CN111367476A - Data reading method and device for SIM card - Google Patents
Data reading method and device for SIM card Download PDFInfo
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- CN111367476A CN111367476A CN202010165783.4A CN202010165783A CN111367476A CN 111367476 A CN111367476 A CN 111367476A CN 202010165783 A CN202010165783 A CN 202010165783A CN 111367476 A CN111367476 A CN 111367476A
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- 238000007689 inspection Methods 0.000 claims description 12
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0602—Interfaces specially adapted for storage systems specifically adapted to achieve a particular effect
- G06F3/061—Improving I/O performance
- G06F3/0611—Improving I/O performance in relation to response time
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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
- G06F21/60—Protecting data
- G06F21/604—Tools and structures for managing or administering access control systems
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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
- G06F21/60—Protecting data
- G06F21/62—Protecting access to data via a platform, e.g. using keys or access control rules
- G06F21/6209—Protecting access to data via a platform, e.g. using keys or access control rules to a single file or object, e.g. in a secure envelope, encrypted and accessed using a key, or with access control rules appended to the object itself
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0602—Interfaces specially adapted for storage systems specifically adapted to achieve a particular effect
- G06F3/062—Securing storage systems
- G06F3/0622—Securing storage systems in relation to access
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0628—Interfaces specially adapted for storage systems making use of a particular technique
- G06F3/0629—Configuration or reconfiguration of storage systems
- G06F3/0637—Permissions
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0628—Interfaces specially adapted for storage systems making use of a particular technique
- G06F3/0638—Organizing or formatting or addressing of data
- G06F3/0643—Management of files
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2221/00—Indexing scheme relating to security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F2221/21—Indexing scheme relating to G06F21/00 and subgroups addressing additional information or applications relating to security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F2221/2141—Access rights, e.g. capability lists, access control lists, access tables, access matrices
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Abstract
The invention relates to the technical field of communication, and discloses a data reading method and device for an SIM card. The data reading method comprises the following steps: when a file selection instruction is received, selecting a corresponding file in the SIM card; when a first reading recording instruction aiming at a corresponding file is received, firstly, safety condition check is carried out, and after the first reading recording instruction passes the safety condition check, corresponding recording data are read from the corresponding file and returned; if the safety condition check is passed, when other reading record instructions aiming at the corresponding file are received, the safety condition check is not carried out, and corresponding record data are directly read from the corresponding file and returned according to the current reading record instruction. According to the embodiment of the invention, the safety condition check is executed only when the first reading recording instruction of the current file is received, and the safety condition check is not executed for other subsequent reading recording instructions of the current file, so that the reading time of each piece of subsequent recording data is greatly shortened, and the data reading efficiency of the whole file is effectively improved.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a data reading method and apparatus for an SIM card.
Background
Global System of Mobile communication (GSM) is the most widely used standard for Mobile phones.
A Subscriber Identity Module (commonly called SIM card) is also called a Subscriber Identity Module card, and the SIM card is a communication Module provided by a communication network operator to a Subscriber according to a request of the Subscriber, so that the Subscriber can use data and a communication circuit on the SIM card to realize network communication with an operator network, thereby realizing network communication service applications such as making a call and surfing the internet of a terminal. The types of SIM cards and the data and protocols within the SIM cards provided by different network operators vary.
The data of the SIM card mainly comprises the following data according to types:
the SIM card holds data, which is written by the SIM card center before the Mobile phone is sold, including an International Mobile Subscriber identity Number (IMSI), an authentication Key (KI), an authentication and encryption algorithm, etc. The SIM card data of the part are important application data when the SIM card is started and the SIM card is added into an operator network;
the SIM card dynamic data related to the network, such as Location Area Identity (LAI), Temporary Mobile Subscriber Identity (TMSI), public telephone network code which is forbidden to access, etc., and the SIM card data of this part is the dynamic application data of the SIM card when the operator network updates the location information;
SIM card related service codes such as Personal Identification Number (PIN), unlock code (PUK), billing rate, etc.;
the telephone directory is used as a changeable storage module to be provided for the user so as to store the telephone number input by the user at any time.
