WO2018165950A1

WO2018165950A1 - Emv implementation method and device

Info

Publication number: WO2018165950A1
Application number: PCT/CN2017/076973
Authority: WO
Inventors: 宋孝亮
Original assignee: 深圳大趋智能科技有限公司
Priority date: 2017-03-16
Filing date: 2017-03-16
Publication date: 2018-09-20
Also published as: CN107454953A; CN107454953B

Abstract

Disclosed are an EMV implementation method and device, the method comprising: clearing original tag data within tags, and reading specific values of all the tags; allocating dynamic memory for the plurality of tags; according to the tags and the specific values corresponding to the tags, establishing a tag index table; according to the tag index table, searching for a target tag corresponding to tag data to be written, and writing the tag data into the target tag to use the dynamic memory. Access and maintenance are simple, and the memory requirements are low.

Description

Technical field

[0001] The present invention relates to the field of EMV implementation, and in particular, to an implementation method and apparatus for an EMV.

Background technique

[0002] EMV uses TLV (TLV structure is a transmission structure, a buf, through T (tag) index, through L

(len) Specify the subsequent length, save the data by V (value) to save the specified length format, such as card number, track data, card expiration date, certificate, etc. The EMV standard is a bank card developed by the three major international bank card organizations - Europa y (European Card, which has been acquired by MasterCard), MasterCard (MasterCard) and Visa (Visa), from the magnetic stripe card to the smart IC card. The technical standard is based on the financial payment standard of IC cards and has become a recognized global standard.

[0003] MPOS is a new payment product, which is connected with general intelligent mobile devices such as mobile phones and tablet computers, and transmits information through the Internet. The external device performs operations such as card reading, password input, data encryption and decryption, and prompt information display. The application of the payment function. With the popularity of the mobile Internet, the process of using MPOS will be more convenient, the amount of MPOS will be larger and larger, and the cost pressure of the corresponding manufacturers will be greater and greater. MPOS has become a trend with domestically produced less secure security chip solutions. However, due to the security chip storage space and memory limitations, many vendors have simplified EMV, and many functions have not been realized. It is also difficult for peers to be compatible with the non-contact fast payment methods of various card organizations. For the problem of resource shortage, a new type of EMV implementation method is urgently needed.

[0004] Existing EMV technologies have the following disadvantages:

[0005] Disadvantage 1: The related TLV fixed length and variable length data add up to more than 100, different cards and different terminals have different TLV data, regardless of the chip resources, the program starts at the beginning The maximum memory is allocated for all TLV data first, or the maximum memory is defined, resulting in insufficient memory in the small-chip security chip solution.

[0006] Disadvantage 2: The EMV specification states that there is a need for a card, and the terminal needs to send the specified data list to the card. In order to reduce the processing of the data in the IC card, the specified data list is not TLV encoded, only A number of V values. The list of TL (tag and length) used for V is pre-defined in the IC card, called Data Object List (DOL), ie the card will be fixed in format if needed

The DOL is transmitted to the terminal, and the terminal organizes the corresponding data in order according to the DOL request and returns it to the card. The basic format of DOL is as follows: label 1 data length label 2 data length... label n data length, if the code processing is performed in the structure of pre-allocated memory, it is very troublesome to implement, need to remember each one The position of the label in the structure, and the maximum length, in each place where the label needs to be used, the position in the structure must be read first, and then the data is retrieved from the structure, which has the problem of troublesome code maintenance.

[0007] Disadvantage 3: Different cards have the same definition of the same label, such as 9F79, the MasterCard organization uses as the protected data field 5, and the Visa organization indicates the available balance. For these special labels, the general processing method Special labels are specially handled in special places. This program is not easy to read, the code is not easy to maintain, and it is easy to make mistakes.

technical problem

The main object of the present invention is to provide an implementation method and device for an EMV, which aims to solve the problem of high memory resource occupancy.

