Mac & windows computer both linked to same dropbox account

Hi
My mac automatically synchs with my dropbox account.
I share the same dropbox account with my work colleague. His computer is linked to same dropbox account, but he uses a window machine.
Can a file encrypted by me on my mac, be opened by him (with correct password) on his windows machine, where both mac and windows computer are synched with the same dropbox account?
thanks
Dave
My mac automatically synchs with my dropbox account.
I share the same dropbox account with my work colleague. His computer is linked to same dropbox account, but he uses a window machine.
Can a file encrypted by me on my mac, be opened by him (with correct password) on his windows machine, where both mac and windows computer are synched with the same dropbox account?
thanks
Dave