CN101169815A - Computer system and data input method - Google Patents

Abstract

The invention discloses a computer system, comprising: a data input device for inputting data; a transmission control unit for entering a non-encrypted transmission mode when receiving non-encrypted transmission mode instruction information, and inputting the data into the device The input data is transmitted to the application program interface, and when the encryption transmission mode instruction information is received, and the encryption transmission mode is entered, the data input by the data input unit is transmitted to the data encryption unit; the data encryption unit is used to encrypt data from The data of the transmission control unit is encrypted; the application program interface is used to send the data from the transmission control unit or the encrypted data from the data encryption unit to the corresponding application program. In addition, the invention also discloses a Data entry method.

Description

Computer system and data input method

technical field

The invention relates to the field of computers, in particular to a computer system and a data input method.

Background technique

With the rapid development of computers and Internet technologies, more and more computer-aided applications are used to execute important business applications, such as Internet banking and home transaction services (HTTS). However, such computer-based business applications can be maliciously exploited by logging software or keyloggers, which capture, record, and send cleartext data entered by the user from the keyboard input driver-to-application interface to identity thieves, similar to Spyware such as Trojan horse virus, backdoor virus, etc. have brought serious threats to user data security.

In the prior art, in some applications with high security requirements (such as automatic teller machines, etc.), an encrypted keyboard can be used to input data. The system using an encrypted keyboard is a dedicated system, which uses a special keyboard to encrypt the data entered by the user and then sends it to the application program through the keyboard driver. The application program decrypts the data entered by the user according to the built-in decryption algorithm and decryption key, and then completes Follow-up business processing.

The encryption keyboard of the prior art can only be used in specific applications, such as when being applied to a system requiring higher versatility such as a personal computer, which will cause most legal application programs to The corresponding decryption algorithm and decryption key cause legitimate applications to be unable to obtain the input data that is really needed (when applied to a personal computer, most of the common operations of the user do not require encryption), resulting in poor system compatibility.

Contents of the invention

In view of this, the technical problem to be solved by the embodiments of the present invention is to provide a computer system and a data input method, which can ensure that the user can input private data (such as user names and login password data of Internet banking and home transaction services) Security, but also to ensure the computer system's compatibility with legitimate common applications.

A kind of computer system of the embodiment of the present invention, comprises:

data input means for inputting data;

The transmission control unit is configured to enter the non-encrypted transmission mode when receiving the non-encrypted transmission mode indication information, transmit the data input by the data input device to the application program interface, and enter the encryption mode when receiving the encrypted transmission mode indication information In the transmission mode, the data input by the data input unit is transmitted to the data encryption unit;

a data encryption unit, configured to encrypt data from the transmission control unit;

The application program interface is used to send the data from the transmission control unit or the encrypted data from the data encryption unit to a corresponding application program.

A data input method according to an embodiment of the present invention, comprising:

When receiving the non-encrypted transmission mode instruction information, start the non-encrypted transmission mode, and transmit the data input by the data input device to the corresponding application program through the application program interface;

When receiving the encrypted transmission mode instruction information, start the encrypted transmission mode, encrypt the data input by the data input device, and transmit the encrypted encrypted data to the corresponding application program through the application program interface.

Implementing a computer system and a data input method according to an embodiment of the present invention, by setting two transmission modes of encryption and non-encryption in the data input driver or data input device, when the user needs to perform some private data with higher security requirements When inputting operations (such as Internet banking and home transaction services such as user names and login password data), receive encrypted transmission mode instruction information, start the encrypted transmission mode, encrypt the private data entered by the user, and send the encrypted data to the corresponding A specific application program, and then the specific application program completes the decryption of the data, ensuring the security of the system. When the user needs to perform ordinary data input operations, the receiver selects the non-encrypted transmission mode to directly transmit the data input by the user to the corresponding Legitimate applications ensure the compatibility of computer systems with legitimate common applications.

