CN105307161A - Repair method and apparatus of SIM card encrypted files - Google Patents
Repair method and apparatus of SIM card encrypted files Download PDFInfo
- Publication number
- CN105307161A CN105307161A CN201510634700.0A CN201510634700A CN105307161A CN 105307161 A CN105307161 A CN 105307161A CN 201510634700 A CN201510634700 A CN 201510634700A CN 105307161 A CN105307161 A CN 105307161A
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- sim card
- encrypt file
- card encrypt
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
- H04W12/02—Protecting privacy or anonymity, e.g. protecting personally identifiable information [PII]
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- Computer Security & Cryptography (AREA)
- Computer Networks & Wireless Communication (AREA)
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Abstract
Embodiments of the invention provide a repair method and apparatus of SIM card encrypted files, and relates to the technical field of communication. The problem in the prior art that the validity of an SIM card cannot be identified due to the abnormality of the SIM card encrypted file of a terminal device to influence the implementation of call, internet surfing and other functions. The specific scheme is as follows: judging whether an internal memory space of a first SIM card encrypted file is equal to a standard value, if not, deleting the internal memory space of the first SIM card encrypted file, wherein the standard value is the internal memory space of a normal SIM card encrypted file; and using an encryption algorithm to generate a second SIM card encrypted file based on content information needing to be locked of the terminal device. The repair method and apparatus provided by the embodiments of the invention are used for repairing the SIM card encrypted files.
Description
Technical field
The present invention relates to communication technical field, particularly relate to a kind of restorative procedure and device of SIM card encrypt file.
Background technology
Along with the fast development of the communication technology, intelligent terminal plays original larger effect in people's daily life.People not only can utilize these terminal equipments to carry out voice call, can also be undertaken that video is viewed and admired, file transfer etc. by online.
For mobile phone and some other terminal equipments with SIM card, some functions relevant to SIM card such as call, online be realized and need ensure that SIM card is in normal operating state.When terminal equipment insertion SIM card carries out initialize flow, after need completing the checking of SIM card validity, SIM card could normally work, and wherein the checking of SIM validity needs the relevant information in reading SIM card encrypt file.
Concrete reason is: when mobile phone power-on starts, be first AP(APPProcessor) start, after AP completes initialization, guide MP(ModemProcessor) start, final AP and MP collaborative work realizes the various function of mobile phone.The foundation of SIM card encrypt file performs on MP, and this file cannot directly be accessed for AP.SIM card encrypt file and if only if mobile phone first time start time create, later start can not carry out initialization operation.Described SIM card encrypt file is arranged in the EFS/FFS region of terminal equipment, for preserving some enciphered messages of terminal equipment, lock-in range (carrier-lock during as encrypted, subnet mask locking etc., represent with IndicationFeature), PUK (PUK that each lock-in range is corresponding different), unlocks number of times and does not need the value etc. that locks.When terminal equipment insertion SIM card carries out initialize flow, the SIM card encrypt file that first time start creates need be read, decipher the corresponding informance extracted in the characteristic value and SIM card locked according to specific algorithm and compare, complete the identification of card.Such as, when needs locking carrier (MCC, MNC), the decipherment algorithm of agreement is used to extract information (the mainly MCC extracted in Networklock relevant information and SIM card, MNC) compare, if coupling, then do not need to input PUK, can use, if do not mated, then need to input PUK, after verification, could normally use.
In the use procedure of user, there will be because SIM card encrypt file is abnormal, as the reasons such as abnormal power-down, SIM card encrypt file are maliciously tampered cause normally identifying SIM card, thus the problem that the function causing terminal equipment relevant to SIM card or application cannot normally use.Therefore be necessary that proposing a kind of restorative procedure for SIM card encrypt file exception solves this problem.
Summary of the invention
Embodiment of the present invention technical problem to be solved is the restorative procedure providing a kind of SIM card encrypt file, solve terminal equipment and cause the identification that cannot realize card validity because of the exception of SIM card encrypt file, thus affect the realization of the functions such as terminal equipment online.
