Patent ID: 8060739

Claim:
An apparatus for providing a security service in a home network, the apparatus comprising: a security-identifier (ID) marking module which marks with a security ID a portion of first data that needs to be encrypted; an encoding module which encodes a first public key and the first data, the first public key and a second public key being a pair of public keys necessary for providing a security service to a consumer electronics (CE) device in a home network; a transmission module which transmits the encoded first data to the CE device; and a reception module which receives second data from the CE device, the second data being obtained by encrypting part of a response message for the first data regarding the security ID with the first public key, wherein if a secure channel to the CE device exists, the transmission module transmits the portion of the first data which is marked with the security ID to the CE device through the secure channel and transmits another portion of the first data which is not marked with the security ID to the CE device through a regular channel, and if the secure channel to the CE device does not exist, the transmission module transmits all of the first data to the CE device through the regular channel.