Description of drawings

Fig. 1 is a schematic diagram of the composition of the first embodiment of the computer system of the present invention;

Fig. 2 is a schematic composition diagram of the second embodiment of the computer system of the present invention;

3 is a schematic flow chart of the first embodiment of the data input method of the present invention;

Fig. 4 is a schematic flow chart of the second embodiment of the data input method of the present invention;

Fig. 5 is a schematic flow chart of the third embodiment of the data input method of the present invention;

Fig. 6 is a schematic flowchart of the fourth embodiment of the data input method of the present invention.

Detailed ways

In order to make the technical solutions and advantages of the present invention clearer, the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings.

Referring to FIG. 1 , it is a schematic composition diagram of the first embodiment of the computer system of the present invention. As shown in the figure, the computer system described in this embodiment mainly includes a data input device 11, a drive interface 121, a transmission control unit 122, a data encryption unit 123, and an application program interface 124. Each unit is described in detail below:

The data input device 11 is used for inputting data.

Here, the data input device 11 is not specifically limited, but may generally represent a user data input device that receives data from a system user. For example, as the data input device 11, a keyboard, a numeric keypad, a mouse, a joystick, etc. can be used, preferably a keyboard capable of inputting a relatively large amount of information and widely used in personal computers and the like can be used.

The drive interface 121 is used to transmit the data input by the data input device 11 to the data transmission control unit 122 .

The transmission control unit 122 is configured to enter the non-encrypted transmission mode when receiving the non-encrypted transmission mode instruction information, and transmit the data input by the data input device 11 to the application program interface 124. When receiving the encrypted transmission mode instruction information, , enter the encryption transmission mode, and transmit the data input by the data input unit 11 to the data encryption unit 123 .

During specific implementation, there are two ways to instruct the transmission control unit 122 to enter the non-encrypted transmission mode. The unencrypted transmission mode indication information of the encrypted transmission mode, when the transmission control unit 122 receives the unencrypted transmission mode indication information, enters the unencrypted transmission mode. For example, when the user exits a certain bank login program, the application program notifies the transmission control unit 122 to enter the non-encrypted transmission mode. Another implementation is that the data input device 11 sends to the transmission control unit 122 unencrypted transmission mode indication information for instructing the transmission control unit 122 to enter the unencrypted transmission mode, when the transmission control unit 122 receives The non-encrypted transmission mode indication information enters the non-encrypted transmission mode. For example, a key can be set on the keyboard, through which the user can send non-encrypted transmission mode indication information to the transmission control unit 122, and notify the transmission control unit 122 to enter the non-encrypted transmission mode.

Correspondingly, during specific implementation, there are two implementations for instructing the transmission control unit 122 to enter the encrypted transmission mode, one of which is that the application program sends an instruction to the transmission control unit 122 to the transmission control unit 122 through the application program interface. Encrypted transmission mode indication information for entering the encrypted transmission mode, when the transmission control unit 122 receives the encrypted transmission mode indication information, enters the encrypted transmission mode. For example, when the user exits a certain bank login program, the application program notifies the transmission control unit 122 to enter the non-encrypted transmission mode. Another implementation is that the data input device 11 sends to the transmission control unit 122 encrypted transmission mode indication information for instructing the transmission control unit 122 to enter the encrypted transmission mode, when the transmission control unit 122 receives the Encrypted transmission mode instruction information, enter encrypted transmission mode. For example, a key can be set on the keyboard, through which the user can send encrypted transmission mode indication information to the transmission control unit 122, and notify the transmission control unit 122 to enter the encrypted transmission mode.

The data encryption unit 123 is configured to encrypt the data from the transmission control unit 122 . Here, the encryption algorithm selection and encryption key selection used by the data encryption unit 123 for encryption are not specifically limited in the present invention, and any conventional excellent algorithm or even new algorithms that may appear in the future can be considered for application here. During specific implementation, when considering specific applications, different encryption algorithms and encryption keys are generally set for different application objects that require secure encrypted input to encrypt corresponding user input. For this reason, the data encryption unit 123 needs to be based on Different application program objects select different encryption algorithms and encryption keys. For this reason, during specific implementation, the data encryption unit 123 mainly includes:

The selection unit 1231 is configured to select an encryption algorithm and an encryption key for encrypting data from the transmission control unit 122 .

