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Ask Ed Felten About Watermarking Analysis And More 191

Dr. Edward Felten is in a funny position -- or perhaps not so funny. He's the Princeton researcher who took up the challenge posed by the music industry to find flaws in the SMDI watermarking scheme, but didn't enter into the 'no-telling' bargain (here's the click-through agreement [pdf]) which would have made him eligible for a reward, so wasn't bound by non-disclosure terms. When a scheduled academic presentation on the weaknesses [pdf] that he and his colleages found in SDMI became the object of lawsuit threats from the RIAA, and caused him to cancel the planned presentation, Felten decided to turn the tables, and in cooperation with the EFF, sue them instead, for interfering with his scholarly research. Though he did eventually get to present his research, the legal action is still going. Dr. Felten is at a hearing today in Trenton, NJ, but he's agreed to answer questions from Slashdot readers. Please confine your questions carefully (one per post), and we'll pass the highest-moderated ones on for his answers.
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Ask Ed Felten About Watermarking Analysis And More

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  • by wmshub ( 25291 ) on Wednesday November 28, 2001 @02:37PM (#2625693) Homepage Journal

    What is the best case outcome for the lawsuit that you and the EFF have started. Is it possible that the DMCA (or parts of it) can be found unconstitutional? Or would a "best case" just be a weaking of the DMCA, where for certain purposes people would be allowed to discuss their findings regardless of the DMCA.

    Also, how likely (in the opinion of you or your lawyers) are the different possible outcomes of this case?

  • If you were the RIAA (Score:5, Interesting)

    by Mdog ( 25508 ) on Wednesday November 28, 2001 @02:39PM (#2625710) Homepage
    If you were in the position where you were trying to get a handle on rampant piracy of your work, what (digital) means would you pursue to secure your work?
  • by EFGearman ( 245715 ) <[EFGearman] [at] [sc.rr.com]> on Wednesday November 28, 2001 @02:41PM (#2625726)
    Do you feel that research, your specific research and/or research in general, should be presented in an 'open' forum, if said research is paid for, in part or in whole, with tax-supplied funds?

    This gets down to a licensing issue, on the public being charged twice for the research and it's benefits.

    Eric Gearman
    --
  • Academic Integrity (Score:5, Interesting)

    by efuseekay ( 138418 ) on Wednesday November 28, 2001 @02:43PM (#2625735)
    Hi Prof Felten,

    As an academic myself, I am gratified by your colleagues and your decision to publish your findings instead of claiming the $10000 prize (personally, I find the $10000 "prize" for the HackSDMI challenge measly, and even bordering on insulting.).

    The fact that you are suing the RIAA for intefering into your academic activities indicates your stance on the issue of academic freedom to research. However, the RIAA has deep-pockets, and the fight has just begun. It is not inconceivable that in the future, the academia may come under the control of rich corporations manipulating research for their own selfish ends.

    So, my question is, do you see a bright future for a "free academia" or do you see a academia that willi increasingly be locked down by corporate interests and their lawyers/lobbyists?
  • Lawsuit (Score:3, Interesting)

    by JASegler ( 2913 ) <jasegler.gmail@com> on Wednesday November 28, 2001 @02:43PM (#2625736)
    In looking at the lawsuit, it looks like to me that it hinges on the facts that the click thru agreement did not apply if you never had any intention to try to collect the reward. If that is held up in court. Does your legal counsel believe that the RIAA's fallback assertion of we (RIAA) never meant to sue you hold up in court?

    Or is it more likely that the judge will actually tackle the real issue of the DMCA stifling research (and now foreign visitors presenting papers re: Sklyarov)

    -Jerry
  • A couple questions (Score:5, Interesting)

    by InterruptDescriptorT ( 531083 ) on Wednesday November 28, 2001 @02:44PM (#2625742) Homepage
    Dr. Felten, thanks for your time to answer our questions. We do appreciate it. :-)

    First, when you started your research, did you ever expect that you would be at the forefront of a legal battle to keep academic speech free and protected? Do you ever have any misgivings about taking a high profile in this matter? I know there are some researchers (some of my colleauges included) who shy away from anything legal and would rather just do work that might not be as controversial. It's good to see you getting involved and make sure that our rights as academics are preserved.

