Contrôle d'accès (télévision)

Le contrôle d'accès ou accès conditionnel (en anglais, conditional access - CA ou conditional access system - CAS) désigne en télédiffusion un système permettant de limiter l'accès de certaines chaînes, programmes ou services à un ou plusieurs abonnés ou usagers.

Il associe équipements de diffusion ou de transmission, appareils de réception ou terminaux de communication, décodeurs TV, déchiffreurs avec le support d'identification individuel (carte d'abonnement, contrôle d'adresse IP, logiciels et base de données mis à jour...).

Le contrôle d'accès est soit intégré (Simulcrypt), soit optionnel avec un Module d'accès conditionnel (ou CAM) externe glissé dans l'interface commune ou Multicrypt. Il est parfois associé à un système d'exploitation, dit de navigation (par exemple : OpenTV, MediaHighway, NSD...).

En exploitation

Certains des contrôles d'accès connaissent régulièrement des mises à jour imposant un changement de carte à puce, voire une mise à niveau du logiciel d'exploitation du récepteur utilisé. Ces mesures visent à combattre les risques de piratage.

Une partie de ceux étant ou ayant été exploités en Europe :

Les autres contrôles d'accès :

  • Accessgate
  • AlphaCrypt
  • B-CAS
  • BetaCrypt
  • BISS
  • China Crypt
  • Codicrypt
  • CoreCrypt
  • CryptOn
  • DG-Crypt
  • DigiCipher
  • DreamCrypt
  • EasyCas
  • Eurocrypt
  • EuroDec
  • Griffin
  • KeyFly
  • Carmageddon (Nagra)
  • Aladin (Nagravision)
  • Merlin (Nagravision)
  • Neotioncrypt
  • OmniCrypt
  • PowerVu
  • RAS (Remote Authorisation System)
  • RossCrypt
  • RusCrypto
  • Safeview
  • T-crypt
  • ThalesCrypt
  • Verimatrix
  • VideoCrypt
  • NDS Videoguard
  • X-Crypt
  • Z-Crypt

Liste des contrôles d'accès

Systèmes analogiques

Systèmes numériques

CA ID Nom Développé par Commercialisation Niveau de Sécurité Notes
0x4800 Accessgate Telemann
0x4A20 AlphaCrypt AlphaCrypt
? B-CAS Au Japon exclusivement
1702, 1722, 1762 BetaCrypt 1 BetaTechnik \ Beta Research (Filiale de KirchMedia) Déchiffré Modifié par Irdeto
0x1710 BetaCrypt 2 BetaTechnik \ Beta Research (Filiale de KirchMedia) Déchiffré Modifié par Irdeto
0x2600 BISS European Broadcasting Union Déchiffré
0x4900 China Crypt CrytoWorks (Chine) (Irdeto)
0x22F0 Codicrypt Scopus Network Technologies Fiable
0x0B00 Conax CAS 5 Norwegian Telekom
0x0B00 Conax CAS 7 Norwegian Telekom
? CoreCrypt
4347 CryptOn CryptOn
0D00, 0D02, 0D03, 0D05, 0D07, 0D20 Cryptoworks Philips CryptoTec Anciennes cartes déchiffrées
0x4ABF DG-Crypt Beijing Compunicate Technology Inc.
0x0700 DigiCipher 2 Jerrold \ GI \ Motorola 4DTV Non compatible DVB
0x4A70 DreamCrypt Dream Multimedia
0x4A10 EasyCas Easycas
0464 EuroDec Eurodec
5501 Griffin
0x0606 Irdeto 1 Irdeto 199?
ox0602, 0604, 0606, 0608, 0622, 0626 Irdeto 2 Irdeto 2000 Déchiffrement partiel; artes Zeta et Kappa fiables (introduites en 2006 et 2008 respectivement
0x06XX Irdeto 3 Irdeto 2010 Fiable
0x4AA1 KeyFly SIDSA
0x0100 Seca Mediaguard 1 SECA
0x0100 Seca Mediaguard 2 SECA Déchiffrement partiel
1800, 1801, 1810, 1830 Nagravision Nagravision 2003 Déchiffré
1801 Nagravision Carmageddon Nagravision Combination of Nagravision with BetaCrypt
1702, 1722, 1762, 1801 Nagravision Aladin Nagravision Déchiffré
1801 Nagravision 3 - Merlin Nagravision 2007 Fiable
0x4AD4 OmniCrypt Widevine Technologies, Inc. 2004 Utilisé seulement par les chaînes diffusant des vidéos pornographiques
0x0E00 PowerVu Scientific Atlanta
0x0E00 PowerVu + Scientific Atlanta
0x1000 RAS (Remote Authorisation System) Tandberg Television Système professionnel.
Non disponible pour le domaine public
0x4AE0 RossCrypt Digi Raum Electronics Co. Ltd. Fiable
0101 RusCrypto
4A60, 4A61, 4A63 SkyCrypt \ Neotioncrypt \ Neotion SHL AtSky \ Neotion[1] 2003
? T-crypt
0x4A80 ThalesCrypt TPS Modifié par Viaccess.
A été développé après que TPScrypt eut été déchiffré[2]
0x0500 TPScrypt France Télécom Déchiffré Modification par Viaccess et utilisable conjointement à Viaccess 2.3
0x0500 Viaccess "1" 2.3 France Télécom   Déchiffré
0x0500 Viaccess "2" 2.4 France Télécom 2002 Déchiffré
0x0500 Viaccess "2" 2.5 France Télécom 2003 Déchiffré
0x0500 Viaccess "2" 2.6 France Télécom 2006 Déchiffré
0x0500 Viaccess "3" 3.0 France Télécom 2007 Partiellement Déchiffré
0x0500 Viaccess "4" 4.0 France Télécom 2008 Fiable
VideoCrypt I News Datacom
VideoCrypt II News Datacom
VideoCrypt-S News Datacom
0911, 0919, 0960, 0961 NDS Videoguard 1 NDS
0911, 0919, 0960, 0961 NDS Videoguard 2 NDS
4AD0, 4AD1 X-Crypt XCrypt Inc. Utilisé uniquement par les chaînes diffusant des vidéos pornographiques
5500 \ 4AE0 Z-Crypt \ DRE Crypt Digi Raum Electronics Fiable
0x4B00 Safeview Safeview 2006 Secure

Notes et références

  1. « Skycrypt,  » (consulté le )
  2. « TPSCrypt, » (consulté le )


Voir aussi

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