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11th January 2007, 03:41 | #543 | Link |
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WinDVD has a plugin that allows it to play HD-DVD and Blu-Ray discs. The plugin is available but they state on their site that:
HD DVD and Blu-ray Playback Support:It is already available but they seem to be making it hard to get the plugin. Regarding the player key, there are only three scenarios (only if the player key is leaked): 1. Players each have an individual key. Revoking one player's key means no consequences for everyone else, but if many are cracked, the 1MB revocation table on HD-DVD discs will fill up rapidly.2. Each brand/version of a player has only a single key. Revoking this key means a large number of people will be very angry, file lawsuits, etc.3. Groups of 50-1000 players each have a unique key. Revoking this key means significant groups of people will be very angry, file lawsuits, etc. |
11th January 2007, 04:51 | #544 | Link | |
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11th January 2007, 05:37 | #546 | Link |
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Instructions on how to buy WinDVD 8 HD from intervideo.co.jp are here:
http://www.avsforum.com/avs-vb/showt...&&#post8871286 |
11th January 2007, 05:49 | #547 | Link |
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Thanks Warren,
I just bought WinDVD 8 HD (Jap) and am downloading right now. I will update you with results (if any). I will also put it up for download on torrentspy for those interested. I will post the link when i have. This might speed up things a bit Last edited by Janvitos; 11th January 2007 at 08:54. |
11th January 2007, 07:12 | #548 | Link | |
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I can see it now really....any .ISO or some other version that is labeled "HDDVDUnlock.*" I hope that someone is able to test this theory out in due time and minimal cost (Emulate and burn minimal time please! Save yourself the $$$$) |
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11th January 2007, 07:31 | #549 | Link |
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Unfortunately i can't post the link but you can easily find it on mininova.
Hint: Do a search for "windvd hd" Make sure you install it in "HD" mode and that you run WinDVD HD when you want to watch an HD-DVD movie. (You will have 2 folders, WinDVD and WinDVD HD) Also, if the program freezes on startup, try starting it by loading any movie file on your computer and then switching to the HD-DVD movie source. Let's hope this gets us to the long awaited keys. Btw, WinDVD is much nicer / quicker than PowerDVD with HD-DVD playback. Last edited by Janvitos; 11th January 2007 at 09:50. |
11th January 2007, 10:32 | #550 | Link | |
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Update: I found a guide. http://greggman.com/japan/xp-ime/xp-ime.htm Not sure if it works yet. Last edited by calinb; 11th January 2007 at 11:02. |
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11th January 2007, 10:43 | #551 | Link | |
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As a programmer I never doubted Muslix64 claims, since the key always (at some point) will reside in memory, in every software player, otherwise it will not be able to play HD-DVD files at all. |
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11th January 2007, 11:21 | #553 | Link | |
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I should have followed the avsforum guide. I can't read kanji. Last edited by calinb; 11th January 2007 at 11:38. |
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11th January 2007, 11:40 | #554 | Link |
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I have been reading this thread since it begining, and i would like to post my thoughts.
1) As i understand it, actual content on a AACS protected disc is encoded with ONE(1) key, or at most a handful of keys, correct? i could refrase that by saying that there is a AES-128 key that can decrypt content on each AACS protected disk. lets call that "final decryption key". i think that these are the title keys refered in muslix's FAQ. 2) if we manage to hack a drive firmware (if it is needed) and create a program that can read HDDVD or BD sector by sector, bypassing the whole AACS authentication process, then, provided we have title keys, we can decode any disk we want to, regardless of any revocation stuff correct? So, all we need to completely break AACS is a list with title keys for every disk, a program that can extract HDDVD and BD sector by sector, read their structure and decode them using the title keys, and possibly a drive with hacked firmware if such procedure is not allowed by current firmwares. The good thing about this is that title keys need only be extracted ONCE per batch of disks, and posted to a site. Is my line of thinking correct? please comment Related : http://www.freedom-to-tinker.com/?p=1106 Last edited by mixanobios; 11th January 2007 at 12:19. Reason: added link to freedom to tinker blog |
11th January 2007, 13:20 | #557 | Link |
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This has been covered before, but here it is. One more time for the dummies...
Yes there is one key - the volume unique key. Use this to decode the title keys. There's more than one title (video) to a disc. There is one title key for each video. Use the title key to decode the matching video. BTW, the videos are stored as encrypted files on the disc. There's no need to linearly read the each sector of the disc. All you need is the encrypted video file and the title key. The AACS authority can revoke drives, hosts and content. Drive as in the physical optical drive. Host as in the software player on the PC. Content as in the HDDVD itself. They can't revoke volume or title keys. But they can revoke what allows you to get them in the first place IE. drive, software player or disc. All revocation info is stored on the HDDVD. This info is stamped with a version number. Before anything is played back the revocation lists are checked and updated from the info on the disc (if it has a later version). Copies of the latest revocation lists are stored on the HDDVD drive (in flash ram) and on your PC. This means that if you insert a disc with info on it that revokes your drive or your player, it will not play anymore certified content (HDDVDs). There doesn't appear to be anything in the specs to say under what circumstances they would revoke anything. Reality suggests that they would revoke anything which has been compromised. As has been suggested before the most likely to happen is revocation of the software player because it is too easy to obtain decryption keys from. It has also been suggested that under these circumstances the software provider would produce an update for their product which is more secure. This would need to be recertified by AACS (new Host Certificate and Host ID). Once updated it could play HDDVDs again, but you may not be able to get your decryption keys. Check out Figure 4-6 Drive Authentication Algorithm for AACS Here is some more info that explain some of the Revocation process... "the drive and the PC host verify each counterpart is not revoked by checking the Host Revocation List (HRL) and the Drive Revocation List (DRL), respectively. To do this, the drive shall store the most recent HRL it has encountered and the PC host shall store the most recent DRL it has encountered." It gets revocation info (DRL and HRL) from the Media Key Block (MKB) on the disc. First it checks the DRL that the drive is not revoked. Then it checks the HRL that the Software player is not revoked. The latest version of HRL is what is stored on the HDDVD drive in it's NVRAM. "the drive reads an MKB recorded on the media to check if its version is higher than the version of HRL that it has stored in its non-volatile memory. If not, the drive determines to use the HRL in its non-volatile memory for the subsequent drive authentication procedure" Content revocation... "Certified Content may be revoked. When this occurs, corresponding revocation information is added to a Content Revocation List". "Licensed replicators shall include the most recent CRL on each pre-recorded medium that they produce". In the AACS directory there is a file called CONTENT_REVOCATION_LIST.AACS |
11th January 2007, 14:11 | #558 | Link |
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Please dont go public which software-player you used to extract keys!
You can publish the volume key and the title keys, but never talk in public which player you used, because then its easy for them to revoke that players key. Last edited by cyber1; 11th January 2007 at 14:36. Reason: changed to "software-player" to make sure everyone understands... |
11th January 2007, 14:31 | #560 | Link | |
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I'm talking about software-players!, you cant extract volume or title keys from an Xbox HD-DVD player, the decoding take place in the computer when using Xbox HD-DVD player. |
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