    Secondly, what has it been like working with the EFF? I have a great deal of respect for them and have been a member for a couple of years now. I am just curious as to the 'behind-the-scenes' process that you and the EFF lawyers have been persuing as this case pans out.
  • Why? (Score:5, Interesting)

    by joenobody ( 72202 ) on Wednesday November 28, 2001 @02:46PM (#2625752)
    Why'd you do it? I understand why it had to be done - the onerous law can only be harmful - but what made you decide you, personally, should get involved like this to change it? I've kept and eye on the case and you've been very smart about how you're doing everything, so don't try to sneak off with a "it just happened this way."
  • by UberOogie ( 464002 ) on Wednesday November 28, 2001 @02:46PM (#2625753)
    You've had the good fortune to have the support of a major educational research institution in your fight to publish your research. What would your suggestions be to someone in the same legal situation without the resources at your disposal?

    Thank you

  • Was this a trap? (Score:5, Interesting)

    by www.sorehands.com ( 142825 ) on Wednesday November 28, 2001 @02:47PM (#2625756) Homepage
    Was part of the intent behind your actions to trap the RIAA into making a threat so that you could attack the DMCA? Or was the threat from the RIAA unexpected?


    I am not talking about breaking the watermark itself, but the planned presentation and then you not presenting because of the RIAA threat?

  • by Alien54 ( 180860 ) on Wednesday November 28, 2001 @02:48PM (#2625767) Journal
    Given the attempts of the RIAA to ensure encryption of music products, etc. where do you stand philosophically on the issues of Copyright protections, etc?
  • by jgaynor ( 205453 ) <jon AT gaynor DOT org> on Wednesday November 28, 2001 @02:50PM (#2625785) Homepage
    It looks like since you weren't bound by an agreement you have every right to disclose your findings. The RIAA is saying your actions "would subject your research team to enforcement actions under the DMCA and possibly other federal laws."

    I understand the reasoning behind countersuing for disruption of research, but why would you choose this option over a direct countersuit to challenge the DMCA? Your victory could theoretically mean the end of the DMCA by setting a valuable precedent.
  • by rnd() ( 118781 ) on Wednesday November 28, 2001 @02:50PM (#2625788) Homepage
    There are people in the world who can easily pick the kind of lock that most of us have on our front door. Nonetheless, it is illegal to pick the lock in order to gain entry. However it is not illegal to write lock picking instructions, or to present a paper on lock picking.

    (now to my question)

    It seems that if laws against breaking and entering were not enforced, people (particularly those who wanted to protect themselves and their valuables) would be a lot more concerned about lock-picking. What do you think can (or should?) be done to enforce our existing copyright laws so that measures such as the one you are fighting will eventually be unnecessary?
  • by sid_vicious ( 157798 ) on Wednesday November 28, 2001 @02:51PM (#2625790) Homepage Journal
    Dr. Felten,

    I don't think that anyone on this site would argue for an instant that current law has had a chilling effect on researchers such as yourself. The government has forbidden legitimate research into security circumvention tools, essentially sticking its head in the sand and pretending that crackers and citizens of foreign countries won't continue security research themselves.

    That having been said, the events of September 11th really came as a shock to the system for a lot us here. Suddenly, the idea of someone, say, cracking Triple-DES and distributing the crack on the Internet seemed a little more scary than it did on September 10th. If someone (*cough*Al Queda*cough*) were able to read our military secrets, you can bet there would be a real loss of human life associated with it.

    Obviously, discussing flaws in SDMI and publishing a Triple-DES crack are two different balls of wax. So, the real question - do you think anti-circumvention legislation is *ever* warranted? Or is any legislation at *all* simply more sticking our heads in the sand?

