WO2019056967A1

WO2019056967A1 - Smart card, control method thereof, and computer readable storage medium

Info

Publication number: WO2019056967A1
Application number: PCT/CN2018/105143
Authority: WO
Inventors: 陈柳章
Original assignee: 深圳市文鼎创数据科技有限公司
Priority date: 2017-09-22
Filing date: 2018-09-12
Publication date: 2019-03-28
Also published as: CN107844821A; CN107844821B

Abstract

A smart card (100), a control method (200) thereof, and a computer readable storage medium. The method comprises the following steps: an application module (21) receives a command sent by a main control module (10) (S10); the application module (21) detects the current command protocol type of the command sent by the main control module (10) (S20); determine whether the current command protocol type is a preset protocol type (S30); if it is determined that the current command protocol type is the preset protocol type, the application module (21) responds to and executes the command sent by the main control module (20) (S40). According to the smart card (100), a card reading device such as a card reader is not needed for connection, and the application range of the smart card (100) is expanded.

Description

Smart card and control method thereof, computer readable storage medium

Technical field

The present invention relates to the field of smart card technologies, and in particular, to a smart card capable of running a JAVA card program, a control method thereof, and a computer readable storage medium.

Background technique

The JAVA card is a smart card that can run the JACard applet (JavaCard Applet). Using the platform independence of the JAVA language, the idea of "writing once, running anywhere" of JAVA technology can be realized on the smart card. After several generations of JAVA card technical specifications, the JAVA Card 2.0 specification was released at the end of 1997. This version of the specification defines the specific API (Application Program Interface (application programming interface) interface function, and introduce a JAVA card virtual machine that is much smaller than the JAVA card virtual machine, but also meets the basic characteristics of the JAVA language.

The JAVA card with the virtual machine makes the JAVA card platform and application completely separate. A card with JAVA card platform can download the application after the platform is released. This is a JAVA card has a more convenient advantage than a native language such as C. A JAVA card can adapt to different application scenarios. Without developing multiple versions of COS (Chip Operation System, on-chip operating system). The separation of platforms and applications is achieved through a unified API. To develop a version of the JAVA card API international standard, the platform layer implements the API function, and the application calls the API interface to implement the function.

However, the existing JAVA card generally only includes a communication interface for smart cartoons, that is, at least one of an ISO7816 interface unit or an NFC (Near Field Communication) interface unit, and is only connected through an ISO7816 interface unit or an NFC interface unit. In the case of a card reader terminal, information interaction and data processing can be performed, which limits the use scenario of the JAVA smart card.

technical problem

The main object of the present invention is to provide a smart card and a control method thereof, and a computer readable storage medium, which are intended to expand the function and use range of the smart card.

Technical solution

To achieve the above objective, a smart card control method provided by the present invention is applied to a smart card, and the smart card includes an application module and a main control module, and includes the following steps:

The application module receives a command sent by the main control module;

The application module detects a current command protocol type of a command sent by the main control module;

Determining whether the current command protocol type is a preset protocol type;

When it is determined that the current command protocol type is the preset protocol type, the application module executes a command sent by the main control module.

Further, the application module includes a Java Card virtual machine;

The step of the application module receiving the command sent by the main control module includes:

The application module receives a command sent by the main control module through the Java Card virtual machine.

Further, the step of the application module detecting the current command protocol type of the command sent by the main control module includes:

The Java card virtual machine records a current command protocol type to cause the application module to detect the current command protocol type of the command sent by the main control module.

Further, the application module further includes an applet;

The step of the application module detecting the current command protocol type of the command sent by the main control module includes:

The Java card virtual machine records a current command protocol type;

The Java Card virtual machine provides an API for obtaining a current command protocol type;

The applet invokes an API provided by the Java Card virtual machine to obtain a current command protocol type.

Further, the step of determining whether the current command protocol type is a preset protocol type includes:

Determining, by the applet, whether the current command protocol type is a preset protocol type;

When the determining that the current command protocol type is a preset protocol type, the step of the application module responding to and executing the command sent by the main control module includes:

When the applet determines that the current command protocol type is a preset protocol type, the applet executes a command sent by the main control module.

Further, the main control module and the application module are connected through an I2C or SPI interface.

Further, the command sent by the main control module includes an APDU command.

Further, the preset protocol type is a communication protocol of a current APDU transmission channel between the main control module and the application module.

Further, before the step of the application module receiving the command sent by the main control module, the method further includes:

The main control module generates a corresponding command in response to the user's input and sends the command to the application module.

