engadget.com — It's still early on to tell whether this is actually true, but HD DVD cracker muslix64 is back, and with the help of another anti-DRM cracker, Janvitos, claims to have also broken the Blu-ray's implementation of AACS
Jan 20, 2007 View in Crawl 4
pabsterJan 20, 2007
Now the conspiracy theorists can STFU. It was hilarious to see people attacking muslix64 as some sort of "partisan hacker" for only working on HD DVD.It was inevitable. Both formats use AACS and suffer from the same weak links in the chain. I'll now wait for the Sony fanboys to chime in with "But what about BD+..."
crazymanJan 20, 2007
It's Blu-Ray....douche.
cupofchinoJan 20, 2007
Why don't you thieves pay for your movies instead of pirating them? ...and the managed copy function allows backups to be made of both HD-DVD and Blu-Ray discs so forget about that excuse.
blackadderiiiJan 21, 2007
I think you'll find that people who don't pay for the media, don't experience any effects of DRM.Only people who pay for their media, have any reason to dislike DRM, because only people who pay for it, will be getting DRM - *OBVIOUSLY*.Have you not thought about what you're saying at all?
blazeixJan 21, 2007
Why is KibibyteBrain being dug down? He's right. DVD encryption was cracked very early on in its adoption, making DVD makers support a broken encryption scheme for every DVD made. Blu-Ray disks carry the method for encrypting on their disk, making it so you can change the method for encrypting the data if it gets cracked. This is called BD+.
ottoJan 21, 2007
Unfortunately, this only works as long as they keep the key in memory in an unencrypted form. If they were to simply XOR the key's bytes with some value, then change the decryption algorithm to XOR with the same value during the decryption process, then the key would no longer be visible in a memory dump. This wouldn't affect the speed of decryption at all, since XOR is fast as hell.In other words, this is simply the fault of the player program not using obfuscation techniques. If that player is invalidated and an updated player issued, it would make this sort of attack one hell of a lot harder. Still, some enterprising hacker could reverse engineer the decryption algorithm and figure out the obfuscation method (which wouldn't necessarily be a simple XOR, of course), but it would take more effort than simply brute force searching of a memory dump using known-plaintext.
s1ngular1ty1Jan 21, 2007
Actually, I knew how he did it before he published his method because that is the only way possible to break this kind of encryption. I knew he didn't crack the encryption because AES is world renown state of the art encryption that everybody and their brother has tried to break and have failed.I knew about AES from other sources (Security Now Podcasts like 1 year ago) and I just linked to wikipedia so everyone can see how impossible it is to imagine that anyone will ever break AES outright.Finally, another digg story shows a patent Microsoft had just applied for which outlines methods of handling encryption keys in computer memory so that they can't be stolen like this in the future. So when SP1 comes out no one will be able to do this hack any more, or it won't be as easy. Basically the patent says that the entire key will never be entirely in memory in the clear at once so you would have to piece the key together to do this hack. It would be much much harder or impossible to do.
s1ngular1ty1Jan 21, 2007
Microsoft Patent possibly (actually likely) aimed at trying to stop Blu-Ray and HDVD pirating. <a class="user" href="http://digg.com/software/Microsoft_files_for_patent_to_battle_HD_DVD_decryption_methoids">http://digg.com/software/Microsoft_files_for_patent_to_battle_HD_DVD_decryption_methoids</a>
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