| 摘要 |
<p>A method of transmitting and receiving data of a terminal according to an embodiment comprises: a process of determining a security key to be used when data is transmitted to or received from a specific terminal; a process of determining information for updating the security key; a process of transmitting a signal including security key-related information and the information for updating the security key to the specific terminal; and a process of encrypting the data transmitted to the specific terminal based on the security key or decrypting the data received from the specific terminal. According to an embodiment of the present invention, a security level during transmission and reception of data between terminals can be improved with a low complexity by setting a security key for communications between terminals, updating the security key without using a separate communications between the terminals, and performing encryption and decryption processes while data is transmitted or received.</p> |
