You can do something a bit like the way passwords are stored in LDAP servers - write out the parameter as <input type="hidden" name="foo" value="{blowfish}As92Kd..">. Then, just check $val with a regex...

my $string = "Hello";
if ($enc) {
   print '{blowfish}', encrypt_string ($string);
} else {
   print "{unencrypted}$string";
}
....
my $val = $q->param ('foo');
my $actual_val;
if ($val =~ /^{([a-z]+)}(.*)$/) {
   if ($1 eq 'blowfish') {
      $actual_val = decrypt ($2);
   } else {
      $actual_val = $2;
} else {
   $actual_val = $val;   # didn't match - old-style param?
}

[download]

That way, you should be able to re-write the bits you need to take encryption, without breaking the old-style way of doing things, unless {something} appears in your params :)

In reply to Re: How to tell if something is encrypted by kal
in thread How to tell if something is encrypted by Sifmole

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.