    (proudly wearing my DeCSS t-shirt :-)
  • RIAA (Score:3, Interesting)

    by mshomphe ( 106567 ) on Wednesday November 28, 2001 @02:52PM (#2625801) Homepage Journal
    What has been the tenor of the lawsuit with respect to the RIAA, what has their attitude been? For example, has the RIAA offered concessions, or have they been confident in their position?
  • by oooga ( 307220 ) <.oooga. .at. .usa.net.> on Wednesday November 28, 2001 @02:55PM (#2625819)
    All of us here have our own opinions of the RIAA, copy protection, fair use, and the legal actions the RIAA has taken (mostly along the lines of Hillary Rosen must be atomized), but, as someone who has been directly affected by the RIAA's hubris, what's your opinion all this? Do you think the RIAA is legitimatly -- albeit illegally -- interested in protecting the interests of musicians, or do you think their loyalties lie with the producers and labels? Do you think they think they are really the good guys? Do you think they are after money or control?

    One more thing: what do you anticipate will be the end result of the intellectual-property fiasco? Will we be condemned to a world of SDMI and single-use music, or will fair use win out in the end?
  • How much.... (Score:2, Interesting)

    by KingAdrock ( 115014 ) on Wednesday November 28, 2001 @02:58PM (#2625839) Journal
    At what point would you have said screw my convictions, I'm taking the money. 100k? a million? five million?

    No, really!
  • by mini me ( 132455 ) on Wednesday November 28, 2001 @02:58PM (#2625840)
    It seems like every time someone creates a new method to protect copyright works, the protection is bypassed, sometimes within days. Everyone on Slashdot always says if you can hear it, you can copy it and that is very much true, it is just the nature of the technology we have today.

    From a technological standpoint, do you feel the RIAA is wasting thier time or do you think they will reach a certain level of protection that will be worth thier efforts?
  • by Sven Tuerpe ( 265795 ) <svenNO@SPAMgaos.org> on Wednesday November 28, 2001 @02:58PM (#2625844) Homepage
    Dear Dr. Felten,

    From a scientific point of view, is there any evidence that technologies could be invented which enable producers of digital content to control how this digital content is used, and by whom? Should there be a difference between theory and real life, I'd be interested in an answer under real-world assumptions, that is, there is an Internet and people connect to it using devices fully under their own control.

  • by Sonicboom ( 141577 ) on Wednesday November 28, 2001 @02:59PM (#2625857) Journal
    I'm curious to what your take is on copy protections and the history of their circumventions.

    In my view it seems that no matter what copy protection technology comes out, someone makes something to circumvent and defeat it.

    Do you think there will there ever be an "unbreakable" protection scheme?

    And how easy/hard is it to "alter" an image or a sound clip to defeat it's watermark?

    Thanks.
  • by f00zbll ( 526151 ) on Wednesday November 28, 2001 @03:01PM (#2625864)
    Since your encounter with RIAA, have you come across other researchers/projects that are hindered in real academic or corporate research? If so, what is the depth and range of the effect? If not, what do you see as potential unintentional implications, which legislators and companies have no considered, but is possible under the new copy protection laws?
  • Advice (Score:5, Interesting)

    by r.suzuka ( 538257 ) on Wednesday November 28, 2001 @03:01PM (#2625865) Homepage
    I am currently a student and my friends and I all have an interest in "hacking", both hardware and software. Many of the laws that have bound you in the United States will also bind us here in Japan due to the multinational nature of many corporations and agreements on Intellectual Property.

    Do you have advice for the curious student, perhaps someone interested in research or experiments similar to yours, but without any resources to assist him in a court of law? I have had a friend who received threats of a legal nature from a large company and he chose not to continue his research since he did not have the resources for a lengthy legal battle.

    To conclude my question, what would you recommend to the student who wishes to do as you have done, but does not have similar resources?

    Thank you.

