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1. CN1706148 - Mutual authentication method, program, recording medium, signal processing system, reproduction device, and information processing device

Office
Chine
Numéro de la demande 200380100342.0
Date de la demande 18.12.2003
Numéro de publication 1706148
Date de publication 07.12.2005
Type de publication A
CIB
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.
索尼株式会社
Inventeurs Kitani Satoshi
木谷聪
Muramatsu Katsumi
村松克美
Mandataires dang jianhua
中国国际贸易促进委员会专利商标事务所
Données relatives à la priorité 2003006915 15.01.2003 JP
Titre
(EN) Mutual authentication method, program, recording medium, signal processing system, reproduction device, and information processing device
(ZH) 相互验证方法、程序、记录介质、信号处理系统、再现装置、以及信息处理装置
Abrégé
(EN)
An MKB and a device key (121) of a drive are input to a process MKB. The drive is subjected to revoke processing and a host (103) is revoked by a process MKB (132). MAC values calculated by MAC calculation blocks (123, 133) are compared in the host (103). If the two values are judged to be identical, the authentication of the drive (102) by the host (103) is successful. MAC values calculated by MAC calculation blocks (134, 124) of the host (103) are compared in the drive (102). If the two values are judged to be identical, authentication of the host (103) by the drive (102) is successful. When the mutual authentication is successful, a common session key is generated by MAC calculation blocks (125, 135).

(ZH)

本发明涉及相互验证方法、程序、记录介质、信号处理系统、再现装置、以及信息处理装置,其中MKB和驱动器的器件密钥(121)输入到过程MKB。过程MKB(132)对驱动器执行撤销过程。过程MKB(132)对主机(103)执行撤销过程。主机(103)比较MAC计算部件(123和133)所计算的MAC值。当主机(103)确定两个值相同时,主机(103)成功地验证驱动器(102)。驱动器(102)比较主机(103)的MAC计算部件(134和124)计算的MAC值。当驱动器(102)确定两个值相同时,驱动器(102)成功地验证主机(103)。当已经成功地执行相互验证时,MAC计算部件(125和135)产生公共对话密钥。