TWI526936B - Change the way smart card application type, intelligent terminal, service level Taiwan and systems - Google Patents

Description

Method of changing the type of smart card application, smart terminal, service level Station and system

The present invention relates to the field of communication technologies, and in particular, to a method, a smart terminal, a service platform and a system for changing a smart card application type.

Water card, electric card, bus card and other cards of different application types have been distributed in people's lives. For these kinds of smart cards, if you don't leave home, you can complete the storage and value of all smart cards through the network. Saving (the transfer of funds from the user's account to the smart card) and consumption operations will inevitably bring great convenience to the users. With the popularity of smart terminals, more and more users choose to use smart terminals to complete the business operations related to smart cards.

During the research, the applicant found that each smart card can only correspond to one application type. For example, if the application type of a smart card is a water card, the smart card can only be used as a water card, and the application type is static. That is, the smart card has a certain application type, and the application type can never be changed throughout the life cycle of the smart card. In this way, if the user's scope of use involves multiple application types, the user needs to have multiple smart cards, the user needs to manage a plurality of different smart cards, and it is necessary to distinguish the application types of different smart cards, which brings inconvenience to the user using the smart card. .

In view of this, the present invention provides a method for changing the type of smart card application, a smart terminal, a service platform and a system, to solve the technical problem that the smart card application type is single in the prior art.

In order to solve the above technical problem, the present invention provides a change smart card The application of the method, the smart terminal, the service platform and the system, the present invention provides the following technical solution: a method for changing the smart card application type, the method comprising: the smart terminal acquiring the smart card device currently connected to the smart terminal The device identifier is sent to the trusted service management TSM platform to send an authentication request message carrying the device identifier; the TSM platform determines whether the device identifier is included in the pre-stored device identifier set, and sends a report indicating whether the authentication is successful according to the judgment result. After receiving the authentication response message indicating that the authentication succeeds, the smart terminal sends an application download request message carrying the application type identifier to the TSM platform; the TSM platform searches for the device identifier corresponding to the device identifier from the pre-stored application set. At least one application, extracting an application indicating the application type identifier from the at least one application; and the smart terminal device forwards, to the smart card device, the TSM platform to send the application of the application type identifier indication to the smart terminal device, where the smart card device is The app loads.

Preferably, the smart terminal device forwards the application of the application type identifier indication to the smart terminal device to the smart card device, and the smart card device loads the application, including: the TSM platform according to the application type identifier indication The instruction sequence corresponding to the instruction set acquires an instruction; the TSM platform sends the instruction to the smart terminal; the smart terminal sends the instruction to the smart card device for execution; and the smart terminal sends the execution result of the instruction to the TSM platform. When the TSM platform determines that the instruction is executed successfully, follow the instruction The sequence acquires the next instruction in turn until all instructions in the instruction set are successfully executed.

Preferably, the smart terminal device forwards the application of the application type identifier sent by the TSM platform to the smart card device, and after the smart card device loads the application, the smart terminal device further includes: the smart terminal device receives the application sent by the TSM platform Download the results.

Preferably, after the smart terminal receives the authentication response message indicating that the authentication succeeds, and sends the application download request message carrying the application type identifier to the TSM platform, the smart terminal device further includes: the smart terminal device acquires the smart card device from the TSM platform. The initial status data includes the loaded application of the smart card device, the usage status of the loaded application, and the unloaded application.

Preferably, the device identifier of the smart card device is a label of the smart card device or a serial number of the smart card chip in the smart card device.

The invention also provides a smart terminal device, comprising: an acquisition module, configured to acquire a device identifier of a smart card device currently connected to the smart terminal device; and an authentication request message sending module, configured to be trusted The service management TSM platform sends an authentication request message carrying the device identifier, so that the TSM platform determines whether the device identifier is included in the pre-stored device identifier set, and sends an authentication response message indicating whether the authentication is successful according to the judgment result; the authentication response message The receiving module is configured to receive an authentication response message sent by the TSM platform, and the application download request message sending module is configured to send an application download carrying the application type identifier to the TSM platform after receiving the authentication response message indicating successful authentication Request a message so that the TSM platform can look up the set from the pre-stored application set And an application for extracting the application type identifier indication from the at least one application; the application forwarding module is configured to forward, to the smart card device, the application of the application type identifier sent by the TSM platform, where The smart card device loads the application.

