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1. JP2004220317 - MUTUAL AUTHENTICATION METHOD, PROGRAM, RECORDING MEDIUM, SIGNAL PROCESSING SYSTEM, REPRODUCTION DEVICE, AND INFORMATION PROCESSOR

Office
Japon
Numéro de la demande 2003006915
Date de la demande 15.01.2003
Numéro de publication 2004220317
Date de publication 05.08.2004
Type de publication A5
CIB
G06F 12/14
GPHYSIQUE
06CALCUL; COMPTAGE
FTRAITEMENT ÉLECTRIQUE DE DONNÉES NUMÉRIQUES
12Accès à, adressage ou affectation dans des systèmes ou des architectures de mémoires
14Protection contre l'utilisation non autorisée de mémoire
G06F 3/06
GPHYSIQUE
06CALCUL; COMPTAGE
FTRAITEMENT ÉLECTRIQUE DE DONNÉES NUMÉRIQUES
3Dispositions d'entrée pour le transfert de données à traiter pour leur donner une forme utilisable par le calculateur; Dispositions de sortie pour le transfert de données de l'unité de traitement à l'unité de sortie, p.ex. dispositions d'interface
06Entrée numérique à partir de, ou sortie numérique vers des supports d'enregistrement
G11B 20/10
GPHYSIQUE
11ENREGISTREMENT DE L'INFORMATION
BENREGISTREMENT DE L'INFORMATION BASÉ SUR UN MOUVEMENT RELATIF ENTRE LE SUPPORT D'ENREGISTREMENT ET LE TRANSDUCTEUR
20Traitement du signal, non spécifique du procédé d'enregistrement ou de reproduction; Circuits correspondants
10Enregistrement ou reproduction numériques
H04L 9/32
HÉLECTRICITÉ
04TECHNIQUE DE LA COMMUNICATION ÉLECTRIQUE
LTRANSMISSION D'INFORMATION NUMÉRIQUE, p.ex. COMMUNICATION TÉLÉGRAPHIQUE
9Dispositions pour les communications secrètes ou protégées
32comprenant des moyens pour vérifier l'identité ou l'autorisation d'un utilisateur du système
CPC
G11B 20/00362
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
00217the cryptographic key used for encryption and/or decryption of contents recorded on or reproduced from the record carrier being read from a specific source
00253wherein the key is stored on the record carrier
00362the key being obtained from a media key block [MKB]
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 20/10
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
H04L 9/0822
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
0816Key establishment, i.e. cryptographic processes or cryptographic protocols whereby a shared secret becomes available to two or more parties, for subsequent use
0819Key transport or distribution, i.e. key establishment techniques where one party creates or otherwise obtains a secret value, and securely transfers it to the other(s)
0822using key encryption key
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
H04L 9/3273
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
9Cryptographic mechanisms or cryptographic; arrangements for secret or secure communication
32including means for verifying the identity or authority of a user of the system ; or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials
3271using challenge-response
3273for mutual authentication
Déposants SONY CORP
ソニー株式会社
Inventeurs KITANI SATOSHI
木谷 聡
MURAMATSU KATSUMI
村松 克美
Mandataires 杉浦 正知
森 幸一
Titre
(EN) MUTUAL AUTHENTICATION METHOD, PROGRAM, RECORDING MEDIUM, SIGNAL PROCESSING SYSTEM, REPRODUCTION DEVICE, AND INFORMATION PROCESSOR
(JA) 信号処理システム、再生装置および情報処理装置
Abrégé
(EN)

PROBLEM TO BE SOLVED: To improve the safety of copyright protection technology, and to revoke an electronic device such as an illegal drive.

SOLUTION: An MKB and a device key 121 of a drive are inputted to a process MKB 122, the drive is applied with a revoking process, and a host 103 is applied with a revoking process by a process MKB 132. MAC values calculated by MAC calculation blocks 123, 133 are compared in the host 103. When it is decided that the two values coincide, authentication of the drive 102 by the host 103 succeeds. MAC values calculated by MAC calculation blocks 134, 124 of the host 103 are compared in the drive 102. When it is decided the two values coincide, authentication of the host 103 by the drive 102 succeeds. When the mutual authentication succeeds, a common session key is produced by MAC calculation blocks 125, 135.

COPYRIGHT: (C)2004,JPO&NCIPI

(JA)

【課題】著作権保護技術の安全性を高め、また、違法なドライブ等の電子機器をリボークする。
【解決手段】プロセスMKB122にMKBとドライブの持つデバイスキー121とが入力され、ドライブがリボーク処理され、プロセスMKB132によってホスト103がリボーク処理される。MAC演算ブロック123および133が演算したMAC値がホスト103内において比較され、二つの値が同一と判定されると、ホスト103によるドライブ102の認証が成功したことになる。ホスト103のMAC演算ブロック134および124が演算したMAC値がドライブ102内において比較され、二つの値が同一と判定されると、ドライブ102によるホスト103の認証が成功したことになる。相互認証が成功すると、MAC演算ブロック125および135によって、共通のセッションキーが生成される。
【選択図】 図5