Invalid encryption of users present in keys.properties upon activation of password

Issue

When activating encryption in [JBOSSFUSE_ROOT]/etc/org.apache.karaf.jaas.cfg, using basic encryption and keeping all the defaults, users configured through the [JBOSSFUSE_ROOT]/etc/keys.properties get messed up: the public key is encrypted and the roles initially set to the user are lost.

Steps to reproduce:

1. enable encryption by changing property encryption.enabled=true from the file

etc/org.apache.karaf.jaas.cfg

2. add a new user by adding the user's public key to "etc/keys.properties" file like:

jluo=AAAAB3NzaC1yc2EAAAABIwAAAQEA5pqXW9pkUDK...pY+Dc8m2lSRueQ==,admin

3. connect to the container with the user 'jluo' using following command either locally or remotely:

> ssh -p 8101 jluo@localhost