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Sony hack reveals AACS 2.0 Ultra HD Blu-ray copy protection details

Posted 20 April 2015 16:39 CET by Jan Willem Aldershoff

Internal Sony documents revealed by Wikileaks show that the Blu-ray Disc Association (BDA) is working on a new version of the Blu-ray copy protection Advance Access Content System (AACS) that requires an internet connection on first playback.

Breaking: AnyDVD’s lead developer doesn’t rule out he’ll crack the AACS 2.0 protection of Ultra HD Blu-ray’s

AACS uses cryptography to control and restrict the use of Blu-ray discs and is the main copy protection of the format.

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Version 2.0 of AACS is currently under development and will be part of the Ultra HD Blu-ray standard. A document called AACS 2.0 Draft  provides several details about this new copy protection. Ultra HD Blu-ray players will support two AACS 2.0 capabilities, one called basic and one called enhanced. Enhanced AACS 2.0 requires an internet connection during the first playback. The connection is used to retrieve a key that’s later stored on the device.

The documents also show that HDCP 2.2 is required to fully enjoy 4K content . Devices that don’t support HDCP 2.2. will get a downsampled (2K) version of the movie.  Ultra HD Blu-ray players will also feature a Trusted Execution Environment where authenticated code can be executed, this appears to be an improved version of BD+.

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Many Sony documents also talk about a Digital Bridge device, this device makes it possible to make a Managed Copy. Managed Copy is something that’s part of AACS for some time and should make it possible to create a backup of a movie (also on USB sticks or HDDs) that can be played on other devices (e.g. tablets and smartphones) but that’s still protected by AACS, making sure the movie can’t be copied infinite. The feature will now likely become a mandatory feature on Ultra HD Blu-ray players.

The documents were obtained during the large Sony hack last year. Wikileaks decided to publish the documents stating, “the work publicly known from Sony is to produce entertainment; however, The Sony Archives show that behind the scenes this is an influential corporation, with ties to the White House (there are almost 100 US government email addresses in the archive), with an ability to impact laws and policies, and with connections to the US military-industrial complex.”

There’s likely much more to find in the Sony Hack documents, join us in our quest to find more!

This post is part of a series on the leaked Sony documents and emails published by Wikileaks



Mollenoh
New Member
Posted on: 20 Apr 15 15:55
So the Myce April joke wasn't very far from the truth, now was it?
1 Agree

olddancer
MyCE Senior Member
Posted on: 20 Apr 15 19:27
Just like buying a book and having to ask the bookstore for permission every time you want to read it.
Obviously the studios want to kill forever physical media.
9 Agree

TSJnachos117
MyCE Resident
Posted on: 21 Apr 15 00:00
This reminds me of the Richard Stallman short story, The Right to Read, which depicts a character named Dan in a serious delema: the girl he has a crush on wants to borrow his computer, and might end up ilegally read is books, which would probably land them both in jail. Also, only the Goverment (and Microsoft) can decide which programs the users in this story can run, as running simple tools including debuggers, or even free operating systems without permission is considered the same as piracy.

We all have to stop buying things from Sony. They musn't get away with killing our freedom any more than they already have.
6 Agree

Anthony1uk
MyCE Senior Member
Posted on: 21 Apr 15 14:55
The thing is when companies do stuff like this. It only supports piracy - as people go out of their way to want to pirate the stuff to stick to fingers up at them.
3 Agree

Seán
Senior Administrator & Reviewer
Posted on: 21 Apr 15 15:17
I wonder if they realise who they are targeting:

1. The honest paying customer who buys the film on this new disc format.
2. The person who downloads the film using The Pirate Bay.

Let's rephrase that: If the DRM decides the device is not authorised to play the content, exactly who does it affect above?

... and they wonder why they have problems controlling piracy.
5 Agree

roadworker
MyCE Resident
Posted on: 21 Apr 15 15:39
Quote:
Originally Posted by Seán
I wonder if they realise who they are targeting:

1. The honest paying customer who buys the film on this new disc format.
2. The person who downloads the film using The Pirate Bay.

Let's rephrase that: If the DRM decides the device is not authorised to play the content, exactly who does it affect above?

... and they wonder why they have problems controlling piracy.


Perfect analyse!!
2 Agree

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