Information recording medium, data processing method, and computer program

A data processing method for generating data to be written to an information recording medium, comprising:

• an entity code setting step in which a position at which an entity code set for an entity in a manufacturing route of said information recording medium is set is controlled to set said entity code in a control information table;
• a table information stored packet generating step in which a plurality of packets in which said control information table is stored in a divided manner are generated;
• a step in which said plurality of table information stored packets are arranged in a content stored packet sequence in a distributed manner;
• and
• a step in which data included in a certain encryption processing unit is encrypted by use of a key generated on the basis of a seed which is encryption processing key generating information set for each said encryption processing unit;
• wherein said entity code setting step includes a step in which control is executed such that said entity code is included in an encrypted area encrypted by a key generated on the basis of said seed without overlapping an area to which said seed is set.

A computer program for executing the processing of generating data to be written to an information recording medium, comprising:

• an entity code setting step in which a position at which an entity code set for an entity in a manufacturing route of said information recording medium is set is controlled to set said entity code in a control information table;
• a table information stored packet generating step in which a plurality of packets in which said control information table is stored in a divided manner are generated;
• a step in which said plurality of table information stored packets are arranged in a content stored packet sequence in a distributed manner;
• and
• a step in which data included in a certain encryption processing unit is encrypted by use of a key generated on the basis of a seed which is encryption processing key generating information set for each said encryption processing unit;
• wherein said entity code setting step includes a step in which control is executed such that said entity code is included in an encrypted area encrypted by a key generated on the basis of said seed without overlapping an area to which said seed is set.