CN103294569B - The COS edition correcting methods and calibration equipment of smart card - Google Patents
The COS edition correcting methods and calibration equipment of smart card Download PDFInfo
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Abstract
The present invention provides a kind of the COS edition correcting methods and calibration equipment of smart card, and the COS edition correcting methods of the smart card include step：The COS data of smart card are divided at least two data blocks；Using built in smart card checking algorithm and preset initial value determine the check code of each data block；And the check code of the COS data according to the check code and smart card of data block, the COS versions of smart card are verified.The present invention also provides a kind of COS version check devices of smart card.The COS edition correcting methods and calibration equipment of the smart card of the present invention by the COS data of smart card by being divided into multiple data blocks, by the comparison of the check code of check code and COS data to multiple data blocks, realization effectively verifies the COS versions of smart card.
Description
Technical field
The present invention relates to versions to verify field, more specifically to a kind of COS edition correcting methods of smart card and school
Experiment device.
Background technology
With the development of science and technology, more and more people carry out small amount payment, such as mass transit card, purchase card etc. using smart card.
Smart card is called CPU card, central processing unit, programmable read only memory, random access memory and solidification is integrated in smart card
COS (Chip Operating System, card internal operating system or smart card system) in read-only memory.The COS has
Following functions：Transfer management, file management, security system and command interpretation etc..
Data in smart card are divided into external reading part and inter-process part, in order to ensure the data in smart card
Securely and reliably, the COS data of smart card are arranged to the data of inter-process part, and normal condition lower outer portion is can not to read
The data of this part.
In order to ensure that the consistency of smart card COS versions, the verifying function that smart card can provide COS versions are (general to use
CRC code (cyclic redundancy check code, Cyclic Redundancy Check) is verified), but the checking algorithm be also can not
Read, cause in this way as someone by and meanwhile distort the checking algorithm of COS data and COS versions so that ultimately generate
COS versions CRC code it is identical with CRC code when not distorting, such user can not just find the COS data of smart card by
People distorts.
Therefore, it is necessary to a kind of the COS edition correcting methods and calibration equipment of smart card are provided, deposited with solving the prior art
The problem of.
Invention content
The embodiment of the present invention is designed to provide a kind of COS edition correcting methods of smart card, to solve existing intelligence
The technical issues of COS edition correcting methods that can block cannot effectively verify the COS data of smart card.
The embodiment of the present invention is designed to provide a kind of COS version check devices of smart card, to solve existing intelligence
The technical issues of COS version check devices that can block cannot effectively verify the COS data of smart card.
To solve the above problems, technical solution provided by the invention is as follows：
There is provided a kind of COS edition correcting methods of smart card comprising step：
The COS data of smart card are divided at least two data blocks；
Use the check code of checking algorithm and each data block of preset initial value determination built in the smart card；
And
According to the check code of the COS data of the check code of the data block and the smart card, to the smart card
COS versions are verified.
In the COS edition correcting methods of smart card of the present invention, the verification built in using the smart card
Algorithm and preset initial value determine that the step of check code of each data block includes：
Using built in the smart card checking algorithm and preset initial value determine the check code of first data block；With
And
Next data block is determined using the check code of checking algorithm and the data block built in the smart card
Check code, until determining the check code of the last one data block；
The check code of the COS data of the check code and smart card according to the data block, to the intelligence
The step of COS versions of card are verified be specially：
According to the check code of the COS data of the check code of the last one data block and the smart card, to described
The COS versions of smart card are verified.
In the COS edition correcting methods of smart card of the present invention, the checking algorithm built in the smart card is used
And the preset initial value determines the check code of the COS data of the smart card.
In the COS edition correcting methods of smart card of the present invention, the last one data block described in the basis
The check code of the COS data of check code and the smart card, the step of being verified to the COS versions of the smart card, are specific
For：
Check code such as the last one data block is identical as the check code of COS data of the smart card, it is determined that
The COS versions of the smart card are normal；
Check code such as the last one data block is different from the check code of COS data of the smart card, it is determined that
The COS versions of the smart card are abnormal.
In the COS edition correcting methods of smart card of the present invention, it is described by the COS data of smart card be divided into
The step of two data blocks are specially less：
According to the application in the smart card, the COS data of smart card are divided at least two data blocks.
