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On Sun, 18 Dec 2011 10:49:34 +0100, David Haller wrote: |
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> >You also don't have the hardware to create them. CSS keys are stored |
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> >on a separate area of the disc, an area that is not available on |
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> >DVD-Rs, which is why you cannot copy a CSS-encrypted DVD with dd, it |
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> >copies the encrypted data but not the decryption keys. |
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> |
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> Sure they can be read and copied with ddrescue. On some disks at |
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> least. This one, I copied with ddrescue: |
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> |
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> $ xine dvd://${PWD}/some_rather_recent_dvd.iso |
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> This is xine (X11 gui) - a free video player v0.99.6. |
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> (c) 2000-2007 The xine Team. |
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> libdvdread: Using libdvdcss version 1.2.11 for DVD access |
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> libdvdcss error: failed to open raw device, but continuing |
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> |
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> libdvdread: Attempting to retrieve all CSS keys |
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> libdvdread: This can take a _long_ time, please be patient |
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> |
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> libdvdread: Get key for /VIDEO_TS/VIDEO_TS.VOB at 0x00000130 |
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> libdvdread: Elapsed time 0 |
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> [..] |
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> |
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> and the xine plays the .iso as usual. On the other paw, there's other |
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> discs where 'ddrescue' just causes those "scrambled sector" messages, |
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> but the images made with k3b works just fine: |
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I didn't say you can't read then, I said you can't write them, because |
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the key storage area is not writeable on DVD-R discs. |
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Yes, Joerg, I know people with your connections can get special discs and |
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drives, but for standard consumer hardware and media, what I said was |
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true. |
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-- |
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Neil Bothwick |
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|
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We shall shortly be landing. Please return your stewardess to |
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the upright position. |
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