    R. Suzuka
  • Leave the country? (Score:3, Interesting)

    by mocm ( 141920 ) on Wednesday November 28, 2001 @03:04PM (#2625887)
    Is it possible that scientist like Dr. Felton who are working in areas where they might come in conflict with the DMCA or similar legislature, will choose to work at non-US universities rather than subject themselves to possible lawsuits and imprisonment in the US.
    And in the same context might foreign scientist refrain from coming to conferences in the US for the same reason.
  • Regrets? (Score:3, Interesting)

    by thesolo ( 131008 ) <slap@fighttheriaa.org> on Wednesday November 28, 2001 @03:05PM (#2625892) Homepage
    Dr. Felten,

    As the old axiom goes, "Hindsight is 20/20". At this point in your battle, having become a public representative of academic freedom and constitutionality, is there anything you regret, any decisions you would have made differently if you could do all of this over again?

    As an avid slashdot reader & EFF supporter, I'd like to wish you the best of luck in your fight! I'm sure I speak for the entire slashdot community when I say that you are truly an inspiration to us all.

    -Mike
  • IP and the Law (Score:5, Interesting)

    by way0utwest ( 451944 ) on Wednesday November 28, 2001 @03:05PM (#2625901)
    Dr Felton,

    Any security protection will deter 80-90%of the people. Of the remaining people, 1-2% will not be deterred by anything and the rest will take advantage of the work of the 1-2%. Copy protection doesn't work in the digital world as well as it works in the analog world. It would seem that perhaps the laws governing the digitial world ought to be different from the analog world, perhaps even different for different types of digital "ideas".

    What is your opinion of the best way to implement copyright, patent, or other Intellectual Property protection for authors while protecting fair use rights of consumers?
  • by DJFelix ( 468187 ) <marler@gmail.com> on Wednesday November 28, 2001 @03:06PM (#2625907) Homepage
    What do you think the realistic impact on illegal music trading would be if the technology you tested was implemented on a widescale basis now that your research is in the public domain?
  • Fair Use (Score:3, Interesting)

    by SirSlud ( 67381 ) on Wednesday November 28, 2001 @03:09PM (#2625927) Homepage
    A social question .. do you feel that the pervasion of technology as a means of security contributes to the number of people who feel comfortable with trying to do something illegal (ie, Napsterize, for example)? Do think disproving the effectiveness of current watermarking schemes is an incentive for the RIAA to combat piracy as a social problem, or simply as an incentive to develop more secure, uncrackable copyright protection schemes?
  • by john@iastate.edu ( 113202 ) on Wednesday November 28, 2001 @03:10PM (#2625934) Homepage
    ...Don Quixote?

    MicroSoft, RIAA, DMCA...

    You're playing with the big boys.

    Where do you see yourself ending up?

    • Karen Silkwood (dead),
    • Ralph Nader (increasingly an irrelevant parody of himself),
    • ??? (surely somebody was successful at windmill-tilting), or
    • Somewhere else?
  • by imrdkl ( 302224 ) on Wednesday November 28, 2001 @03:10PM (#2625939) Homepage Journal
    I've seen some discussion that leads me to believe that the RIAA will eventually want to sell music with individual watermarks, based on individual's keys. (Possibly from the National Identity Card key).

    Is it much more difficult (outside of mass distribution issues) to mark each distinct copy with a unique watermark, than it is to use a single generic watermark?

  • by bstadil ( 7110 ) on Wednesday November 28, 2001 @03:11PM (#2625945) Homepage
    Assuming that you win the case and the court awards reimbursement of legal cost. I read that it is expected to reach up to $2M. How much of that is covered by donation and what will the money be spend on. Further efforts against DMCA or some of the newer Sept. 11 induced attacks of civil liberites?
  • How did this happen? (Score:5, Interesting)

    by DaoudaW ( 533025 ) on Wednesday November 28, 2001 @03:14PM (#2625977)
    First, congratulations on a nice piece of work!

    The RIAA seems clearly out-of-line in their legal attempt to stop the publication of your work. Hopefully your legal case against them will set usable boundaries for Intellectual Property disputes in future.

