Security of Advanced Access Content System: Difference between revisions

Revision as of 21:54, 29 January 2014

Revision as of 14:35, 12 August 2015

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|date=January 2007

| work = Spectrum Online}}</ref>

Concerns about the approach included its similarity to past systems that failed, such as CSS, and the inability to preserve security against attacks that compromise large numbers of players. [[Jon Lech Johansen]], who was part of the team that circumvented CSS, said he expected AACS to be cracked by the end of 2006 or the beginning of 2007.<ref>{{cite web

| url = http://nanocrew.net/2006/01/08/deaacscom/

| title = DeAACS.com

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}}

Microsoft later claimed that the paper contained various factual errors.<ref>{{cite web|url=http://windowsvistablog.com/blogs/windowsvista/archive/2007/01/20/windows-vista-content-protection-twenty-questions-and-answers.aspx|title=Windows Vista Content Protection - Twenty Questions (and Answers)}}</ref><ref>{{cite[[Peter web|url=http://en.wikipedia.org/wiki/Peter_Gutmann_%28computer_scientist%29Gutmann (computer scientist)#Criticism_of_Peter_GutmannCriticism of Peter Gutmann.27s_analysis_of_Vista_DRM|title=Criticisms27s analysis of Vista Analysis}}DRM]]</ref>

While great care had been taken with AACS to ensure that content was encrypted along the entire path from the disc to the display device, it was discovered in July 2006 that a perfect copy of any still frame from a film could be captured from certain [[Blu-ray]] and [[HD DVD]] software players by using the [[Print Screen]] function of the Windows operating system.<ref>{{cite web

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|date=2007-02-24

|work=Doom9.net forums}}</ref>

which are used to calculate the Processing Key, and a Host Private Key <ref>{{cite web

|url=http://forum.doom9.org/showthread.php?t=122969

|title=PowerDVD private key