A kind of COS version check devices of smart card are also provided comprising：
Division module, for the COS data of smart card to be divided at least two data blocks；
Data block check code determining module, the checking algorithm and preset initial value for being used to use built in the smart card are true
The check code of fixed each data block；And
System data correction verification module is used for the COS data of the check code and smart card according to the data block
Check code verifies the COS versions of the smart card.
In the COS version check devices of smart card of the present invention, the Data block check code determining module includes：
First Data block check code determination unit, for using the checking algorithm built in the smart card and presetting initial
Value determines the check code of first data block；And
Second Data block check code determination unit, for using checking algorithm and the data built in the smart card
The check code of block determines the check code of next data block, until determining the check code of the last one data block；
The system data correction verification module includes：
Verification unit, the COS data of the check code and smart card for the last one data block according to
Check code verifies the COS versions of the smart card.
In smart card system version check device of the present invention, the system data correction verification module uses the intelligence
Checking algorithm and the preset initial value built in capable of blocking determine the check code of the COS data of the smart card.
In smart card system version check device of the present invention, the verification unit is specifically used for：
Check code such as the last one data block is identical as the check code of COS data of the smart card, it is determined that
The COS versions of the smart card are normal；
Check code such as the last one data block is different from the check code of COS data of the smart card, it is determined that
The COS versions of the smart card are abnormal.
In smart card system version check device of the present invention, the division module is specifically used for：
According to the application in the smart card, the COS data of smart card are divided at least two data blocks.
The COS edition correcting methods and calibration equipment of smart card compared to the prior art, the COS of smart card of the invention
Edition correcting method and calibration equipment by the COS data of smart card by being divided into multiple data blocks, by multiple data blocks
Check code and COS data check code comparison, realization the COS versions of smart card are effectively verified.It solves
The technical issues of COS version check devices of existing smart card cannot effectively verify the COS data of smart card.
Description of the drawings
Present invention will be further explained below with reference to the attached drawings and examples, in attached drawing：
Fig. 1 is the flow chart of the first preferred embodiment of the COS edition correcting methods of the smart card of the present invention；
Fig. 2 is the flow chart of the second preferred embodiment of the COS edition correcting methods of the smart card of the present invention；
Fig. 3 is the structural schematic diagram of the first preferred embodiment of the COS version check devices of the smart card of the present invention；
Fig. 4 is the structural schematic diagram of the second preferred embodiment of the COS version check devices of the smart card of the present invention.
Specific implementation mode
With reference to diagram, the preferred embodiment of the present invention is described in detail.
Fig. 1 is please referred to, Fig. 1 is the flow of the first preferred embodiment of the COS edition correcting methods of the smart card of the present invention
Figure.The COS edition correcting methods of the smart card of this preferred embodiment include：
The COS data of smart card are divided at least two data blocks by step S101；
Step S102, using built in smart card checking algorithm and preset initial value determine the verification of each data block
Code；
Step S103, according to the check code of the COS data of the check code of data block and smart card, to the COS of smart card
Version is verified；
The COS edition correcting methods of the smart card of this preferred embodiment end at step S103.
The following detailed description of the detailed process of each step of the COS edition correcting methods of the smart card of this preferred embodiment.
In step S101, the COS data of smart card are divided at least two data blocks, so as to subsequently to each data
Block carries out the calculating of check code respectively.The quantity and position that data block divides can determine as needed.Here preferably according to intelligence
Application in card divides the COS data of smart card, i.e., it is each divide after data block include at least one completely answering
With.Since whether the application that application service provider is generally only concerned its exploitation is tampered, COS data are drawn by application
Point, facilitate the application that application service provider develops it individually to verify.
Then execute step S102.
In step s 102, using built in smart card checking algorithm and preset initial value determine in step S101 and generate
Each data block check code, the built-in checking algorithm of smart card can not be directly read by verifying personnel here, can only use intelligence
The built-in checking algorithm and preset initial value that can block carry out the calculating of check code, such as COS data and the built-in school of smart card
Checking method is tampered, although the check code of the COS data of smart card does not change, the check code of data block can become
Change, so as to make whether the COS data of smart card that user knows that it is used are tampered.
Then execute step S103.
In step s 103, entire smart card is directly settled accounts using the built-in checking algorithm and preset initial value of smart card
COS data check code, each data that then will be determined in the check code of the COS data of entire smart card and step S102
The check code of block is compared, and the verification of the COS versions of smart card is completed.