The data encryption execution unit 1232 is configured to encrypt the data from the transmission control unit according to the encryption algorithm and the encryption key selected by the selection unit 1231 .

Here, during specific implementation, corresponding to the implementation of triggering entry into the encrypted transmission mode through the application program by sending the encrypted transmission mode indication information, the encrypted transmission mode indication information may further include instructions for indicating which encryption algorithm to specifically select And the information of the encryption key, the selection unit 1231 can select the corresponding encryption algorithm and the encryption key according to the information, of course, this is only an example description.

The application program interface 124 sends the data from the transmission control unit 122 or the encrypted data from the data encryption unit 123 to a corresponding application program.

Here, the application program interface 124 is a communication interface between the data input driver 12 and various application programs. Stealing the confidential data input by the user, and when the embodiment of the present invention is in the encrypted transmission mode, the data sent by the application program interface 124 to the corresponding application program is encrypted ciphertext data, even if the illegal application program obtains the ciphertext data If you do not know the corresponding decryption algorithm and decryption key, you cannot obtain the corresponding confidential data.

In the embodiment of the present invention, in the encrypted transmission mode, in order to obtain the corresponding data information from the ciphertext data from the application program interface 124, that is, the decrypted plaintext data, a legitimate application program needs to have a corresponding decryption unit built into the application program. , that is, use the decryption algorithm and decryption key corresponding to the encryption algorithm and encryption key used when the data encryption unit 123 encrypts the data input by the user.

In the above first embodiment of the computer system of the present invention, during specific implementation, the drive interface 121, the transmission control unit 122, the data encryption unit 123 and the application program interface 124 together form the keyboard drive part, through the above-mentioned computer system of the present invention It can be seen from the description of the first embodiment that in this embodiment, two transmission modes, the non-encrypted transmission mode and the encrypted transmission mode are set in the data transmission control unit, and when the data transmission control unit receives the non-encrypted transmission mode instruction information, it enters the non-encrypted transmission mode. mode, the data input by the data input device is directly transmitted to the corresponding application program through the application program interface, and when the data transmission control unit receives the encrypted transmission mode indication information, it enters the encrypted transmission mode and transmits the data input by the data input device to the Encryption unit, and after data encryption is performed by the data encryption unit, the encrypted data is transmitted to the corresponding application program through the application program. For this reason, the encrypted transmission of the password and other private data (such as the bank login password) entered by the user is realized. In this way, even if an illegal application program (such as a Trojan virus) obtains the encrypted data, it will not be able to obtain the corresponding plaintext data because there is no corresponding decryption algorithm and decryption key, and the system security is improved. The non-private data is transmitted in a non-encrypted transmission mode, so that any legitimate ordinary application can normally obtain the data input by the user, which improves system compatibility.

Referring to FIG. 2 , it is a schematic composition diagram of the second embodiment of the computer system of the present invention. As shown in the figure, the computer system described in this embodiment mainly includes a data input device 211, a transmission control unit 212, a data encryption unit 213, a driver interface 214, and an application program interface 22. Each unit is described in detail below:

The data input device 211 is used for inputting data.

The transmission control unit 122 is configured to enter the non-encrypted transmission mode when receiving the non-encrypted transmission mode instruction information, and transmit the data input by the data input device 11 to the application program interface 124. When receiving the encrypted transmission mode instruction information, , enter the encryption transmission mode, and transmit the data input by the data input unit 11 to the data encryption unit 123 .

