Reproducing device, recording device, recording medium, data processing method, data processing program, data recording method, data recording program, and integrated circuit

摘要

A data generating is device capable of preventing unauthorized extraction of plaintext content between decryption processing and digital watermark embedment processing. A content reproducing device obtains restoration information and, in accordance with the restoration information, selectively performs predetermined restoration processing and processing of embedding device unique information, on content data at a position shown by the restoration information.