How to Encrypt PDF Files with Passwords and Permissions - Foxit PDF Blog
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Brad Selbst Brad Selbst
Posted Jan 22, 2019
How to Encrypt PDF Files with Passwords and Permissions - Foxit PDF Blog

By password-protecting your PDF file, you're using a form of encryption. What that means behind the scenes is that PhantomPDF employs a mathematical key to scramble the information in your PDF file so it can't be viewed.

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