Invention Grant
- Patent Title: Information processing apparatus, information recording medium, information processing method, and information processing program
- Patent Title (中): 信息处理装置,信息记录介质,信息处理方法和信息处理程序
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Application No.: US12436323Application Date: 2009-05-06
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Publication No.: US08219818B2Publication Date: 2012-07-10
- Inventor: Kazuo Yamamoto , Kenjiro Ueda
- Applicant: Kazuo Yamamoto , Kenjiro Ueda
- Applicant Address: JP Tokyo
- Assignee: Sony Corporation
- Current Assignee: Sony Corporation
- Current Assignee Address: JP Tokyo
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- Priority: JP2008-129140 20080516
- Main IPC: G06F21/00
- IPC: G06F21/00

Abstract:
An information processing apparatus includes: a reproducing unit that reads, from a disc, a content and a content code file storing a content code that includes at least any one of a program or conversion data applied to a content reproducing process, to execute the content reproducing process; and a signature verification unit that verifies a digital signature set for the content code file. The signature verification unit verifies the signature using different pieces of set signature target data between a signature verification process executed in reproducing the content recorded in a ROM disc and a signature verification process executed in reproducing the content recorded in a non-ROM disc other than the ROM disc. The reproducing unit, when signature verification is successfully executed by the signature verification unit, applies the content code stored in the content code file, for which signature verification is successful, to reproduce the content.
Public/Granted literature
Information query