Method and apparatus for secure communication reusing a session key between clients and servers

The secure communication method and apparatus between the client and the server to store and reuse a single session key generated session key is not discarded after the session ends, is provided. Security communication method according to an embodiment of the present invention, the communication with the server to encrypt the data that the session key or decrypted if managed according to the session key to the session identification and a valid session key exists but is a valid session key is stored If not then the client generates a new session key, session key sharing process performed with the server and encrypted communication using the session key. Security, session key, re-use