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New AACS Crack Called "Undefeatable"
Tuoqui writes "With all the focus on the infamous hexadecimal number, people may be ignoring a bigger weakness in the AACS armor, which emerged two weeks ago. Some hackers have figured out how to crack AACS in a way that cannot be defeated, even by revoking all the keys in circulation."
I'm just enjoying my coffee, and suddenly I'm faced with an article about somebody's crack!
Nothing for you to see here. Please move along.
Huh, looks like the new strategy is issuing DMCA Takedown orders against anyone who suggests that it is undefeatable...
Summation 2
"I reject your AACS crack and substitute my own"
Blu-ray will be effected too, since it uses AACS. Of course, Blu-ray has an added layer of protection which they've never actually used before. This will prompt Sony to tout Blu-ray to studios as a solution to the crack. It will also prompt Sony to cry when, exactly 5 minutes after it's first used, a hacker cracks it too.
SJW: Someone who has run out of real oppression, and has to fake it.
Basically this crack relies on using a Microsoft HD-DVD drive for the XBox 360, with a special firmware patch (which requires you to remove the firmware chip, flash it, and then solder it back in). With a hacked drive, you can apparently get the Volume ID, which is one of the parameters used in the encryption, directly off of the disc. Normally the Volume ID isn't passed to the host computer, I think.
Anyway, in the bizarro-world that the people who write DRM systems inhabit, I think that this will probably just push them to make the drives harder to "tamper" with; I fully expect that they'll eventually just pot the circuit boards in epoxy or something, to keep you from desoldering the chips.
So if you're interested in this stuff, you might as well go out and get one of the MS drives or other first-gen drives, because I suspect the hacking possibilities may decrease over time; it's going to be these early drives which are the most hackable.
"Ladies and gentlemen, my killbot features Lotus Notes and a machine gun. It is the finest available."
Punishing legitimate customers since it's inception. I got reminded of this again today after not being able to play a DVD in my Powerbook because of region encoding. Funny thing is, this DVD is only really of extreme local interest and any outside interest/sales are negligible - since it's only sold in one region so why do the authors enforce region encoding? Do they not know what it is?
Maybe it's better to pirate afterall. Less hassles that way.
All apologies to those who feel that DRM is still a relevant freedom related issue... But I honestly feel that discussing this is just a drain on resources that could be directed towards more fertile topics.
... we were getting so close to a breakthrough there, I don't know how we got off-track.
Yeah, like arguing the relative merits of Linux versus Windows, or Apple versus MS
"Ladies and gentlemen, my killbot features Lotus Notes and a machine gun. It is the finest available."
If they didn't learn anything from the countless other times this has happened to other forms of DRM, I don't know what makes you think they'll learn anything from this one.
you are attempting to control the flow of ones and zeros in a world where an electronic communication system designed to withstand a nuclear attack is now ubiquitous
you should give up. you've lost, and will keep losing. it's just silly to keep going down this path. there is only more pain in store for you
people will still make movies. people will still make music. it's just that your particular pre-internet business model is now obsolete
go ask the aztecs or the incans if the appearance of new technology was fair to their empires
it wasn't. but it didn't stop technology in the form of gunpowder and sailing ships and metal armor from rendering them obsolete
so it is with you and the internet
sorry
reality is a bitch
intellectual property law is philosophically incoherent. it is your moral duty to ignore it or sabotage it
Keep your eyes to the sky.
a fitting quote might be:-
"what physical science can devise and synthesize, physical science can analyse and duplicate" - e. e. doc smith (one of my favorite authors).
sorry almost forgot the obligatory 09F911029D74E35BD84156C5635688C0!
I think you mean "effect," as in "Grammar Nazis are very effective at repelling women."
SJW: Someone who has run out of real oppression, and has to fake it.
For a real laugh, check-out the formerly-known-as Secret Number as Photoshop art. My personal favorite is #12. The funniest part of all was as I went through the list, an animated ad for Blu-Ray high-definition movie playback popped in after image #9. It doesn't get better than that!
"It's the height of ridiculousness to say for those 9 lines you get hundreds of millions."