Preferably, the application forwarding module includes: a first receiving submodule, configured to receive, by the TSM platform, one instruction according to an instruction sequence of the instruction set corresponding to the to-be-loaded application; the first sending submodule, The instruction is sent to the smart card device for execution; and the second sending submodule is configured to send the execution result of the instruction to the TSM platform.

Preferably, the smart terminal further includes: an application download result receiving module, configured to receive an application download result sent by the TSM platform.

Preferably, the smart terminal device further includes: an initial data acquisition module, configured to: after the authentication response message receiving module receives the authentication response message indicating that the authentication succeeds, and the application download request message sending module sends the message to the TSM platform Obtaining the initial state data of the smart card device from the TSM platform before the application download request message carrying the application type identifier, the initial state data including the loaded application of the smart card device, the used state of the loaded application, and the unloaded application.

The present invention further provides a service platform, the service platform includes: an authentication request message receiving module, configured to receive an authentication request message sent by the smart terminal device to carry the device identifier of the smart card device; and the determining module is configured to determine the pre-stored Whether the device identification set contains And an authentication response message sending module, configured to send an authentication response message indicating whether the authentication is successful according to the determination result; and the application download request message receiving module is configured to receive the application download request message sent by the smart terminal a search module, configured to search for at least one application corresponding to the device identifier from the pre-stored application set, extract an application indicating the application type identifier from the at least one application, and apply an application module to the smart terminal The application sends the application indicating the application type identifier, so that the smart terminal forwards the application indicated by the application type identifier to the smart card device, and the smart card device loads the application.

Preferably, the application sending module includes: an instruction acquiring sub-module, configured to acquire an instruction according to an instruction sequence in an instruction set corresponding to the application indicated by the application type identifier; and an instruction sending sub-module, configured to send the instruction Giving a smart terminal; executing a result receiving sub-module for receiving the execution result of the instruction sent by the smart terminal.

The trigger sub-module is configured to determine that the execution of the instruction is successful, and sequentially acquire the next instruction according to the instruction sequence, and trigger the instruction to send the sub-module until all the instructions in the instruction set are successfully executed.

Preferably, the service platform further includes: an application download result sending module, configured to send the application download result to the smart terminal machine.

Preferably, the service platform further includes: an initial data sending module, configured to send, to the smart terminal device, initial state data of the smart card device, where the initial state data includes the smart card device Load app, loaded app usage status, and unloaded app.

The present invention also provides a system for changing a smart card application type, the system comprising: a smart card device, any of the smart terminals described above, and any of the service platforms described above.

In the technical solution of the present invention, after the smart card device is authenticated by the TSM platform, the smart terminal sends a download application containing the downloaded application identifier to the TSM platform, and the TSM platform finds the application to be downloaded in the download list corresponding to the smart card device. And send the app to the smart card device for application loading. By changing the application of the smart card device, the dynamic loading of the corresponding application of the smart card device is realized. When a user needs a smart card of multiple application types, it is only necessary to load multiple applications into the smart card device by means of dynamic loading, thereby implementing one card multi-application type, which brings the user a smart card. convenient.

301‧‧‧Get the module

302‧‧‧Authorization request message sending module

303‧‧‧Authentication Response Message Receiving Module

304‧‧‧Application Download Request Message Sending Module

305‧‧‧Application Forwarding Module

401‧‧‧First Receiver Module

402‧‧‧First transmission submodule

403‧‧‧Second Transmitter Module

501‧‧‧Application Download Results Receiver Module

502‧‧‧Initial data acquisition module

601‧‧‧Authorization request message receiving module

602‧‧‧Judgement module

603‧‧‧Authentication Response Message Sending Module

604‧‧‧Application download request message receiving module

605‧‧‧Search module

606‧‧‧Application Sending Module

701‧‧‧ instruction acquisition sub-module

702‧‧‧Command Sending Submodule

703‧‧‧Execution result receiving submodule

704‧‧‧Trigger submodule

801‧‧‧Application Download Results Sending Module

802‧‧‧Initial data transmission module

901‧‧‧Smart Card Equipment

902‧‧‧Smart Terminal

903‧‧‧Service Platform

1 is a flowchart of Embodiment 1 of a method for changing a smart card application type according to the present invention; FIG. 2 is a flowchart of Embodiment 2 of a method for changing a smart card application type according to the present invention; FIG. 3 is a smart terminal device of the present invention; FIG. 4 is a schematic structural diagram of an application forwarding module in the smart terminal device of the present invention; FIG. 5 is another schematic structural diagram of the smart terminal device of the present invention; FIG. 6 is a schematic structural diagram of a service platform according to the present invention; FIG. 8 is a schematic structural diagram of a service platform of the present invention; FIG. 9 is a schematic structural diagram of a system for changing a smart card application type according to the present invention;