Generally, when the terminal is powered on or switched from the airplane mode to the normal mode, the terminal needs to access the SIM card, and can access the operator network after reading all files stored in the SIM card and related to network access.
With the popularization of intelligent terminals, the hardware performance of the terminal is continuously improved, but the data reading speed of the SIM card is not obviously improved, so that the subsequent application of reading data is greatly influenced.
Disclosure of Invention
The invention aims to provide a data reading method and a data reading device for an SIM card, which solve the problem of low data reading speed in the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme:
a data reading method of a SIM card comprises the following steps:
when a file selection instruction is received, selecting a corresponding file in an SIM card according to the file selection instruction;
when a first reading recording instruction aiming at the corresponding file is received, firstly, safety condition check is carried out, after the check is passed, corresponding recording data are read from the corresponding file and returned according to the first reading recording instruction;
and if the safety condition check is passed, when other reading record instructions aiming at the corresponding file are received, the safety condition check is not carried out, and corresponding record data are directly read from the corresponding file and returned according to the current reading record instruction.
Optionally, the data reading method further includes:
when the file selection instruction is received, setting an authority check mark as a first mark;
when the security condition check is passed, setting the permission check mark as a second mark;
when a record reading instruction is received, judging whether security condition check is needed at present according to the permission check mark: if the permission check mark is a first mark, carrying out safety condition check; and if the permission check mark is a second mark, not checking the safety condition.
Optionally, the safety condition checking includes:
searching a corresponding authority configuration file of the corresponding file;
reading the authority configuration information in the authority configuration file;
and judging whether the current operation has the reading authority or not according to the authority configuration information, if so, judging that the current operation passes the safety condition check, and otherwise, judging that the current operation does not pass the safety condition check.
Optionally, the data reading method further includes: and accessing the operator network by using all the read record data.
A data reading apparatus of a SIM card, comprising:
the file selection unit is used for selecting a corresponding file from the SIM card according to a file selection instruction when the file selection instruction is received;
the safety inspection unit is used for carrying out safety condition inspection and feeding back an inspection result when receiving the safety inspection instruction;
the record reading unit is used for sending a security check instruction to the security check unit when receiving a first record reading instruction aiming at the corresponding file, reading from the corresponding file according to the first record reading instruction after the security check is passed, and returning corresponding record data; and the device is also used for directly reading and returning corresponding record data from the corresponding file according to the current reading record instruction without performing safety condition check when other reading record instructions aiming at the corresponding file are received after the check is passed.
Optionally, the file selecting unit is further configured to set an authority check flag as a first flag when the file selecting instruction is received;
the security check unit is further configured to set the permission check flag to be a second flag when the security condition check passes;
the record reading unit is further configured to, when receiving each record reading instruction, determine whether security condition checking is required according to the permission checking flag: if the permission check mark is a first mark, carrying out safety condition check; and if the permission check mark is a second mark, not checking the safety condition.
Optionally, the security check unit is specifically configured to: searching a corresponding authority configuration file of the corresponding file; reading the authority configuration information in the authority configuration file; and judging whether the current operation has the reading authority or not according to the authority configuration information, if so, judging that the current operation passes the safety condition check, and otherwise, judging that the current operation does not pass the safety condition check.
Optionally, the data reading apparatus further includes a network access unit, configured to access an operator network by using all the read record data.
A storage medium storing a plurality of instructions adapted to be loaded by a processor to perform the steps of the data reading method of the SIM card according to any one of the above claims.
Compared with the prior art, the embodiment of the invention has the following beneficial effects:
according to the embodiment of the invention, the safety condition check is executed only when the first reading recording instruction of the current file is received, and the safety condition check is not executed for other subsequent reading recording instructions of the current file, so that the reading time of each piece of subsequent recording data is greatly shortened, and the data reading efficiency of the whole file is effectively improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a flowchart of a data reading method of a SIM card according to an embodiment of the present invention.
