...
If you set the value of the environment variable 'SQ_ENCRYPTION_KEY' to a valid encryption key, all encrypted config values will be decrypted on load. If this environment variable is set PRIOR to installation of squirro already, then all sensitive configuration values will be encrypted with this key and stored in an encrypted fashion in the .ini files. You recognise such a value as it starts with 'CK_FERNELFERNET::'. On usage of the value it will be decrypted automatically.
...