CN111367476B - Data reading method and device of SIM card - Google Patents
Data reading method and device of SIM card Download PDFInfo
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- CN111367476B CN111367476B CN202010165783.4A CN202010165783A CN111367476B CN 111367476 B CN111367476 B CN 111367476B CN 202010165783 A CN202010165783 A CN 202010165783A CN 111367476 B CN111367476 B CN 111367476B
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- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000007689 inspection Methods 0.000 claims description 18
- 238000004891 communication Methods 0.000 abstract description 8
- 238000010295 mobile communication Methods 0.000 description 2
- 241000030538 Thecla Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- CSRZQMIRAZTJOY-UHFFFAOYSA-N trimethylsilyl iodide Substances C[Si](C)(C)I CSRZQMIRAZTJOY-UHFFFAOYSA-N 0.000 description 1
Classifications
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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
-
- 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
-
- 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
-
- 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
-
- 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
-
- 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
Abstract
The invention relates to the technical field of communication and discloses a data reading method and device of a SIM card. The data reading method comprises the following steps: when receiving a file selection instruction, selecting a corresponding file in the SIM card; when a first reading record instruction aiming at a corresponding file is received, firstly carrying out security condition check, and reading and returning corresponding record data from the corresponding file after passing the security condition check; if the security condition check is passed, when other reading and recording instructions aiming at the corresponding file are received, the security condition check is not carried out, and corresponding recorded data is directly read from the corresponding file according to the current reading and recording instruction and returned. The embodiment of the invention only executes the security condition check when receiving the first reading and recording instruction of the current file, and does not execute the security condition check on the subsequent other reading and recording instructions of the current file, so that the reading time of each piece of recorded 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 method and an apparatus for reading data of a SIM card.
Background
The global system for mobile communications (Global System of Mobile communication, abbreviated as GSM) is the most widely used mobile telephone standard.
The user identity recognition module (Subscriber Identity Module, commonly called as SIM card) is also called as user identity recognition card, the SIM card is a communication module provided for a user by a communication network operator according to the request of the user, so that the user can realize network communication with the operator network by utilizing the data on the SIM card and the communication circuit, thereby realizing network communication service applications such as calling and surfing of the terminal. The type of SIM card provided by different network operators and the data and protocols within the SIM card are different.
The data of the SIM card mainly comprises the following types according to types:
SIM card holding data, which is written by the SIM card center before the mobile telephone is sold, includes an international mobile subscriber identity (International Mobile Subscriber Identification Number, IMSI for short), an authentication Key (KI), authentication and encryption algorithms, etc. The SIM card data of the part is important application data when the SIM card is started and added into an operator network;
SIM card dynamic data of the related network, such as Location Area Identification (LAI), mobile subscriber temporary identification (TMSI), public telephone network code forbidden to access, etc., wherein the SIM card data of the part is 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), unlocking code (PUK), charging rate, etc.;
the telephone directory is provided as a modifiable memory module to the user for storing telephone numbers entered by the user at any time.
In general, when a terminal is started or is switched from a flight mode to a normal mode, the terminal needs to access the SIM card, and after all files stored in the SIM card and related to network access are read, the terminal can access the network of an operator.
With the popularization of intelligent terminals, the hardware performance of the terminals is continuously improved, however, the data reading speed of the SIM card is not obviously improved, and the subsequent application of the read data is greatly influenced.
Disclosure of Invention
The invention aims to provide a data reading method and device for a SIM card, which overcome the problem of low data reading speed in the prior art.
To achieve the purpose, the invention adopts the following technical scheme:
a data reading method of a SIM card, comprising:
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 and recording instruction aiming at the corresponding file is received, firstly carrying out security condition inspection, and reading and returning corresponding recorded data from the corresponding file according to the first reading and recording instruction after the inspection passes;
if the security condition check is passed, when receiving other reading record instructions for the corresponding file, the security condition check is not performed, and corresponding record data is directly read from the corresponding file according to the current reading record instruction and returned.
Optionally, the data reading method further includes:
when the file selection instruction is received, setting a permission check mark as a first mark;
setting the authority check mark as a second mark when the security condition check passes;
when a reading record instruction is received, judging whether security condition check is needed currently according to the permission check mark: if the permission checking mark is a first mark, security condition checking is carried out; and if the permission checking mark is a second mark, not performing security condition checking.
