[Omaha.pm] Crypt::Tea

[Jay Hannah]

Holy crap!

I love Perl, CPAN, and now I also love Peter Billam. -grin-

We painted ourselves into a corner on a huge project with a tiny flaw. 
I thought to myself -- what I really need is some tiny Perl gizmo that 
would allow me to encrypt an integer, let me hand that off to the web 
client's browser (into a cookie), and be able to decrypt it when it 
comes back to the web server. (So they can't jack w/ the integer in 
their browser.) I had never used such a thing before.

5 minutes on CPAN and I stumbled into Crypt::Tea.

    http://search.cpan.org/~pjb/Crypt-Tea-2.04/Tea.pm

My demo program:
----------------
#!/usr/bin/perl

use Crypt::Tea;
$key = '18*71^asdj 1$$![&.={[ 0182312m';
my $secret = "My secret! shhh!";

for (1..20) {
    push @secrets, encrypt($secret, $key);
}
foreach (@secrets) {
    print "$_ -> ";
    print decrypt($_, $key);
    print "\n";
}


Output:
--------------
# ./j.pl
mgb7NpXEhmY_DcnWFs6_thmm8dEmW2zz -> My secret! shhh!
QCOd3vpp6QZjD__c25nJtVlQ_sfT-rMm -> My secret! shhh!
eapzrEU30v1y8Lqo53QW6R51y2QVvA2J -> My secret! shhh!
WKgMDakGJjofJCPcSmsFTKHLvlsllokc -> My secret! shhh!
0f7NbSdS2yxeZGgLEheeN6tiYYfy-kQy -> My secret! shhh!
ECsGzMPflc6WYpZ8RZuiaRE6kyTVMo3Q -> My secret! shhh!
0f7NbSdS2yxeZGgLEheeN5qe-qzfKRjK -> My secret! shhh!
-fpqAgj0cvGtT5pj6NArX1h_62f_eB4T -> My secret! shhh!
eQaegpDVD6Euz-sCJpJN654pl1ZVNpRZ -> My secret! shhh!
rhLplwrT6RYXq-9ihEsWJ3YjH5Wwjb4I -> My secret! shhh!
tW-BhTOg0Z7PxxVZ0mYcBBKb0wayuDik -> My secret! shhh!
jaNmWK5Wm8kYOHBgu7zvLkKc9wMYsH9G -> My secret! shhh!
QW1IuWlaOZ-knID8K3OYmDVqsWiIeMKH -> My secret! shhh!
d0H4kiTESeQzceTQ-AHrD3pXUNhCQucw -> My secret! shhh!
rhLplwrT6RYXq-9ihEsWJ8YUet7WcQAz -> My secret! shhh!
QCOd3vpp6QZjD__c25nJtYTRHuO4pmzY -> My secret! shhh!
-1yP8-h9KABP5MBRp7z08euklmL82YUq -> My secret! shhh!
0f7NbSdS2yxeZGgLEheeN0XMOmcdgmbP -> My secret! shhh!
GQj85LnrKurqMeqOJ3aUA8btA2aLPpYX -> My secret! shhh!
VaM4A7NzxkxCyeJi7F1F3bnsWtq7FMuX -> My secret! shhh!

Elapsed time: 30 minutes, including this email.

Awesome. I love Perl + CPAN.

Thanks Peter!

j
Omaha Perl Mongers: http://omaha.pm.org