Abstract: The present application provides a method for battery charge management, which includes: acquiring current time and historical power supply data when a preset condition for switching a charge mode of a battery is met; determining a corresponding predicted charge mode according to the historical power supply data; and updating a current charge mode of the terminal according to the predicted charge mode. The method for battery charge management can reasonably predict the power supply situation of the terminal at the current time based on the historical power supply data that can characterize usage habits of a user.

Abstract: The present application belongs to the technical field of circuits. Disclosed are a card-reading circuit, a card reader, and a card-reading system. The card-reading circuit comprises a connection module and a communication control module. The connection module comprises a first connection unit and a second connection unit, and the communication control module comprises a first communication control unit and a second communication control unit. The first communication control unit is connected between a second end of the first connection unit and a reading end of a central processing unit, and the second communication control unit is connected between a second end of the second connection unit and the reading end of the central processing unit. At the same moment, one of the first communication control unit and the second communication control unit is operating.

Abstract: A method and an apparatus for operating an application program, a terminal device, and a storage medium. The method includes: determining a target version from multiple versions of the application program, and determining first parameter information of the application program of the target version; obtaining second parameter information of the application program transmitted by a bootloader; calculating a target memory address of an executed target element of the script file in the application program of the target version according to the first parameter information and the second parameter information; operating the target element of the script file in the target memory address. By applying the method, the application program can still be normally operated even though an actual operation address of the application program in the terminal device is different from a designated chained address when the application program is linked.

Abstract: A method for operating a second system application in a first system is provided. The method includes: creating an operating environment of the second system application through a loader on a target terminal; generating an application function component of the second system application in the loader; compiling script files of the second system application into dynamic library files by utilizing the compiling environment supported by the target terminal, and encapsulating the dynamic library files into an application package; installing the application package through the loader, and operating the dynamic library files in the application package under the operating environment. According to the aforesaid method, the target terminal can directly respond to a system instruction generated during execution of the compiled dynamic library files without the need of parsing and converting the system instruction, thus, a cross-platform operation efficiency of the application program can be improved.

Abstract: A method and an apparatus for custom development of a payment application, a computer equipment and a storage medium. The method includes: acquiring a resource file uploaded by a user terminal to an application market server through an application market client; writing the resource file into a device operation service; acquiring the resource file from the device operation service through a device operation interface, and saving the same in a storage space of an application; and loading the resource file saved in the storage space of the application through the application, and executing a function of the resource file.

Abstract: The present application provides methods for downloading a key, a client, a password device, and a terminal device, in which, the client sends a request for downloading an initial key to a backend server, and receives a server identity certificate delivered by the backend server and forwards the server identity certificate to the password device. The client acquires a device identity ciphertext returned by the password device and sends the device identity ciphertext to the backend server. The client acquires a server identity ciphertext and an initial key ciphertext generated by the backend server, and sends the server identity ciphertext to the password device. After the password device successfully verifies an identity of the backend server, the client sends the initial key ciphertext to the password device.

Abstract: The present application provides a method for implementing a middleware based on EMV, a terminal device, and a computer-readable storage medium. The method includes: establishing a middleware based on EMV L2, wherein the middleware provides a first interface for an upper-layer application of the terminal device to call; after the middleware receives a calling request for the first interface sent by the upper-layer application according to detected information of a IC card, calling an interface of an Entry library according to the calling request to obtain a return result of the Entry library, wherein the return result of the Entry library comprises an application identifier of the IC card; and determining an EMV L2 library matching the IC card based on the application identifier, and calling an interface of the EMV L2 library matching the IC card, to complete a contactless process with the IC card.

Abstract: The present solution provides a method for card reading, the method includes: turning on a read head of the magnetic stripe card, a read head of the contact IC card, and a coil of the non-contact IC card; detecting card reading actions; turning off, if the card inserting action is detected, the coil of the non-contact IC card; powering on the card when the card reaches a bottom of a card slot of the payment terminal; controlling, if the card is successfully powered on, the read head of contact IC card to read the card; controlling, if the card fails to be powered on, the read head of the magnetic stripe card to read the card when the card swiping action is detected; and controlling, if the card waving action is detected, the coil of the non-contact IC card to read card.

Abstract: A secured payment method, secured payment device and computer-readable storage medium, relating to the technical field of Internet. The method comprises: detecting whether a mobile terminal is connected to a first secured payment module, wherein the first secured payment module shares a payment hardware interface with the mobile terminal; activating the payment hardware interface, if the detection result shows that the mobile terminal is connected to the first secured payment module; detecting whether the payment hardware interface is controlled by the first secured payment module or by the mobile terminal; providing a payment warning, if the detection result shows that the payment hardware interface is controlled by the mobile terminal. Thus, the manufacturing costs of the devices can be reduced, potential safety risk in some transaction can also be avoided, and a secured payment is guaranteed.

Abstract: A secured payment method, secured payment device and computer-readable storage medium, relating to the technical field of Internet. The method includes: detecting whether a mobile terminal is connected; if the detection result shows that a mobile terminal is connected, activating a payment hardware interface shared with the mobile terminal; detecting whether the payment hardware interface is controlled by the secured payment device or by the mobile terminal during a payment process; if the detection result shows that the payment hardware interface is controlled by the mobile terminal, providing a payment warning. Thereby, the manufacturing cost of the devices can be reduced, also, potential safety risk in some transaction can be avoided, and a secured payment is guaranteed.

Abstract: A method for secure payment, including: detecting whether a connected mobile terminal exists; acquiring, when the connected mobile terminal exists, a first user transaction information, and encrypting the first user transaction information to generate a corresponding first encrypted transaction information; sending the first encrypted transaction information to a transaction verification server based on a first hardware interface of the mobile terminal, and receiving a transaction verification result from the transaction verification server; and determining, according to the transaction verification result, whether a payment operation is to be performed.

Abstract: The present application provides methods for downloading a key, a client, a password device, and a terminal device, in which, the client sends a request for downloading an initial key to a backend server, and receives a server identity certificate delivered by the backend server and forwards the server identity certificate to the password device. The client acquires a device identity ciphertext returned by the password device and sends the device identity ciphertext to the backend server. The client acquires a server identity ciphertext and an initial key ciphertext generated by the backend server, and sends the server identity ciphertext to the password device. After the password device successfully verifies an identity of the backend server, the client sends the initial key ciphertext to the password device.

Abstract: A method for updating firmware is provided. The method includes: obtaining an AP firmware update file and a SP firmware update file set by the AP, the AP firmware update file and the SP firmware update file set are obtained by parsing a same system firmware update file that has been released, and the SP firmware update file set supports multiple different models of the SP; updating, by the AP, a system firmware of the AP according to the AP firmware update file, and sending a target firmware update file parsed from the SP firmware update file set to the SP; the target firmware update file supports the models of the SP; updating, by the SP, a system firmware of the SP according to the target firmware update file. According to the present application, a unified management of firmware versions is facilitated.

Abstract: A tamper-proof structure and an electronic device are provided in the present application. The tamper-proof structure includes a first-order circuit board, at least one tamper-proof component, at least one safety signal wire and a security chip. The safety signal wire is wrapped around an outer layer of the first-order circuit board or penetrates through a through hole and is wrapped around an inner layer of the first-order circuit board to form a tamper-proof area as required. The safety signal wire is connected to a tamper-proof switch and the security chip correspondingly, and a level of the safety signal wire is changed when the tamper-proof switch or the safety signal wire is damaged, and the security chip is triggered to erase sensitive information accordingly. By punching on the first-order circuit board, an objective of tamper-proof and an objective of reduction of design cost and simplification of security solution are achieved simultaneously.