In order to enable a person skilled in the art to better understand the solution of the present invention, the technical parties in the embodiments of the present invention will be described below in conjunction with the accompanying drawings in the embodiments of the present invention. The present invention is clearly and completely described, and it is obvious that the described embodiments are only a part of the embodiments of the invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

Referring to FIG. 1 , which is a flowchart of Embodiment 1 of a method for changing a smart card application type, the embodiment may specifically include:

Step 101: The smart terminal acquires the device identifier of the smart card device currently connected to the smart terminal device.

When the smart terminal device obtains the device identifier of the smart card device currently connected to the smart terminal device, the smart terminal device and the smart card device may establish a communication connection through any interface of the device, for example, the smart terminal device It can be obtained through any interface of the smart terminal, for example, the data line interface of the smart terminal, the charging interface, the USB interface, and the like. The device identifier of the smart card device may be the label of the smart card device or the serial number of the smart card chip in the smart card device.

Step 102: The smart terminal sends an authentication request message carrying the device identifier to the trusted service management TSM platform.

The authentication of the smart card device mainly ensures that the smart card device has the right to use the resources of the TSM (Trust Services Management) platform.

Step 103: The TSM platform determines whether the device identifier is included in the pre-stored device identifier set, and sends an authentication response message indicating whether the authentication is successful according to the judgment result.

The TSM (Trust Services Management) platform stores the identifiers of all devices registered to the platform and the applications that can be downloaded. After receiving the authentication request message sent by the mobile terminal, the TSM platform searches for the same identifier of the device identifier in the application in the saved device identification list, if found To that, it is determined that the device is registered in the TSM platform, and the TSM platform can provide service management for it. And if the authentication succeeds, the authentication response message of the authentication success is sent to the smart terminal; if it is not found, the authentication failure is sent, and the authentication response message of the authentication failure is sent to the smart terminal.

Step 104: After receiving the authentication response message indicating that the authentication succeeds, the smart terminal sends an application download request message carrying the application type identifier to the TSM platform.

After the authentication of the smart card device is successful, the smart terminal sends an application download request message to the TSM platform, where the message carries the application type identifier to be downloaded by the smart card device.

Step 105: The TSM platform searches for the at least one application corresponding to the device identifier from the pre-stored application set, and extracts the application of the application type identifier indication from the at least one application.

After the TSM platform determines that the smart card device is registered on the platform, it searches for the at least one application corresponding to the device identifier from the pre-stored application set, and extracts the application of the application type identifier indication from the TSM platform.

Step 106: The smart terminal sends the smart card device to the smart card device to send the application of the application type identifier indication to the smart terminal device, and the smart card device loads the application.

After the TSM platform extracts the application indicating the application type identifier, the application indicating the application type identifier is sent to the smart terminal, and the smart terminal forwards the application of the application type identifier to the smart card device, for the smart card device to The app loads.

In an actual operation, the TSM platform extracts the application indicating that the application type identifier is specified to extract the instruction set corresponding to the application. Preferably, the TSM platform may pass one instruction in the instruction set to the smart terminal according to the instruction in the instruction set instruction. The machine forwards to the smart card device, and when the smart card device executes an instruction, sends the instruction execution result to the TSM platform through the smart terminal machine. If the instruction is executed successfully, the TSM platform follows the command set in the order of the instruction set. An instruction is sent to the smart card device for execution until all instructions in the instruction set are successfully executed. At this point, the type of smart card device application has been changed.

In the technical solution of the embodiment, after the smart card device is authenticated by the TSM platform, the smart terminal sends a download application containing the downloaded application identifier to the TSM platform, and the TSM platform finds the download to be downloaded in the download list corresponding to the smart card device. Apply and send the app to the smart card device for application loading. By changing the application of the smart card device, the dynamic loading of the corresponding application of the smart card device is realized. When a user needs a smart card of multiple application types, it is only necessary to load multiple applications into the smart card device by means of dynamic loading, thereby implementing one card multi-application type, which brings the user a smart card. convenient.

