Vehicle electronic device, electronic device, information receiving and sending methods thereof, server and communication system

A communication system, comprising a vehicle electronic device, an electronic device and a server, wherein

• the electronic device is configured to send vehicle information of a vehicle to the server, send a connection request including a first dynamic password to the vehicle electronic device when receiving a first dynamic password sent by the server, and send information to the vehicle electronic device when successfully connected with the vehicle electronic device;
• the server is configured to generate the first dynamic password through a preset rule according to the vehicle information, a second time for receiving the vehicle information, and stored first password corresponding information when receiving the vehicle information, and to send the first dynamic password to the electronic device;
• and
• the vehicle electronic device is configured to generate a second dynamic password through the preset rule according to the first time for receiving the connection request and stored first password information and vehicle information when receiving the connection request including the first dynamic password sent by the electronic device, and to receive information sent by the electronic device when determining that the second dynamic password is matched with the first dynamic password, in which a difference between the first time and the second time is less than or equal to a preset duration;
• and
• wherein the vehicle electronic device is an electronic tag.

An information receiving method of a vehicle electronic device, comprising:

• generating a second dynamic password according to a first time for receiving a connection request and stored first password information and vehicle information when receiving a connection request including a first dynamic password sent by an external electronic device;
• and
• receiving information sent by the external electronic device when determining that the second dynamic password is matched with the first dynamic password, in which the first dynamic password is a dynamic password generated by a server through a preset rule, according to vehicle information of a vehicle sent by the electronic device, a second time for receiving the vehicle information, and first password corresponding information stored in the server, and sent to the electronic device;
• the first password corresponding information is matched with the first password information;
• and a difference between the first time and the second time is less than or equal to a preset duration;
• and
• wherein the vehicle electronic device is an electronic tag.