Detailed Description
In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the embodiments described below are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
When a mainstream brand mobile phone in the market is used for testing the compatibility of the SIM card, the phenomenon that an individual mobile phone cannot access an operator network is found, and the following is found by monitoring an interactive instruction between the mobile phone and the SIM card: the SIM card does not receive an authentication command issued by the mobile phone, so that the mobile phone cannot access to an operator network; meanwhile, it is also found that the mobile phone does not completely read the files on the SIM card, wherein it is obvious that the phone book files on the SIM card are stopped when less than half of the files are read.
Therefore, the file on the SIM card is attempted to be resized, for example, after the previous preset 500 pieces of record data are changed to the preset 10 pieces of record data, the mobile phone is attempted to be powered on again, and then the mobile phone can normally access to the operator network. Therefore, in the process of reading the file by the mobile phone, the most influencing speed is the phone file in the SIM card, which is due to: for a phone book file containing 500 entries, when a mobile phone reads the whole phone book file, at least 500 instructions need to be sent to finish reading, and the processing speed of each instruction influences the data reading time of the whole file, so that the longer the time is consumed, the slower the speed of accessing to an operator network is, and the poorer the user experience is caused. Therefore, the invention aims to improve the data reading speed of the SIM card.
It should be noted that the communication between the mobile phone and the SIM card is mainly realized by sending and receiving an APDU (application protocol data unit, which is an information unit transmitted between the smart card and the smart card reader) command.
The format of the APDU command is: CLA + INS + P1+ P2+ P3+ (data), the specific format is related to INS, the invention mainly relates to the following 2 instructions:
1)00A4 XXXXXXX: a file selecting instruction is responsible for selecting a certain file;
2)00B2 XXXXX: the read record command, P1, is used to indicate which record in the current file is read. Taking the example of a file comprising 250 records, the 16-ary representation is 0xFA, so P1 would read all records from 01- - -FA incrementing all the time.
The data reading process of the SIM card is outlined below, taking as an example that each file comprises 250 records:
00A4040410A0000000871002FF86FFFF89FFFFFFFF
00A40004025F3A
00A40004024F3A (first phone this file, 250 pieces total)
00B201041C
SIM card return data XXXXXXXXXXXXXXXXXXXXXXXXXXXX00B202041C
SIM card return data XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
...
00B2FA041C
SIM card Return data XXXXXXXXXXXXXXXXXXXXXXXXXXXXXX00A40004024F3B (second phone this document, total 250 strips)
00B201041C
SIM card return data XXXXXXXXXXXXXXXXXXXXXXXXXXXX00B202041C
SIM card return data XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
...
00B2FA041C
SIM card return data XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
Therefore, the data reading process of the SIM card mainly includes: selecting a file to be read according to a file selection instruction; and sequentially reading corresponding recording data from the file according to the sequentially received multiple reading recording instructions. Generally, when each SIM card receives a record reading command, security condition check must be performed first, and the read corresponding record data can be returned after the check is passed, so that the reading time of each record data takes 50ms, and for example, it takes about 25 seconds in total to read 500 records.
Based on this, the core idea of the invention is as follows:
when a file selection instruction is received, selecting a corresponding file in the SIM card according to the file selection instruction;
when a first reading recording instruction aiming at a corresponding file is received, firstly, safety condition check is carried out, after the check is passed, corresponding recording data are read from the corresponding file according to the first reading recording instruction and returned;
and if the safety condition check is passed, when other reading record instructions aiming at the corresponding file are received, the safety condition check is not carried out, and corresponding record data are directly read from the corresponding file and returned according to the current reading record instruction.