In the embodiment 1, the loading of the application in the smart card device is implemented, but when the smart terminal sends the application type identifier to be downloaded to the TSM platform, the TSM platform cannot save the application corresponding to the application type identifier to be downloaded, thereby The success rate of the smart card device loading application is not guaranteed. To solve this problem, reference is made to FIG. 2, which is a flowchart of Embodiment 2 of a method for changing a smart card application type. Specifically, it may include:

Step 201: The smart terminal acquires the device identifier of the smart card device currently connected to the smart terminal device.

Step 202: The smart terminal sends an authentication request message carrying the device identifier to the trusted service management TSM platform.

Step 203: The TSM platform determines whether the device identifier is included in the pre-stored device identifier set, and sends an authentication response message indicating whether the authentication is successful according to the judgment result.

For the implementation of the step 201 to the step 203, reference may be made to the step 101 to the step 103 in the embodiment 1, and details are not described herein again.

Step 204: After receiving the authentication response message indicating that the authentication succeeds, the smart terminal obtains the initial state data of the smart card device from the TSM platform.

The initial status data includes the loaded application of the smart card device, the usage status of the loaded application, and the unloaded application.

Step 205: The smart terminal sends an application download request message carrying an application type identifier to the TSM platform.

Step 206: The TSM platform searches for the at least one application corresponding to the device identifier from the pre-stored application set, and extracts the application of the application type identifier indication from the at least one application.

Step 207: The smart terminal device forwards the TSM platform to the smart card device to send the application of the application type identifier indication to the smart terminal device, and the smart card device loads the application.

For the implementation of the steps 205-207, refer to the implementation of the steps 104-106 in the embodiment 1, and details are not described herein again.

Step 208: The smart terminal receives the application download result sent by the TSM platform.

Preferably, when the smart card device loading application is successful, the TSM platform informs the smart terminal device that the application loading (or application downloading) is successful by sending short information to the smart terminal device.

It should be noted that, when a smart card device is loaded with multiple applications, to use an application, it is only necessary to select an application to be used in the loaded application, and then perform business operations related to the application.

In addition to the beneficial effects of the first embodiment, the smart terminal can obtain the smart card device through the TSM platform. Initialize the data, that is, the smart card has been loaded into the application and the unloaded application, so that an application to be loaded can be selected in the unloaded application to ensure that the TSM platform can obtain the application to be loaded, thereby ensuring that the application is to be loaded. The loading app can be successfully loaded into the smart card device. Improve the success rate of smart card device loading applications.

Correspondingly, after the method of the exemplary embodiment of the present invention is introduced, the following is a schematic structural diagram of a smart terminal device according to the present disclosure. The smart terminal device includes: an acquisition module 301, Obtaining a device identifier of the smart card device currently connected to the smart terminal device; the authentication request message sending module 302 is configured to send an authentication request message carrying the device identifier to the trusted service management TSM platform, so that the TSM platform can determine Whether the device identifier is included in the pre-stored device identifier set, and the authentication response message indicating whether the authentication is successful is sent according to the judgment result; the authentication response message receiving module 303 is configured to receive the authentication response message sent by the TSM platform; The request message sending module 304 is configured to: after receiving the authentication response message indicating that the authentication succeeds, send an application download request message carrying the application type identifier to the TSM platform, so that the TSM platform searches for the device identifier from the pre-stored application set. Corresponding at least one application, extracting an application of the application type identifier indication from the at least one application; The application forwarding module 305 is configured to forward the application of the application type identifier sent by the TSM platform to the smart card device, where the smart card device loads the application.

Preferably, referring to FIG. 4, it is a schematic structural diagram of the application forwarding module 305. The application forwarding module 305 includes: a first receiving submodule 401, configured to receive the TSM platform according to the waiting Loading an instruction in the instruction set corresponding to the application to obtain one instruction; the first sending sub-module 402 is configured to send the instruction to the smart card device for execution; and the second sending sub-module 403 is configured to execute the instruction. The results are sent to the TSM platform.

The function implemented by each module in the smart terminal corresponds to the method operation steps in the first embodiment, and details are not described herein again.

Referring to FIG. 5, it is another schematic structural diagram of a smart terminal device disclosed by the present invention. In addition to the module shown in FIG. 3, the smart terminal device further includes: an application download result receiving module 501, configured to receive The application downloading result sent by the TSM platform; the initial data obtaining module 502, after the authentication response message receiving module receives the authentication response message indicating that the authentication succeeds, and the application download request message sending module sends the carrying message to the TSM platform. Before the application download request message of the application type identifier, the initial state data of the smart card device is obtained from the TSM platform, and the initial state data includes the loaded application of the smart card device, the used state of the loaded application, and the unloaded application. .

