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1. Re: How secure is an encrypted pdf file?
George_Johnson Feb 5, 2013 8:50 PM (in response to FormUser)It would be very hard (take a very long average amount of time) to crack the security with that password and encryption level, but both the "document open" and "change security" passwords should have the same high level of strength since both can be used to open the document. Be sure to use passwords that aren't susceptible to dictionary attacks.
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