If you anticipate needing to work with encrypted files when you don't have an Internet connection, simply enable offline access on Sookasa. Here's how to do it.
Before you go offline, right-click the Sookasa icon in the menu bar, and select Enable Offline Access.
Your offline access keys will then start downloading.
Once the keys are cached, you can work offline with your encrypted files.
For your protection, offline access will be blocked after 48 hours of offline work. This period can be customized through the Settings section of your Account tab on your Dashboard.
The Sookasa application may occasionally request your password to make sure you are authorized to access files on the offline device. This protects your privacy, and prevents access in cases of device loss or theft.