One thing I like to see in most security programs is a warning screen either at first run or whenever the lock button is clicked. There should definitely be a way to disable this to avoid nagging the user (as in the image below).
Another option for the very cautious is to have a backup folder available just in case the password for the encrypted version is lost. So the process would be:
User adds a file to encrypt, enters a password, and clicks the lock button
The original file is sent to the defined backup folder
These are low priority and may be discarded.
One thing I like to see in most security programs is a warning screen either at first run or whenever the lock button is clicked. There should definitely be a way to disable this to avoid nagging the user (as in the image below).
Another option for the very cautious is to have a backup folder available just in case the password for the encrypted version is lost. So the process would be: