Slashdot Mirror


User: Rufus211

Rufus211's activity in the archive.

Stories
0
Comments
403
First seen
Last seen
Profile
(view on slashdot.org)

Comments · 403

  1. Re:Fluids in games on Making Animated Fluids Look More Realistic · · Score: 3, Informative

    Full water is a ways off since it requires a large area to be simulated (well, you can simulate puddles, but not anything you can swim through). However real smoke animates are on their way since you can easily confine smoke to a reasonably small area. Nvidia's smokebox demo was created to show off the 8800's processing power with realistic smoke rendering, and the results of that demo are already being integrated into games. Movies more information are on the creator's website:
    http://graphics.cs.uiuc.edu/svn/kcrane/web/project _fluid.html
    http://www.gametrailers.com/player.php?id=15381&ty pe=mov&pl=game

  2. Dupe? on World's Densest Memory Cells Created · · Score: 1, Redundant
  3. Re:I for one agree on Microsoft Worried OEM 'Craplets' Will Harm Vista · · Score: 2, Interesting

    I can't find it right now, but somewhere in Microsoft's Windows Genuine Crap stuff they have a tool that'll let you use any windows serial with any version of windows. I used it to upgrade my desktop with a Volume License Key install (and a pirate key) to an OEM key from my laptop (laptop is linux only).

    No idea if it's kosher with the licensing, but you could just use a pirated key on install and then use the tool to force the original serial back onto the machine.

  4. Re:Please improve the source code on HD-DVD and Blu-Ray AACS DRM Cracked · · Score: 4, Insightful
    A quickly glanced at the java sources.
    They are crap. No use of NIO, using Hashtable instead of HashMap and all sorts of strange quirks.
    I predict, a proper version will be *much* faster in decrypting the content.
    Please, someone with time on their hands: Improve this code

    Why would those things matter at all? 99% of your time will be spent in the java-provided AES decription routines. Optimizing a single hash lookup will make about 0 difference.

    Lookup premature optimization is and learn from others mistakes.
  5. Re:What's the fuss,anyway? on HD-DVD and Blu-Ray AACS DRM Cracked · · Score: 2, Informative

    Who said the source was 320p? The source for most movies is a 35mm film print. The current digital cinema spec calls for resolutions that are essentially 1080p and 2160p.

  6. Re:Will every player key be cracked? on HD-DVD and Blu-Ray AACS DRM Cracked · · Score: 1

    If you look through the spec there are actually 2 revocation lists: player and content. Player revocation is so they can blacklist this version of PowerDVD so that it can't be to crack any future movies. Content revocation is so they can blacklist all the current movies so they can't be used in a known plaintext attack against future version of PowerDVD.

    That is assuming anything ever actually gets blacklisted (hello class action lawyers).

  7. Re:Not really cracked, more like circumvented on HD-DVD and Blu-Ray AACS DRM Cracked · · Score: 1
    program's key (it would be in memory a short time probably if well implemented, but ultimately probably gettable, if the program can read it's own key, anyone can).

    True, but they can make it extremely difficult to the point of absurdity. Only ever store parts of the key in memory. Load those parts from memory into registers and generate the key programatically entirely within a register. Once you're done with the key (a few 100 instructions) blow away that register.

    In order to aquire the key you'd have to control the scheduler from within the kernel, schedule a context switch to occure exactly within the vulnerable window, and figure out which register actually contains the value you want. Certainly possible, but once you've gotten to that level of detail you've already reverse engineered the entire player so you can just calculate out the key ourself.
  8. Zip does NOT contain any keys on HD-DVD and Blu-Ray AACS DRM Cracked · · Score: 1
    Just a clarification because BoingBoing is confused. The zip file from doom9 does NOT contain any keys. All it contains is lines like:

    CE6339246F34087AB355681DEB656D23DCD5BD86=Full Metal Jacket | 1-00000000000000000000000000000000
    That's the sha1 hash of the file F:\aacs\VTKF000.AACS, a human readable name, and where the title keys should be. Notice the title key is all 0's, which is obviously wrong.

