Discret 11, the French TV encryption of the 80s

(fabiensanglard.net)

143 points | by adunk 12 hours ago

13 comments

  • kangs 6 hours ago
    When i was a kid, my dad had a Mac with the A/V PAL-SECAM cards. Hooked up a make-shift copper wire antenna and wrote a decoder with the free codewarrior cd folks gave me at Paris' Mac convention (we were 12 and crazy I guess). Good opportunity to learn powerplant and c/c++.

    I ended up brute forcing most of it as I did not really understand what I was doing, but it turns out, with enough time, you get things going.

    Wish the pages were still up, I lost that software long ago, and I'm sure my code was garbage (not that its much better today, but at least I can blame Claude..) and fun to read.

    The 90's were fun.

  • ritonlajoie 12 minutes ago
    Good memories on the #secafrance irc channel getting the update codes from time to time to reprogram the home made security cards for official 'decodeurs'
  • time4tea 5 hours ago
    Super interesting article.

    Didn't operate for long? 1984-1995 - its long enough. Still remember seeing those scrambled programs in France.

    At the time in UK, lets say 87-92, the concept of paid tv over the air was incredible. Satellite existed, but wasn't very prevalent.

  • dtsykunov 3 hours ago
    The canal+ bumper jingle mentioned in the article goes incredibly hard. It's a shame we don't see anything like this on modern big tv.

    https://fabiensanglard.net/discret11/jingle_clear.mp4

  • charles_f 6 hours ago
    If you had enough motivation, you could learn to decode the picture by squinting, and understand the audio by enough exposure. That came very handy to many a teenager on late Saturday evenings.
    • whynotmaybe 6 hours ago
      Or supposedly you could shake a strainer in front of your eyes.

      Still supposedly, the hardest part was finding the strainer in the kitchen without waking everyone in the house.

      And the saddest part was discovering that it didn't work.

    • TacticalCoder 4 hours ago
      > That came very handy to many a teenager on late Saturday evenings.

      GP is referring to Canal+ who'd play that one weekly porn movie on saturday evening.

      Us kids from the eighties could watch like 30 seconds unencrypted, than the scrambling would start.

      We'd still watch the movie ; )

      • amiga386 3 hours ago
        In the UK we had the Red Triangle: https://en.wikipedia.org/wiki/Red_triangle_(Channel_4) where we stayed up late for the hope of some sexy fun times, and we were exposed to culture and not nearly as much nudity as we had hoped for.
      • koolba 4 hours ago
        > GP is referring to Canal+ who'd play that one weekly porn movie on saturday evening.

        As an Anglophone it counts as taking a 1-credit foreign language class.

  • athrow 6 hours ago
    In Poland Canal+ was encrypted like this: https://www.youtube.com/watch?v=Z83bIGiRVy4

    I'm guessing it's a latter version?

    • jtarrio 6 hours ago
      Yeah, that's the Nagravision that the article mentions at the end.

      There were programs that could use a TV capture card and decode it in real time on a 486DX2. They worked pretty well (I felt ok using it because we already had Canal+ but it was on the living room TV and my computer was on the opposite side of the house.)

      • septune 1 hour ago
        "meuh meuh TV" was a famous one
  • amiga386 8 hours ago
  • dtagames 9 hours ago
    An ancient Easter egg is revealed at the end of this interesting article. The "all free" code was `1337` or "leet" in leet!
    • tclancy 8 hours ago
      Not quite. The T is silent.
  • eloisant 8 hours ago
    My father was in electronics and schematics of pirate decoders were being passed around between friends/colleagues (this was before the web!) He got the schematics and built one.

    Later in the 90's, when TV cards became cheap enough I got one for my computer then there were software to decode the signal.

  • kotaKat 8 hours ago
    Asking for "TBA 970" delay chips in electronic stores prompted employees to offer the full list required to build a "decodeur pirate"

    Good ol' civil disobedience. Love it.

  • BiteCode_dev 4 hours ago
    > Piracy became rampant. Asking for "TBA 970" delay chips in electronic stores prompted employees to offer the full list required to build a "decodeur pirate". The encryption system was updated to Nagravision encryption in 1992 and Discret 11 was retired by 1995.

    We had one in the house. Very cheap and easy to get from north africa. Upgraded encryption was quickly matched with upgraded piracy. Then canalsat came along and you needed a memory card to keep your pirating hardware up to date, but it was still ok.

    Now I don't watch TV, and DRM in browser doesn't seem to have been broken the same way.

    But it doesn't matter because things like stremio give you the catalogs of all streaming services for free.

    Seems like piracy never dies.

  • anthk 3 hours ago
    Spaniard there. We didn't need C+ for anime as local regions with languages distinct to Spanish got original DB and several more animes (Captain Tsubasa, easy choice for Europe), Doraemon et all.

    In the 90's only the poshy people or university students (and OFC bars for soccer matches) could afford the monthly subscription. That was true until the mid-late 90's where cheap Avermedia TV tuners for PC (and Pentium MMX processors) could decode the nagravision streams for the cheap. And, yes, they mainly were used for porn and soccer matches, and some Hollywood blockbusters.

    That died in from 2002/3 where cheap broadband was found everywhere and peple used P2P platforms like crazy.

    Under GNU/Linux I remember XawTV-Nagra and Alevt for Teletext.

    EDIT: it was XDtv, not XawTV. Good times, and often it was more interesting to decode stuff than actually watch it.

    • prmoustache 1 hour ago
      Most Animes in France were on TF1, not on canal+.
  • breakingcups 8 hours ago
    [2020]