| 摘要 |
PROBLEM TO BE SOLVED: To provide a data structure capable of preventing a contents data from being illegally deciphered and copied. SOLUTION: This data structure is comprised of a common header area 200 and a contents area 250, and in the common header area 200, a player ID area for storing a player ID functioning as a public key, and a contents data area 280 for recording the contents data scrambled by using the player ID are provided. |