Different from the security condition check performed on each reading record instruction, the security condition check is performed only when the first reading record instruction of the current file is received, and the security condition check is not performed on other subsequent reading record instructions of the current file, so that the reading time of each piece of subsequent record data is reduced from 50ms to 8ms, taking 500 pieces of records as an example, about 4 seconds in total, compared with the previous 25 seconds, the reading efficiency is improved by 85% approximately, and the effect is very obvious.
Referring to fig. 1, an embodiment of the present invention provides a data reading method for a SIM card, including:
The permission check mark is used as a judgment basis for subsequently checking whether the safety condition is checked. For convenience of operation, the value of the permission check flag may be set to a first flag indicating that the security condition check is required or a second flag indicating that the security condition check is not required, as required.
Specifically, the first mark may be false, the second mark may be true, and of course, the first mark may also be other symbols or values as long as the two can be distinguished, and the specific is not limited.
And 104, carrying out safety condition check, and modifying the permission check mark into a second mark after the check is passed.
In this step, the method for checking the safety condition specifically includes: searching a corresponding authority configuration file of the corresponding file; reading the authority configuration information in the authority configuration file; and judging whether the current operation has the reading authority or not according to the authority configuration information, if so, judging that the current operation passes the safety condition check, and otherwise, judging that the current operation does not pass the safety condition check.
Taking the corresponding file 4F3A as an example, in the step of searching for the right configuration file corresponding to the corresponding file, the method specifically includes: firstly, finding a parent directory 5F3A corresponding to the file 4F3A, and searching whether an ARR file 6F06 exists below the parent directory 5F3A, wherein the ARR file does not exist under the parent directory 5F3A generally; if an ARR file 6F06 is not found below the parent directory 5F3A, then the search continues for an ARR file 6F06 below the upper level parent directory 7FF0 where an ARR file typically exists.
And 105, reading and returning corresponding recording data from the corresponding file according to the current reading recording instruction.
After reading all the data, various applications can be performed on the data, such as accessing to an operator network, without limitation.
In the embodiment, whether security condition check is performed or not is identified by using the permission check mark, and when one file is selected, the permission check mark is modified into a first mark for identifying the need of security condition check, so that the security condition check of each newly selected file can be ensured not to be influenced; when a first reading recording instruction is received, the permission check mark is modified into a second mark which does not need to be checked for safety conditions after passing safety check, so that the safety condition check step can be omitted during subsequent received other reading recording instructions, and the data reading speed is greatly improved on the basis of safety guarantee.
The embodiment of the invention also provides a data reading device of the SIM card, which comprises:
the file selection unit is used for selecting a corresponding file from the SIM card according to the file selection instruction when the file selection instruction is received;
the safety inspection unit is used for carrying out safety condition inspection and feeding back an inspection result when receiving the safety inspection instruction;
the record reading unit is used for sending a security check instruction to the security check unit when receiving a first record reading instruction aiming at the corresponding file, reading the corresponding record data from the corresponding file according to the first record reading instruction after the security check is passed, and returning the corresponding record data; and the device is also used for directly reading and returning corresponding record data from the corresponding file according to the current reading record instruction without performing safety condition check when other reading record instructions aiming at the corresponding file are received after the check is passed.
The file selection unit is also used for setting the permission check mark as a first mark when receiving a file selection instruction; the safety check unit is also used for setting the authority check mark as a second mark when the safety condition check is passed; the record reading unit is further configured to determine whether security condition checking is required at present according to the permission checking flag when each record reading instruction is received: and if the permission check mark is a first mark, performing security condition check, and if the permission check mark is a second mark, not performing security condition check.
In addition, the data reading apparatus of this embodiment further includes a network access unit, configured to apply all the read record data, so that the SIM card joins the operator network.
It will be understood by those skilled in the art that all or part of the steps in the data reading method can be performed by instructions or related hardware controlled by the instructions, and the instructions can be stored in a computer readable storage medium and loaded and executed by a processor.
To this end, embodiments of the present application further provide a storage medium, where a plurality of instructions are stored, where the instructions can be loaded by a processor to execute the steps in the low power consumption control method provided in the embodiments of the present application.