Here, similar to that described in the first embodiment of the computer system of the present invention, during specific implementation, there are two ways to instruct the transmission control unit 212 to enter the non-encrypted transmission mode, one of which is that the application program passes the application The program interface sends to the transmission control unit 212 non-encrypted transmission mode instruction information for instructing the transmission control unit 212 to enter the non-encrypted transmission mode, and when the transmission control unit 212 receives the non-encrypted transmission mode instruction information, it enters the non-encrypted transmission mode . For example, when the user exits a certain bank login program, the application program notifies the transmission control unit 212 to enter the non-encrypted transmission mode. Another implementation is that the data input device 211 sends to the transmission control unit 212 unencrypted transmission mode indication information for instructing the transmission control unit 212 to enter the unencrypted transmission mode, when the transmission control unit 212 receives The non-encrypted transmission mode indication information enters the non-encrypted transmission mode. For example, a key can be set on the keyboard, through which the user can send non-encrypted transmission mode indication information to the transmission control unit 212, and notify the transmission control unit 212 to enter the non-encrypted transmission mode.

Correspondingly, during specific implementation, there are two implementations for instructing the transmission control unit 212 to enter the encrypted transmission mode, one of which is that the application program sends an instruction to the transmission control unit 212 to the transmission control unit 212 through the application program interface. Encrypted transmission mode indication information for entering the encrypted transmission mode, when the transmission control unit 212 receives the encrypted transmission mode indication information, enters the encrypted transmission mode. For example, when the user exits a certain bank login program, the application program notifies the transmission control unit 212 to enter the non-encrypted transmission mode. Another implementation is that the data input device 211 sends to the transmission control unit 212 encrypted transmission mode indication information for instructing the transmission control unit 212 to enter the encrypted transmission mode, when the transmission control unit 212 receives the Encrypted transmission mode instruction information, enter encrypted transmission mode. For example, a key can be set on the keyboard, through which the user can send encrypted transmission mode instruction information to the transmission control unit 212, and notify the transmission control unit 212 to enter the encrypted transmission mode.

A data encryption unit 213, configured to encrypt data from the transmission control unit 212. Here, the encryption algorithm selection and encryption key selection used by the data encryption unit 213 for encryption are not specifically limited in the present invention, and any conventional excellent algorithm or even new algorithms that may appear in the future can be considered for application here. During specific implementation, when considering specific applications, different encryption algorithms and encryption keys are generally set for different application objects that require secure encrypted input to encrypt corresponding user input. For this reason, the data encryption unit 213 needs to be based on Different application program objects select different encryption algorithms and encryption keys. For this reason, during specific implementation, the data encryption unit 213 mainly includes:

The selection unit 2131 is configured to select an encryption algorithm and an encryption key for encrypting data from the transmission control unit 212 .

The data encryption execution unit 2132 is configured to encrypt the data from the transmission control unit according to the encryption algorithm and the encryption key selected by the selection unit 2131 .

Here, during specific implementation, corresponding to the implementation of triggering entry into the encrypted transmission mode through the application program by sending the encrypted transmission mode indication information, the encrypted transmission mode indication information may further include instructions for indicating which encryption algorithm to specifically select And the information of the encryption key, the selection unit 2231 can select the corresponding encryption algorithm and the encryption key according to the information, of course, this is only an example description.

The driver interface 214 is configured to transmit the confidential data from the transmission control unit 212 or the data encryption unit 213 to an application program interface.

The application program interface 22 is used to transmit the data from the drive interface to the corresponding application program.