The function implemented by each module in the smart terminal corresponds to the method operation steps in the second embodiment, and details are not described herein again.

Referring to FIG. 6 , it is a schematic structural diagram of a service platform according to the present disclosure. The service platform includes: an authentication request message receiving module 601, configured to receive an authentication of a device identifier of a smart card device sent by a smart terminal device. a request message 602, configured to determine whether the device identifier is included in the pre-stored device identifier set; the authentication response message sending module 603 is configured to send according to the determination result An authentication response message indicating whether the authentication is successful; an application download request message receiving module 604, configured to receive an application download request message sent by the smart terminal; and a search module 605, configured to search for the device from the pre-stored application set Identifying, by the at least one application, the application of the application type identifier indication, and the application sending module 606, configured to send the application of the application type identifier indication to the smart terminal, so that the smart terminal machine is intelligent The card device forwards the application indicated by the application type identifier for the smart card device to load the application.

FIG. 7 is a schematic structural diagram of the application sending module 606. The application sending module 606 includes: an instruction acquiring sub-module 701, configured to concentrate according to an instruction corresponding to the application indicated by the application type identifier. The instruction sequence acquires an instruction; the instruction transmission sub-module 702 is configured to send the instruction to the smart terminal; the execution result receiving sub-module 703 is configured to receive the instruction execution result sent by the smart terminal; the trigger sub-module 704 When it is determined that the execution of the instruction is successful, the next instruction is sequentially acquired in the order of the instruction, and the instruction is triggered to send the sub-module until all the instructions in the instruction set are successfully executed.

The function implemented by each module in the service platform corresponds to the method operation steps in Embodiment 1, and details are not described herein again.

Referring to FIG. 8 , it is another structural diagram of a service platform disclosed by the present invention. In addition to the module shown in FIG. 6 , the service platform further includes: an application download result sending module 801, configured to the smart terminal. Send the app download results.

The initial data sending module 802 is configured to send the initial state data of the smart card device to the smart terminal device, where the initial state data includes the loaded application of the smart card device, the used state of the loaded application, and the unloaded application. .

The function implemented by each module in the service platform corresponds to the method operation steps in Embodiment 2, and details are not described herein again.

Correspondingly, the present invention further provides a system for changing a smart card application type. Referring to FIG. 9 , it is a schematic structural diagram of a system for changing a smart card application type, where the system includes: a smart card device 901, FIG. 3 or The smart terminal 902 shown in FIG. 5, the service platform 903 shown in FIG. 6 or 8.

The functions implemented by the modules in the system correspond to the operation steps of the method in the first embodiment and the second embodiment, and are not described here.

It is to be understood that the terms "comprises" or "comprising" or "comprising" or "comprising" or "the" Other elements that are explicitly listed, or include elements inherent to such a process, method, item, or device. An element that is defined by the phrase "comprising a ..." does not exclude the presence of additional equivalent elements in the process, method, item, or device that comprises the element.

For the system embodiment, since it basically corresponds to the method embodiment, it can be referred to the partial description of the method embodiment. The system embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separate, and the components displayed as units may or may not be physical units, ie may be located A place, or it can be distributed to multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the embodiment. Those of ordinary skill in the art can understand and implement without any creative effort.

The above is only a specific embodiment of the present invention, and it should be noted that those skilled in the art can also make several improvements and retouchings without departing from the principles of the present invention. It should be considered as the scope of protection of the present invention.

Claims (11)

A method for changing a smart card application type, wherein the method comprises: a smart terminal machine acquiring a device identifier of a smart card device currently connected to the smart terminal device; and the smart terminal device transmitting the carrying device identifier to a trusted service management TSM platform The authentication request message; the TSM platform determines whether the device identifier is included in the pre-stored device identifier set, and sends an authentication response message indicating whether the authentication is successful according to the judgment result; after receiving the authentication response message indicating that the authentication succeeds The smart terminal sends an application download request message carrying the application type identifier to the TSM platform; the TSM platform searches for the at least one application corresponding to the device identifier from the pre-stored application set, and extracts the application from the at least one application. The application of the type identifier indicates that the smart terminal device forwards the TSM platform to the smart card device to send the application of the application type identifier to the smart terminal device, and the smart card device loads the application, including: the TSM platform according to the application The type identifier indicates that the instruction sequence corresponding to the application in the instruction set acquires one The TSM platform sends the command to the smart terminal device; the smart terminal sends the command to the smart card device for execution; the smart terminal sends the execution result of the command to the TSM platform; when the TSM platform determines that the command is successfully executed, The next instruction is fetched sequentially in the order of the instruction until all instructions in the instruction set are successfully executed. The method of claim 1, wherein the smart terminal device forwards the application of the application type identifier sent by the TSM platform to the smart card device, and the smart card device further includes: the smart terminal device after loading the application Receiving application download results sent by the TSM platform. The method of claim 1, wherein after the smart terminal receives the authentication response message indicating that the authentication succeeds, and sends the application download request message carrying the application type identifier to the TSM platform, the method further includes: The terminal obtains the initial state data of the smart card device from the TSM platform, and the initial state data includes the loaded application of the smart card device, the used state of the loaded application, and the unloaded application. The method of claim 1, wherein the device identifier of the smart card device is a label of the smart card device or a serial number of the smart card chip in the smart card device. A smart terminal device, wherein the smart terminal device comprises: an acquisition module, configured to acquire a device identifier of a smart card device currently connected to the smart terminal device; and an authentication request message sending module, configured to manage the TSM to the trusted service The platform sends an authentication request message carrying the device identifier, so that the TSM platform determines whether the device identifier is included in the pre-stored device identifier set, and sends an authentication response message indicating whether the authentication is successful according to the determination result; the authentication response message receiving module And the application downloading request message sending module sends an application download request message carrying the application type identifier to the TSM platform after receiving the authentication response message indicating that the authentication is successful, So that the TSM platform searches for the at least one application corresponding to the device identifier from the pre-stored application set, and extracts the application of the application type identifier indication from the at least one application; The application forwarding module is configured to forward the application of the application type identifier sent by the TSM platform to the smart card device, where the smart card device loads the application, and the application forwarding module includes: a first receiving submodule, And receiving, by the TSM platform, one instruction according to an instruction sequence of the instruction set corresponding to the to-be-loaded application; the first sending sub-module is configured to send the instruction to the smart card device for execution; and the second sending sub-module, Used to send the execution result of the instruction to the TSM platform. The smart terminal device of claim 5, wherein the smart terminal device further comprises: an application download result receiving module, configured to receive an application download result sent by the TSM platform. The smart terminal device of claim 5, wherein the smart terminal device further comprises: an initial data acquisition module, configured to: after the authentication response message receiving module receives the authentication response message indicating that the authentication succeeds, and the application The download request message sending module obtains the initial state data of the smart card device from the TSM platform before sending the application download request message carrying the application type identifier to the TSM platform, where the initial state data includes the loaded application of the smart card device, Load the app's usage status and not load the app. A service platform, wherein the service platform comprises: an authentication request message receiving module, configured to receive an authentication request message of a device identifier of a smart card device sent by a smart terminal device; and a determining module, configured to determine a pre-stored device identifier Whether the device identifier is included in the set; the authentication response message sending module is configured to send, according to the determination result, an authentication response message indicating whether the authentication is successful; The application download request message receiving module is configured to receive an application download request message sent by the smart terminal device, and the search module is configured to search, from the pre-stored application set, at least one application corresponding to the device identifier, from the at least one application. Extracting the application of the application type identifier indication; the application sending module is configured to send the application of the application type identifier indication to the smart terminal device, so that the smart terminal device forwards the application of the application type identifier indication to the smart card device for the wisdom The card device loads the application, and the application sending module includes: an instruction acquiring sub-module, configured to acquire an instruction according to an instruction sequence in an instruction set corresponding to the application indicated by the application type identifier; and the instruction sending sub-module, The method is configured to send the instruction to the smart terminal device; the execution result receiving submodule is configured to receive the execution result of the instruction sent by the smart terminal device; and the triggering submodule is configured to determine that the instruction is executed successfully, according to the order of the instruction Get the next instruction, trigger the instruction to send the submodule until all the instructions in the instruction set It was successfully executed. The service platform of claim 8, wherein the service platform further comprises: an application download result sending module, configured to send an application download result to the smart terminal. The service platform of claim 8, wherein the service platform further comprises: an initial data sending module, configured to send, to the smart terminal device, initial state data of the smart card device, where the initial state data includes the smart card device Load app, loaded app usage status, and unloaded app. A system for changing a smart card application type, wherein the system includes: a smart card device, the smart terminal device according to any one of claims 5-7, and the service platform according to any one of claims 8-10 .