The checking procedure of the COS versions of entire smart card is completed in this way.
The COS edition correcting methods of the smart card of this preferred embodiment are multiple by being divided into the COS data of smart card
Data block realizes the COS versions to smart card by the comparison of the check code of check code and COS data to multiple data blocks
This progress effectively verifies.
Fig. 2 is please referred to, Fig. 2 is the flow of the second preferred embodiment of the COS edition correcting methods of the smart card of the present invention
Figure.The COS edition correcting methods of the smart card of this preferred embodiment include：
The COS data of smart card are divided at least two data blocks by step S201；
Step S202, using built in smart card checking algorithm and preset initial value determine the verification of first data block
Code；
Step S203 determines next data block using the check code of checking algorithm and data block built in smart card
Check code, until determining the check code of the last one data block；
Step S204, according to the check code of the COS data of the check code of the last one data block and smart card, to intelligence
The COS versions of card are verified；
The COS edition correcting methods of the smart card of this preferred embodiment end at step S204.
The following detailed description of the detailed process of each step of the COS edition correcting methods of the smart card of this preferred embodiment.
In step s 201, the COS data of smart card are divided at least two data blocks, so as to subsequently to each data
Block carries out the calculating of check code respectively.The quantity and position that data block divides can determine as needed.Here preferably according to intelligence
Application in card divides the COS data of smart card, i.e., it is each divide after data block include at least one completely answering
With.Since whether the application that application service provider is generally only concerned its exploitation is tampered, COS data are drawn by application
Point, facilitate the application that application service provider develops it individually to verify.
Then execute step S202.
In step S202, using built in smart card checking algorithm and preset initial value determine in step S201 and generate
First data block check code, the built-in checking algorithm of smart card can not be directly read by verifying personnel here, can only be used
The built-in checking algorithm and preset initial value of smart card carry out the calculating of check code.
Then execute step S203.
In step S203, next data are determined using the check code of checking algorithm and data block built in smart card
The check code of block, specially using the check code for first data block calculated in step S202 as second data block
Then initial value determines second data block using the initial value of checking algorithm and second data block built in smart card
Check code；Then using the check code of second data block as the initial value of third data block, reuse built in smart card
Checking algorithm and the initial value of third data block determine the check code of third data block；The rest may be inferred, determines last
The check code of a data block.
Then execute step S204.
In step S204, entire smart card is directly settled accounts using the built-in checking algorithm and preset initial value of smart card
COS data check code, then by determined in the check code of the COS data of entire smart card and step S203 the last one
The check code of data block is compared, and the check code such as the last one data block is identical as the check code of COS data of smart card,
Then determine that the COS versions of smart card are normal；As the check code and smart card of the last one data block COS data check code not
Together, it is determined that the COS versions of smart card are abnormal.
The checking procedure of the COS versions of entire smart card is completed in this way.
The COS edition correcting methods of the smart card of this preferred embodiment are multiple by being divided into the COS data of smart card
Data block, and be compared with the check code of COS data by the final check code of multiple data blocks, it realizes to smart card
COS versions are effectively verified.
The present invention also provides a kind of COS version check devices of smart card.Fig. 3 is please referred to, Fig. 3 is the smart card of the present invention
COS version check devices first preferred embodiment structural schematic diagram.The COS versions school of the smart card of this preferred embodiment
Experiment device 30 includes division module 31, Data block check code determining module 32 and system data correction verification module 33.Wherein divide
Module 31 is used to the COS data of smart card being divided at least two data blocks；Data block check code determining module 32 is for making
With built in smart card checking algorithm and preset initial value determine the check code of each data block；System data correction verification module 33
For the check code according to the COS data of the check code and smart card of data block, the COS versions of smart card are verified.
The COS version check devices 30 of the smart card of this preferred embodiment in use, division module 31 first by smart card
COS data be divided at least two data blocks, subsequent Data block check code determining module 32 uses the verification built in smart card
Algorithm and preset initial value determine the check code of each data block；Final system data check module 33 is according to the school of data block
The check code for testing the COS data of code and smart card verifies the COS versions of smart card.
