production, use, processing method and device |
| CN109511114A (en) * | 2018-12-13 | 2019-03-22 | 北京树米网络科技有限公司 | Configure the method and device of seed IMSI/Ki associated key |
| CN109511114B (en) * | 2018-12-13 | 2021-09-24 | 北京树米网络科技有限公司 | Method and device for configuring seed IMSI/Ki associated key |
| CN111246480A (en) * | 2020-01-10 | 2020-06-05 | 中移（杭州）信息技术有限公司 | Application communication method, system, equipment and storage medium based on SIM card |
| CN112231244A (en) * | 2020-12-21 | 2021-01-15 | 深圳杰睿联科技有限公司 | SIM card file erasing and writing system and method applied to SoftSIM and readable storage medium |
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| CN103702449B (en) | 2017-11-07 |
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