Optionally, the security condition check 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 according to the authority configuration information, if so, judging that the current operation passes the security condition check, and if not, judging that the current operation does not pass the security condition check.
Optionally, the data reading method further includes: and accessing the whole read recorded data into the operator network by the application.
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 the file selection instruction when receiving the file selection instruction;
the safety inspection unit is used for carrying out safety condition inspection and feeding back inspection results when receiving the safety inspection instruction;
the record reading unit is used for firstly sending a security check instruction to the security check unit when receiving a first record reading instruction aiming at the corresponding file, and reading and returning corresponding record data from the corresponding file according to the first record reading instruction after the security check instruction passes the check; and the method is also used for directly reading and returning corresponding record data from the corresponding file according to the current read record instruction without carrying out security condition inspection when receiving other read record instructions for the corresponding file after the inspection is passed.
Optionally, the file selecting unit is further configured to set a permission checking flag to a first flag when the instruction for selecting a file is received;
the security check unit is further configured to set the authority check flag to a second flag when the security condition check passes;
the record reading unit is further configured to determine, according to the permission check flag, whether a security condition check is currently required when a record reading instruction is received: if the permission checking mark is a first mark, security condition checking is carried out; and if the permission checking mark is a second mark, not performing security condition checking.
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 according to the authority configuration information, if so, judging that the current operation passes the security condition check, and if not, judging that the current operation does not pass the security condition check.
Optionally, the data reading device further comprises a network access unit, configured to apply all the read record data to access the operator network.
A storage medium storing a plurality of instructions adapted to be loaded by a processor to perform the steps in the method of data reading of a SIM card as claimed in any one of the preceding claims.
Compared with the prior art, the embodiment of the invention has the following beneficial effects:
the embodiment of the invention only executes the security condition check when receiving the first reading and recording instruction of the current file, and does not execute the security condition check on the subsequent other reading and recording instructions of the current file, so that the reading time of each piece of recorded 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 invention or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the invention, and that other drawings can be obtained from these drawings without inventive faculty for a person skilled in the art.
Fig. 1 is a flowchart of a method for reading data from 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 comprehensible, the technical solutions in the embodiments of the present invention are described in detail below with reference to the accompanying drawings, and it is apparent that the embodiments described below are only some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
When the main-stream branded mobile phone on 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 interaction instruction between the mobile phone and the SIM card is monitored: the SIM card does not receive the authentication instruction issued by the mobile phone, so that the mobile phone cannot access the network of the operator; meanwhile, the mobile phone is found that the files on the SIM card are not completely read, wherein the mobile phone is obviously stopped when the phone book files on the SIM card are read less than half.
For this reason, the size of the file on the SIM card is adjusted, for example, 500 pieces of record data are preset before, and after 10 pieces of record data are preset, the mobile phone is started again, and then can be normally connected to the network of the operator. Therefore, in the process of reading the file by the mobile phone, the most influencing speed is the phone book file in the SIM card, which is because: for a phone book file containing 500 record items, the mobile phone at least needs to send 500 instructions to finish reading the whole phone book file, and the processing speed of each instruction can influence the data reading time of the whole file, so that the longer the consumed time is, the slower the speed of accessing into an operator network is, and the user experience is poor. Therefore, the invention aims to improve the data reading speed of the SIM card.
It should be noted that, communication between the mobile phone and the SIM card is mainly achieved by sending and receiving APDU (Application Protocol data unit, an information unit transmitted between the smart card and the smart card reader) commands.
The APDU instruction format is: the CLA+INS+P1+P2+P3+ (data), the specific format is related to INS, the invention mainly relates to the following 2 instructions:
1) 00A4XXXXXX: a file selection instruction which is responsible for selecting a certain file;
2) 00B2XXXXXX: the read record instruction, P1, is used to indicate which record in the current file to read. Taking the example of a file comprising 250 records, in 16, 0xFA, P1 will increment from 01 to FA to read all records.
The data reading process of the SIM card is summarized below by taking an example that each file includes 250 records:
00A4040410A0000000871002FF86FFFF89FFFFFFFF
00A40004025F3A
00A40004024F3A (first telephone book, 250 pieces in total)
00B201041C
The SIM card returns data of XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX00B 202041C
The SIM card returns data of XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
...