Further, the smart card includes a UI interface;

The step of the main control module responding to the user's input, generating the corresponding command, and sending the command to the application module includes:

The main control module receives a user UI operation instruction through the UI interface, and parses the operation command to generate the command;

Send the command to the application module.

Further, the smart card includes an IO interface;

The main control module receives an instruction sent by the host computer through the IO interface, and parses the IO protocol, acquires an input of the user, and generates the command;

Send the command to the application module.

Further, the IO interface is a Bluetooth communication interface.

Further, the application module is disposed in a smart card security chip, and the main control module is disposed in the microcontroller.

The invention also provides a smart card, comprising a storage module, a main control module and a computer program stored on the storage module and operable on the main control module, wherein the main control module implements the control of the smart card when the computer program is executed The steps of the method.

Further, it also includes a 7816 interface or an NFC interface for performing normal smart card communication functions.

The present invention also provides a computer readable storage medium having stored thereon a computer program that, when executed by a processor, implements the steps of the above-described method of controlling a smart card.

Beneficial effect

In the smart card and the control method thereof, after the smart card is powered on, the application module performs data interaction with the main control module, and the application module detects a current command protocol type of the command sent by the main control module, and Determining whether the current command protocol type is a preset protocol type; and when determining that the current command protocol type is a preset protocol type, the application module responds to and executes the command sent by the main control module. The application module can determine whether the default protocol type is met by obtaining the current command protocol type, which is equivalent to establishing a direct communication channel between the application module and the main control module, thereby facilitating the application module to use the corresponding application. Handle the corresponding function. In this process, the smart card does not need to be connected to a card reading device such as a card reader, which expands the scope of use of the smart card; for example, the user selects the balance function by the user, and the MCU organizes the inquiry of the balance command to obtain the balance and displays it to the user.

DRAWINGS

1 is a schematic structural diagram of a module of a smart card according to a first embodiment of the present invention;

2 is a flowchart of a method for controlling a smart card in FIG. 1 according to a first embodiment of the present invention;

3 is a flowchart of a method for controlling a smart card in FIG. 1 according to a second embodiment of the present invention;

4 is a sub-flow chart of step S22 in the second embodiment of the present invention;

FIG. 5 is a flowchart of a method for controlling a smart card in FIG. 1 according to a third embodiment of the present invention.

Embodiments of the invention

It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

In the following description, the use of suffixes such as "module", "component" or "unit" for indicating an element is merely an explanation for facilitating the present invention, and has no specific meaning per se. Therefore, "module", "component" or "unit" can be used in combination.

1 to 2, FIG. 1 is a schematic structural diagram of a module of a smart card 100 according to a first embodiment of the present invention, and FIG. 2 is a flowchart of a method for controlling a method 200 of the smart card 100 of FIG.

In this embodiment, the smart card 100 is a Java card that can run a Java Card Applet (JavaCard Applet). The smart card 100 includes a security chip 20 and a microcontroller (Micro Controller Unit (MCU). The microcontroller is provided with a microcontroller. Main control module 10. An application module 21 is run on the security chip 20. The smart card 100 further includes a peripheral device 30 connected to the main control module 10, an IO interface 41 connected to the main control module 10, and a UI interface 42.

The application module 21 is configured to receive a data unit according to an application protocol (Application) The Protocol Data Unit (APDU) command performs the corresponding operation and generates the corresponding processing result.

The smart card 100 may further include an international smart card 7816 communication interface or a near field communication (NFC) interface. Generally, the smart card 100 can communicate with a card reader (not shown) through the 7816 interface or the NFC interface, receive a control command sent by the card reader, and send a corresponding APDU command to the application module 21 according to the control command. The application module 21 performs a corresponding operation according to the received APDU command, thereby implementing a corresponding function.

The peripheral device 30 can include an input device (not labeled) and an output device (not labeled). The input device is configured to respond to a control command input by a user and send the control command to the main control module 10, wherein the input device may be a button, a keyboard, or the like. The output device is configured to output corresponding content according to the control of the main control module 10. The output device may be a peripheral device having an output function of sound, light, etc., such as a display screen or an indicator light.

The IO interface 41 is in communication with the main control module 41, and the IO interface 41 is configured to receive a command sent by the host computer and transmit it to the main control module 10. The IO interface 41 can be a Bluetooth communication interface.

The UI interface 42 is configured to receive a user UI operation command, and parse the operation command and transmit it to the main control module 10.

The smart card control method 200 includes the following steps:

In step S10, the application module receives the command sent by the main control module.

