Obfuscation tools like these only slow down attackers, they can never stop them. Even the best in the game, where there are strong financial incentives on the line, fall to attackers typically in a matter of months.
As such, you should never use them to protect data that needs to stay secret indefinitely (or for a long time), such as keys.
As such, you should never use them to protect data that needs to stay secret indefinitely (or for a long time), such as keys.