    My question is: How did the RIAA get themselves in this situation? It appears really stupid for an organization of their stature. Didn't they know where to find a good mathematician when they developed SDMI? With all due respect, surely you weren't the only guy out there who could solve this problem. Then to lay it out on the table and bet the world, it couldn't be read. It just all seems like a comedy of bad management.

    How did it happen???
  • by Vicegrip ( 82853 ) on Wednesday November 28, 2001 @03:15PM (#2625984) Journal
    People have long decried the increasing trend in university scientific research whereby private corporations seem to be dictating more and more what should be the subject of academic interest.
    Now we have a private entity blazanly attempting to suppress research they didn't even finance because it shows critical weaknesses in their technology (even if they make the weak claim they have a disinterested motivation for their action). Not withstanding the incredible poor taste of telling a professor he can't present his work, after having asked for said research to happen in the first place, because the conclusions the work comes to aren't the ones desired. I am left with the bitter cold feeling that we are slowly slipping into a new era of corporate meddling where all manner of 'unpopular' academic research will find itself the subjects of lawsuits because some crafty lawyer has found a new way to extropolate the clauses of the DMCA in such a way that it protects his clients product in some fashion.
    What are your thoughts on this and how do you assess the willingness of america's academia to resist this trend?
  • by Anonymous Coward on Wednesday November 28, 2001 @03:40PM (#2626140)
    Dr Felten,

    It has been my experience that academia tries, or atleast pretends to try to protect intellectual property. I think its really cool you stepped up to the challenge of breaking the watermark, but the course of action seems strange. The industry although bloated and corrupt is trying to protect their intellectual rights, and now you to are trying to do the same thing in a legal battle. So my question is then, why did you take this project on? Was it get your name out there (which is important in academia), to help the industry out (which is why they gave you $10,000), or some reason I missed. It seems strange that you would go public with the watermark information if you are worried about your own rights..

    Thanks
  • by mttlg ( 174815 ) on Wednesday November 28, 2001 @03:50PM (#2626199) Homepage Journal
    What do you see as being the future of digital media: a business model based on consumers having little or no control over the information they pay for and consumers willing to put up with this, or something more similar to traditional rules where a company has little control over its product once it is sold, digital or otherwise?
  • by DG ( 989 ) on Wednesday November 28, 2001 @04:26PM (#2626454) Homepage Journal
    Dr. Felten,

    It seems, from the outside, that you are in a position similar to the "Gambler's Ruin" fallecy.

    (For those not familliar with this, it works like this: Bob goes to a casino. He bets $2 on a game of chance. If he loses, he plays again with $4, and with $8, $16, $32 etc, doubling his bet each time he loses. The idea is that if he wins, he wins back all the money he lost up to that point, and the odds of his losing streak continuing very deep - assuming reasonable house advantage - are pretty small.

    The "fallecy" par crops up in that the casino has access to far greater resources than Bob. Bob's bet gets pretty big in a hurry (and the amount spent is culmulative, until he wins) so the odds are that for reasonable values of Bob's bankroll, the casino can outlast him and take his money in the end)

    The RIAA (and Microsoft, and Hollywood studios, and similar offenders) have very deep pockets, whereas individuals like Dr Felten are close to Bob. The problem seems to be that any of these rich organizations can keep the legal battle going indefinately (spending money on lawyer's fees all the while) and eventually bleed Bob (or Dr Felten) dry.

    Dr Felten, based on your recent experience

    1) Do you agree with this analogy, and

    2) How can you expect not to be bled dry, financially, by the process?

    .
  • by meara ( 236388 ) on Wednesday November 28, 2001 @05:33PM (#2626990)
    How supportive has Princeton been during this process? Have you ever felt any pressure from within not to expose the University to costly lawsuits, or have they been behind you all the way?
  • by catdevnull ( 531283 ) on Wednesday November 28, 2001 @06:09PM (#2627262)
    After reviewing the paper on the the DMSI's
    watermarking techniques, I was curious about
    the effect this has on the quality of the recording--especially in classical music.