Problem solution

Technical solution

[0009] The present invention provides an implementation method of an EMV, including,

[0010] clearing the original first tag data in the tag, and reading the specific value of each tag;

[0011] allocating a piece of dynamic memory to the plurality of tags, and saving the specific value of the tag to the dynamic memory;

[0012] establishing a label index table according to the specific value corresponding to the label and the label;

[0013] searching for a target tag corresponding to the second tag data to be written according to the tag index table, and writing the second tag data into the target tag.

[0014] Further, the specific value includes a label identifier, a label minimum length, a label maximum length, a data format, and a supported card organization.

[0015] Further, the step of allocating a dynamic memory for a plurality of tags includes:

[0016] assigning a piece of dynamic memory to the plurality of tags according to the specific value information of the tag, and recording the use location of the dynamic memory.

[0017] Further, the searching for the target label corresponding to the second label data to be written according to the label index table The step of writing the second tag data into the target tag includes the following steps:

[0018] determining whether the tag label of the target tag exists in the tag cable I table;

[0019] if there is a label indication of the target label, it is determined whether the card organization supported by the target label is a card organization corresponding to the second label data;

[0020] If the card organization corresponding to the second tag data is written, it is determined whether the data format of the target tag is correct; [0021] if the data format of the target tag is correct, it is determined whether the tag identifier of the target tag exists in the tag index.

[0022] if the label identifier of the target label exists in the label index, the second label data is written into the dynamic memory corresponding to the target label;

[0023] If the tag identifier of the target tag does not exist in the tag index, look for an idle index, and create a new tag as the target tag;

[0024] determining whether there is sufficient storage space in the target tag to write the second tag data;

[0025] If there is sufficient storage space in the target tag, the second tag data is written into the dynamic memory corresponding to the target tag.

[0026] Further, after the step of writing the second tag data into the dynamic memory corresponding to the target tag, the method includes

[0027] copying the specific value of the target tag in the tag index table into the tag index, where the tag index points to the use position of the dynamic memory.

[0028]

[0029] The present invention provides an apparatus for implementing an EMV, including

[0030] an initialization unit, configured to clear original first tag data in the tag, and read a specific value of each tag;

[0031] a memory allocation unit, configured to allocate a piece of dynamic memory for multiple tags, and save the specific value of the tag to the corresponding dynamic memory;

[0032] a table building unit, configured to establish a label index table according to the specific value corresponding to the label and the label; [0033] a data writing unit, configured to search for a second to be written according to the label index table The target tag corresponding to the tag data, and the second tag data is written into the target tag.

[0034] Further, the specific value includes a label identifier, a minimum length of the label, a maximum length of the label, and a data grid. And supported card organization.

[0035] Further, the memory allocation unit includes a memory allocation module, and the memory allocation module is configured to allocate a piece of dynamic memory to the plurality of tags according to the specific value information of the tag, and record the use position of the dynamic memory.

[0036] Further, the data writing unit further includes:

[0037] a first determining module, configured to determine whether a label identifier of the target label exists in the label index table;

[0038] a second determining module, configured to determine, if the label of the target label exists, whether the card organization supported by the target label is a card organization corresponding to the second label data;

[0039] The third determining module is configured to determine, if the card organization corresponding to the second tag data is written, whether the data format of the target tag is correct;

[0040] a fourth determining module, configured to determine, if the data format of the target tag is correct, whether the tag identifier of the target tag exists in the tag index;

[0041] a new module is configured to: if there is no label label of the target label in the label index, find an idle index, and create a new label as the target label;

[0042] a fifth determining module, configured to determine whether there is sufficient storage space in the target tag to write the second tag data;

[0043] The writing module is configured to write the second tag data into the dynamic memory corresponding to the target tag if the tag identifier of the target tag exists in the tag index or if there is sufficient storage space in the target tag.

