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1. WO2004109684 - INFORMATION RECORDING MEDIUM, DATA PROCESSING METHOD, AND COMPUTER PROGRAM

Publication Number WO/2004/109684
Publication Date 16.12.2004
International Application No. PCT/JP2004/006619
International Filing Date 11.05.2004
IPC
G11B 20/00 2006.1
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
20Signal processing not specific to the method of recording or reproducing; Circuits therefor
G11B 20/12 2006.1
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
20Signal processing not specific to the method of recording or reproducing; Circuits therefor
10Digital recording or reproducing
12Formatting, e.g. arrangement of data block or words on the record carriers
CPC
G11B 20/00086
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
20Signal processing not specific to the method of recording or reproducing; Circuits therefor
00086Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
G11B 20/0021
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
20Signal processing not specific to the method of recording or reproducing; Circuits therefor
00086Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
0021involving encryption or decryption of contents recorded on or reproduced from a record carrier
H04L 2209/60
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
2209Additional information or applications relating to cryptographic mechanisms or cryptographic arrangements for secret or secure communication H04L9/00
60Digital content management, e.g. content distribution
H04L 9/0869
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
9Cryptographic mechanisms or cryptographic; arrangements for secret or secure communication
08Key distribution ; or management, e.g. generation, sharing or updating, of cryptographic keys or passwords
0861Generation of secret information including derivation or calculation of cryptographic keys or passwords
0869involving random numbers or seeds
Applicants
  • ソニー株式会社 SONY CORPORATION [JP]/[JP] (AllExceptUS)
  • 高島 芳和 TAKASHIMA, Yoshikazu [JP]/[JP] (UsOnly)
  • 木谷 聡 KITANI, Satoshi [JP]/[JP] (UsOnly)
  • 米満 潤 YONEMITSU, Jun [JP]/[JP] (UsOnly)
  • 村松 克美 MURAMATSU, Katsumi [JP]/[JP] (UsOnly)
  • 浅野 智之 ASANO, Tomoyuki [JP]/[JP] (UsOnly)
Inventors
  • 高島 芳和 TAKASHIMA, Yoshikazu
  • 木谷 聡 KITANI, Satoshi
  • 米満 潤 YONEMITSU, Jun
  • 村松 克美 MURAMATSU, Katsumi
  • 浅野 智之 ASANO, Tomoyuki
Agents
  • 宮田 正昭 MIYATA, Masaaki
Priority Data
2003-16372309.06.2003JP
Publication Language Japanese (ja)
Filing Language Japanese (JA)
Designated States
Title
(EN) INFORMATION RECORDING MEDIUM, DATA PROCESSING METHOD, AND COMPUTER PROGRAM
(FR) SUPPORT D'ENREGISTREMENT D'INFORMATION, PROCEDE DE TRAITEMENT DE DONNEES ET PROGRAMME INFORMATIQUES
(JA) 情報記録媒体、およびデータ処理方法、並びにコンピュータ・プログラム
Abstract
(EN) An arrangement for preventing leakage of entity codes stored in an information recording medium. The arrangement ensures that amend studio code (ASC) and information recording medium manufacturer code (DMC) are encrypted and stored in an information recording medium. The data setting positions in a program map table (PMT) are controlled such that none of those codes overlaps with a seed region serving as key production information. As a result, even if the stored packets of the program map table storing therein the amend studio code (ASC) and information recording medium manufacturer code (DMC) are set to any position in the content packet sequence, then none of the entity codes overlaps with the seed region serving as non-encrypted data, so that external leakage of the codes can be prevented.
(FR) La présente invention concerne un agencement permettant d'empêcher la fuite de codes d'identité stockés dans un support d'enregistrement d'information. Cet agencement fait en sorte que des codes amend studio (ASC) et des codes de fabricant de support d'enregistrement d'information (DMC) soient cryptés et stockés dans un support d'enregistrement d'information. Les positions de fixation de données dans un tableau de carte de programmes(PMT) sont commandées de façon qu'aucun de ces codes ne chevauche une région noyau servant d'information de production de clef. Par conséquent, même si les paquets stockés du tableau de carte de programme stockant les codes amend studio (ASC) et les codes de fabricant de support d'enregistrements d'information (DMC) sont fixés à n'importe quelle position dans la séquence de paquets de contenu, aucun des codes d'entités ne vient chevaucher la région noyau servant de donnée non cryptée, de sorte qu'une fuite externe de ces codes peut être empêchée.
(JA) 情報記録媒体に格納される各エンティテイコードの漏洩を防止した構成を提供する。編集スタジオコード(ASC)と情報記録媒体製造者コード(DMC)を情報記録媒体に確実に暗号化して格納する構成とした。これらの各コードが鍵生成情報としてのシード領域に重ならないようにプログラムマップテーブル(PMT)内でのデータ設定位置を制御する構成としたので、編集スタジオコード(ASC)と情報記録媒体製造者コード(DMC)を格納したプログラムマップテーブルの格納パケットをコンテンツパケット列の任意の位置に設定した場合でも、各エンティテイコードが非暗号化データとしてのシード領域に重なることがなく、コードの外部漏洩を防止できる。
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