I have followed this exact scenario, though I encrypt it with Crypt::CBC. Here's how my code looks: 
my ($username, $keyfile, $domain) = @_;

open (PASS, "</home/$username/$keyfile") or die "Error: $!\n";
   flock (PASS, 2);
   my @keypass = <PASS>;
close (PASS);    

foreach (@keypass) {
   chomp $_;
}

my $cipher = Crypt::CBC->new($keypass[0], 'Blowfish');
my $dbpass = $cipher->decrypt($keypass[1]);

use DBI qw(:sql_types); 

my $userdatabaseName = "DBI:mysql:$domain";
my $userdatabaseUser = $username;
my $userdatabasePw = $dbpass;

$dbh = DBI->connect($userdatabaseName, $userdatabaseUser,
$userdatabasePw, { RaiseError => 1},) or die "Connect failed: $DBI::er
+rstr\n";

[download]
I also recommend the aforementioned O'Reilly's "CGI Progamming with Perl." And take a look at this node on CGI and passwords.

—Brad
"A little yeast leavens the whole dough."

In reply to Re^2: DBI & CGI Security by bradcathey
in thread DBI & CGI Security by sunadmn

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.