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1. WO2007144510 - METHODS FOR BROADCASTING AND RECEIVING A SCRAMBLED MULTIMEDIA PROGRAMME, NETWORK HEAD, TERMINAL, RECEIVER AND SECURITY PROCESSOR FOR THESE METHODS

Publication Number WO/2007/144510
Publication Date 21.12.2007
International Application No. PCT/FR2007/000984
International Filing Date 13.06.2007
IPC
H04L 9/32 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
9Arrangements for secret or secure communication
32including means for verifying the identity or authority of a user of the system
H04N 7/167 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
7Television systems
16Analogue secrecy systems; Analogue subscription systems
167Systems rendering the television signal unintelligible and subsequently intelligible
CPC
H04L 2209/601
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
601Broadcast encryption
H04L 9/0833
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)
083involving central third party, e.g. key distribution center [KDC] or trusted third party [TTP]
0833involving conference or group key
H04L 9/3271
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
H04N 21/2347
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
21Selective content distribution, e.g. interactive television or video on demand [VOD]
20Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
23Processing of content or additional data; Elementary server operations; Server middleware
234Processing of video elementary streams, e.g. splicing of video streams, manipulating MPEG-4 scene graphs
2347involving video stream encryption
H04N 21/25816
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
21Selective content distribution, e.g. interactive television or video on demand [VOD]
20Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
25Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
258Client or end-user data management, e.g. managing client capabilities, user preferences or demographics, processing of multiple end-users preferences to derive collaborative data
25808Management of client data
25816involving client authentication
H04N 21/26606
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
21Selective content distribution, e.g. interactive television or video on demand [VOD]
20Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
25Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
266Channel or content management, e.g. generation and management of keys and entitlement messages in a conditional access system, merging a VOD unicast channel into a multicast channel
26606for generating or managing entitlement messages, e.g. Entitlement Control Message [ECM] or Entitlement Management Message [EMM]
Applicants
  • VIACCESS [FR]/[FR] (AllExceptUS)
  • CARLES, Philippe [FR]/[FR] (UsOnly)
  • CHEVALLIER, Anthony [FR]/[FR] (UsOnly)
  • DUBROEUCQ, Gilles [FR]/[FR] (UsOnly)
  • LANFRANCHI, Stéphane [FR]/[FR] (UsOnly)
Inventors
  • CARLES, Philippe
  • CHEVALLIER, Anthony
  • DUBROEUCQ, Gilles
  • LANFRANCHI, Stéphane
Agents
  • CABINET LAVOIX
Priority Data
060529614.06.2006FR
Publication Language French (FR)
Filing Language French (FR)
Designated States
Title
(EN) METHODS FOR BROADCASTING AND RECEIVING A SCRAMBLED MULTIMEDIA PROGRAMME, NETWORK HEAD, TERMINAL, RECEIVER AND SECURITY PROCESSOR FOR THESE METHODS
(FR) PROCEDES DE DIFFUSION ET DE RECEPTION D'UN PROGRAMME MULTIMEDIA EMBROUILLE, TETE DE RESEAU, TERMINAL, RECEPTEUR ET PROCESSEUR DE SECURITE POUR CES PROCEDES
Abstract
(EN)
A method of broadcasting a scrambled multimedia programme, by way of a broadband network, in which before transmitting a licence key: - a network head carries out a step of authenticating a terminal, and - if the terminal has been successfully authenticated, the network head sends the terminal a licence transmission message containing the licence key or cryptogram of the licence key, by way of a point-to-point link, and - if the terminal is not successfully authenticated, the network head acts (at 200) in such a way as to prevent the complete descrambling by this terminal of the scrambled multimedia programme broadcast.
(FR)
Un procédé de diffusion d'un programme multimédia embrouillé, par l'intermédiaire d'un réseau large bande, dans lequel avant une transmission d'une clé de licence : - une tête de réseau procède ô une étape d'authentification d'un terminal, et - si le terminal a été authentifié avec succès, la tête de réseau envoie au terminal un message de transmission de licence contenant la clé de licence ou un cryptogramme de la clé de licence, par l'intermédiaire d'une liaison point ô point, et - si le terminal n'est pas authentifié avec succès, la tête de réseau agit (en 200) de manière ô empêcher le désembrouillage complet par ce terminal du programme multimédia embrouillé diffusé.
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