[0044] Further, the data writing unit further includes a copy module, where the copy module is configured to copy a specific value of the target tag in the tag index table into a tag index, where the tag index points to the dynamic memory. utilized location.

Advantageous effects of the invention

Beneficial effect

[0045] The beneficial effects of the present invention are: It is simple and convenient to access the tag data according to the tag, and the specific value and tag data of the specific tag can be obtained through the tag index, which is simple to read and maintain; by setting a piece of dynamic memory for multiple tags The way, multiple different tags share a dynamic memory. Compared to setting a maximum memory for each tag, the required memory resources are greatly reduced, and all the security chips of 4 8K and above can be realized. Complete EMV. Brief description of the drawing

DRAWINGS

1 is a schematic flowchart of a method for implementing an EMV according to an embodiment of the present invention;

2 is a schematic flowchart of a method for implementing an EMV according to another embodiment of the present invention;

3 is a specific flow diagram of a step of writing a corresponding second tag data for a target tag according to an embodiment of the invention.

4 is a structural block diagram of an apparatus for implementing an EMV according to an embodiment of the present invention;

5 is a structural block diagram of a data writing unit according to an embodiment of the present invention;

6 is a structural block diagram of a tag index, a tag, and a dynamic memory according to an embodiment of the present invention.

[0052]

[0053] The implementation, functional features, and advantages of the present invention will be further described in conjunction with the embodiments.

BEST MODE FOR CARRYING OUT THE INVENTION

The specific embodiments described herein are intended to be illustrative only and not to limit the invention.

The descriptions of "first", "second" and the like in the present invention are used for the purpose of description only, and are not to be construed as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Thus, features defining "first" and "second" may include at least one of the features, either explicitly or implicitly. In addition, the technical solutions between the various embodiments may be combined with each other, but must be based on the realization of those skilled in the art, and when the combination of the technical solutions is contradictory or impossible to implement, it should be considered that the combination of the technical solutions does not exist. It is also within the scope of protection required by the present invention.

[0056] The singular forms "a", "an", "the" It will be further understood that the phrase "comprising", used in the <RTI ID=0.0> </RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> the meaning of the present invention means that the features, integers, steps, operations, components and/or components are present, but one or more other features are not excluded or added. , integers, steps, operations, components, components, and/or groups thereof. The phrase "and/or" used herein includes all or any of the elements and all combinations of one or more of the associated listed.

[0057] Those skilled in the art can understand that all terms (including techniques) used herein are unless otherwise defined. The terminology and scientific terminology have the same meaning as commonly understood by one of ordinary skill in the art to which the invention pertains. It should also be understood that terms such as those defined in a general dictionary should be understood to have meaning consistent with the meaning in the context of the prior art, and will not be idealized or excessive unless specifically defined as here. The formal meaning is explained.

[0058]

[0059] Referring to FIG. 1, the present invention provides an implementation method of an EMV, including the following steps:

[0060] S10. Clear the original first tag data in the tag, and read the specific value of each tag.

[0061] Sl l, allocate a piece of dynamic memory for multiple tags, and save the specific value of the tag to the dynamic memory.

[0062] S12. Create a label index table according to specific values corresponding to the label and the label.

[0063] S13. Search for a target tag corresponding to the second tag data to be written according to the tag index table, and write the second tag data into the target tag.

[0064] In step S10, the label index is initialized, and the original first label data in each label is cleared. After the initialization is completed, the current label stores the number of the first label data as 0, and the current memory is used. Is 0. After initialization, the specific value of each label is read. The specific values include label label, minimum label length, maximum label length, data format, and supported card organization.

[0065] For step S1 l, a plurality of tags are jointly applied for a dynamic memory for writing/storing tag data, that is, multiple tags use the same piece of dynamic memory, and the specific size of the dynamic memory is smaller than that of each tag. Allocate a maximum memory sum size. When used normally, the same dynamic memory tag will not be used, that is, all the tags will not be written to the tag data. There are free tags in the tags of dynamic memory. This part of the tags does not occupy the size of dynamic memory. All dynamic memory can be used only for some tags. For example, when labels 1, 2, 3, and 4 use a piece of dynamic memory together, the specific use of 吋, because 1-4 labels will not be used, so after allocating dynamic memory, dynamic memory can be A, A is less than 1 - The sum of the maximum memory that can be allocated by each of the -4 tags. When the number of tags using the same piece of dynamic memory increases, the difference between A and B also increases.

[0066] Therefore, unlike the existing scheme for defining the maximum memory for each tag, it is possible to allocate enough memory for each tag under the premise of limited memory resources, and it can be used in all existing 48K and EMV is implemented in the above memory security chip to reduce EMV cost. [0067] For step S12, a label index table is created, and all the specific values of the label, that is, the minimum length of the label, the maximum length of the label, the data format, and the data of the card organization are known from the label index table, and the reading is simple, and Easy to maintain.

[0068] In step S13, after the label is initialized and the dynamic memory is allocated to the label, the second label data is written to the label index, where the second label data may be the label data in the terminal or may be obtained from the IC card. The tag data, which enables the writing of tag data of a specific tag, is straightforward.

[0069] Program reads can access data values through tags, rather than by accessing the structure, and define the card organization supported by each tag.

[0070] The implementation method of the EMV uses a dynamic memory application method to save various tag data, which greatly reduces the required storage resources and memory resources. In all current security chips of 48K and above, a complete EMV can be realized; The program accesses the corresponding tag data through the tag, instead of accessing the structure, which can solve the reading, maintenance and compatibility issues, and defines the card organization supported by each tag.

[0071]

[0072] Referring to FIG. 2 and FIG. 3, the present invention provides an implementation method of an EMV, including the following steps:

[0073] S20. Clear the original first tag data in the tag, and read the specific value of each tag.

[0074] S2 allocates a piece of dynamic memory to the plurality of tags according to the specific value information of the tag, records the use position of the dynamic memory, and saves the specific value of the tag to the corresponding dynamic memory.

[0075] S22. Create a label index table according to specific values corresponding to the label and the label.

[0076] S23. Search for a target tag corresponding to the second tag data to be written according to the tag index table, and write the second tag data into the target tag.

[0077] In step S20, the label index is initialized, and the original first label data in each label is cleared. After the initialization is completed, the current label stores the number of the first label data as 0, and the current memory used position is also 0. After initialization, the specific value of each tag is read. The specific values include label label, label minimum length, label maximum length, data format and supported card organization.

[0078] In step S21, a plurality of tags are jointly applied for a dynamic memory for writing/storing tag data, that is, multiple tags use the same dynamic memory, and the specific size of the dynamic memory is smaller than that of each tag. The size of a maximum memory sum, when used normally, use the same block of dynamic memory Labels, not all of them will be used, that is, all the labels will not be written to the label data. Therefore, there are free labels in the labels belonging to the same dynamic memory. This part of the labels does not occupy dynamic memory. Size, all dynamic memory can be used only for some tags. For example, when labels 1, 2, 3, and 4 use a piece of dynamic memory together, the specific use of 吋, because 1-4 labels will not be used, so after allocating dynamic memory, dynamic memory can be A, A is less than 1 - The sum of the maximum memory that can be allocated by each of the -4 tags. When the number of tags using the same piece of dynamic memory increases, the difference between A and B also increases.

[0079] Therefore, unlike the existing scheme for defining the maximum memory for each tag, it is possible to allocate sufficient memory size for each tag under the premise of limited memory resources, and it can be used in all existing 48K and EMV is implemented in the above memory security chip to reduce EMV cost.

[0080] For step S22, a label index table is created, and all the specific values of the label, that is, the minimum length of the label, the maximum length of the label, the data format, and the data of the card organization, etc., are known from the label index table.

Easy to read and easy to maintain.

