This repository contains the necessary PHP and Bash scripts to re-encrypt (most of) the contents of the Firefly III database.
Please edit the reencrypt.sh script with the database connection data of your Firefly III installation.
Then, run the script, e.g. with /bin/bash reencrypt.sh.
You need to have PHP installed, but you probably have it already, if you used to run Firefly III on the same machine.