Login against Camunda DB JDBC Realm, Decode Exception

Hi,
I use Wildfly 16 and JSF external forms for my processes. I want to deny the access to the jsf forms (for example if someone gets the link from anywhere). I tried it via Elytron Security from Wildfly. That works, but only if I put in the encoded password that is saved in the camunda db. I want to automatically decode it but it does not work. How are the camunda user passwords are decoded? If I look into the camunda database I the following (SHA-512)
grafik

I tried it with simple-digest-mapper, that does not work.

I then tried it with an salted-simple-digest-mapper, but it does not work too.

Can anyone help me? Thanks a lot.
Nicole