For achieving the above object, the embodiment of the present invention adopts following technical scheme:
A restorative procedure for SIM card encrypt file, comprising:
Judge whether the memory headroom of the first SIM card encrypt file equals standard value, if not, delete described first SIM card encrypt file, described standard value is the memory headroom of normal SIM card encrypt file;
The content information that need lock based on terminal equipment adopts cryptographic algorithm to generate the second SIM card encrypt file.
Further, described method also comprises:
When the memory headroom of described first SIM card encrypt file equals standard value, whether the content information of the described first SIM card encrypt file of further detection equals to encrypt pre-stored values, and described encryption pre-stored values is for generating the parameter value of SIM card encrypt file when described terminal equipment first time, start powered on.
If be not equal to, then delete described first SIM card encrypt file.
Wherein, judge whether the memory headroom of the first SIM card encrypt file equals standard value and comprise:
Read the encrypt file of described SIM card from terminal equipment, obtain the memory headroom of the first SIM card encrypt file;
The standard value prestored in reading terminal equipment, judges whether the memory headroom of the first SIM card encrypt file obtained equals standard value.
Wherein, whether the content information detecting the first SIM card encrypt file equals encryption pre-stored values comprises:
From terminal equipment, read the encrypt file of described SIM card, obtain the content information of the first SIM card encrypt file;
The encryption pre-stored values prestored in reading terminal equipment, compares the first SIM card encrypt file content information obtained and encryption pre-stored values;
If exist inconsistent, then judge that the content information of the first SIM card encrypt file is not equal to encryption pre-stored values.
It should be noted that the content information of described first SIM card encrypt file comprises in the information relevant to terminal equipment authority such as lock-in range, PUK, unblock number of times one or more.
The restorative procedure of a kind of SIM card encrypt file that the embodiment of the present invention provides, by detecting the abnormality of SIM card encrypt file and providing new available SIM card encrypt file, ensure that the SIM card of terminal equipment normally can read the identification of the content realization card of encrypt file, thus ensure that terminal equipment can normally use the business such as the call relevant to SIM card, online.
The embodiment of the present invention another technical problem to be solved is the prosthetic device providing a kind of SIM card encrypt file, solve terminal equipment and cause the identification that cannot realize card validity because of the exception of SIM card encrypt file, thus affect the realization of the functions such as terminal equipment call, online.
For achieving the above object, the embodiment of the present invention adopts following technical scheme:
A prosthetic device for SIM card encrypt file, comprising:
Judge module, for judging whether the memory headroom of described first SIM card encrypt file equals standard value;
Removing module, for deleting described first SIM card encrypt file;
Generation module, for generating described second SIM card encrypt file.
Further, described device also comprises:
Detection module, for when the memory headroom of the first SIM card encrypt file equals standard value, whether the content information detecting the first SIM card encrypt file equals to encrypt pre-stored values.
Wherein, described judge module comprises:
First acquiring unit, for obtaining the memory headroom of the first SIM card encrypt file;
Second acquisition unit, for obtaining standard value;
Judging unit, for judging whether the memory headroom of described first SIM card encrypt file equals standard value.
Wherein, described generation module comprises:
Acquiring unit, for obtaining the content information that terminal equipment need lock;
Generation unit, the content information for locking based on acquisition terminal equipment adopts cryptographic algorithm to generate the second SIM card encrypt file.
Wherein, described detection module comprises:
Acquiring unit, for obtaining the content information of the first SIM card encrypt file;
Second acquisition unit, for obtaining encryption pre-stored values;
Contrast unit, for comparing the first SIM card encrypt file content information obtained and described encryption pre-stored values.
The prosthetic device of a kind of SIM card encrypt file that the embodiment of the present invention provides, can realize the detection of abnormal SIM encrypt file and generate new SIM card encrypt file, ensure that the SIM card of terminal equipment normally can read the content of encrypt file, thus ensure that terminal equipment can normally use the business such as the call relevant to SIM card, online.
