Data transmission method, terminal, and electronic signature method and system

A data transmission method, comprising:

• establishing, by an electronic signature token, an NFC connection with a terminal;
• sending, by the electronic signature token, a Bluetooth address of the electronic signature token to the terminal via the NFC connection;
• receiving, by the electronic signature token, a Bluetooth address of the terminal and first information sent by the terminal via the NFC connection;
• prompting, by the electronic signature token, the first information;
• performing, by the electronic signature token, a processing on the first information to acquire second information after the electronic signature token receives a confirming instruction for indicating that the first information is correct;
• broadcasting, by the electronic signature token, the Bluetooth address of the electronic signature token to be explored by the terminal;
• establishing, by the electronic signature token, a Bluetooth connection with the terminal corresponding to the Bluetooth address of the terminal;
• and
• sending, by the electronic signature token, the second information to the terminal via the Bluetooth connection.

A terminal, comprising:

• a first NFC module;
• and
• a first Bluetooth module, wherein,
• the first NFC module is configured to establish an NFC connection with an electronic signature token, to receive a Bluetooth address of the electronic signature token sent by the electronic signature token via the NFC connection, to send a Bluetooth address of the terminal and first information to the electronic signature token via the NFC connection, and to send the Bluetooth address of the electronic signature token to the first Bluetooth module;
• and
• the first Bluetooth module is configured to perform a Bluetooth address scanning to explore the Bluetooth address of the electronic signature token acquired via the NFC connection, to establish a Bluetooth connection with the electronic signature token corresponding to the Bluetooth address of the electronic signature token acquired via the NFC connection, to receive second information sent by the electronic signature token via the Bluetooth connection, in which the second information is acquired by performing a processing on the first information by the electronic signature token.

An electronic signature token, comprising:

• a second NFC module,
• a prompting module,
• a confirming module,
• a data processing module and
• a second Bluetooth module, wherein,
• the second NFC module is configured to establish an NFC connection with a terminal, to send a Bluetooth address of the electronic signature token to the terminal via the NFC connection, to receive a Bluetooth address of the terminal and first information sent by the terminal via the NFC connection, to send the first information to the data processing module, and to send the Bluetooth address of the terminal to the second Bluetooth module;
• the prompting module is configured to display and/or to speech-play the first information;
• the confirming module is configured to receive a confirming instruction, and to indicate the data processing module to perform a processing on the first information, in which the confirming instruction is configured to indicate that the first information displayed and/or speech-played by the prompting module is correct;
• the data processing module is configured to perform a processing on the first information to acquire second information, and to send the second information to the second Bluetooth module;
• and
• the second Bluetooth module is configured to broadcast the Bluetooth address of the electronic signature token to be explored by the terminal, to establish a Bluetooth connection with the terminal corresponding to the Bluetooth address of the terminal, and to send the second information to the terminal via the Bluetooth connection.