Recover data from encrypted Z3c with broken screen?

Hi guys,

The screen on my Z3C is broken.
I brought it to a repair shop, but they were unable to repair it, they've tried 4 different displays and the touch-input would not work.
So now i'm trying to recover my data, but i was using the Android encryption.
I can boot the phone into recovery and connect to it via ADB.
Is there any way to unlock and mount the data partition in the adb shell?
Or is there a way to unlock and mount the partition on my linux box if i dump the partition to my computer via netcat?

Thanks in advance!

D6633 TWRP cannot decrypt/mount encrypted volume

hello there,

Z3 D6633 here running 5.0.2 (HK) with TWRP rooted with superSU. Trying to upgrade to the newly released 5.1.1.

The phone had been be Encrypted some months ago and everything is fine. However, when I booted into TWRP to try to patch in 5.1.1, TWRP popped up with a password prompt. I entered the decrypt password (and other passwords I can think of) but TWRP replied with:

Unable to mount storage, and
Failed to decrypt data.

Google tells me there had been some issues with TWRP 2.8.4.1 to 2.8.6.0 unable to decrypt encrypted volumes so I went and grabbed the latest XZdualrecovery 2.8.21 and ran that in. All seemed fine and TWRP was updated to 2.8.7.0. Unfortunately, upon booting into recovery, TWRP still count not decrypt the volumes no matter what passwords I enter.

Does anyone have any ideas to get around this, short of a factory reset..? The SD card is also encrypted so I am trying to avoid factory reset if possible.. :(

Thanks in advance