11-28-2010
Unix/Solaris security?
Hello Admins,
I just have a curious question on unix passwords...
As unix passwords are encrypted, so any hacker can took those passwds from etc/shadow and decrypt them using any algorithms....and using decryption, he can get the passwd and easily get into the system.....
so how can unix be so secure as compared to windows...........
I am not talking about any firewalls and networking issue...just about the passwords.........
Thanks,
Solarisadmin
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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)