Viaccess is a

conditional access system Conditional access (CA) is a term commonly used in relation to software and to digital television systems. Conditional access is that ‘just-in-time’ evaluation to ensure the person who is seeking access to content is authorized to access the c ...

edit by

Orange S.A. Orange S.A. (), formerly France Télécom S.A. (stylized as france telecom) is a French multinational telecommunications corporation. It has 266 million customers worldwide and employs 89,000 people in France, and 59,000 elsewhere. In 2015, ...

There are six versions in use today, Viaccess PC2.3, Viaccess PC2.4, Viaccess PC2.5, Viaccess PC2.6, Viaccess ACS3.x/Prime Sentinel, Viaccess ACS4.1, Viaccess ACS5.0, and Viaccess ACS6.x/Adaptive Sentinel. Viaccess was developed as the digital version of the EuroCrypt system used with the hybrid MAC system, The first version is sometimes referred to as Viaccess 1, and the latter three, although different, as Viaccess 2. PC2.3 and PC2.4 are known to be ineffective, and many

set-top box A set-top box (STB), also colloquially known as a cable box and historically television decoder, is an information appliance device that generally contains a TV-tuner input and displays output to a television set and an external source of sign ...

es can be 'patched' to decrypt Viaccess signals without payment, however PC2.5 and PC2.6 are secure, with PC2.5 remaining secure two years after its first commercial deployment. PC2.6 was introduced at the end of 2005. PC3.0 was introduced during mid-2007. There are two modifications of Viaccess PC2.3 in use. The first, known as TPS Crypt, is used by TPS. Despite being compromised also, the TPS Crypt system has been further modified to use Advanced Encryption System (AES) keys. These AES keys were originally updated once weekly, however after this inconvenienced unauthorised viewers little, a second TPS crypt system was introduced, by which keys are changed every 12 minutes, with keys being sent over TPS's internal Open TV system. This therefore meant that only TPS receivers could receive the new AES key, and not the insecure TPS subscription cards. Monitoring and analysing of the keys by hacking groups, however, has brought about key lists, where the AES keys have been successfully predicted. Implementation of this procedure of automatically updating keys has proved difficult, if not impossible, to implement on many satellite receivers, rendering the TPS Crypt AES system a general success. In 2008, Viaccess acquired

Orca interactive The orca or killer whale (''Orcinus orca'') is a toothed whale belonging to the oceanic dolphin family, of which it is the largest member. It is the only Extant taxon, extant species in the genus ''Orcinus'' and is recognizable by its black ...

and in 2012 they merge under the name Viaccess-Orca.Viaccess and Orca interactive to merge
/ref> The second Viaccess modification, called ThalesCrypt, is used by Canal Satellite France to protect its contents on the transport network to the head-ends of the cable networks; it is an over-encryption mechanism of the original protocol encryption keys. Viaccess is currently used by a large number of providers. These include: * Team:Media Bosnia Some programs *

ART Art is a diverse range of human activity, and resulting product, that involves creative or imaginative talent expressive of technical proficiency, beauty, emotional power, or conceptual ideas. There is no generally agreed definition of wha ...

NTV NTV may refer to: Television * NTV (Bangladesh), a Bengali-language satellite television channel in Bangladesh * NTV (India), Telugu regional channel * NTV (Kenya) * NTV (Mongolia), a television channel based in Mongolia * NTV (Newport Televis ...

* Televisa Networks * Canal Satellite France * FRANSAT * AB Sat * ETTV * TBLTV *

Home2US A home, or domicile, is a space used as a permanent or semi-permanent residence for one or many humans, and sometimes various companion animals. It is a fully or semi sheltered space and can have both interior and exterior aspects to it. H ...

* Orange TV Romania *

Orange Polska Orange Polska (formerly Telekomunikacja Polska) is a Polish telecommunications provider established in December 1991. It is a public company traded on the Warsaw Stock Exchange, with a controlling stake owned by Orange S.A., the latter controlli ...

YouSee YouSee is the largest quadruple play service provider in Denmark, and is a part of Nuuday which is a spun-off company from TDC Group, the largest telecommunications company in Denmark which was split into two separate companies. YouSee currently ...

Croatian Radiotelevision ''Hrvatska radiotelevizija'' (abbr. HRT), or Croatian Radiotelevision, is Croatia's public broadcasting company. It operates several radio and television channels, over a domestic transmitter network as well as satellite. HRT is divided into thr ...

RTV Slovenija Radiotelevizija Slovenija ( en, Radio-Television of Slovenia) – usually abbreviated to RTV Slovenija (or simply RTV within Slovenia) – is Slovenia's national public broadcasting organization. Based in Ljubljana, it has regional broadcastin ...

* Skylink Czechia/Slovakia * SRG SSR idée suisse * Cyfrowy Polsat *

Platforma Canal+ Canal+ (formerly Cyfra+ (Canal+ Cyfrowy), nc+, Platforma Canal+) is a Polish satellite A satellite or artificial satellite is an object intentionally placed into orbit in outer space. Except for passive satellites, most satellites have a ...

Viaccess is the 3rd largest conditional access system provider in the world (in 2004). Viaccess is also a subsidiary of

which offers

pay TV Pay television, also known as subscription television, premium television or, when referring to an individual service, a premium channel, refers to subscription-based television services, usually provided by multichannel television providers, b ...

and

DRM DRM may refer to: Government, military and politics * Defense reform movement, U.S. campaign inspired by Col. John Boyd * Democratic Republic of Madagascar, a former socialist state (1975–1992) on Madagascar * Direction du renseignement milita ...

enabled software.
Orca Interactive
is a subsidiary of Viaccess which offers

IPTV Internet Protocol television (IPTV) is the delivery of television content over Internet Protocol (IP) networks. This is in contrast to delivery through traditional terrestrial, satellite, and cable television formats. Unlike downloaded med ...

Middleware since 2008.

References

External links

Viaccess home page
{{broadcast encryption Digital television Conditional-access television broadcasting