You're missing the point here. Everybody doesn't have to do this. One person does this and posts Volume Keys for each new release, allowing everyone else to simply decode with the volume key. If this truly can't be revoked, then it doesn't matter it they make it inaccessible tomorrow. Not until every existing modded player breaks beyond repair would it be secure again.
"It's the height of ridiculousness to say for those 9 lines you get hundreds of millions."
Sony's probably really happy about it, actually. If they can show that HD-DVD is worthless, studios will drop it in favor of the far more DRM-heavy Blu-Ray.
There are things that Blu-Ray could use (they're in the spec) but possibly aren't at the moment.
Basically, HD-DVD only has AACS to protect it. It doesn't have region coding (yet?) or other crap that just didn't work on DVD (someone at the DVD Forum saw the writing on the wall for region codes and just didn't put them in for HD-DVD). Every HD-DVD/DVD combo has the Region 1 logo, followed by "DVD Only" - implying that the region code is strictly for the DVD part. Same goes on the HD-DVD player - Region 1 logo, "DVD Only".
Blu-Ray has the BD+ protection, plus something they call ROM Mark. And of course, region codes. Though, Sony at least tried to be reasonable, and instead of the 9-odd regions of DVD, they reduced it to 3. ROM Mark protection basically says every Blu-Ray disc has to have a fingerprint that tells the type of the disc, and who pressed it. So if a flood of pressed Blu-Ray discs come out, the Blu-Ray association can find out who pressed it, pull their license and shut them down. (And discs without said mark... just don't work). It also keeps stuff like movies from being played if they're on the wrong medium (e.g., BD-R).
Blu-Ray is far more technologically advanced (25GB/layer) than HD-DVD, however, the latter makes use of existing DVD production lines (trivial upgrade, which is why HD-DVD/DVD flipper discs are around), and uses lessons learned about DVDs to produce a better product (like the uselessness of region coding). I suspect that the DVD production tools also underwent just minor changes (support for new codecs and JavaScript) since the HD-DVD releases seem to be of better quality despite the fact that they're 20GB smaller (dual layer BD vs. dual layer HD-DVD) to fit the data... (extras and everything).
Them: "Hey, want to buy a movie?"
You: "Sure, how much?"
Them: "$100,000,000.00."
You: "F*** off."
Them: "Sorry, that was the price to purchase all rights to the movie, including redistribution and royalties. Would you like to buy a subset of those rights instead?"
You: "Sure, like what?"
Them: "How about, the right to public exhibition, and reproduction of media for sale, but no royalties? That'll be just $5,000,000.00."
You: "No thanks, too much."
Them: "How about, the right to public exhibition? Just $500,000.00."
You: "Do I look like I'm made of money?"
Them: "Sorry. How about, the right to private exhibition? Only $5."
You: "Now you're talkin'!"
Them: "So we have a deal?"
You: "Yep." [you hand them a fiver, and they hand you a DVD.]
Them: "Have a nice day."
You: "Hey, wait, this DVD is copy-protected! I want to copy it!"
Them: "Yes, sorry, we didn't sell you the right to do that. If you have more money -- equal to the amount we'll lose on average for each copy-producing customer -- you can buy that right too."
You: "But I paid for this!" [you shake the DVD at them]
Them: "Do you understand that you paid for limited ownership, and that you consented to the limits stated and known to you at the time of sale?"
You: "No, I'm too dumb-stupid to grasp that. I can only handle concrete meanings of the idea of ownership."
Them: "Yeah, we figured. You probably also think HOAs are usurping your god-given right to paint your house pink, eh?"
Certainly the movie studios are obnoxiously attempting to prevent format-shifting, in order to sell you the same movie twice. But that doesn't mean they are violating any of your rights.
FATMOUSE + YOU = FATMOUSE
Sony has the added security feature in that in a few short years, like Betamax, MiniDisc, etc, the Sony backed format will fail, players and computer devices will disappear and the format will be safe from cracking. Security Through Undesired Format.
Politics is the art of looking for trouble, finding it everywhere, diagnosing it incorrectly and applying the wrong fix.
Developing an overblown DRM system: Millions of dollars.
