Encrypted communication method and electronic device

An encrypted communication method, performed by a second electronic device in communication with a first electronic device, the first electronic device comprising a first processor and a second processor, the first processor configured to run a first operation system and communicating through an encrypted channel of a first Bluetooth, and the second processor configured to run a second operation system and communicating through an unencrypted channel of a second Bluetooth,

• the method comprising:
• generating a key;
• transmitting, through the encrypted channel of the first Bluetooth, the key to the first processor configured to run the first operation system in the first electronic device, wherein the key is used to instruct the first processor to transmit the key to the second processor;
• and
• transmitting, in response to detecting that the first electronic device is switched to the second operation system run by the second processor, through the unencrypted channel of the second Bluetooth, a first ciphertext to the second processor in the first electronic device, wherein the first ciphertext is generated by the second electronic device by encrypting a first plaintext with the key, and wherein the first ciphertext is configured to instruct the second processor to decrypt the first ciphertext with the key to obtain the first plaintext;
• wherein the method further comprises:
• transmitting, through the encrypted channel of the first Bluetooth, an identifier of the second electronic device to the first processor in the first electronic device, wherein the identifier of the second electronic device is used to instruct the first processor to transmit the received identifier of the second electronic device to the second processor;
• matching, by the second processor, the received identifier of the second electronic device with a candidate device connected to the first electronic device;
• and
• receiving, by the second processor, the first ciphertext transmitted from the candidate device serving as the second electronic device.

An electronic device, comprising:

• a memory having a computer program stored thereon;
• and
• a first processor configured to run a first operation system and communicating through an encrypted channel of a first Bluetooth;
• and
• a second processor configured to run a second operation system and communicating through an unencrypted channel of a second Bluetooth,
• wherein the computer program, when being executed by a processor, causes the processor to implement an encrypted communication method comprising:
• receiving, by the first processor configured to run the first operation system, a key transmitted from an additional electronic device, and transmitting the key to the second processor, wherein the key is transmitted from the additional electronic device to the first processor through the encrypted channel of the first Bluetooth;
• receiving, by the second processor, in response to the electronic device being switched to the second operation system run by the second processor, a first ciphertext transmitted from the additional electronic device, wherein the first ciphertext is generated by the additional electronic device by encrypting a first plaintext with the key, and wherein the first ciphertext is transmitted from the additional electronic device to the second processor through the unencrypted channel of the second Bluetooth;
• and
• obtaining the first plaintext by decrypting the first ciphertext with the key by the second processor;
• wherein the method further comprises:
• receiving, by the first processor, an identifier of the additional electronic device transmitted from the additional electronic device, and transmitting the identifier of the additional electronic device to the second processor, wherein the identifier of the additional electronic device is transmitted from the additional electronic device through the encrypted channel of the first Bluetooth;
• matching, by the second processor, in response to the first electronic device being switched to the second operation system run by the second processor, the received identifier of the additional electronic device with a candidate device connected to the first electronic device;
• and
• receiving, by the second processor, the first ciphertext transmitted from the candidate device serving as the additional electronic device.