The specifically used process of the COS version check devices 30 of the smart card of this preferred embodiment and above-mentioned smart card
The description of the first preferred embodiment of COS edition correcting methods is same or similar, specifically refers to the COS versions of above-mentioned smart card
Associated description in the first preferred embodiment of method of calibration.
The COS version check devices of the smart card of this preferred embodiment are multiple by being divided into the COS data of smart card
Data block realizes the COS versions to smart card by the comparison of the check code of check code and COS data to multiple data blocks
This progress effectively verifies.
Fig. 4 is please referred to, Fig. 4 is the structure of the second preferred embodiment of the COS version check devices of the smart card of the present invention
Schematic diagram.The COS version check devices 40 of this preferred embodiment include division module 41, data check code determining module 42 and
System data correction verification module 43.Wherein division module 41 is used to the COS data of smart card being divided at least two data blocks；Number
It is used to use checking algorithm and preset initial value built in smart card to determine each data block according to block check code determining module 42
Check code；System data correction verification module 43 is used for the check code of the COS data of the check code and smart card according to data block,
The COS versions of smart card are verified.
The Data block check code determining module 42 of this preferred embodiment further includes the first Data block check code determination unit 421
And the second numeric data code determination unit 422；System data correction verification module 43 includes verification unit 431.First Data block check code
Determination unit 421 be used for using built in smart card checking algorithm and preset initial value determine the check code of the first data block；
Second Data block check code determination unit 422 is used to determine using the check code of checking algorithm and data block built in smart card
The check code of next data block, until determining the check code of the last one data block；Verification unit 431 is used for according to last
The check code of the check code of a data block and the COS data of smart card verifies the COS versions of smart card.
The COS version check devices 40 of the smart card of this preferred embodiment in use, division module 41 first by smart card
COS data be divided at least two data blocks；First Data block check code of subsequent Data block check code determining module 42 is true
Order member 421 using built in smart card checking algorithm and preset initial value determine the check code of the first data block；Then it counts
According to block check code determining module 42 the second Data block check code determination unit 422 using built in smart card checking algorithm and
The check code of data block determines the check code of next data block, until determining the check code of the last one data block；It is finally
The verification unit 431 of the data check module of uniting 43 is according to the check code of the last one data block and the COS data of smart card
Check code verifies the COS versions of smart card.
The specifically used process of the COS version check devices 40 of the smart card of this preferred embodiment and above-mentioned smart card
The description of second preferred embodiment of COS edition correcting methods is same or similar, specifically refers to the COS versions of above-mentioned smart card
Associated description in second preferred embodiment of method of calibration.
The COS version check devices of the smart card of this preferred embodiment are multiple by being divided into the COS data of smart card
Data block, and be compared with the check code of COS data by the final check code of multiple data blocks, it realizes to smart card
COS versions are effectively verified.
Illustrate the COS edition correcting methods of the smart card of the present invention and the tool of calibration equipment below by a specific embodiment
Body running principle.
The acquirement of the check code of COS data：
If the COS data of smart card are 0x6162, using the check code algorithm of CRC-16/XMODEM, preset initial value takes
The check code of 0x0000, the COS data (i.e. COS versions) of calculating are 0x74FF.
The acquirement of the check code of data block：
If the COS data of smart card are 0x6162, the COS data of the smart card are divided into 0x61 and 0x62, are used first
The check code algorithm of CRC-16/XMODEM, preset initial value take 0x0000, the check code of the COS data (i.e. COS versions) of calculating
For：
(0x00<<8) ^crc (0x61^0x00)=0x7C87.
Then the check code algorithm of CRC-16/XMODEM, preset initial value is still used to take 0x7C87, the COS numbers of calculating
Check code according to (i.e. COS versions) is：
(0x87<<8) ^crc (0x62^0x7c)=0x8700^crc (1E)=0x8700^0xF3FF=0x74FF.
It can be seen that as the COS data of smart card use the school of the check code algorithm progress data of the CRC-16/XMODEM of standard
When testing, the check code of COS data should be identical with the check code of the last one data block.This is because CRC-16/
The generation of the check code of XMODEM is to be calculated as unit of each byte of data, therefore the check code of COS data can
Generated with whole COS data, can also COS data multiple data blocks for including generate.