[0081] In step S23, after the label is initialized and the dynamic memory is allocated to the label, the label data is written to the label index, where the second label data may be the second label data in the terminal or may be obtained from the IC card. The second tag data enables the writing of tag data of a specific tag to be simple and straightforward.

[0082] The program reads the tag data to access the tag data in the dynamic memory, rather than by accessing the structure, and defines the card organization supported by each tag.

[0083] Referring to FIG. 3, step S23 specifically includes the following steps:

[0084] S231. Determine whether a label identifier of the target label exists in the label index table.

[0085] If there is a label indication of the target tag, proceed to S232: determine whether the card organization supported by the target tag is a card organization corresponding to the second tag data.

[0086] If the card organization corresponding to the second tag data is written, proceed to S233: determine whether the data format of the target tag is correct.

[0087] If the data format of the target tag is correct, proceed to S235: determine whether the tag identifier of the target tag exists in the tag index.

[0088] If the label of the target label exists in the label index, proceed to S234: write the second label data into the dynamic memory corresponding to the target label. [0089] If the tag identifier of the target tag does not exist in the tag index, proceed to S236: search for an idle index, and create a new tag as the target tag.

[0090] S237. Determine whether there is enough storage space in the target tag to write the second tag data.

[0091] If there is sufficient storage space in the target tag, proceed to step S234: write the second tag data into the dynamic memory corresponding to the target tag.

[0092] S238. Copy the specific value of the target tag in the tag index table to the tag index, where the tag index points to the use position of the dynamic memory.

[0093] In step S235, when it is determined that there is no label label of the target tag, an idle index is searched, and a new tag is created as a new target tag, the tag data is written, and then the target is obtained from the tag index table. The specific value of the tag is written to the tag index.

[0094] An index in which idle is an index of an unsaved label.

[0095] The sequence between the specific step S232 and the step S233 may be interchanged, but the actual work 吋, from the determining step S231 to the determining step S235, are determined step by step, if one step is not satisfied, then When the judgment process ends, the corresponding tag data is not written, and the latter judgment step is performed on the premise that the previous judgment step satisfies the specific condition.

Referring to FIG. 6, in a specific embodiment of the present invention, the label 9F79, the label 9F15, and the label 9F30 share a piece of dynamic memory. When the device needs to read the label data corresponding to the label 9F15, the label 9F15 is directly determined by the label index. And the corresponding tag data is read from the dynamic memory, the whole structure is simple to program, convenient to maintain, not easy to make mistakes, and the memory resources occupied by the same are greatly reduced.

[0097] The implementation method of the EMV uses a dynamic memory application method to save various tag data, which greatly reduces the required storage resources and memory resources. In all current security chips of 48K and above, a complete EMV can be realized; The program accesses the corresponding tag data through the tag, instead of accessing the structure, which can solve the reading, maintenance and compatibility issues, and defines the card organization supported by each tag.

[0098]

[0099] Referring to FIG. 4 and FIG. 5, another embodiment of the present invention provides an apparatus for implementing an EMV, including: [0100] an initializing unit 10, configured to clear original first label data in a label, and read Take the specific value of each label; [0101] The memory allocating unit 20 is configured to allocate a piece of dynamic memory for the plurality of tags, and save the specific value of the tag to the dynamic memory;

[0102] The table building unit 30 is configured to establish a label index table according to the label and the specific value corresponding to the label; [0103] the data writing unit 40 is configured to search for the to-be-written according to the label index table. The target tag corresponding to the second tag data, and the second tag data is written into the target tag.

[0104] For the initialization unit 10, the label index is initialized, and the original first label data in each label is cleared. After the initialization is completed, the current label stores the number of the first label data as 0, and the current memory is used. Is 0. After initialization, read the specific value of each label, including specific labels

, the minimum length of the label, the maximum length of the label, the data format, and the supported card organization.