Accompanying drawing explanation
Fig. 1 is the flow chart one of embodiment of the present invention SIM card encrypt file restorative procedure
Fig. 2 is the flowchart 2 of embodiment of the present invention SIM card encrypt file restorative procedure
Fig. 3 is the schematic diagram one of embodiment of the present invention SIM card encrypt file prosthetic device
Fig. 4 is the schematic diagram two of embodiment of the present invention SIM card encrypt file prosthetic device
Fig. 5 is the structure chart one of embodiment of the present invention SIM card encrypt file prosthetic device
Fig. 6 is the structure chart two of embodiment of the present invention SIM card encrypt file prosthetic device
Fig. 7 is the structure chart two of embodiment of the present invention SIM card encrypt file prosthetic device.
Embodiment
In order to make the object, technical solutions and advantages of the present invention clearly further, below in conjunction with drawings and the specific embodiments, the present invention is described in further detail, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiment.Based on embodiments of the invention, other embodiments that those skilled in the art obtains under the prerequisite not paying creative work, all belong to the scope of protection of the invention.
In the embodiment of the present invention, terminal equipment can be the terminal that mobile phone, panel computer etc. can insert SIM card.
SIM card encrypt file created when start powers on automatically in terminal equipment first time, be stored in the EFS/FFS region of terminal equipment, for preserving some enciphered messages of terminal equipment, lock-in range (carrier-lock during as encrypted, subnet mask locking etc., represent with IndicationFeature), PUK (PUK that each lock-in range is corresponding different), unlocks number of times and does not need the value etc. that locks.
SIM card encrypt file is used for judging when starting up of terminal initialization whether inserted SIM card is effective card that terminal equipment is supported, such as limits and only supports that effective SIM card that the mobile phone of mobile network allows is mobile SIM card.
The restorative procedure of a kind of SIM card encrypt file of the embodiment of the present invention, as shown in Figure 1, comprising:
101. judge whether the memory headroom of the first SIM card encrypt file equals standard value; If not, described first SIM card encrypt file is deleted;
Concrete, judge whether the memory headroom of the first SIM card encrypt file equals standard value and comprise:
Read the encrypt file of described first SIM card from terminal equipment, obtain the memory headroom of the first SIM card encrypt file;
The standard value prestored in reading terminal equipment, judges whether the memory headroom of the first SIM card encrypt file obtained equals standard value.
The memory headroom of wherein said first SIM card encrypt file can by calling get () or getsize () function obtains from the storage directory mmgsdi/ of end devices SIM card encrypt file.
Wherein, described first SIM card encrypt file is the SIM card encrypt file stored in terminal equipment.
Wherein, described standard value is the memory headroom of normal SIM card encrypt file, is pre-stored in terminal equipment, and conventional has 271byte or 305byte.
102. content informations that need lock based on terminal equipment adopt cryptographic algorithm to generate the second SIM card encrypt file.
Exemplary, suppose to need in SIM card encrypt file the content locked be Networklock, Networksubsetlock.The MCC/MNC parameter that Networklock is corresponding is a data set, during encryption with this data set for seed, intrinsic accidental enciphering algorithm is adopted to generate encrypt file corresponding to Networklock, same mode generates the encrypt file of Networksubset, and each encrypt file is deposited store path into SIM card encrypt file according to the order pre-set with TLV form.
Wherein, the content information that described terminal equipment need lock comprise in the information relevant to terminal equipment authority such as lock-in range, PUK, unblock number of times one or more.
Wherein, described cryptographic algorithm is stored in terminal equipment, is a random algorithm.
The restorative procedure of a kind of SIM card encrypt file of the embodiment of the present invention, as shown in Figure 2, comprising:
201. judge whether the memory headroom of the first SIM card encrypt file equals standard value; Whether the content information if so, detecting described first SIM card encrypt file equals to encrypt pre-stored values.
