Slashdot Mirror


Anatomy of Cactus Data Shield

meehawl writes: "This is a good analysis by CDRInfo on the current version of Midbar's Cactus Data Shield. This is the format Universal will use to protect its new audio CDs. It's been reported here already that some DVDs effectively bypass this protection, but this article addresses the specific concerns of how best to backup these protected CDs, and how to extract the music data at high quality for download to a personal MP3 listening device."

11 of 182 comments (clear)

  1. Whats the Point? by sargon666777 · · Score: 4, Insightful

    This is really getting old it seems to be a constant battle. They come up with some new means of protection, and we devise a way around it (we as a collective of consumers). They discontinue it, and release a new one, and we work around it again. Besides no matter what they do you can always play it and pipe the sound back in and record it *shrug*. They should just give up and allow people to buy and play the music normally. In the end although there will be some theft they will increase profits becuase I can't imagine anyone will buy these once the word gets out to the general public a bit more. After all who wants a CD you have to fight to play or use in a manner which you have been accustomed when you can jsut buy a good old normal CD. When will they ever learn :-)

    --
    Am I lying when I tell you that im telling the truth? Or am I telling the truth when I say that Im lying?
  2. You've got three choices: by seanadams.com · · Score: 4, Insightful
    • Buy more CDs
    • Steal music online
    • Enjoy the albums you already own
    I'm sticking with #3 until the RIAA gets a fucking clue.

    How can they be so stupid as to think that ANY kind of copy protection will ever prevent their music from getting onto the net? Clearly, they think that someone is sitting there repeatedly dubbing a CD again and again every time something is downloaded. Don't they realize that no matter how difficult they make the initial ripping, it only has to be done ONCE to make a billion copies?

    The only people they're inconveniencing with these tactics are guys like me who would otherwise have paid for the material. It doesn't make it any harder to download the file off gnutella.
  3. Re:scratch those cd's! by eclectro · · Score: 4, Insightful



    You can read the mail after it's been irradiated - but forget listening to these CDs in your computer unless you happen to have the right CD ROM in your computer.

    I suspect that computer CDROM players will become "smart" and eventually this copy protection will be thwarted. Expect to see some DMCA lawsuits against the manufacturers that make them though.

    Meanwhile, all computer users who want to play music on their computer get burned.

    One can only hope that there is enough backlash from consumers that raises awarenes to the issues at stake here. The thing that we have to worry about most is consumer apathy.

    If consuners don't take a stand on this crap before long their going to have deposit quarters into their computer every time they want to listen to a song.

    --
    Take the cheese to sickbay, the doctor should see it as soon as possible - B'Elanna Torres, "Learning Curve"
  4. thinking ahead by athagon · · Score: 5, Insightful

    One would wonder if the record industries/other persons responsible for greater "security" on CDs/DVDs had thought of this:

    With the current system, the following can be done:

    Person A buys CD1. Person A rips CD1 to disk, and distributes MP3s to Person B. Person B likes said MP3s, and buys CD1 for his/herself.

    With "rip proof" technology (at least, until its cracked), however:

    Person A buys CD1. Person A tries to rip CD1, and fails. Person A tells Person B that CD1 sucks because you can't rip it. OR: Person B can't hear MP3s from CD1, so Person B doesn't know whether or not (s)he should buy it, and possibly decides not to.

    With the current system, yes, the industries stand a greater chance of losing money: but they also stand a greater chance (and, as some statistics have shown, this is the case) of gaining more money; given that the majority of Napster users (apparently, and as I did) used Napster to download a few random MP3s to decide whether (s)he should/should not buy CD1. With rip-proof CDs, however, Person A, B, C... won't be able to listen to MP3s from CD1, and thusly won't know whether or not they want to buy it.

    Synopsis:

    It would not seem wise, at least to me, for the industries to err on the side of greater control, and away from the potential for greater sales. Penny wise and dollar foolish, they say...

    --
    I think, therefore, I'm smarter than our president.
    1. Re:thinking ahead by swb · · Score: 5, Insightful

      It would not seem wise, at least to me, for the industries to err on the side of greater control, and away from the potential for greater sales. Penny wise and dollar foolish, they say...

      You're right in suggesting that they want enhanced control. But remember, when you listen to your friend's MP3, decide you like and go out and buy it you're making a purchasing decision about whether or not you like the music based upon your friend's opinion and your personal preferences.

      You're not making it based upon the music industry's marketing campaign. The industry pushes select artists that they have an investment in and want to succeed, and they would rather that you made your decisions on what to buy based upon they're selling, not upon what your friends like or what you find appealing.

      The record companies, as subsidieries of media conglomerates, already have influence over TV, magazines, record stores, and radio stations (through direct ownership or payola). What they don't control is whether your friend tells you about a new disc he got and the music on it.

      I'd agree that it may hurt sales, since a lot of records that have become popular have become popular because of word-of-mouth but I think more and more people are such slaves of the media anyway (radio in shower, in the car, in the office, MTV at home, etc) that many people by and large have lost their ability to generate an opinion of their own anyway.

  5. Come on, guys... by ekrout · · Score: 4, Insightful

    Come on, guys.

    For every technological solution, there's a technological "hack", right?

    Name one anti-piracy tactic employed by any corporation for use in consumer products that has not, is not, and will not continue to be hacked. Still thinking? I thought so.

    Whatever they think of will be hacked in a matter of days (or hours even), no matter how many times or what media/record companies think up a different scheme. If we can get the ones and zeros, then that's it. I'm not sure why more people don't understand this.

    The only question is how long it will take Patti Q. User to get a purdy little Windows app that will rip her new N*Sync CD flawlessly.

