| http://www.w3.org/ns/prov#value | - ey (KEK) enciphered by an enabling key block (EKB), to be stored in a memory device. [0003] Recently, there has been a further growth of distribution of so-called ???contents??? data via a wide variety of software data including music data, game programs, picture data, or the like, which are respectively transmitted via internet service lines, or via distributable recording media including a memor
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