Specifically, the main control module 10 may generate an APDU command according to the preset control protocol according to the received control command, and send an APDU command including the control command to the application module through a corresponding APDU transmission channel. twenty one. The control instruction may be input by the user through the peripheral device 30 (input device), input through the UI interface 42, or may be sent through the IO interface 41.

Step S20, the application module detects a current command protocol type of the command sent by the main control module.

Step S30: Determine whether the current command protocol type is a preset protocol type.

Specifically, the application module 21 determines different response modes by detecting whether the current command protocol type is a preset protocol type. For example, the preset protocol type may correspond to a communication protocol of a current APDU transmission channel between the main control module 10 and the application module 21, and may determine the current APDU by detecting whether the current command protocol type is a preset protocol type. The manner of the type of the transmission channel may determine the transmission source of the APDU command, and determine whether the APDU command is sent by the main control module 10 or the smart card communication interface connected to the application module 21, so that the selection is different according to different transmission sources. The way to respond.

Step S40: When it is determined that the current command protocol type is a preset protocol type, the application module responds to and executes the command sent by the main control module.

Specifically, when it is determined that the current command protocol type is a preset protocol type, for example, when the current command protocol type is determined as a communication protocol of a current APDU transmission channel between the main control module 10 and the application module 21, The application module 21 responds to and executes the command sent by the main control module.

In the control method 200 of the smart card 100 according to the first embodiment of the present invention, after the smart card 100 is powered on, the main control module 10 interacts with the user through the peripheral device 30, the UI interface 42 or the IO interface 41, and accepts a control command input by the user; The application module detects a current command protocol type of the command sent by the main control module, and determines whether the current command protocol type is a preset protocol type; when determining that the current command protocol type is a preset protocol type, The application module responds to and executes a command sent by the main control module. The application module 21 can determine whether the current protocol protocol type is consistent with the preset protocol type, and is equivalent to establishing a direct communication channel between the application module 21 and the main control module 10, thereby facilitating the application module 21 to invoke the corresponding The app to handle the corresponding functionality. In this process, the smart card does not need to be connected to a card reading device such as a card reader, and the scope of use of the smart card 100 is expanded; for example, the user selects a balance check function, and the MCU organizes a query for a balance command to obtain a balance and display it to the user.

Further, please refer to FIG. 3 and FIG. 4, which are flowcharts of a method for controlling a smart card in a second embodiment of the present invention.

In the second embodiment, the application module 21 includes a Java Card virtual machine 22 for defining and normalizing different API interface functions; the API interface provided by the Java Card Virtual Machine 22 can be used to detect the Current command protocol type.

Specifically, step S12 may include: the application module receiving, by the Java card virtual machine, a command sent by the main control module;

Step S22 may include: the Java card virtual machine recording a current command protocol type, so that the application module detects the current command protocol type of the command sent by the main control module.

The Java card virtual machine 22 can extend the APDU.getProtocol interface defined in the standard specification, and add a custom command protocol based on this.

Preferably, in the second embodiment, the application module 21 may further include an applet. twenty three;

Specifically, the step 22 may specifically include:

Step 221: The Java card virtual machine records a current command protocol type.

Step 222: The Java Card virtual machine provides an API for acquiring a current command protocol type.

Step 223, the applet invokes an API provided by the Java card virtual machine to obtain a current command protocol type.

Step S32 may include: determining, by the applet 23, whether the current command protocol type is a preset protocol type;

Step S42 may include: when determining that the current command protocol type is a preset protocol type, the applet 23 executing the command sent by the main control module.

The applet 23 in the application module 21 calls the API interface provided by the Java card virtual machine module 22 to acquire the current command protocol type, so that the application module 21 detects the command sent by the main control module 10. Current command protocol type.

Preferably, in an embodiment, the main control module 10 and the application module 21 are connected by an I2C or SPI interface.

Further, please refer to FIG. 5, which is a flowchart of a method for controlling a smart card in a third embodiment of the present invention, in which steps S10 to S40 and the first method of the smart card control method 203 in the third embodiment are performed. The same is true in the embodiment, and details are not described herein; the difference is that the step 10 includes:

In step S00, the main control module generates a corresponding command in response to the user's input, and sends the command to the application module.

In the control method 203 of the smart card 100 according to the third embodiment of the present invention, the smart card 100 can receive a control command through the IO interface 41, the UI interface 42, or the peripheral device 30, and the main control module 10 generates a corresponding command in response to the user's input. And send the command to the application module 21.

