Content processing device, content accumulation medium, content processing method and content processing program

摘要

With respect to encrypted content 104 stored in content storage medium 102 , by storing information with a small data amount related to the encrypted content 104 in content storage medium 102 in association with the encrypted content 104 , it is possible to distinguish between encrypted content 104 based on the related information without decoding the encrypted content 104 with a large data amount. It is thereby possible to more readily distinguish between a plurality of pieces of content stored in the content storage medium.