BD-Video Key Extraction

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Revision as of 16:17, 2 March 2022

This guide is only for Dumping Keys from Blu-Ray Video discs, for dumping the discs see Disc Dumping Guide (MPF).

Method 1: VLC

This guide works on Media Key Block (MKB) version 68 and below. For reference MKBv69 was skipped, and MKBv70 was released around 2019-07.

Software

• VLC Player (install)

Check MKB version before Dumping

• If you ever put a disc with MKBv72 or higher, the key dump method below will never work again in that drive until new processing keys are available. I don't know the technical details but it seems Blu-Ray discs are able to update keys in your drives flash memory. After putting any MKBv72 disc that drive will only be able to decrypt using proprietary software.
• As I understand, you are allowed to put the disc into the drive, only if you playback/decrypt the disc it will update your drive keys. So checking MKB version before playback should be possible.

Dumping Guide

1. Start Here
2. Then create the directory "temp" at C:\ and follow the steps on the same tutorial in Step #1 thread under "Debugging:".
3. Now playback any BDMV with VLC and the key will outputted to the file "c:\temp\debuglog_aacs.txt"

Method 2: Find VUK + DVD Fab

Software

Some versions of Find VUK and DVDFab don't play well together. Your experience may vary.

• Find VUK (unzip FindVUK in a folder with write-access)
• DVDFab (install)

Dumping

• DVDFab should be closed.
• Insert Blu-Ray disc.
• Launch FindVUK.exe, this will automatically launch DVDFab.
• Select "Try" to use DVDFab as a trial.
• A progress bar window should appear as DVDFab is processing the disc, which takes a few seconds. FindVUK should report that it found the key.
• Eject the disc, close FindVUK, close DVDFab (you may have to forcibly kill the process, for me it frequently hangs at that time).
• In FindVUK's OnlineDB_Backup subfolder, an xml file is created for each disc. Example for [1] - D6630E5AA891CE4164A44E627E5672F092D0D717-BDROM (Meta).xml:

<?xml version="1.0" encoding="UTF-8"?>
<Bluray>
 <FileType>BlurayMetaXML</FileType>
 <DiscId Date="2008-04-30">D6630E5AA891CE4164A44E627E5672F092D0D717</DiscId>
 <VolumeId>FC3AAC79EA225AE1448C983C98259319</VolumeId>
 <MediaKey>D3A5957A0219001AB62D31EAC9A10E5A</MediaKey>
 <VolumeUniqueKey>F283D691673583569819F114460A6BF7</VolumeUniqueKey>
 <VolumeLabel>BDROM</VolumeLabel>
 <BDplus>0</BDplus>
 <BusEncryptionEnabled>0</BusEncryptionEnabled>
 <MKBrev>7</MKBrev>
 <MainPlaylist/>
 <UnitKeys>
   <UnitKey Nr="1">562D5AC9EF5925866D7F07BBDC8ADFEF</UnitKey>
 </UnitKeys>
 <MetaTitles>
   <MetaTitle Language="" Manual="1">Metal Gear Solid 4 Bonus Disc</MetaTitle>
 </MetaTitles>
 <Hashes>
   <Hash Type="MD5" File="MKB_RO.inf" Size="1048576">BF8D213F679D3423526B1185B30C63D2</Hash>
 </Hashes>
 <Application>FindVUK 1.09</Application>
 <VolumeSize>24395972608</VolumeSize>
</Bluray>