In order to facilitate technical personnel to implement this embodiment, the computer system described in this embodiment is applied to a personal computer as an example to describe various key components and key points different from the prior art. Such similar descriptions should not It is regarded as limiting the protection scope of the present invention. When this implementation is applied to a personal computer, the data input device 211 can correspond to a keyboard part, and the functions of the driver interface 214 and the application program interface 22 are basically the same as the main functions of the keyboard driver part in the prior art. The keyboard is an information interaction interface with various application programs. The key improvement point of this embodiment is that a transmission control unit 212 and a data encryption unit 213 are added to the keyboard. The transmission control unit 212 and the data encryption unit 213 can be realized based on an MCU microprocessor, and a or multiple key combinations are used to control the transmission control unit 212, so that it can switch between encrypted transmission mode and non-encrypted transmission mode, and further select a corresponding algorithm and encryption key when encrypting. In addition, in order to increase the convenience of operation, when starting an application program object that requires encrypted transmission mode input, the application program can send instruction information and send it to the transmission control unit 212 through the driver interface 214 to instruct the transmission control unit 213 to operate in encrypted transmission mode. When switching between non-encrypted and non-encrypted transmission modes and in encrypted transmission mode, select the corresponding algorithm and encryption key. When in the non-encrypted transmission mode, the transmission control unit 212 directly transmits the data input by the user to the communication interface 214. At this time, the user's data input is almost the same as the existing common keyboard data input, so that any legal common application The program can normally obtain the data input by the user, which improves the system compatibility.

Referring to FIG. 3 , it is a schematic flowchart of the first embodiment of the data input method of the present invention. In this embodiment, the application program triggers the switching between the encrypted transmission mode and the non-encrypted transmission mode, and the data input driver (corresponding to the keyboard drive part) completes the encryption of the input data, and the application program completes the decryption of the input data. The key used for encryption/decryption can be built-in by data input driver, application program (for example, the key is set before leaving the factory). Below in conjunction with accompanying drawing 3, the implementation process of this embodiment is described in detail, and the specific implementation process of this embodiment is as follows:

Step 301 , the application program sends encrypted transmission mode instruction information to the data input driver for instructing the data input driver to enter the encryption mode, and the data driver switches to the encrypted transmission mode after receiving the encrypted transmission mode instruction information.

Here, further, the encryption transmission mode indication information may also include information indicating which encryption algorithm and encryption key to specifically select.

Step 302, the user inputs plaintext data through the data input device.

Step 303, the data input driver encrypts the plaintext data from the data input device to generate encrypted ciphertext data.

Step 304, the data input driver sends the encrypted ciphertext data to the application program.

Step 305, the application program decrypts the ciphertext data from the data driver.

Step 306, after the data input that needs to be encrypted is completed, the application program sends to the data input driver the non-encrypted transmission mode indication information for instructing the data input driver to enter the non-encrypted transmission mode, and the data driver receives the non-encrypted After the transmission mode instruction message, switch to non-encrypted transmission mode.

Step 307, the user inputs plaintext data through the data input device.

Step 308, the data input driver transmits the plaintext data from the data input device to the application program.

Referring to FIG. 4 , it is a schematic flowchart of the second embodiment of the data input method of the present invention. In this embodiment, the user inputs instruction information to the data input device to trigger the switching of the encrypted transmission mode and the non-encrypted transmission mode, and the data input driver (corresponding to the keyboard driver part) completes the encryption of the input data, and completes the encryption of the input data by the application program decrypt. The key used for encryption/decryption can be built-in by data input driver, application program (for example, the key is set before leaving the factory). Below in conjunction with accompanying drawing 4, the implementation process of this embodiment is described in detail, and the specific implementation process of this embodiment is as follows:

Step 401, the data input device sends encrypted transmission mode instruction information input by the user to the data input driver for instructing the data input driver to enter the encrypted transmission mode, and the data driver receives the encrypted transmission mode instruction information After that, switch to encrypted transmission mode.

Here, further, the encryption transmission mode indication information may also include information indicating which encryption algorithm and encryption key to specifically select. In a specific embodiment, in order to facilitate the user's input operation, a corresponding display interface may be provided for the user to select a mode and further select a corresponding encryption algorithm when selecting an encrypted transmission mode.

Step 402, the user inputs plaintext data through the data input device.

Step 403, the data input driver encrypts the plaintext data from the data input device to generate encrypted ciphertext data.

Step 404, the data input driver sends the encrypted ciphertext data to the application program.

