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Thread: GRIFFIN

  1. #1
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    Default GRIFFIN

    Ce stiti despre acest sistem de codare?
    tot eu...la bine si la greu....

  2. #2
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    Default Re: GRIFFIN

    Quote Originally Posted by vexxato
    Ce stiti despre acest sistem de codare?
    Te referi la tehnologia Griffin folosita la echipamentele iTrip FM pentru Ipod-urile de la Apple

    Au colaborari cu Apple Mac la ceva echipamente...
    Salut Prieteni!


  3. #3
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    E un sistem de codare folosit de operatorii Athina Sat TV si Bulsatcom . Probabil o derivatie/tunning de ****** .

  4. #4
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    Griffin era, intr-adevar, un sistem de compresie audio, pe vremuri. Adica nu chiar pe vremuri indelungate, dar oricum. Nu stiam ca s-au apucat si de video encryption. Nu poate fi un derivat al ******, deoarece mi se pare ca unele pachete folosesc combinatzia simulcrypt iredto 2 + griffin. Cred, in continuare, ca punctul tare al acestui sistem este compresia audio. Si s-ar putea sa fie si unicul punct tare (nu vad de ce unii provider actuali n-ar putea folosi ****** pt. video encryption si griffin pt. audio).

  5. #5
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    Nu cred ca Griffin ca sist de codare se atinge de informatia audio a sirului de transport pt ca asta ar complica si mai mult lantul de decriptare si nu ar aduce nimic in plus ba mai mult totul ar fi mai complicat si in practica acest avantaj al sau ar fi de fapt un dezavantaj pt actualele receivere.

  6. #6
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    Griffin CAS overview

    Griffin CAS is a SimulCrypt DVB Conditional Access System from Nucleus Systems, Ltd. It comprises of a PC/Linux system running the Griffin CAS Server software, and smart-cards for use in the receiving Set-Top-Boxes (STBs).

    At the head-end side, DVB stream in clear form enters a standalone SimulCrypt Scrambler, usually through standard ASI interface. Using the Common Scrambling Algorithm (CSA) and a random Crypto Word (CW), the SimulCrypt Scrambler does the bulk of encryption. This is the heart of all SimulCrypt conditional access systems. CW is sent to the CAS, which by turn encrypts it in a proprietary manner and returns Entitlement Control Message (ECM) for injecting into the output stream. CW is randomly generated in the Scrambler periodically, with Crypto Period of 10 seconds being common. Based on subscription and other information from a Subscriber Management System (SMS), CAS generates proprietary Entitlement Management Messages (EMMs) which are injected by the Scrambler in the output stream, too. Some additional DVB-SI tables are modified and/or generated by the Scrambler.

    Griffin CAS Server provides ECM Generator (ECMG) and EMM Generator (EMMG) for every stream, as well as interface to the SMS.

    Once the scrambled signal is received in the STB, the relevant ECMs and EMMs are sent to a Griffin smart-card. Depending on subscription and other criteria, CW and/or user data are returned to the STB, where the bulk of decryption for the entitled period is carried out by a hardware CSA descrambler.


    Uite si adresa de contact :
    Nucleus Systems, Ltd.
    1 Dospat Street, apt. 1
    Sofia 1606
    Bulgaria
    phone/fax: +359 2 9516972
    email: [email protected]
    Dupa ce am confiscat domeniul liga1.ro a venit randul ligii a doua : http://www.lpf2.ro


    http://www.liga1.ro/ cel mai tare site din lume dedicat fotbalului autohton.
    Vizitati-l si o sa primiti de la mine !

  7. #7
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    Mda un sistem de codare normal asa cum ma asteptam ......nu credeam insa ca e facut de bulgari

 

 

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