You can find the Dynamic Data Masking configuration files in the following location:

<Dynamic Data Masking installation>/cfg

The config.properties file contains the configuration parameters of the Dynamic Data Masking Server and service nodes in the Management Console.

The config.cfg file contains information on domain, database, and security rule set nodes in the Management Console. The config.cfg file is binary and you must not edit it. The config.cfg file and the public key file, config.pbk, have a digital signature. Dynamic Data Masking updates the digital signature when a user performs an operation on the Dynamic Data Masking Server through the Management Console. If Dynamic Data Masking cannot verify the public key against the configuration file, the Dynamic Data Masking Server writes an error message to the server.log file and does not start.