[0105] For the memory allocation unit 20, a plurality of tags are jointly applied for a piece of dynamic memory for writing/storing tag data, that is, multiple tags use the same piece of dynamic memory, and the specific size of the dynamic memory is smaller than that of each tag. The size of a maximum memory sum is separately allocated. When the label is used normally, the same dynamic memory label will not be used, that is, all the labels will not be written to the label data. There are free tags in the same dynamic memory tag. This part of the tag does not occupy the size of dynamic memory. All dynamic memory can be used only for some tags. For example, when labels 1, 2, 3, and 4 use a piece of dynamic memory together, the specific use of 吋, because 1-4 labels will not be used, so after allocating dynamic memory, dynamic memory can be A, 1-4 The sum of the maximum memory that can be assigned to each of the number labels is B, and A is less than B. When the number of labels using the same dynamic memory increases, the difference between A and B also increases.

[0106] Therefore, unlike the existing scheme for defining the maximum memory for each tag, it is possible to allocate enough memory for each tag under the premise of limited memory resources, and it can be used in all existing 48K and EMV is implemented in the above memory security chip to reduce EMV cost.

[0107] For the table construction unit 30, a label index table is established, and all the specific values of the label can be known from the label index table, that is, the minimum length of the label, the maximum length of the label, the data format, and the data of the card organization, etc., and the reading is simple. And easy to maintain.

[0108] For the data writing unit 30, after initializing the label and allocating the dynamic memory for the label, the second label data is written to the label, wherein the second label data may be the second label data in the terminal. It is the second tag data obtained from the IC card, and the tag data of the specific tag is written, which is simple. Directly.

[0109] The program reads the tag data to access the tag data, rather than by accessing the structure, and defines the card organization supported by each tag.

[0110] The memory allocation unit 20 includes a memory allocation module that allocates a piece of dynamic memory for a plurality of tags according to the specific value information of the tag, and records the use position of the dynamic memory.

[0111] The data writing unit 40 further includes the following modules:

[0112] The first determining module 41 is configured to determine whether a label identifier of the target label exists in the label index table.

[0113] The second determining module 42 is configured to determine, if the label of the target label exists, whether the card organization supported by the target label is a card organization corresponding to the write label data.

[0114] The third determining module 43 is configured to determine whether the data format of the target tag is correct if the card organization corresponding to the second tag data is written.

[0115] The fourth determining module 44 is configured to determine, if the data format of the target tag is correct, whether the tag identifier of the target tag exists in the tag index.

[0116] A new module 45 is configured to find a free index if there is no label label of the target label in the label index.

, create a new label as the target label.

[0117] The fifth determining module 46 is configured to determine whether there is enough storage space in the target tag to write the second tag data.

[0118] The writing module 48 is configured to write the second tag data into the dynamic memory corresponding to the target tag if there is sufficient storage space in the target tag or if the tag identifier of the target tag exists in the tag index.

[0119] The copy module 47 is configured to copy the specific value of the target tag in the tag index table to the tag index, where the tag index points to the location of the dynamic memory.

[0120] Specifically, the first determining module 41, the second determining module 42, the third determining module 43, the fourth determining module 44, and the fifth determining module 46 are determined to enter the next determining module after the former is determined, Step by step to judge, if one of the modules is not satisfied, the judgment process ends, the corresponding second tag data is not written, and the latter judgment module is performed under the premise that the condition of the previous judgment module is satisfied.

[0121] An apparatus for implementing an EMV, which uses a dynamic memory application method to save various tag data, greatly reduces required storage resources and memory resources, and now all security chips of 48K and above can be used. A complete EMV is implemented; the program accesses the corresponding tag data through tags, rather than accessing the structure, which can solve reading, maintenance and compatibility issues, and defines the card organization supported by each tag.

[0122]

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the invention, and the equivalent structure or equivalent process transformations made by the description of the invention and the drawings are used directly or indirectly. Other related technical fields are equally included in the scope of patent protection of the present invention.