Concrete, whether the content information detecting the first SIM card encrypt file equals encryption pre-stored values comprises:
From terminal equipment, read the encrypt file of described SIM card, obtain the content information of the first SIM card encrypt file;
The encryption pre-stored values prestored in reading terminal equipment, compares the content information of the first SIM card encrypt file obtained and encryption pre-stored values;
If exist inconsistent, then judge that the content information of the first SIM card encrypt file is not equal to encryption pre-stored values.
Exemplary, the detection of content information is carried out according to the order described in table 1.Suppose that the numerical value of FeatureIndicator five grades in the first encrypt file is respectively 1,0,0,0,0, the encryption pre-stored values FeatureIndicator of terminal equipment is 0,0,0,0,0, then judge that the first SIM card encrypt file content is abnormal; If the encryption pre-stored values FeatureIndicator of terminal equipment is 1,0,0,0,0, then this information content is normal, continues to judge PermFeatureIndicator.
Wherein, the encrypted content of SIM card encrypt file comprises the scope indicated value of SIM card needs locking, as the content that carrier-lock, subnet mask locking etc. and other needs are encrypted, as shown in table 1, specifically comprise FeatureIndicator, PermFeatureIndicator, SIMLOCKCodes, DCK, DCKCounter, UnblockControlCounter, UnblockCKCounter and LockdownData, each several part content is according to TLV(TypeLengthValue) form deposits.
Table 1
Wherein said FeatureIndicator is end devices SIM card encrypt file characteristic value mark, for showing the grade that SIM card needs lock, specifically be divided into five grade Networklock, Networksubsetlock, Serviceproviderlock, Corporateproviderlock, SIM-basedlock, these five grades arrange according to order described in table 1 successively, and when terminal equipment needs to lock certain grade, corresponding numerical value is 1.Exemplary, above-mentioned FeatureIndicator is an array, and the number of the element data comprised in array is corresponding with the number of the locking grade comprised in this encrypt file, and the locking grade that each element data correspondence one is different.Such as, if the characteristic value in encrypt file comprises 5 locking grade (network locked, subnet mask locks, carrier-lock, company supplier locking and SIM card locking), 5 the element data B [0] then comprised in this characteristic value, B [1], B [2], B [3] and B [4], grade is locked respectively corresponding with above-mentioned 5, such as, when element data corresponding to network locked is B [0], if the value of this B [0] is 0, then illustrate that this mobile terminal does not need to carry out network locked, if now B [0]-B [4] is 0, then terminal does not need to carry out any lock operation to card, the positive general knowledge card of mobile terminal, if when the value of this B [0] is not 0, explanation needs this network by mobile terminal to lock, this mobile terminal needs MCC and MNC obtained from encrypt file to mate with MCC and MNC obtained from SIM card.
Wherein, described PermFeatureIndicator needs permanent above-mentioned locking grade of closing for identifying SIM card; Described SIMLOCKCodes is used for the lockcode encrypted to all FeatureIndicator; Described DCK is the PUK that all FeatureIndicator are corresponding, deposits according to TLV form; Described DCKCounter is residue unblock number of attempt; Described UnblockControlKeys is the unblockcode after the encryption that each FeatureIndicator is corresponding; Described UnblockCKCounter is remaining unblockCK number of attempt; Described LockdownData: the order that mark is locked, once this order is locked, just cannot be performed.
202. if not, deletes described first SIM card encrypt file.
203. content informations that need lock based on terminal equipment adopt cryptographic algorithm to generate the second SIM card encrypt file.
Embodiments provide a kind of prosthetic device of SIM card encrypt file, be applied to terminal equipment, this device can realize the reparation to abnormal SIM encrypt file.Fig. 3 is the installation drawing one that the SIM card encrypt file of the embodiment of the present invention is repaired, and comprises judge module 31, removing module 33, generation module 34.Below structure is described in detail
Judge module 31, for judging whether the memory headroom of described first SIM card encrypt file equals standard value; Removing module 33, is connected to judge module 31, for deleting described first SIM card encrypt file when the memory headroom of described first SIM card encrypt file is not equal to standard value; Generation module 34, is connected to removing module 33, for after the described first SIM card encrypt file of deletion, generates described second SIM card encrypt file.
