Title:
情報処理装置、情報記録媒体、および情報処理方法、並びにコンピュータ・プログラム
Document Type and Number:
Japanese Patent JP4734906
Kind Code:
B2
Abstract:
A configuration is provided which improves scrambling processing of content and eliminates unauthorized use of content. Scramble rules which differ for each content are used for content scrambling processing. For example, in the event of using shuffling processing, various shuffle states are specified as scramble rules. In the event of using Exclusive-OR processing, a value applicable to EXOR is specified as the scramble rule. Also, in the event of using rotation processing, a shift amount is specified as the scramble rule. In the event of using 32 shuffle elements in shuffling processing, 32! different shuffle states, that is to say, 32! different scramble rules can be specified. Also, the values for EXOR or the rotation shift amount can be set as various values, and many scramble rules can be set.
Inventors:
Kenjiro Ueda
Muramatsu Katsumi
Takeo Oishi
Motoki Kato
Muramatsu Katsumi
Takeo Oishi
Motoki Kato
Application Number:
JP2004353637A
Publication Date:
July 27, 2011
Filing Date:
December 07, 2004
Export Citation:
Assignee:
ソニー株式会社
International Classes:
G06F21/10; G06F21/60; G06F21/62; G09C1/00; G11B20/10; H04L9/14
Domestic Patent References:
| JP10145773A | ||||
| JP7281596A | ||||
| JP45358A1 | ||||
| JP2001167518A | ||||
| JP2005074187A1 | ||||
| JP2003025930A1 | ||||
| JP2001223654A | ||||
| JP2000228060A | ||||
| JP10208386A |
Attorney, Agent or Firm:
Masaaki Miyata
Eiji Yamada
Toshio Sawada
Eiji Yamada
Toshio Sawada