00B2FA041C
The SIM card returns data, XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX00A40004024F3B (second phone book, 250 pieces total)
00B201041C
The SIM card returns data of XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX00B 202041C
The SIM card returns data of XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
...
00B2FA041C
The SIM card returns data of XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
Therefore, the data reading process of the SIM card is mainly as follows: firstly, selecting a file to be read according to a file selection instruction; and sequentially reading corresponding record data from the file according to the sequentially received plurality of record reading instructions. In general, when a SIM card receives a read record command, a security condition check must be performed first, and after the check passes, the corresponding read record data can be returned, so that the read time of each record data takes 50ms, and a total of about 25 seconds is taken for reading 500 records.
Based on the above, the core idea of the invention is as follows:
when receiving a file selection instruction, selecting a corresponding file in the SIM card according to the file selection instruction;
when a first reading and recording instruction aiming at a corresponding file is received, firstly checking the security condition, and reading and returning corresponding recorded data from the corresponding file according to the first reading and recording instruction after the checking is passed;
if the security condition check is passed, when receiving other reading and recording instructions for the corresponding file, the security condition check is not performed, and corresponding recording data is directly read from the corresponding file according to the current reading and recording instruction and returned.
Unlike the security condition inspection for each reading and recording instruction, the security condition inspection is only executed when the first reading and recording instruction of the current file is received, and the security condition inspection is not executed for the subsequent other reading and recording instructions of the current file, so that the reading time of each piece of recording data at the back is reduced from 50ms to 8ms, and the total time of reading 500 records is about 4 seconds, and compared with the previous 25 seconds, the reading efficiency is improved to be about 85 percent, and the effect is very obvious.
Referring to fig. 1, an embodiment of the present invention provides a method for reading data from a SIM card, including the steps of:
and 101, selecting a corresponding file in the SIM card according to the file selection instruction when the file selection instruction is received, and setting the authority check mark as a first mark.
The permission checking mark is used as a judging basis for judging whether the subsequent security condition checking is performed or not. For convenience of operation, the value of the permission check flag may be set to a first flag indicating that security condition check is required or a second flag indicating that security condition check is not required, according to the need.
Specifically, the first mark may be false, and the second mark may be true, or of course, may be any other symbol or numerical value, so long as the two marks can be distinguished, which is not particularly limited.
Step 102, receiving a read record command.
Step 103, reading the permission check mark, if the permission check mark is the first mark, executing step 104, and if the permission check mark is the second mark, executing step 105.
Step 104, performing security condition check, and modifying the authority check mark to be a second mark after the check is passed.
In this step, the method for checking the security condition specifically includes: searching a corresponding authority configuration file of the corresponding file; reading authority configuration information in the authority configuration file; and judging whether the current operation has the read permission or not according to the permission configuration information, if so, judging that the current operation passes the security condition check, and if not, judging that the current operation does not pass the security condition check.
Taking the corresponding file 4F3A as an example, in the step of searching the corresponding authority configuration file, the method specifically includes: firstly, finding a parent directory 5F3A of a corresponding file 4F3A, searching whether an ARR file 6F06 exists below the parent directory 5F3A, and generally, the ARR file does not exist below the parent directory 5F 3A; if ARR file 6F06 is not found under parent directory 5F3A, then the search for ARR file 6F06 continues under parent directory 7FF0, which is the upper level where ARR files are typically present.
Step 105, according to the current reading record instruction, reading and returning corresponding record data from the corresponding file.
After reading the entire data, various applications may be performed on the data, such as accessing an operator network, without limitation.
In this embodiment, the permission check mark is used to identify whether to perform security condition check, and when one file is selected, the permission check mark is modified to be a first mark for identifying that security condition check needs to be performed, so that security condition check of each newly selected file is not affected; when the first reading and recording instruction is received, the permission checking mark is modified into a second mark for identifying that the security condition checking is not needed after the security checking is passed, so that the security condition checking step is omitted when other subsequently received reading and recording instructions are received, and the data reading speed is greatly improved on the basis of security 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 receiving the file selection instruction;
the safety inspection unit is used for carrying out safety condition inspection and feeding back inspection results when receiving the safety inspection instruction;
the record reading unit is used for firstly sending a security check instruction to the security check unit when receiving a first record reading instruction aiming at the corresponding file, and reading and returning corresponding record data from the corresponding file according to the first record reading instruction after the security check instruction passes the check; and after the checking is passed, when receiving other reading and recording instructions for the corresponding file, the method is not used for checking the security condition, and corresponding recorded data is directly read from the corresponding file according to the current reading and recording instruction and returned.
