Patent ID: 8391484

Claim:
A method for performing communication between a first terminal and a second terminal, the method comprising: generating, by the first terminal, a first biographical (bio) key using bio information of a user; sending, by he first terminal, an INVITE request message for a video communication to the second terminal; receiving, by a first terminal, an INVITE response message in response to the INVITE request message from the second terminal for establishing a session between the first terminal and the second terminal; modifying, by the first terminal, the first bio key into a first modified bio key; sending, by the first terminal, the first modified bio key to the second terminal; receiving, by the first terminal, a second modified bio key from the second terminal; generating, by the first terminal, a session shared key using the first modified bio key and the second modified bio key; encrypting, by the first terminal, packet data using the session shared key; and sending, by the first terminal, the encrypted packet data to the second terminal.