for all users, who use Encrypted Shared Folders must read this article, mandatory
I will start with conclusion from guys, who break the wall:
In this article, you can find no out of the box “we have a tool for that” type of solutions. We demonstrated vulnerabilities in some of the most commonly used hardware-backed implementations of encryption used by major manufacturers of attached storage devices for consumers. As we demonstrated, relying on built-in encryption in network-attached devices manufactured by Synology may leave information vulnerable depending on whether or not the key is stored in the built-in Key Manager.
more here
I will start with conclusion from guys, who break the wall:
In this article, you can find no out of the box “we have a tool for that” type of solutions. We demonstrated vulnerabilities in some of the most commonly used hardware-backed implementations of encryption used by major manufacturers of attached storage devices for consumers. As we demonstrated, relying on built-in encryption in network-attached devices manufactured by Synology may leave information vulnerable depending on whether or not the key is stored in the built-in Key Manager.
more here