Wherein the storage medium may include: read Only Memory (ROM), Random Access Memory (RAM), magnetic or optical disks, and the like.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (9)
1. A data reading method of a SIM card is characterized by comprising the following steps:
when a file selection instruction is received, selecting a corresponding file in an SIM card according to the file selection instruction;
when a first reading recording instruction aiming at the corresponding file is received, firstly, safety condition check is carried out, after the check is passed, corresponding recording data are read from the corresponding file and returned according to the first reading recording instruction;
and if the safety condition check is passed, when other reading record instructions aiming at the corresponding file are received, the safety condition check is not carried out, and corresponding record data are directly read from the corresponding file and returned according to the current reading record instruction.
2. The SIM card data reading method according to claim 1, further comprising:
when the file selection instruction is received, setting an authority check mark as a first mark;
when the security condition check is passed, setting the permission check mark as a second mark;
when a record reading instruction is received, judging whether security condition check is needed at present according to the permission check mark: if the permission check mark is a first mark, carrying out safety condition check; and if the permission check mark is a second mark, not checking the safety condition.
3. The SIM card data reading method according to claim 1, wherein the security condition check comprises:
searching a corresponding authority configuration file of the corresponding file;
reading the authority configuration information in the authority configuration file;
and judging whether the current operation has the reading authority or not according to the authority configuration information, if so, judging that the current operation passes the safety condition check, and otherwise, judging that the current operation does not pass the safety condition check.
4. The SIM card data reading method according to claim 1, further comprising: and accessing the operator network by using all the read record data.
5. A data reading apparatus of a SIM card, the data reading apparatus comprising:
the file selection unit is used for selecting a corresponding file from the SIM card according to a file selection instruction when the file selection instruction is received;
the safety inspection unit is used for carrying out safety condition inspection and feeding back an inspection result when receiving the safety inspection instruction;
the record reading unit is used for sending a security check instruction to the security check unit when receiving a first record reading instruction aiming at the corresponding file, reading from the corresponding file according to the first record reading instruction after the security check is passed, and returning corresponding record data; and the device is also used for directly reading and returning corresponding record data from the corresponding file according to the current reading record instruction without performing safety condition check when other reading record instructions aiming at the corresponding file are received after the check is passed.
6. The SIM card data reading apparatus of claim 5,
the file selection unit is further used for setting an authority check mark as a first mark when the file selection instruction is received;
the security check unit is further configured to set the permission check flag to be a second flag when the security condition check passes;
the record reading unit is further configured to, when receiving each record reading instruction, determine whether security condition checking is required according to the permission checking flag: if the permission check mark is a first mark, carrying out safety condition check; and if the permission check mark is a second mark, not checking the safety condition.
7. The SIM card data reading apparatus of claim 5, wherein the security check unit is specifically configured to: searching a corresponding authority configuration file of the corresponding file; reading the authority configuration information in the authority configuration file; and judging whether the current operation has the reading authority or not according to the authority configuration information, if so, judging that the current operation passes the safety condition check, and otherwise, judging that the current operation does not pass the safety condition check.
8. A data reading apparatus for a SIM card according to claim 5, wherein the data reading apparatus further comprises a network access unit for accessing the operator network by applying all the read record data.
9. A storage medium storing a plurality of instructions, the instructions being adapted to be loaded by a processor to perform the steps of the data reading method of the SIM card according to any one of claims 1 to 5.
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| CN114756443A (en) * | 2021-01-08 | 2022-07-15 | 星汉智能科技股份有限公司 | Method for testing remote file operation of USIM card |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114756443A (en) * | 2021-01-08 | 2022-07-15 | 星汉智能科技股份有限公司 | Method for testing remote file operation of USIM card |
| CN114756443B (en) * | 2021-01-08 | 2023-04-14 | 星汉智能科技股份有限公司 | Method for testing remote file operation of USIM card |
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