    --

    If you celebrate Xmas, befriend me (538
  6. Jargon to English Translation by Skirwan · · Score: 5, Funny
    How does the Cactus Data Shield work?
    Translation: How can I circumvent it?
    As Midbar explains "...The Cactus Data Shield proprietary technology was developed in-house by a multidisciplinary team of experts in the fields of information security, physics, mathematics, electronics, cryptography and algorithms.
    Translation:We got a whole room of smart people who worked on it. Sometimes we race them.
    The technology includes proprietary electronic circuits and software algorithms.
    Translation:It uses computers and stuff. It's like the Jetsons.
    The Cactus Data Shield processor is the engine behind the protection and serves as a platform for encoding original content through robust, multi-layer protection schemes.
    Translation: I wanted to just call it Bob, but the head of marketing has a cactus fetish.
    An engineering solution, the protection schemes are adaptive, easily updated and significantly more robust than software solutions.
    Translation: Even though it's basically done in software we can't say that, 'cause it confuses the VPs.
    The Cactus Data Shield copy protection slightly alters the information on the CD in several ways while maintaining perfect audio quality.
    Translation: We only fucked it up a little.

    --
    Damn the Emperor!
  7. So, if the only CD player I have is a CDROM by pyramid+termite · · Score: 4, Interesting

    ... I can only listen to the music as a 128 bps MP3. Why should I pay 12-13 bucks to do that when I can download 128 bps MP3s for nothing? (And yes, a person who knows how to record from one audio source to a computer can make an MP3 that's indistinguishable from one ripped from a CD.)

    This is a shameless rip-off of the consumer. It's fraudulent, in fact. When I buy a CD, I expect CD quality music, not MP3s. They should have to put a sticker on the case explaining that computer users get MP3 only quality.

    And yes, my only CD player IS a CD-ROM. I won't buy one of these "CDs" ever.

  8. Those who don't learn from history... by martyb · · Score: 4, Insightful

    "Those who don't learn from history are doomed to repeat it." Back in the late 80's it was all the rage by software manufacturers to copy protect their software. (I still have a copy of Lotus 123 from that era.) Various schemes were used:

    • Bad sector(s) on a floppy disk that needed to be present in the drive for the program to run. The disk could not be copied easily using conventional means, but soon people wrote programs to crack the protection.

      Many customers ran into problems when trying to use a legitimately purchased copy as their system reacted differently than expected to the copy protection. The vendors would add increasingly more complicated schemes that never blocked the motivated copier, but DID interfere with legitimate users being able to use the software on certain systems.

    • Printer port dongle that needed to be present in the parallel port. This allowed unlimited copying of the software, but you couldn't run it unless the dongle was in place.

      There was a time when I had a half dozen of these hanging off the back of my PC (imagine 12 inches of dongles sticking out the back; couldn't push the PC against the wall; major leverage against the connector on the PC, etc.) Besides, each dongle interefered somewhat with the timing of the signal going through it... we had a case where a printer attached to the end of the dongle-chain needed to be powered up for the system to boot.

    • Startup questions that required the user to look up a certain value in the documentation and key it in when prompted by the application.

      The thinking was users could easily copy the software, but photocopying the documentation was a much more difficult task that most "pirates" would not go through the effort of doing. I have a game somewhere that came with a "code sheet" printed on red paper that claimed it could not be photocopied. Truly, it was difficult using the black-and-white copiers available at the time, but I persevered and got a usable, albeit poor contrast, copy. (I feared spilling a coffee on the original and becoming unable to play the game which I had legally purchased.)


    In short, users began to revolt and companies eventually began to recognize they were selling fewer copies of their software as people migrated to using non-copyprotected applications.

    Software vendors learned this lesson the hard way many years ago, yet we now have audio (CD) and video (DVD) treading down the same path. I'm waiting to see how long it takes for them to learn this lesson, too.

  9. Re:"backup" audio CDs for "personal" use? by Lumpy · · Score: 4, Informative

    I'll probably be marked as a troll for this but...

    Screw you, asshole.

    I have a plethora of mp3 audio playback devices. My car, home and portable personal devices. These devices have been on the market for over 4 years now and sold with high visibility advertising, so you know for a fact they exist and people are using them. Yes, I rip everything to mp3 so I can listen to it MY WAY, on MY EQUIPMENT, in my home and elsewhere. I place the CD I bought in a locked cd storage cabinet and that's where it sits until it's needed again. Now let's look at something else, what about the phillips CD recorder, compiler. Many more people with these or their computers like to make compiliation cd's. for their own personal use.

    I am sick of your type of self-ritious attitude that marks everyone with an mp3 playback device, a cd burner, and linux or other non MS operating system as the pirates of the Carrabiean or Evil thieves. the cd's I bought ar my property, I can listen to them how I want, and I will...

    and my atitude is the attitude that needs to be taken by everyone that hears someone even try to imply what you said... get in their face.

    --
    Do not look at laser with remaining good eye.
  10. Proper terminology by thumbtack · · Score: 5, Insightful

    The proper term is CORRUPTED, not copy protected.They do not conform to Red Book Standards.

    Congressman Rick Boucher of VA has written a letter to the IFPI and the RIAA suggesting that under the AHRA this may illegal and asking for explanations of the methods used. Under the AHRA there is a 2% surcharge on every CD recorder sold in the US at the wholesale level (See section 1004), that goes to the RIAA, just as there is a 2% surcharge on "Music" designated CDR media.

    In addition Philips refers to these corrupted discs as "silver disks with music on them, but which do not resemble CD's" See this article

    Boycott-riaa and Fat Chucks are maintaining a list of the corrupted CDs. Also, Check out the Home Recording Rights Coalition