Claims

Claim

[Claim 1] An implementation method of an EMV, characterized in that,

Clearing the original first tag data in the tag, and reading the specific value of each tag; allocating a piece of dynamic memory for the plurality of tags, and saving the specific value of the tag to the dynamic memory;

And establishing, according to the specific value corresponding to the label and the label, a labeling table; searching for a target label corresponding to the second label data to be written according to the label index table, and writing the second label data to the Within the target label.

[Claim 2] The method for implementing an EMV according to claim 1, wherein the specific value includes a label identifier, a minimum label length, a label maximum length, a data format, and a supported card organization.

[Claim 3] The method for implementing an EMV according to claim 1, wherein the step of allocating a dynamic memory for a plurality of tags comprises:

A plurality of the tags are allocated a dynamic memory according to the specific value information of the tag, and the location of the dynamic memory is recorded.

The method for implementing the EMV according to claim 1, wherein the searching for the target tag corresponding to the second tag data to be written according to the tag index table, and the second tag data The step of writing the target label includes the following steps: determining whether the label label of the target label exists in the label I table; if there is a label label of the target label, determining whether the card organization supported by the target label is the second label data Corresponding card organization;

If the card organization corresponding to the second tag data is written, it is determined whether the data format of the target tag is correct;

If the data format of the target tag is correct, it is determined whether the tag identifier of the target tag exists in the tag index;

If the tag label of the target tag exists in the tag cable I, the second tag data is written into the dynamic memory corresponding to the target tag;

If there is no label label of the target label in the label index, look for the free index and create a new one. Label as the target label;

It is determined whether there is enough storage space in the target tag to write the second tag data; if there is enough storage space in the target tag, the second tag data is written into the dynamic memory corresponding to the target tag.

[Claim 5] The method for implementing the EMV according to claim 4, wherein after the step of writing the second tag data into the dynamic memory corresponding to the target tag,

The specific value of the target tag in the tag index table is copied into the tag index, and the tag index points to the use position of the dynamic memory.

[Claim 6] An apparatus for implementing an EMV, characterized in that

An initializing unit, configured to clear original first label data in the label, and read a specific value of each label;

a memory allocation unit, configured to allocate a piece of dynamic memory for multiple tags, and save the specific value of the tag to the corresponding dynamic memory;

a table building unit, configured to establish a label index table according to the specific value corresponding to the label and the label;

And a data writing unit, configured to search, according to the label index table, a target label corresponding to the second label data to be written, and write the second label data into the target label.

[Claim 7] The EMV implementation apparatus according to claim 6, wherein the specific value includes a label identifier, a label minimum length, a label maximum length, a data format, and a supported card organization.

The device for implementing the EMV according to claim 6, wherein the memory allocation unit includes a memory allocation module, and the memory allocation module is configured to use the specific value information of the tag as a plurality of The tag allocates a piece of dynamic memory and records the location of the dynamic memory.

The device for implementing an EMV according to claim 6, wherein the data writing unit further includes:

a first determining module, configured to determine whether a label label of the target label exists in the label index table a second determining module, configured to determine, if the label of the target label is present, whether the card organization supported by the target label is a card organization corresponding to the second label data, and a third determining module, configured to: if the second label data is written Card organization, it is judged whether the data format of the target tag is correct;

a fourth determining module, configured to determine whether a label identifier of the target label exists in the label index if the data format of the target label is correct;

Create a new module, if there is no label label of the target label in the label index, look for an idle index, and create a new label as the target label;

a fifth determining module, configured to determine whether there is sufficient storage space in the target tag to write the second tag data;

The write module, if there is a label label of the target label in the label index or if there is enough storage space in the target label, the second label data is written into the dynamic memory corresponding to the target label.

The device for implementing the EMV according to claim 6, wherein the data writing unit further includes a copy module, wherein the copy module is configured to: The value is copied into the tag index, which points to the location of the dynamic memory.