If having modified COS data, but keep the check code of COS data constant again, it must be to the verification of COS data
Code algorithm is changed, and the check code algorithm after change has then been difficult to keep above-mentioned, and check code is with each byte of data is single
The characteristic that position is calculated.Therefore the check code that COS data are such as generated using multiple data blocks can cause data block final
Check code and the check code of COS data are inconsistent, are tampered so as to verify out COS data.
The COS data of smart card by being divided by the COS edition correcting methods and calibration equipment of the smart card of the present invention
Multiple data blocks are realized by the comparison of the check code of check code and COS data to multiple data blocks to smart card
COS versions are effectively verified.The COS version check devices for solving existing smart card cannot be to the COS numbers of smart card
The technical issues of according to effectively being verified.
Example the above is only the implementation of the present invention is not intended to limit the scope of the invention, every to utilize this hair
Equivalent structure transformation made by bright specification and accompanying drawing content is applied directly or indirectly in other relevant technical fields,
Similarly it is included within the scope of the present invention.
Claims (8)
1. a kind of COS edition correcting methods of smart card, which is characterized in that including step：
The COS data of smart card are divided at least two data blocks；
Use the check code of checking algorithm and each data block of preset initial value determination built in the smart card；And
According to the check code of the COS data of the check code of the data block and the smart card, to the COS versions of the smart card
This is verified；
Wherein described checking algorithm and preset initial value using built in the smart card determines the school of each data block
The step of testing yard include：
Using built in the smart card checking algorithm and preset initial value determine the check code of first data block；And
The verification of next data block is determined using the check code of checking algorithm and current data block built in the smart card
Code, until determining the check code of the last one data block；
The check code of the COS data of the check code and smart card according to the data block, to the smart card
The step of COS versions are verified be specially：
According to the check code of the COS data of the check code of the last one data block and the smart card, to the intelligence
The COS versions of card are verified.
2. the COS edition correcting methods of smart card according to claim 1, which is characterized in that using in the smart card
The checking algorithm and the preset initial value set determine the check code of the COS data of the smart card.
3. the COS edition correcting methods of smart card according to claim 1, which is characterized in that described according to described last
The check code of the check code of one data block and the COS data of the smart card, school is carried out to the COS versions of the smart card
The step of testing be specially：
Check code such as the last one data block is identical as the check code of COS data of the smart card, it is determined that described
The COS versions of smart card are normal；
Check code such as the last one data block is different from the check code of COS data of the smart card, it is determined that described
The COS versions of smart card are abnormal.
4. the COS edition correcting methods of smart card according to claim 1, which is characterized in that the COS by smart card
Data are divided into the step of at least two data blocks and are specially：
According to the application in the smart card, the COS data of smart card are divided at least two data blocks.
5. a kind of COS version check devices of smart card, which is characterized in that including：
Division module, for the COS data of smart card to be divided at least two data blocks；
Data block check code determining module is used to use checking algorithm and preset initial value built in the smart card to determine every
The check code of a data block；And
System data correction verification module is used for the verification of the COS data of the check code and smart card according to the data block
Code, verifies the COS versions of the smart card；
The wherein described Data block check code determining module includes：
First Data block check code determination unit, the checking algorithm and preset initial value for being used to use built in the smart card are true
The check code of fixed first data block；And
Second Data block check code determination unit is used to use the checking algorithm and current data block built in the smart card
Check code determines the check code of next data block, until determining the check code of the last one data block；
The system data correction verification module includes：
Verification unit, the verification of the COS data of the check code and smart card for the last one data block according to
Code, verifies the COS versions of the smart card.
6. the COS version check devices of smart card according to claim 5, which is characterized in that the system data verification
Module using built in the smart card checking algorithm and the preset initial value determine the smart card COS data school
Test code.
7. the COS version check devices of smart card according to claim 5, which is characterized in that the verification unit is specific
For：
Check code such as the last one data block is identical as the check code of COS data of the smart card, it is determined that described
The COS versions of smart card are normal；
Check code such as the last one data block is different from the check code of COS data of the smart card, it is determined that described
The COS versions of smart card are abnormal.
8. the COS version check devices of smart card according to claim 5, which is characterized in that the division module is specific
For：
According to the application in the smart card, the COS data of smart card are divided at least two data blocks.
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| CN102882651B (en) * | 2012-09-27 | 2015-04-29 | 华为技术有限公司 | Cyclic redundancy check method and cyclic redundancy check device |
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