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Dumping CSS-protected DVD with store encrypted flag issue #705
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Originally created by @mnadareski on GitHub (Apr 14, 2021).
Prerequisites
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Description
While dumping a CSS-protected DVD video with Aaru and using the
--store-encryptedflag, the disc fails to read all protected sectors on the initial dump, though on subsequent retries, it is able to read all sectors.Exact command line used:
Aaru media dump --store-encrypted true --trim false F: "B:\ISO\disc.aaruf"Expected behavior:
Expected the disc to be dumped properly on the first run, barring any disc imperfections
Actual behavior:
Disc only dumped properly on first retry run
Output of command execution with debug output enabled
BREAKING_BENJAMIN_DVD.7z.zip (This is actually a 7zip file but GitHub didn't let me upload it as-is. Just remove the
.zipextension)Media details
DVD-Video bonus disc with an audio CD album
@mnadareski commented on GitHub (Apr 15, 2021):
Logs have been added.
@mnadareski commented on GitHub (Apr 17, 2021):
Follow-up research: having another program, such as DVD Decrypter, open before dumping seems to cause the proper behavior to occur in Aaru.
@mnadareski commented on GitHub (Apr 17, 2021):
After talking with @FakeShemp , the issue was a missing registry entry for enabling decryption. After this was added, everything worked as anticipated.
On request from @claunia, here are the steps that were needed:
Add a new string registry setting namedEnableDecryptionunderHKCU/Software/Claunia.com/Aaruwith a value ofTrue(Windows only)aaru configureand enter "Y" for "Do you want to decryption of copy protected media?"--store-encrypted true --title-keys false