Patent ID: 8863296
Filing Date: 2014-10-14
Classification: G11B,H04L

Abstract:
1. An information processing apparatus for performing a process for reproducing content from an information recording medium, the information processing apparatus comprising: a processor; and a memory device storing instructions, which when executed by the processor, cause the processor to: (a) generate a copy control key using a copy/play control information file which is stored on the information recording medium, the generated copy control key corresponding to each of a plurality of content management units stored on the information recording medium, the copy/play control information file being set to correspond to at least one of the content management units; (b) obtain an encrypted unit key which is stored on the information recording medium; (c) generate a decrypted unit key by, using the generated copy control key, decrypting the encrypted unit key; (d) decrypt, using the decrypted unit key, encrypted content stored on the information recording medium, wherein the encrypted content, the copy/play control information file, and the encrypted unit key are separately set on the information recording medium, and wherein the copy/control information file includes basic copy/play control information and extended copy/play control information including extended content usage information other than the basic copy/play control information.