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Find the DZR_CBC Key

The DZR_CBC key is 16 Bytes long string used for track deciphering. You can find it like this:

• Browse the web deezer player
• Open the developer tool (using the F12 key)
• Go to the "source" panel
• Select the webworker source code
• pretty print the source using the {} icon
• search for 0x67] or [0x31 which are the start and end of the two half of the CBC key
• If you feel fancy: re-assemble the 16 bytes in the following order and convert them to ASCII:

[15, ... 3,1]
  ↓ ↖   ↖↓↖↓
[16, ... 4,2]

• If you are lazy: Go to the "console" tab of your web browser's developer tool, past and fill the following snippet:

a=[0x61, ... 0x67];
b=[0x31, ... 0x34];
[].concat(...a.map((c,i)=>[a[i],b[i]]).reverse()).map(e=>String.fromCharCode(e)).join('')

• Add a new DZR_CBC environment variable in your .profile with the key value:

echo "export DZR_CBC=g4............a1" >> $HOME/.profile