[Q] How to decrypt sd card topic

Hi ,
here is my problem:
I wanted to install a new rom , so first i have to unlock my bootlaader .
I do this but before that , i do not back up all my data (yes, i was stupid ...). of course i have a back up of my msg and contact and ...
in my sd card .
After booting from unlock boot loader i see that my phone has been reset and all of my data looses.
The problem is that my sd card encrypted with a password so i can't view its content nor connect it via mass storage to pc
to copy my data.
So is there anyway to restore sd card because i have my sd password ?
I just want to decrypt the sd card or something that i can restore my data in sd card.

Best Regard