Optionally, in an embodiment, the main control module 10 may include a UI interface 42;

The step S00 may include:

Step S01, the main control module receives a user UI operation command through the UI interface, and parses the operation command to generate the command;

Step S02, the command is sent to the application module.

Optionally, in another embodiment, the main control module 10 may include an IO interface 41;

The step S00 may include:

Step S03, the main control module receives the command sent by the host computer through the IO interface, and parses the command sent by the host computer to acquire the input of the user, and generates the command;

In step S04, the command is sent to the application module.

The IO interface 41 can be a Bluetooth communication interface.

1 to 4, in an embodiment of the present invention, the smart card 100 includes a storage module 50 and a computer program stored on the storage module 50 and operable on the main control module 10, the main control module 10 executes The computer program implements the steps of the control method of the smart card 100 described in any of the above embodiments.

Specifically, when the main control module 10 executes the computer program, the following steps are implemented:

Step S10, the application module 21 receives the command sent by the main control module 10;

Step S20, the application module 21 detects a current command protocol type of the command sent by the main control module 10;

Step S40: The application module 21 responds to and executes the command sent by the main control module 10 when determining that the current command protocol type is a preset protocol type.

In the smart card 100 of the present invention, after the smart card 100 is powered on, the main control module 10 interacts with the user through the peripheral device 30, the UI interface 42 or the IO interface 41, and accepts a control command input by the user; the application module detects the The current command protocol type of the command sent by the main control module, and determining whether the current command protocol type is a preset protocol type; when determining that the current command protocol type is a preset protocol type, the application module responds and Execute the command sent by the main control module. The application module 21 can determine whether the current protocol protocol type is consistent with the preset protocol type, and is equivalent to establishing a direct communication channel between the application module 21 and the main control module 10, thereby facilitating the application module 21 to invoke the corresponding The app to handle the corresponding functionality. In this process, the smart card does not need to be connected to a card reading device such as a card reader, and the scope of use of the smart card 100 is expanded; for example, the user selects a balance check function, and the MCU organizes a query for a balance command to obtain a balance and display it to the user.

Further, the application module 21 includes a Java Card virtual machine 22 for defining and normalizing different API interface functions; the current command protocol type can be recorded by calling an API interface provided by the Java Card Virtual Machine 22.

Specifically, the step S12 may include: the application module receiving, by the Java card virtual machine, a command sent by the main control module;

The step S22 may include: the Java card virtual machine recording a current command protocol type, so that the application module detects the current command protocol type of the command sent by the main control module.

Further, the application module 21 may further include an Applet 23;

Specifically, the step 22 may specifically include:

Step 221, the current command protocol type recorded by the Java card virtual machine;

Step S32 may include: the applet 23 acquires a current command protocol type according to an API provided by the Java card virtual machine, and determines whether the current command protocol type is a preset protocol type; and the step S42 may include: determining the current When the command protocol type is a preset protocol type, the applet 23 responds and executes the command sent by the main control module.

Preferably, in an embodiment, the application module 21 of the main control module 10 is connected through an I2C or SPI interface.

Further, when the main control module 10 executes the computer program:

Before the step 10, the method includes:

The step S00 may include:

Step S02, the command is sent to the application module.

The step S00 may include:

Step S03, the main control module receives the command sent by the host computer through the IO interface, and parses the IO protocol, acquires the input of the user, and generates the command;

In step S04, the command is sent to the application module.

Optionally, wherein the IO interface 41 can be a Bluetooth communication interface.

Optionally, the smart card 100 further includes a 7816 interface or an NFC interface for performing a normal smart card communication function. Generally, the smart card 100 can communicate with a card reader (not shown) through the 7816 interface or the NFC interface, receive a control command sent by the card reader, and send a corresponding APDU command to the application module 21 according to the control command. The application module 21 performs a corresponding operation according to the received APDU command, thereby implementing a corresponding function.

The present invention also provides a computer readable storage medium having stored thereon a computer program that, when executed by a processor, implements the steps of a method of controlling a smart card in any of the above embodiments.

In the description of the present specification, the descriptions of the terms "one embodiment", "another embodiment", "other embodiment", or "first embodiment to an Xth embodiment", etc. are meant to be combined with the embodiment or The specific features, structures, materials, or characteristics described in the examples are included in at least one embodiment or example of the invention. In the present specification, the schematic representation of the above terms does not necessarily mean the same embodiment or example. Furthermore, the particular features, structures, materials, method steps or features described may be combined in a suitable manner in any one or more embodiments or examples.

