Note
In order to mount the Synology encrypted folder we need to install ecryptfs-utils
mount -t ecryptfs /media/DISK/@NAME@ /media/NAME
Answer the questions as follow:
Passphrase: - (Password used when creating the encrypted share on Synology NAS)
Select cypher: ... - aes
Select key bytes: ... - 32
Enable plaintext passthrough ... - no
Enable filename encryption ... - yes
Filename Encryption Key ... - confirm with ENTER
Would you like to proceed with the mount ... - yes
Would you like to append sig ... - no
The decrypted files can be accessed via
/media/NAME
Source:
http://www.synology-wiki.de/index.php/Wiederherstellen_verschl%C3%BCsselter_Ordner