set password on multiple PDF'S at the same time

we are using adobe pro XI,

the users are required to set passwords on PDF's that they are working on.

under the windows file system, is it possible to set all pdfs under a folder with the same password?

at the moment that have to set each one individually, but ideally the would like to ba able to batch set 60+ PDFS with the same password.

is that possible?

Thanks