It is to be understood that the term "comprises", "comprising", or any other variants thereof, is intended to encompass a non-exclusive inclusion, such that a process, method, article, or device comprising a series of elements includes those elements. It also includes other elements that are not explicitly listed, or elements that are inherent to such a process, method, article, 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.

The serial numbers of the embodiments of the present invention are merely for the description, and do not represent the advantages and disadvantages of the embodiments.

Through the description of the above embodiments, those skilled in the art can clearly understand that the foregoing embodiment method can be implemented by means of software plus a necessary general hardware platform, and of course, can also be through hardware, but in many cases, the former is better. Implementation. Based on such understanding, the technical solution of the present invention, which is essential or contributes to the prior art, may be embodied in the form of a software product stored in a storage medium (such as ROM/RAM, disk, The optical disc includes a number of instructions for causing a terminal (which may be a cell phone, a computer, a server, an air conditioner, or a network device, etc.) to perform the methods described in various embodiments of the present invention.

The embodiments of the present invention have been described above with reference to the drawings, but the present invention is not limited to the specific embodiments described above, and the specific embodiments described above are merely illustrative and not restrictive, and those skilled in the art In the light of the present invention, many forms may be made without departing from the spirit and scope of the invention as claimed.

Claims

A smart card control method is performed by the smart card, wherein the smart card includes an application module and a main control module, and the method includes the following steps:

The application module receives a command sent by the main control module;

The application module detects a current command protocol type of a command sent by the main control module;

Determining whether the current command protocol type is a preset protocol type;

When it is determined that the current command protocol type is the preset protocol type, the application module executes a command sent by the main control module.
The method for controlling a smart card according to claim 1, wherein the application module comprises a Java Card virtual machine;

The step of the application module receiving the command sent by the main control module includes:

The application module receives a command sent by the main control module through the Java Card virtual machine.
The method for controlling a smart card according to claim 2, wherein the step of detecting, by the application module, the current command protocol type of the command sent by the main control module comprises:

The Java card virtual machine records a current command protocol type to cause the application module to detect the current command protocol type of the command sent by the main control module.
The method of controlling a smart card according to claim 2, wherein the application module further comprises an applet;

The step of the application module detecting the current command protocol type of the command sent by the main control module includes:

The Java card virtual machine records a current command protocol type;

The Java Card virtual machine provides an API for obtaining a current command protocol type;

The applet invokes an API provided by the Java Card virtual machine to obtain a current command protocol type.
A method of controlling a smart card according to claim 4, wherein

The step of determining whether the current command protocol type is a preset protocol type includes:

Determining, by the applet, whether the current command protocol type is a preset protocol type;

When the determining that the current command protocol type is a preset protocol type, the step of the application module responding to and executing the command sent by the main control module includes:

When the applet determines that the current command protocol type is a preset protocol type, the applet executes a command sent by the main control module.
The method of controlling a smart card according to claim 1, wherein the main control module and the application module are connected through an I2C or SPI interface.
The method for controlling a smart card according to claim 1, wherein the command sent by the main control module comprises an APDU command.
The method for controlling a smart card according to claim 1, wherein the preset protocol type is a communication protocol of a current APDU transmission channel between the main control module and the application module.
The method for controlling a smart card according to claim 1, wherein the step of the application module receiving the command sent by the main control module further comprises:

The main control module generates a corresponding command in response to the user's input and sends the command to the application module.
The smart card control method according to claim 6, wherein the smart card comprises a UI interface;

The step of the main control module responding to the user's input, generating the corresponding command, and sending the command to the application module includes:

The main control module receives a user UI operation instruction through the UI interface, and parses the operation command to generate the command;

Send the command to the application module.
The smart card control method according to claim 10, wherein the smart card comprises an IO interface;

The step of the main control module responding to the user's input, generating the corresponding command, and sending the command to the application module includes:

The main control module receives an instruction sent by the host computer through the IO interface, and parses the IO protocol, acquires an input of the user, and generates the command;

Send the command to the application module.
The method of controlling a smart card according to claim 11, wherein the IO interface is a Bluetooth communication interface.
The method of controlling a smart card according to claim 1, wherein the application module is disposed in a smart card security chip, and the main control module is disposed in the microcontroller.
A smart card comprising a storage module, a main control module, and a computer program stored on the storage module and operable on the main control module, wherein the main control module executes the computer program as claimed in claim 1 The step of the control method of the smart card according to any one of the preceding claims.
The smart card of claim 14 further comprising a 7816 interface or an NFC interface.
A computer readable storage medium having stored thereon a computer program, characterized in that the computer program is executed by a processor to implement the steps of the control method of the smart card according to any one of claims 1 to 13.