Patent ID: 8850190

Claim:
A secret communication method between neighboring user terminals, comprising: 1) determining a neighboring encryption switching equipment shared by a first user terminal and a second user terminal, wherein the first user terminal and the second user terminal are neighboring user terminals; 2) establishing, by the neighboring encryption switching equipment, an inter-station key for communication between the first user terminal and the second user terminal; and 3) performing data secret communication between the first user terminal and the second user terminal by using the inter-station key, wherein the step 1) comprising: 1A) the first user terminal (STA 1 ) transmits a neighboring encryption switching equipment selection requesting packet (M 1 ) to the second user terminal (STA 2 ), the neighboring encryption switching equipment selection requesting packet includes a list of information of neighboring encryption switching equipments of the first user terminal (STA 1 ); 1B) after receiving, the neighboring encryption switching equipment selection requesting packet (M 1 ) transmitted by the first user terminal (STA 1 ), the second user terminal (STA 2 ) looks us a list of neighboring encryption switching equipments of the second user terminal (STA 2 ), selects a neighboring encryption switching equipment shared with the first user terminal (STA 1 ), constructs a neighboring encryption switching equipment selection responding packet (M 2 ), and transmits the neighboring encryption switching equipment selection responding packet (M 2 ) to the first user terminal (STA 1 ); the neighboring encryption switching equipment selection responding packet (M 2 ) includes information of the neighboring encryption switching equipment selected by the second user terminal (STA 2 ) and shared with the first user terminal (STA 1 ); 1C) after receiving the neighboring encryption switching equipment selection responding packet (M 2 ) transmitted from the second user terminal (STA 2 ), the first user terminal (STA 1 ) extracts the information of the neighboring encryption switching equipment selected by the second user terminal STA 2 and shared with the first user terminal (STA 1 ).