    Also the fact that BoingBoing ran the program and it slightly changed the file is meaningless. Trying to decode a file with the key "0" will obviously not do what you want.
  9. Re:Not really cracked, more like circumvented on HD-DVD and Blu-Ray AACS DRM Cracked · · Score: 5, Interesting
    As best as I've been able to gather from what I've read today, the very clever fellow just implemented that publicly available decryption routine, and also discovered an (as of yet unreleased) method for obtaining decryption keys. It seems very likely from everything I've read that he is pulling the keys from the PowerDVD program - perhaps they're left unencrypted similar to the original DeCSS obtained a key from the Xing player?


    Exactly. I've read the source code he released and it's less than 500 lines of Java. All it does is open each file on an HD-DVD and call the built-in Java AES decryption functions on each "pack" of HD data. There's a slight bit of handling for the pack format and all, but it's straight from the AACS spec.

    Now the interesting thing I found from the "pre-recorded video book" spec were these two quotes (page 18):
    A licensed product shall treat its Device Keys as highly confidential, as defined in the license agreement.
    and
    Except where otherwise provided for in these specifications, the values used to enable playback of AACS content (e.g. Title Keys and Volume ID) shall be discarded upon removal of the instance of media from which they were retrieved. Any derived or intermediate cryptographic values shall also be discarded.

    So it seems that PowerDVD (or whatever player was used) was fully within the spec to no protect the Title Keys that are assumed to have be swipped by this prog.
  10. Re:Nice pic on Space Plane to Offer 2 Hour Flight around the World · · Score: 1
    That picture is awesome. Reminds me of Elite II. I just hope they didn't forget to buy atmospheric shielding.

    I was thinking the same thing. If you're claiming you're going to revolutionize the industry, at least have a product mockup that looks like it's from this century. As much as we all hate marketing, it makes a huge difference.
  11. Re:DoE research on biodiesel from algae from '78-' on Newest Energy Source — Pond Scum · · Score: 1
    So the price of gasoline in 1998, the year the paper was written, was around $1.25 per gallon. I'll pay $2.50 a gallon for algae fuel anyday.

    The price of gasoline and the price of oil it comes from are related, but not directly. A huge percentage of what you pay at the pump goes to taxes.

    A better comparison would be to crude prices (as some posters above have done), and it's still competative.
  12. Re:Pennies on a Railroad Track, Anyone? on Melting Coins Now Illegal In the U.S. · · Score: 1
    nor do I want to have to take the goddamn time to go to bugmenot.com to get a NY Times uid & pwd

    Ok, then go get the Firefox Extension that does it for you.
  13. Those are americans? on Americans Drove Less in 2005 · · Score: 5, Insightful

    What state has a wide yellow license plate with no graphics? And what's the circular road sign with a red border?

  14. Re:A Perfect Example Of Why Microsoft Is Failing on Final Fantasy XII Review · · Score: 1

    Microsoft has learned the lesson. They own all of the IP in the Xbox360. IBM and ATI created the chips for them and then sold them the *design* - Microsoft entirely owns the resulting design. They send them out to be fabbed where they want, they can do anything they want with it. This includes at a next generation being able to use the previous chips, just like the EE+GS (PS2 chips) in the PS3

    Notice this is completely different from the original Xbox where Intel and Nvidia created the chips for them and then sold them the *chips*. There was a lawsuit because Nvidia was able to shrink the original design to the point that it cost them next to nothing to manufacture anymore, but Microsoft was stuck paying the same price because of contracts. Intel and Nvidia owning all the internals for the original Xbox is backwards compatability on the 360 is so much harder than on the PS3.

  15. Re:i wonder on Some Back Compat Problems For PS3 · · Score: 4, Informative

    Wrong.

    If you look at the pictures there are 4 chips. Cell (the main CPU), RSX (the GPU), EE/GS (the PS2), and an unmarked I/O chip.

    They plan on doing software emulation at some point in the future, and when they do they'll drop the PS2 chip and RAMs from the board. Untill then there's a full hardware PS2 in every PS3.

