Method and apparatus for transmitting content to device which does not join domain

A computer-readable recording medium storing a computer program for executing a method of transmitting content from a first device which joins a domain to a second device which does not join the domain, the method comprising:

• determining at the first device whether adjacency exists between the first device and the second device;
• encrypting a content key corresponding to the content to be transmitted to the second device using a key of the second device, according to a result of the determining whether adjacency exists between the first device and the second device;
• and
• transmitting the encrypted content key and the content from the first device to the second device.

An apparatus for transmitting content to a device which does not join a domain, the apparatus comprising:

• an adjacency checking unit which determines adjacency to the device;
• an encryption unit which encrypts a content key corresponding to the content to be transmitted to the device, using a key of the device, according to an adjacency determination result of the adjacent checking unit;
• and
• a transmitting unit which transmits the content key encrypted by the encryption unit and the content corresponding to the content key to the device.

A method of transmitting content from a first device to a second device, the method comprising:

• receiving a content request from the second device;
• determining whether the second device does not join a domain of the first device;
• determining whether transmittance of the content is allowed on the basis of a license of the content if the second device does not join the domain of the first device;
• measuring a physical distance from the first device to the second device;
• and
• transmitting the content to the second device according to a result of the measuring of the physical distance.