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CAM::PDF::Decrypt(3)  User Contributed Perl Documentation CAM::PDF::Decrypt(3)

NAME
       CAM::PDF::Decrypt - PDF security	helper

LICENSE
       See CAM::PDF.

SYNOPSIS
	   use CAM::PDF;
	   my $pdf = CAM::PDF->new($filename);

DESCRIPTION
       This class is used invisibly by CAM::PDF	whenever it detects that a
       document	is encrypted.  See new(), getPrefs() and setPrefs() in that
       module.

FUNCTIONS
       $pkg->new($pdf, $ownerpass, $userpass, $prompt)
	   Create and validate a new decryption	object.	 If this fails,	it
	   will	set $CAM::PDF::errstr and return undef.

	   $prompt is a	boolean	that says whether the user should be prompted
	   for a password on the command line.

       $self->decode_permissions($field)
	   Given a binary encoded permissions string from a PDF	document,
	   return the four individual boolean fields as	an array:

	     print boolean
	     modify boolean
	     copy boolean
	     add boolean

       $self->encode_permissions($print, $modify, $copy, $add)
	   Given four booleans,	pack them into a single	field in the PDF style
	   that	decode_permissions can understand.  Returns that scalar.

       $self->set_passwords($doc, $ownerpass, $userpass)
       $self->set_passwords($doc, $ownerpass, $userpass, $permissions)
	   Change the PDF passwords to the specified values.  When the PDF is
	   output, it will be encrypted	with the new passwords.

	   PERMISSIONS is an optional scalar of	the form that
	   decode_permissions can understand.  If not specified, the existing
	   values will be retained.

	   Note: we only support writing using encryption version 1, even
	   though we can read encryption version 2 as well.

       $self->encrypt($doc, $string)
	   Encrypt the scalar using the	passwords previously specified.

       $self->decrypt($doc, $string)
	   Decrypt the scalar using the	passwords previously specified.

AUTHOR
       See CAM::PDF

perl v5.32.0			  2013-08-15		  CAM::PDF::Decrypt(3)

NAME | LICENSE | SYNOPSIS | DESCRIPTION | FUNCTIONS | AUTHOR

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