  16. Re:More In-depth Analysis Here At HotHardware.com on NVIDIA's 680i SLI Chipset Ready for Primetime · · Score: 1

    You have made 2 posts with this account.

    Both posts have the title "More In-depth Analysis Here At HotHardware.com".

    Fuck off, spammer.

  17. Re:Of course the real question is on GeForce 8800GTX Benchmarked · · Score: 1
    Does it do DirectX 10? If so, how well?

    Umm, of course. The point of G80 and R600 (ATI's next) are that they're the DX10 generation chips. However how well it does DX10 is somewhat of a pointless question. As you point out Vista won't be out for "a few months", and no games using DX10 will be out untill a bit after that. By the time that DX10 performance actually matters an incremental spin of the 8800 (psychic, I'm guessing it'll be called the 8850) will be out.
  18. Re:AMD ATI vs Nvidia on GeForce 8800GTX Benchmarked · · Score: 1

    I'm sorry, but does your post have a point? You ramble between Nvidia, ATI, and AMD randomly.

    Also check your basic facts. It's not dual core. What on earth is a dual 384-bit bus? 75nm production doesn't exist except for one DRAM (90, 80, 60, and 45 are the current and future logic steps).

  19. Re:What a shame on Bomb Explodes At PayPal Headquarters · · Score: 5, Insightful
    What a shame the bomb wasn't bigger.

    I may not like some (a lot) of PayPall's policies, and I might wish paypall to go out of business. That said why do the 20-odd hackers that were in the building at the time deserve to be bombed?
  20. Re:It's because of the birthday paradox on The Perception of 'Random' on the iPod · · Score: 1

    Nitpick, the probability is: 1 * 19/399 ~= 1/20. The simple explenation is you pick any song, and then there are 19 songs from the same CD out of the remaining 399 songs.

  21. From the Hourse's mouth on HP to Acquire Voodoo PC · · Score: 1

    Rahul Sood (the president of Voodoo PC) has been keeping a blog for quite a while, and it's an extremely interesting read. Anyway, he announced the merger on his blog with a long writeup:
    [URL]http://voodoopc.blogspot.com/2006/09/project- vampire-is-about-to-fly_28.html[/URL}

    It's not often you have such a long, frank explenation from a president about the future of their company. Very cool.

  22. Re:Gah! Exploitable! on Counter-Strike Opens Weapons Market · · Score: 1

    It's not really exploitable. There are a huge number of CS servers. In order to statistically affect anything you'd either have to a) have your server be churning out orders of magnitude more purchases than other servers or b) run a huge number of unique servers. If valve does any sort of basic spam-blocking A is completely out of the question and B would have to be from lots of different IPs with realistic but slightly skewed purchasing rations. So unless someone really feels like setting up a zombie network of fake CS servers, I don't see there being much of a problem.

  23. Re:Can't say I'm surprised... on Hotel Minibar Key Opens Diebold Voting Machines · · Score: 1
    As for ATM security:

    Well, the first link has absolutely nothing to do with ATMs. The second two are along the lines of what has previously been reported. However this latest breach would be as if someone could walk up, use a $5 key to open the ATM, and walk out with all the money in the system. ATMs, even diebold's, are at least built with descent physical security, unlike these voting machines.
  24. Largest protest group on Facebook Changes Provoke Uproar Among Users · · Score: 1

    The largest group I've seen is "Students against Facebook News Feed (Official Petition to Facebook)." It had 30,000 members 2 hours ago. It's now almost 70,000. Fairly clear that a huge portion of facebook thinks this is a terrible idea.

    Oh, and the creator of this is a CMU grad, and I happen to have a mutual friend with her. She's actually logged into her AIM SN, but I don't feel like messaging her.

  25. Re:Will we know? on First Quantum Cryptographic Data Network · · Score: 1
    (The way we did with the a-bomb -- contests were held for whose work could be classified the fastest.)

    Never heard of this before, but seems resonable. Any sources?