Securerly store the Web Console credentials for the boot-time configuration AEM 6.5

Hi

We are not allowed to store the password in plain text on our instances under the following path:
crx-quickstart/install/org.apache.felix.webconsole.internal.servlet.OsgiManager.cfg.json.

We attempted to encrypt the password using /system/console/crypto  and replaced  the paintext value in the configuration with the new encrypted one. However, AEM does not appear to decrypt this value at startup and authenication falls back to the default admin/admin credentials.

Is there a supported way to securerly store the Web Console credentials for this boot-time configuration without using plaintext? 

If not, what is Adobe’s recommended approach for environments where plaintest passwords are prohibited?

Thanks!