Method and apparatus for performing video communication

An apparatus for performing communication, comprising:

• an outer input device that receives voice and video signals;
• an outer output device that outputs the voice and video signals;
• an encoding and decoding module that encodes and decodes the voice and video signals transferred from the outer input device and outputs a decoded video signal;
• a biological information extracting part that obtains biological information from the video signal outputted from the encoding and decoding module and outputs the biological information;
• a bio key creating part that creates and manages a first bio key using the biological information outputted from the biological information extracting part;
• a session sharing key creating part creates a session sharing key using the first bio key and a second bio key;
• a telecommunication module that transmits and receives packet data encoded using the session sharing key;
• and
• an encryption certifying part that creates a restored bio key and certifies the packet data encoded using the session sharing key.

A method for performing communication, the method comprising:

• creating a first bio key using a user's biological information and saving the first bio key in a first terminal;
• transmitting, by the first terminal, a request for communication to a second terminal;
• receiving a second bio key from the second terminal and storing the second bio key;
• creating a session sharing key using the first bio key and the second bio key;
• encoding data using the session sharing key;
• and
• transmitting the encoded data to the second terminal.

A method for performing communication, the method comprising:

• creating a second bio key using a user's biological information and saving the first bio key in a second terminal;
• receiving a request for communication;
• receiving a first bio key from a first terminal and storing the first bio key;
• transmitting the second bio key to the first terminal;
• creating a session key using the first bio key and the second bio key;
• creating a restored bio key using the biological information;
• and
• performing user certification by comparing the first bio key with the restored bio key.

A communication system comprising:

• a first terminal and a second terminal;
• wherein the first terminal creates a first bio key using a first user's biological information and saves the first bio key, and the second terminal creates a second bio key using a second user's biological information and saves the second bio key;
• wherein the first terminal transmits a request for communication and the first bio key to the second terminal;
• wherein the second terminal transmits the second bio key to the first terminal;
• wherein the first and second terminals create a session key using the first bio key and the second bio key;
• wherein the second terminal creates a restored bio key using at least one of the first user's biological information and the second user's biological information;
• and
• wherein the second terminal performs user certification by comparing the first bio key with the restored bio key.