Step 405, the application decrypts the ciphertext data from the data driver.

Step 406, after the data input that needs to be encrypted is completed, the data input device sends the unencrypted transmission mode indication information input by the user to the data input driver to instruct the data input driver to enter the unencrypted transmission mode, and the data driver receives After receiving the non-encrypted transmission mode indication information, switch to the non-encrypted transmission mode.

Step 407, the user inputs plaintext data through the data input device.

Step 408, the data input driver transmits the plaintext data from the data input device to the application program.

Referring to FIG. 5 , it is a schematic flowchart of a third embodiment of the data input method of the present invention. In this embodiment, the application triggers the switching between the encrypted transmission mode and the non-encrypted transmission mode, the data input device (corresponding to the keyboard part) completes the encryption of the input data, and the application program completes the decryption of the input data. The key used for encryption/decryption can be built-in by the data input device or the application program (for example, the key is set before leaving the factory). Below in conjunction with accompanying drawing 5, the implementation process of this embodiment is described in detail, and the specific implementation process of this embodiment is as follows:

Step 501, the application program sends encrypted transmission mode instruction information to the data input driver for instructing the data input device to enter the encrypted transmission mode.

Step 502, the data input driver transmits the encrypted transmission mode indication information from the application program to the data input device, and the data input device switches to the encrypted transmission mode after receiving the encrypted transmission mode indication information.

Here, further, the encryption transmission mode indication information may also include information indicating which encryption algorithm and encryption key to specifically select.

Step 503, the data input device encrypts the plaintext data input by the user to generate encrypted ciphertext data.

Step 504, the data input device transmits the encrypted ciphertext data to the data input driver.

Step 505, the data input driver sends the encrypted ciphertext data to the application program.

Step 506, the application program decrypts the ciphertext data from the data driver.

Step 507, after the data that needs to be encrypted is input, the application program sends unencrypted transmission mode indication information for instructing the data input device to enter the unencrypted transmission mode to the data input driver.

Step 508, the data input driver transmits the non-encrypted transmission mode indication information to the data input device, and the data driver switches to the non-encrypted transmission mode after receiving the non-encrypted transmission mode indication information.

Step 509, the user inputs plaintext data through the data input device.

In step 510, the data input driver transmits the plaintext data from the data input device to the application program.

Referring to FIG. 6 , it is a schematic flowchart of a fourth embodiment of the data input method of the present invention. In this embodiment, the user inputs instruction information to the data input device to trigger the switching between the encrypted transmission mode and the non-encrypted transmission mode, and the data input device (corresponding to the keyboard part) completes the encryption of the input data, and the application program completes the decryption of the input data . The key used for encryption/decryption can be built-in by the data input device or the application program (for example, the key is set before leaving the factory). Below in conjunction with accompanying drawing 6, the implementation process of this embodiment is described in detail, and the specific implementation process of this embodiment is as follows:

Step 601, the user inputs encrypted transmission mode instruction information for instructing the data input device to enter the encrypted transmission mode into the data input device, and the data input device switches to the encrypted transmission mode.

Here, further, the encryption transmission mode indication information may also include information indicating which encryption algorithm and encryption key to specifically select. In a specific embodiment, in order to facilitate the user's input operation, a corresponding display interface may be provided for the user to select a mode and further select a corresponding encryption algorithm when selecting an encrypted transmission mode.

In step 602, the user inputs plaintext data, and the data input device encrypts the plaintext input by the user to generate encrypted plaintext data.

Step 603, the data input device transmits the encrypted ciphertext data to the data input driver.

Step 604, the data input driver sends the encrypted ciphertext data to the application program.

Step 605, the application decrypts the ciphertext data from the data driver.

Step 606, after the data to be encrypted is input, the user inputs to the data input device unencrypted transmission mode indication information for instructing the data input device to enter the unencrypted transmission mode, and the data input device enters the unencrypted transmission mode.

