Archive for the ‘Encryption’ Category

“Unbreakable” Encryption Works In Real Time Over Long Distances

June 9, 2007

“In the internet age, when 120,000,000 smart people on Digg can see an article about your technology, it takes some real courage to use the term “unbreakable”, but the guys at NIST are doing just that.They say they have built a prototype high-speed quantum key distribution (QKD) system that can perform a theoretically unbreakable “one-time pad” encryption, transmission and decryption of a video signal in real-time over a distance of at least 10 kilometers.”

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Finnish Court Rules CSS Protection Used In DVDs “ineffective”

May 26, 2007

“According to the court, CSS no longer achieves its protection objective. The court relied on two expert witnesses and said that “…since a Norwegian hacker succeeded in circumventing CSS protection used in DVDs in 1999, end-users have been able to get with ease tens of similar circumventing software from the Internet even free of charge. Some operating systems come with this kind of software pre-installed.” Thus, the court concluded that “CSS protection can no longer be held ‘effective’ as defined in law.” All charges were dismissed.”

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Is Tivo Tightening The Noose On Your Data?

May 11, 2007

According to CrunchGear;  “TiVo has developed technology to create a link between a host and a local hard drive using an encryption key to lock down any access by you, the user, unless the code can be correctly identified. This concept builds upon the commonly used technique of a Universally Unique Identifiers (UUIDs) that are created with so many possible combinations “that 1 trillion UUIDs have to be created every nanosecond for 10 billion years to exhaust the number of UUIDs.”

While UUIDs are a general technique, TiVo describes using the SHA-1 algorithm described in the Secure Hash Standard, Federal Information Processing Standard 180-1, National Institute of Standards and Technology (Apr. 17, 1995), that is, if you’re interested in light reading. In short, guessing the key is no easy task.”

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More Bad News For HD-DVD Encryption

May 5, 2007

“Hackers have found a way of circumventing the AACS copy prevention technology used by next-generation DVD disks. Unlike earlier breaks, the latest crack can’t be papered over simply by pushing key revocation updates.”

“The approach bypasses the encryption performed by the Device Keys, so revoking these keys as applied by the WinDVD update.”

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The Electronic Frontier Foundation (EFF) Weighs In On The HD-DVD Key Hysteria

May 2, 2007

Originally mentioned here, Digg users went nuts over some stories being deleted and user accounts being banned when a secret key was posted. The EFF has decided to throw in their 2cents.

Who can sue over the posting of the key? The DMCA entitles “anyone injured by a violation” to bring a civil lawsuit seeking damages (including statutory damages ranging between $200 and $2500 for each “offer”). In addition, if a person violates the DMCA “willfully and for purposes of commercial gain,” a federal prosecutor could bring criminal charges (with the famous exception of the Sklyarov case, however, criminal prosecutions have generally been limited to situations where the DMCA violation was also accompanied by evidence of commercial piracy).”

What about just linking to a place where the key is posted? The courts in the DeCSS case wrestled with the proper test to apply when someone links to a location where a circumvention tool can be found. Ultimately, the district court held that an injunction against linking could be issued after a final judgment if a the plaintiff could show, by clear and convincing evidence,

“that those responsible for the link (a) know at the relevant time that the offending material is on the linked-to site, (b) know that it is circumvention technology that may not lawfully be offered, and (c) create or maintain the link for the purpose of disseminating that technology.””

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All Blu-ray Disc and HD DVD Encryption Defeated by Single Key?

February 18, 2007

“Last December, a hacker named “Muslix64” circumvented HD DVD copy protection, resulting in the release of pirated copies on the Internet. Less than one month later, the same Muslix64, with the help of another hacker, was able to crack the encryption on Blu-ray Discs.

On Sunday, another Doom9 forum poster named “arnezami” presented the next great breakthrough in HD DVD and Blu-ray Disc decryption. Previously, every HD movie needed its own unique key in order to be decrypted; but with arnezami’s discovery, there is one key to rule them all — at least for now, until the Advanced Access Content System Licensing Administrator gets on it.

What arnezami found was the Processing Key, which appears to be the silver bullet in decrypting all existing HD DVD and Blu-ray Discs. Arnezami was armed only with an Xbox 360 HD DVD player and the bundled King Kong movie. Other Doom9 forum contributors posted their keys to HD DVD movies such as The Departed and Spy Game, which were proved decryptable using the Processing Key.”

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