SECURITY SYSTEM FOR COMMUNICATION

摘要

PURPOSE: A security system for communication is provided to prevent a third party from connecting to a server. CONSTITUTION: A client requests to connect a server(6) using a communication terminal(2) and a key transmission unit(8) in the terminal(2) sends a password automatically. A key receiver unit(10) in the server(6) receives the password from the key transmission unit(8) and connects the terminal(2) and server(6). If the password is not offered, the key receiver unit(10) disconnects the communication line to prevent a terminal(2) without a key transmission unit(8) from connecting to the server(6). The key transmission unit(8) and the key receiver unit(10) encode and decode communication data using the password.