Hiring consultants to tell you it'll really, really work this time after firing all the ones who informed you copy protection is a cryptographic impossibility: Thousands of dollars.
Paying lawyers to send cease-and-desist letters to thousands of websites after the key leaks: $500/hour.
Watching yet another DRM scheme go up in flames shortly after its release: Priceless.
To fight the war on terror, stop being afraid.
The article is a little old, the links to the doom9 forum go to posts from early last month. Within a few days of those posts, there was a link to xboxhackers where they were able to accomplish the same thing without having to patch the firmware, ie, no desoldering.
That's pretty interesting. (In TFA the [hack|crack]er is quoted as saying that one of their goals is to eventually be able to pull the Volume Unique Key from the drive without a hardware hack, but he made it seem pretty far off.) I didn't know they had gotten to that point already.
Slightly OT: I'm really hoping that someone will write up a good introduction to how AACS works, in semi-layman's terms. I've read the official AACS documentation (as much of it is public, anyway) and it's not the easiest thing in the world to get your head around, if it's not your field already. It's obvious these Doom9 guys know their shit, but it would be nice if somebody made some documentation just so the rest of us know what the hell is going on; AACS has so many keys and keyblocks and keys-within-keys-within-keys that I'm never quite clear what exactly they've cracked, or which key is required to read the actual content without any other intervention from the player.
It would really be good if Wikipedia handled that, but right now the AACS article is just a lot of news-bites about the progress of the hacking, and it's very light on the technical stuff (and it's currently locked due to some pissing contest or other).
"Ladies and gentlemen, my killbot features Lotus Notes and a machine gun. It is the finest available."
Or, there's always "Hey, I want to exercise my rights under fair use laws, which have always existed and which you don't have to pay a penny for." Or "Hey, I want to exercise my private-exhibition right (which I paid you for) on a platform of my choosing." Or "I want to make a backup of this, so I can continue to exercise that private-exhibition right (which, again, I paid you for) if my kids scratch the crap out of the original." It's not quite so black-and-white as you put it there.
To fight the war on terror, stop being afraid.
According to MW it's "put-down"
Except for one thing... That's not what they're selling.
They are selling you an entire physical copy, which you can do whatever the hell you want, short of selling copies.
Look at their advertising. They don't say, "Purchase a license to private exhibition today!" They say, "Own it on HD-DVD, today!!!".
General Relativity: Space-time tells matter where to go; Matter tells space-time what shape to be.
I own 2 legitimately, untampered-with DVD players, several computers with DVD drives, and an old XBox. When I rent or purchase a DVD that I am unable to play on any of these devices, nothing makes me more livid (especially when I'm already moody because I'm hungry and planned to eat while watching the DVD). It's actually to the point now where I look at the back of the DVD to see who the publisher is before renting or purchasing it, because I've found my devices especially have trouble with Sony DVDs, of course. I've never even made a copy of a DVD or pirated any DVDs, but I can honestly say that as it becomes more painful for me to legitimately watch my DVDs, I will eventually be driven to circumvent their DRM entirely as that would be less painful of a process. It just pisses me off, but there are some movies I would really enjoy watching and owning a legitimate copy of, but I simply won't spend a penny of mine if Sony's name is on it. Furthermore, Sony's BS about hardware manufacturers needing to keep up-to-date with their latest DRM mechanisms doesn't bode well either - I'm not replacing any of these devices which work perfectly fine with the exception of their purposely fouled media.
Them: "Do you understand that you paid for limited ownership, and that you consented to the limits stated and known to you at the time of sale?"
No because it was never explained to anyone buying a DVD nor is it printed in legible and readable size fonts on the DVD. Also the Advertising done for said DVD is the reverse of that by proclaiming "OWN IT TODAY!"
therefore, your contract is null and void because it was not presented at the time of sale AND your advertising suggest the reverse of what you claim your contract to say.
I would give THEM the benefit of the doubt if they made that fact clear. They do not because they know for a fact it will significantly impact DVD sales in a bad way.
Do not look at laser with remaining good eye.
Wrong. See USC title 17 sections 107 thru 109.
