Yes! You can upload a password-protected PDF. After a file is uploaded, you will need to enter the password into the system.
Step 1: Upload the password-protected PDF.
Step 2: Click on the "More" menu for the file you wish to add a password to
Step 3: Select the "Original File Password" option, enter the password, and click "Update."
The system does not support other password-protected files (like .DOC, .JPEG, .MOV, etc).