The PDF Password Recovery software can be used to
decrypt protected Adobe Acrobat PDF files, which
have "owner" password set, preventing the file from
editing (changing), printing, selecting text and
graphics (and copying them into the Clipboard), or
adding/changing annotations and form fields.
Decryption is being done instantly. Decrypted file
can
be opened in any PDF viewer (e.g. Adobe Acrobat
Reader) without any restrictions -- i.e. with
edit/copy/print functions enabled. All versions of
Adobe Acrobat (including 5.x 6.x 7.x , which features
48-bit,128-bit and AES encryption) are supported.
The standard security provided by PDF consists of two
different methods and two different passwords. A PDF
document may be protected by password for opening
('user' password) and the document may also specify
operations that should be restricted even when the
document is decrypted: printing; copying text and
graphics out of the document; modifying the document;
and adding or modifying text notes and AcroForm
fields
(using 'owner' password). (command line)

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