I am looking to encrypt a PDF file with a password.
My question is two-fold:
is there a good software to do that for Mac OSx? I saw Acrobat has commercial software for that, but I am looking (surprise...) for something free -- I want to make very limited use of it.
is the encryption (with password) relatively safe, and is okay to send personal identifying details with, assuming an eavesdropper doesn't know the password? Or are there crackers that can crack such PDFs relatively easy?