To scramble a configuration parameter in a configuration file, add the keyword .encrypted to the configuration. The next time the application starts, it scans the file for unscrambled values and scrambles them, and then saves the updated file to the disk.
The parameter *.pin = 1234 is considered sensitive and therefore should be scrambled. To scramble the parameter, add .encrypted to it:
Example: Encrypt parameter
*.pin.encrypted = 1234
The server will find the unscrambled value and scramble it:
Example: Resulting encrypted parameter
*.pin.encrypted = encrypted:MCa12==
The scrambling will create .seed files that must not be deleted, or the scrambled value can not be unscrambled.