Security of Advanced Access Content System: Difference between revisions

Revision as of 10:43, 27 January 2022

Revision as of 00:13, 4 September 2022

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The '''security of [[Advanced Access Content System]]''' (AACS) has been a subject of discussion amongst security researchers, high definition video enthusiasts, and consumers at large since its inception. A successor to [[Content Scramble System]] (CSS), the [[digital rights management]] mechanism used by commercial [[DVD]]s, AACS was intended to improve upon the design of CSS by addressing flaws which had led to the [[DeCSS|total circumvention of CSS]] in 1999. The AACS system relies on a [[Tree_Tree (set_theoryset theory)|subset difference tree]] combined with a [[certificate revocation list|certificate revocation]] mechanism to ensure the security of high definition video content in the event of a compromise.

Even before AACS was put into use, security researchers expressed doubts about the system's ability to withstand attacks.

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| date = 2007-01-26

|accessdate=2007-05-02

|work=[[BBC newsNews]]}}</ref><ref>{{cite web

| last = Block

| first = Ryan

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|accessdate = 2007-05-02

|date=2007-05-02

|work=[[BBC newsNews]]}}</ref>

{{DetailsFurther|AACS encryption key controversy}}

[[Cyberlink]], the company which sells the [[PowerDVD]] player, stated that their software could not have been used as part of these exploits.<ref>{{cite web

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|archivedate = 2007-09-27

}}</ref>

but they will release no details on their implementation. Users at Doom9 claim that the program makes use of the host certificate of [[PowerDVD]] version 6.5,<ref> {{cite web

| url = http://forum.doom9.org/showthread.php?t=122272

| title = AnyDVD method of operation

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| date = 2007-02-15

| author = evdberg

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

but SlySoft has claimed that the program would be unaffected by the AACS revocation system.<ref>{{cite web

|url = http://forum.slysoft.com/showpost.php?p=15263&postcount=10

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| colspan="3" | Never used<ref>{{cite web |url=http://forum.doom9.org/showthread.php?p=1009643#post1009643 |title= New Processing Key found!! (MKB v3 is now open) |accessdate=2007-11-02 |author=aKzenT |date=2007-06-01 |work=doom9.org forums}}</ref>

|-

| [[AACS_encryption_key_controversyAACS encryption key controversy#2007|3]]

| [[The Matrix Trilogy|The ''Matrix'' Trilogy]]

| 2007-05-22

| 2007-05-17<ref>{{cite web |url=http://www.engadgethd.com/2007/05/17/newest-aacs-circumvented-the-matrix-trilogy-set-free/ |title=Newest AACS circumvented: The Matrix Trilogy set free |accessdate=2007-11-02 |author=Thomas Ricker |date=2007-05-17 |work=engadgethd.com}}</ref>

|-

| [[AACS_encryption_key_controversyAACS encryption key controversy#2008|4]]

| ''[[Transformers (film)|Transformers]]'', ''[[Spider-Man 3]]''

|

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| colspan="3" | Never used<ref name="forum.slysoft.com">{{cite web |url=http://forum.slysoft.com/showthread.php?t=15550 |title=AVP: Requiem/Alvin and the Cipmunks logfiles |accessdate=2008-04-09 |author= |date= }}</ref>

|-

| [[AACS_encryption_key_controversyAACS encryption key controversy#2008|6]]

| colspan="3" | Never used<ref name="forum.slysoft.com"/>

|-

| [[AACS_encryption_key_controversyAACS encryption key controversy#2008|7]]

| ''[[Alvin and the Chipmunks (film)|Alvin and the Chipmunks]]'', ''[[Aliens vs. Predator: Requiem]]''

| 2008-04-06<ref>{{cite web |url=http://forum.slysoft.com/showthread.php?t=15550 |title=AVP: Requiem/Alvin and the Cipmunks logfiles |accessdate=2008-04-09 |author= |date= |publisher=}}</ref>

| 2008-04-11<ref>{{cite web |url=http://forum.slysoft.com/showthread.php?t=15698 |title=AnyDVD (HD) 6.4.1.1 released |accessdate=2008-04-11 |author= |date= |publisher=}}</ref>

|-

| [[AACS_encryption_key_controversyAACS encryption key controversy#2008|8]]

| ''[[The Forbidden Kingdom]]''

| 2008-08-26<ref>{{cite web |url=http://forum.slysoft.com/showthread.php?t=19612 |title=The Forbidden Kingdom (2008) - MKBv8 - Update server down? |accessdate=2008-04-09 |author= |date= |publisher=}}</ref>

| 2008-08-26<ref>{{cite web |url=http://forum.slysoft.com/showthread.php?t=19612 |title=The Forbidden Kingdom (2008) - MKBv8 - Update server down? |accessdate=2008-04-11 |author= |date= |publisher=}}</ref>

|-

| [[AACS_encryption_key_controversyAACS encryption key controversy#2009|9]]

| ?

| Approximately 2008-09-03<ref>{{cite web |url=http://forum.slysoft.com/showthread.php?t=19806&highlight=MKBV9 |title=Blu-ray YELLOW DRAGON'S COLORS Read Error |accessdate=2009-03-28 |author= |date= |publisher=}}</ref>

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|accessdate=2009-03-28 |author= |date= |publisher=}}</ref>

|-

| [[AACS_encryption_key_controversyAACS encryption key controversy#2009|10]]

| ?

| ?

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| ?

|-

| [[AACS_encryption_key_controversyAACS encryption key controversy#2009|12]]

| ''[[Body of Lies (film)|Body of Lies]]'', Baraka

| 2008-10-09