Auth::Yubikey_Decrypter(3pm) User Contributed Perl Documentation Auth::Yubikey_Decrypter(3pm)
NAME
Auth::Yubikey_Decrypter - Decrypting the output from the yubikey token
VERSION
Version 0.07
SYNOPSIS
The decryption module does only one thing - decrypt the AES encrypted OTP from the Yubikey. To this, it requires the OTP, and the AES key.
Please note - this module does not perform authentication - it is a required component to decrypt the token first before authentication can
be performed.
#!/usr/bin/perl
use strict;
use Auth::Yubikey_Decrypter;
my $fulltoken = "dteffujehknhfjbrjnlnldnhcujvddbikngjrtgh";
my $aeskey = "ecde18dbe76fbd0c33330f1c354871db";
my ($publicID,$secretid_hex,$counter_dec,$timestamp_dec,$session_use_dec,$random_dec,$crc_dec,$crc_ok) =
Auth::Yubikey_Decrypter::yubikey_decrypt($fulltoken,$aeskey);
print "publicID : $publicID
";
print "Secret id : $secretid_hex
";
print "Counter : $counter_dec
";
print "Timestamp : $timestamp_dec
";
print "Session : $session_use_dec
";
print "Random : $random_dec
";
print "crc : $crc_dec
";
print "crc ok? : $crc_ok
";
FUNCTIONS
yubikey_decrypt
Input : token aeskey
Token - received by the Yubikey aeskey - either the modhex or hex AES key for your Yubikey (contact Yubico if you don't have the AES key)
Output :
$publicID $secretid_hex $counter_dec $timestamp_dec $session_use_dec $random_dec $crc_dec $crc_ok
yubikey_modhex_decode
Input : the modhex code Output : decoded modhex code in hex
yubikey_crc_check
Performs a crc check on the decoded data
REQUIRES
Perl 5, Crypt::Rijndael
Order your Yubikey from <http://www.yubico.com>
BUGS
Please report any bugs or feature requests to "bug-auth-yubikey_decrypter at rt.cpan.org", or through the web interface at
<http://rt.cpan.org/NoAuth/ReportBug.html?Queue=Auth-Yubikey_Decrypter>. I will be notified, and then you'll automatically be notified of
progress on your bug as I make changes.
SUPPORT
You can find documentation for this module with the perldoc command.
perldoc Auth::Yubikey_Decrypter
You can also look for information at:
o RT: CPAN's request tracker
<http://rt.cpan.org/NoAuth/Bugs.html?Dist=Auth-Yubikey_Decrypter>
o AnnoCPAN: Annotated CPAN documentation
<http://annocpan.org/dist/Auth-Yubikey_Decrypter>
o CPAN Ratings
<http://cpanratings.perl.org/d/Auth-Yubikey_Decrypter>
o Search CPAN
<http://search.cpan.org/dist/Auth-Yubikey_Decrypter>
AUTHOR
Phil Massyn, "<phil at massyn.net>"
ACKNOWLEDGEMENTS
Based a lot on PHP code by : PHP yubikey decryptor v0.1 by Alex Skov Jensen Thanks to almut from <http://perlmonks.org> for code guidance
Thanks to Mark Foobar <http://blog.maniac.nl> for reporting the -32 bug on line 91 and 92.
COPYRIGHT &; LICENSE
Copyright 2008 Phil Massyn, all rights reserved.
This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.
perl v5.10.1 2009-12-12 Auth::Yubikey_Decrypter(3pm)