    Are there any audible artifacts?
    (even the SLIGHTEST?)

    Do the watermark techniques you've seen affect the timbre or pitch?

    thanks,

    Bill Klemm
    Rice University
  • by Goonie ( 8651 ) <robert.merkel@be ... a.org minus poet> on Wednesday November 28, 2001 @07:23PM (#2627609) Homepage
    As well as Sedgewick [amazon.com] and Kernighan [amazon.com], Robert Tarjan (major graphs algorithm researcher) is also in your rather star-laden department, and according to a friend of mine is currently working on digital watermarking methods.

    Given that you've been so prominent in demonstrating the weakness of watermarking techniques thus far, how do you like his company's chances of succeeding, and has your academic interest in defeating watermarking schemes resulted in some interesting debates in the lunchroom?

  • by hearingaid ( 216439 ) <redvision@geocities.com> on Wednesday November 28, 2001 @08:37PM (#2627905) Homepage

    Dr. Felten:

    Some commentators would characterize the last 25 years or so as a conflict between patent holders (the manufacturers of consumer technology) and copyright holders (the producers of consumer culture). The landmark U.S. Supreme Court case, Sony v. Universal, was set up as typifying this conflict.

    However, it would seem that, many years after the movie studios lost their attempt to prevent consumer VCRs from being sold, the VCR has, if anything, benefitted the motion picture industry.

    Similarly, in the recent Napster case, it is worthwhile noting that after the RIAA successfully shut down Napster, their sales started to immediately decline, and have continued to decline. Many have argued that Napster provided a vastly superior method of music promotion, especially for older records, than radio, and its shutdown has resulted in music fans not finding out about records they might otherwise buy.

    Do you think that this conflict is more imagined than real? In other words, is it more likely to the benefit of the cultural industries to work with technological development, rather than fight it?

  • by autopr0n ( 534291 ) on Wednesday November 28, 2001 @09:38PM (#2628208) Homepage Journal


    We keep seeing cryptographic copy control attempted and broken. DVD-CSS, SMDI, the high bandwidth crypto stuff mentioned on slashdot recently.

    Do you think it's at all possible to create a true playback control system? Perhaps using public key crypto and un-hackable hardware? Or do you believe that it is truly mathematically impossible to do
  • by SiliconEntity ( 448450 ) on Wednesday November 28, 2001 @10:26PM (#2628442)
    The news today [politechbot.com] is that your lawsuit has been dismissed; you have lost this first round. No doubt you will appeal, but it seems that the main legal issue is that the chilling effect has been completely hypothetical. You feared that you would be sued, and you have many statements from other researchers sharing these concerns, but no one has actually been sued yet.

    It appears that until you or some other legitimate researcher goes forward with publication and is sued or prosecuted for it, the courts may think you are just crying wolf to try to get a law you don't like changed. A number of researchers have stated that they now intend to stop working on analyzing content protection. If this court decision is upheld, that will prevent the DMCA from being overturned.

    Are you willing to go forward with research and publication in violation of the DMCA? The only way to stop you then will be to actually use the DMCA against you, and it can finally be tested in court. Will you take this risk when so many researchers are backing away?

  • by t ( 8386 ) on Wednesday November 28, 2001 @11:01PM (#2628611) Homepage
    It seems to me that Jpeg2000 will automatically disable watermarking by its very nature. A key aspect of Jpeg2000 is that it encodes images by bitplanes of significance. You have the option of say cutting out the least significant 10% of the data.(It's currently only still images but I'm sure it'll be easy to extend the technology to everything else.)

    Watermarking on the other hand seems to rely on hiding in the least significant bits of the data. Pretty soon any images that are supplied in Jpeg2000 format or converted to it would have an automagic way of killing any watermarks present.

    I think watermarking has already lost. What do you think of this?

    t.

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