Fig. 4 is the prosthetic device two of SIM card encrypt file according to the preferred embodiment of the invention, compare installation drawing one also to comprise: detection module 32, be connected to judge module 31, for when the memory headroom of the first SIM card encrypt file equals standard value, whether the content information detecting the first SIM card encrypt file equals to encrypt pre-stored values.
Fig. 5 is the structure chart one of the prosthetic device of SIM card encrypt file according to the preferred embodiment of the invention, and as described in Figure 5, judge module 31 comprises: the first acquiring unit 311, for obtaining the memory headroom of the first SIM card encrypt file; Second acquisition unit 312, for obtaining standard value; Judging unit 313, is connected to the first acquiring unit 311 and second acquisition unit 312, for judging whether the memory headroom of described first SIM card encrypt file equals standard value.
Fig. 6 is the structure chart two of the prosthetic device of SIM card encrypt file according to the preferred embodiment of the invention, and as described in Figure 6, generation module 34 comprises: acquiring unit 341, for obtaining the content information that terminal equipment need lock; Generation unit 342, is connected to acquiring unit 341, generates the second SIM card encrypt file for adopting cryptographic algorithm.
Fig. 7 is the structure chart three of the prosthetic device of SIM card encrypt file according to the preferred embodiment of the invention, as described in Figure 7, described detection module 32 comprises: the first acquiring unit 321, for obtaining the content information of the first SIM card encrypt file; Second acquisition unit 322, for obtaining encryption pre-stored values; Contrast unit 323, is connected to acquiring unit 321 and second acquisition unit 322, for the first SIM card encrypt file content information obtained and described encryption pre-stored values being compared.
Optionally, detection and the prosthetic device of a kind of SIM card encrypt file of the embodiment of the present invention also comprise memory module, for store normal SIM card encrypt file memory headroom, generate encrypted content needed for encrypt file.
The embodiment of the present invention provides a kind of SIM card encrypt file, prosthetic device, by detecting the exception of SIM card encrypt file, generate new SIM card encrypt file, ensure that terminal equipment normally can read the content of encrypt file when opening initialization, thus realize the checking of SIM card validity, ensure that terminal equipment can normally use the business such as the call relevant to SIM card, online.
In several embodiments that the application provides, should be understood that disclosed terminal and method can realize by another way.Such as, device embodiment described above is only schematic, such as, the division of described unit, be only a kind of logic function to divide, actual can have other dividing mode when realizing, such as multiple unit or assembly can in conjunction with or another system can be integrated into, or some features can be ignored, or do not perform.Another point, shown or discussed coupling each other or direct-coupling or communication connection can be by some interfaces, and the indirect coupling of device or unit or communication connection can be electrical, machinery or other form.
The described unit illustrated as separating component or can may not be and physically separates, and the parts as unit display can be or may not be physical location, namely can be positioned at a place, or also can be distributed in multiple network element.Some or all of unit wherein can be selected according to the actual needs to realize the object of the present embodiment scheme.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, also can be that the independent physics of unit comprises, also can two or more unit in a unit integrated.Above-mentioned integrated unit both can adopt the form of hardware to realize, and the form that hardware also can be adopted to add SFU software functional unit realizes.
The above-mentioned integrated unit realized with the form of SFU software functional unit, can be stored in a computer read/write memory medium.Above-mentioned SFU software functional unit is stored in a storage medium, comprises the part steps of some instructions in order to make a computer equipment (can be personal computer, server, or the network equipment etc.) perform method described in each embodiment of the present invention.And aforesaid storage medium comprises: USB flash disk, portable hard drive, read-only memory (Read-OnlyMemory, be called for short ROM), random access memory (RandomAccessMemory, be called for short RAM), magnetic disc or CD etc. various can be program code stored medium.
