03-29-2009
Interesting.
I did once thought about getting a smartphone some months ago. I was neither thinking about working nor surfing on the road. Rather, I have bought some ebooks (PDF) in the past that I appreciate a handy reader so that I can read on the road. However, even the model with the largest screen (3.8" is the largest I know of - a bit larger than iphone 3G) still would not allow optimal viewing of conventional A4-sized PDF pages, and so did not justify the ~USD$900 price tag for me. So I dropped the idea.
Probably a netbook is more suitable for me. My laptop is simply too big to carry everywhere. Except missing cellular phone functionality, I think netbook is more "malleable" especially when WIFI and GPRS modules are now builtin in newer models.
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LEARN ABOUT DEBIAN
cam::pdf::decrypt
CAM::PDF::Decrypt(3pm) User Contributed Perl Documentation CAM::PDF::Decrypt(3pm)
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 v5.14.2 2012-07-08 CAM::PDF::Decrypt(3pm)