| 摘要 |
PURPOSE: A message security transmission method is provided to improve the convenience of a user by performing a security transmission service without updating key information. CONSTITUTION: A server encodes a control word through key information. The server transmits the encoded control word and the encoded content to a reception unit. A security module monitors a slave time directed by a slave time counter. When the slave time is matched with a slave call time, the security module transmits one or more verification message to the server. The server transmits a key message to the server by receiving a verification result. |