Last it is noted that above embodiment is only in order to illustrate technical scheme of the present invention, be not intended to limit; Although with reference to previous embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (12)
1. a restorative procedure for SIM card encrypt file, is characterized in that, comprising:
Judge whether the memory headroom of the first SIM card encrypt file equals standard value, if not, delete described first SIM card encrypt file, described standard value is the memory headroom of normal SIM card encrypt file;
The content information that need lock based on terminal equipment adopts cryptographic algorithm to generate the second SIM card encrypt file.
2. method according to claim 1, it is characterized in that, described method also comprises:
When the memory headroom of described first SIM card encrypt file equals standard value, whether the content information of the described first SIM card encrypt file of further detection equals to encrypt pre-stored values, described encryption pre-stored values be the first time start of described terminal equipment when powering on for generate SIM card encrypt file parameter value, if not, then delete described first SIM card encrypt file.
3. method according to claim 1, is characterized in that, describedly judges whether the memory headroom of the first SIM card encrypt file equals standard value and comprise:
Read the encrypt file of described SIM card from described terminal equipment, obtain the memory headroom of described first SIM card encrypt file;
Read described standard value, judge whether the memory headroom of described first SIM card encrypt file equals standard value.
4. method according to claim 2, is characterized in that, whether the content information of described detection first SIM card encrypt file equals encryption pre-stored values comprises:
Read the encrypt file of described SIM card from described terminal equipment, obtain the content information of described first SIM card encrypt file;
Read described encryption pre-stored values, the first SIM card encrypt file content information of described acquisition and described encryption pre-stored values are compared;
If exist inconsistent, then judge that the content information of described first SIM card encrypt file is not equal to described encryption pre-stored values.
5. method according to claim 4, it is characterized in that the content information of described first SIM card encrypt file comprises in the information relevant to terminal equipment authority such as lock-in range, PUK, unblock number of times one or more.
6. method according to claim 1, is characterized in that, described first SIM card encrypt file is the current SIM card encrypt file of terminal equipment, is stored in described terminal equipment.
7. method according to claim 1, is characterized in that, the content information that described terminal equipment need lock comprise in the information relevant to terminal equipment authority such as lock-in range, PUK, unblock number of times one or more.
8. a prosthetic device for SIM card encrypt file, is characterized in that, comprising:
Judge module, for judging whether the memory headroom of described first SIM card encrypt file equals standard value;
Removing module, for deleting described first SIM card encrypt file;
Generation module, for generating described second SIM card encrypt file.
9. device according to claim 8, it is characterized in that, described device also comprises:
Detection module, for when the memory headroom of described first SIM card encrypt file equals standard value, whether the content information detecting described first SIM card encrypt file equals to encrypt pre-stored values.
10. device according to claim 8, it is characterized in that, described judge module comprises:
First acquiring unit, for obtaining the memory headroom of described first SIM card encrypt file;
Second acquisition unit, for obtaining described standard value;
Judging unit, for judging whether the memory headroom of described first SIM card encrypt file equals standard value.
11. devices according to claim 8, it is characterized in that, described generation module comprises:
Acquiring unit, for obtaining the content information that terminal equipment need lock;
Generation unit, the content information for locking based on the terminal equipment obtained adopts cryptographic algorithm to generate described second SIM card encrypt file.
12. devices according to claim 9, it is characterized in that, described detection module comprises:
Acquiring unit, for obtaining the content information of described first SIM card encrypt file;
Second acquisition unit, for obtaining encryption pre-stored values;
Contrast unit, for comparing the first SIM card encrypt file content information of described acquisition and described encryption pre-stored values.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510634700.0A CN105307161A (en) | 2015-09-30 | 2015-09-30 | Repair method and apparatus of SIM card encrypted files |
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| CN201510634700.0A CN105307161A (en) | 2015-09-30 | 2015-09-30 | Repair method and apparatus of SIM card encrypted files |
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| CN111225372A (en) * | 2018-11-23 | 2020-06-02 | 奇酷互联网络科技（深圳）有限公司 | Anti-off-network method, user equipment and device with storage function |
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Application publication date: 20160203 |