GCHQ Quantum Insert installed. If only our tongues were made of glass, how much more careful we would be when we speak
The sky above the port was the color of bittorrent, tuned to a dead tracker.
"It's not like I'm leeching," MPAAse heard someone say, as he shouldered his way through the crowd around the door of Reality. "It's like my body's developed this massive plot deficiency." It was a Slashdot voice and a Slashdot joke...
Apologies to Gibson.
That's fair to some extent. But remember:
1)Legally, you have a right to make fair-use excerpts. DRM prevents that.
2)Legally, everything goes into the public domain eventually. DRM prevents that.
3)DRM is an enabling technology for censorship (eg "un-leakable documents") Do we really want that?
Lastly, there is NO natural right to the so-called "intellectual property". Society grants a temporary monopoly to artists as a concession.
I think you mean:
Security Through Undesired Format - Intelligent Termination or STUF-IT..
If you mod me down, I *will* introduce you to my sister!
In the most pedantic sense, you're right. Nothing in copyright law dictates that the copyright owner make access to copyrighted works easy. Copyright law merely dictates that there are certain actions that an owner of a copy may not perform without the copyright owner's permission - namely distribution and public performance. The original intent was to insure that only the copyright owner could profit from distribution so that they'd be incented to create creative works.
The bit of the equation that violates my (and everyone else's rights) is the DMCA which says that it's illegal for the first guy to workaround the DRM to tell me and everybody else how he did it (remember, computer software is "speech" in the first ammendment sense). As soon as that law is properly neutered, then all will once again be right with the world.
Copyright law used to work just fine back in the days when making a copy of a copyrighted work was non-trivial. In the digital domain, because making a copy of a work is trivial, it is virtually impossible to police. As we have seen, DRM only makes it slightly more inconvenient for a little while.
Where this leads us, I don't know. The current system of copyrights is irreparably broken. Some new system based on the notion that copies are easy and trivial to create will need to replace it. But the problem there is that you need to compensate artists for their work. The Spiderman movie cost many hundreds of millions of dollars to create. If you want movies like that to be made in the future, then some way to gather those hundreds of millions to do it will need to be found. But there's more to copyright than huge Hollywood productions - it needs to work for the garage band selling CD-Rs at their concerts too.
Reading the slashdot summary, and even the article itself, you may not realize that the Volume ID is just one piece of the puzzle.
The Volume ID is a small bit of data that's stored partially in the lead-in section, and partially in some other non-data area physically on the disc (which I don't fully understand, and apparently isn't available in the public HD-DVD documentation and is only available under NDA). Compliant drives only read and provide the volume ID after completing a cryptographic handshake, which hasn't been broken yet. So now they've made a firmware patch so the drive reads the Volume ID without authorization, without going through the as-yet-uncracked crpyto authorization process.
The purpose of the Volume ID is to prevent copying a disc by simply copying all its data. Because the Volume ID isn't stored within the data sectors, it can't be read normally. Well, that is, without impersonating the software (which hasn't been accomplished yet), or without a modified drive that doesn't require the software to authenticate before reading and returning the data.
That's all. Just one piece, not a full crack of AACS.
PJRC: Electronic Projects, 8051 Microcontroller Tools
Comment removed based on user account deletion
i wonder why they didnt use a zero knowledge protocol http://en.wikipedia.org/wiki/Zero-knowledge_proof to defend them disks, bundling the keys with the cds is only delaying the inevitable
Most users wouldn't be satisfied with being able to prove mathematically that the movie they wanted to watch really was on the disk, but still have zero knowledge of what it actually looked and sounded like.
I have mod points, but what the heck. The slashdot editors strike again - posting stories without checking their facts. I've been following this since the muslix64 hack, so I do know what I'm talking about. I'm quoting the 'hacker' (arnezami - great guy) mentioned in the Ars Technica article:
QUOTE - Original post
In order to decrypt a disc you need the keys the content is encrypted with. These we usually refer to as Volume Unique Keys (although technically VUKs give Title Keys which are used to decrypt the content but this amounts to the same thing). What is important is that VUKs cannot be revoked. In other words: once we have a VUK for a disc then the AACS decryption-protection is broken for that disc. AACS cannot undo this.
