To access your Amazon S3 storage within DiffPlug, you must first set up your AWS credentials. This will require using the KeyRing. If you haven’t setup your KeyRing yet, DiffPlug will automatically walk you through the initial setup. More information on the KeyRing is available in the KeyRing manual page.
To setup your AWS credentials, go to the Help menu and select Preferences - Filesystems - Amazon S3:
Type your AWS Access Key. Next, enter your secret key using the KeyRing by clicking the key icon and entering your AWS Secret Key in the displayed dialog.
Click the Save button. You can test your AWS credentials by clicking the Test AWS Key button.
Once your AWS key is valid, you can access the S3 filesystem in the same way as your local disk.