Step 607, the user inputs plaintext data through the data input device.

Step 608, the data input driver transmits the plaintext data from the data input device to the application program.

The above is only a preferred embodiment of the present invention, it should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, some improvements and modifications can also be made, and these improvements and modifications should also be It is regarded as the protection scope of the present invention.

Claims (10)

1. A computer system, characterized in that, comprises a data input device, a transmission control unit, a data encryption unit and an application program interface, wherein: data input means for inputting data; The transmission control unit is configured to enter the non-encrypted transmission mode when receiving the non-encrypted transmission mode indication information, transmit the data input by the data input device to the application program interface, and enter the encryption mode when receiving the encrypted transmission mode indication information In the transmission mode, the data input by the data input unit is transmitted to the data encryption unit; a data encryption unit, configured to encrypt data from the transmission control unit; The application program interface is used to send the data from the transmission control unit or the encrypted data from the data encryption unit to a corresponding application program. 2. The computer system according to claim 1, wherein the data encryption unit comprises: a selection unit for selecting an encryption algorithm and an encryption key for encrypting data from the transmission control unit; A data encryption execution unit, configured to encrypt the data from the transmission control unit according to the encryption algorithm and the encryption key selected by the selection unit. 3. The computer system according to claim 1 or 2, further comprising: The drive interface is used to transmit the data input by the data input device to the data transmission control unit. 4. The computer system according to claim 1 or 2, further comprising: A driver interface, configured to transmit data encrypted by the transmission control unit or the data encryption unit to the application program interface. 5. The computer system according to claim 4, wherein the data input device, the transmission control unit and the data encryption unit are arranged in a computer keyboard. 6. A data input method, characterized in that: When receiving the non-encrypted transmission mode instruction information, start the non-encrypted transmission mode, and transmit the data input by the data input device to the corresponding application program through the application program interface; When receiving the encrypted transmission mode instruction information, start the encrypted transmission mode, encrypt the data input by the data input device, and transmit the encrypted encrypted data to the corresponding application program through the application program interface. 7. The method according to claim 6, characterized in that, when the non-encrypted transmission mode instruction information is received, the non-encrypted transmission mode is started, and the data input by the data input device is transmitted to the corresponding application through the application program interface The specific steps of the procedure are: The application program indicates information in the non-encrypted transmission mode through the application program interface; When receiving the non-encrypted transmission mode indication information, start the non-encrypted transmission mode, and transmit the data input by the data input device to the corresponding application program through the application program interface. 8. The method according to claim 6 or 7, wherein when receiving the encrypted transmission mode instruction information, the encrypted transmission mode is started, the data input by the data input device is encrypted, and the encrypted encrypted data is encrypted. The specific steps for transferring data to the corresponding application program through the application program interface are as follows: The application program sends encrypted transmission mode indication information through the application program interface; When receiving the encrypted transmission mode instruction information, start the encrypted transmission mode, encrypt the data input by the data input device, and transmit the encrypted encrypted data to the corresponding application program through the application program interface. 9. The method according to claim 6, characterized in that, when the non-encrypted transmission mode indication information is received, the non-encrypted transmission mode is started, and the data input by the data input device is transmitted to the corresponding application through the application program interface The specific steps of the procedure are: Inputting non-encrypted transmission mode instruction information through the data input device; When receiving the non-encrypted transmission mode indication information, start the non-encrypted transmission mode, and transmit the data input by the data input device to the corresponding application program through the application program interface. 10. The method according to claim 6 or 9, wherein when receiving the encrypted transmission mode indication information, the encrypted transmission mode is started, the data input by the data input device is encrypted, and the encrypted encrypted The specific steps for transferring data to the corresponding application program through the application program interface are as follows: input encrypted transmission mode instruction information through the data input device; When receiving the encrypted transmission mode instruction information, start the encrypted transmission mode, encrypt the data input by the data input device, and transmit the encrypted encrypted data to the corresponding application program through the application program interface.

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