So how can we get VUKs?
There are several ways to get VUKs for discs. But none of them are permanent solutions for retrieving all VUKs for all discs (released in the future).
* Get the VUKs out of "old" versions of a Software Player * Get a Volume ID (unique per movie) and a Processing Key (unique per Media Key Block version) and calculate the VUK.
The first method will expire quickly: we can now use WinDVD to retrieve VUKs out of its memory. But when new discs come out they won't work with this old version of WinDVD so you would have to install a new version. Therefore making this method obsolete for new discs.
The second method requires not one piece of information (like taking a single VUK out of the memory of WinDVD) but two pieces of information. We have several techniques now for a drive to reveal the Volume ID of a disc. So this part of the method is permanent. However the Processing Key will change every time they change to a new MKB version. And since we also need this second piece of information to calculate a VUK for a disc we always need to get the new Processing Key out of some player (whether its a Software Player or a standalone). The Processing Key (or better a Device Key) is very powerful though: if found it makes it possible to decrypt all discs released so far (assuming we can also retrieve the Volume IDs of those discs).
UNQUOTE
Moral of the story: We still need the processing key and that can be changed by the AACS, or by the abuse of language, "revoked". So the new AACS Crack is not "Undefeatable".
The only development since the time this article was written is that the firmware doesn't need to be changed anymore for the drive to reveal the VolumeID. There are some standard commands which get the job done.
Sorry to disillusion you, but the Grammar Nazi was right.
effect verb - cause to happen; bring about.
affect verb - 1 make a difference to; have an effect on. 2 touch the feelings of.
(source: Compact OED, www.askoxford.com)
So 'affect' is the closest verb in meaning to the noun 'effect', which is what 'effective' is derived from. Confusing, but that's English for you.
Wow, at least half the replies are trying to be funny. What happened to Slashdot, when did it become a standup comedian-wannabe forum?
It's cool to have some fun, but when everyone is cracking lame jokes about any theme, it just becomes tiring. In most threads, I have to skip about 5 to 10 "Funny" comments to find an "Insightful" or "Interesting". When did everyone become a comedian?
Preferences > Comments > Reason Modifier.
-5 Funny.
There you go.
Good point. Now, quick, look over your head. Do you see something there? Anything? Feel a breeze, at least?
SJW: Someone who has run out of real oppression, and has to fake it.
Not to be outdone, the MPAA is working with filmmakers to ensure that movies encoded onto BlueRay disks will be undesired long before Sony has managed to kill their superior format through stupid business practices. Leading the way is George Lucas who's company, LucasArts, has been the driving force behind many of the technological innovations in movies over the past 30 years. Says Lucas, "Our initial testing has been very positive. Test films like "Episode I" were almost unwatchable. And while the addition of a semi-coherent plot weakened the protection scheme from the two subsequent sequels, we've learned our lesson."
Lucas claims that his proprietary JarJar technology is showing incredible promise and that many of the summer's biggest blockbusters are planning to include this protection scheme. Yet the technology is not only effective for new movies. "One of our biggest markets is in the protection of older movies as they are released onto the higher definition formats. For example, we've added a 10 minute scene to 'Forrest Gump' featuring a conversation between JarJar and the title character which test audiences have indicated is 'more painful than child birth', as one woman put it."
Because Satellite TV companies control the transmission and encryption...
The difference is that for HD-DVD you have both the source and the player, where for Satellites you have only the player and they can change the source to disable whatever smartcard was emulated.
Changing the source for already-shipped HD-DVDs is troublesome, at best.
Security Through Format Undesirability
Stasis is death. Embrace change.
It's cool to complain, but when everyone is making idiotic complaints about slashdot not having the content they want to view, it just becomes tiring. In most threads, I have to skip about 5 to 10 comments where some bitch is whining about how they think there shouldn't be a funny moderation. When did everyone become such a little bitch?
"You're right," Fisheye says. "I should have set it on 'whip' or 'chop.'"
A French grammar nazi! They had a word for people like you, collaborator.