The file selection unit is further used for setting the authority check mark as a first mark when receiving a file selection instruction; the security check unit is also used for setting the authority check mark as a second mark when the security condition check passes; the record reading unit is further used for judging whether security condition check is needed currently according to the permission check mark when a record reading instruction is received: if the authority check mark is the first mark, the security condition check is performed, and if the authority check mark is the second mark, the security condition check is not performed.
In addition, the data reading device of the 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 appreciated by those of ordinary skill in the art that all or part of the steps of the data reading method described above may be performed by instructions or by controlling associated hardware by instructions, which may be stored on a computer readable storage medium and loaded and executed by a processor.
To this end, the embodiments of the present application further provide a storage medium having stored therein a plurality of instructions capable of being loaded by a processor to perform 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, random Access Memory), magnetic or optical disk, and the like.
The above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the 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 scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (9)
1. A data reading method of a SIM card, wherein the data reading method includes: when a file selection instruction is received, selecting a corresponding file in the SIM card according to the file selection instruction, and setting a permission checking mark of the corresponding file as a first mark;
when a first reading and recording instruction aiming at the corresponding file is received, firstly carrying out security condition inspection, setting the authority inspection mark as a second mark after the inspection is passed, and then reading and returning corresponding recorded data from the corresponding file according to the first reading and recording instruction;
if the security condition check is passed, when receiving other reading record instructions for the corresponding file, the security condition check is not performed, and corresponding record data is directly read from the corresponding file according to the current reading record instruction and returned.
2. The method for reading data of a SIM card according to claim 1, wherein the security condition check 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 according to the authority configuration information, if so, judging that the current operation passes the security condition check, and if not, judging that the current operation does not pass the security condition check.
3. The method for reading data from a SIM card according to claim 1, further comprising: and accessing the whole read recorded data into the operator network by the application.
4. A method for reading data from a SIM card according to any one of claims 1 to 3, further comprising reading data from a phone book file in the SIM card.
5. A data reading device for a SIM card, the data reading device comprising:
the file selection unit is used for selecting a corresponding file from the SIM card according to the file selection instruction when receiving the file selection instruction, and setting the authority check mark as a first mark;
the security checking unit is used for performing security condition checking and feeding back a checking result when receiving a security checking instruction, and setting the authority checking mark as a second mark when the security condition checking passes;
the record reading unit is used for firstly sending a security check instruction to the security check unit when receiving a first record reading instruction aiming at the corresponding file, and reading and returning corresponding record data from the corresponding file according to the first record reading instruction after the security check instruction passes the check; and the security condition checking module is also used for directly reading and returning corresponding record data from the corresponding file according to the current reading and recording instruction when receiving other reading and recording instructions aiming at the corresponding file after the checking is passed, and judging whether the security condition checking is needed currently according to the authority checking mark when receiving one reading and recording instruction each time: if the permission checking mark is a first mark, security condition checking is carried out; and if the permission checking mark is a second mark, not performing security condition checking.
6. The SIM card data reading device according to 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 according to the authority configuration information, if so, judging that the current operation passes the security condition check, and if not, judging that the current operation does not pass the security condition check.
7. The data reading device of a SIM card according to claim 5, further comprising a network access unit for accessing the operator network using all the read recorded data.
8. A data reading device for a SIM card according to any one of claims 5 to 7, wherein the data reading device for a SIM card is a data reading device for a SIM card phone book.
9. A storage medium storing a plurality of instructions adapted to be loaded by a processor to perform the steps of the method of reading data of a SIM card as claimed in any one of claims 1 to 4.
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| JP2015222484A (en) * | 2014-05-22 | 2015-12-10 | 凸版印刷株式会社 | Data output method, data reading method, storage medium device and data reading device |
| CN104050424A (en) * | 2014-06-26 | 2014-09-17 | 大唐微电子技术有限公司 | Method for achieving file access security authority management through smart card and file access method |
| CN106845216A (en) * | 2016-12-30 | 2017-06-13 | 北京瑞星信息技术股份有限公司 | Checking and killing method and device based on virtualized environment |
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