Disclosed is a method of sharing content. According to the content sharing method, content is received from a service provider using a receive device. A content protection solution supported in a target device is detected. The content is converted so that it is compatible with a content protection solution supported in any one of the target device and the receive device on the basis of the detected content protection solution. The receive device can include a security solution level, indicating a security characteristic of the receive device, in a certificate of the receive device. Accordingly, content transmitted from a service provider using a receive device can be shared efficiently by redistributing the content in such a way as to be compatible with a security solution of a home device.