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I assume by 'brackets' you mean parentheses? That is, '(' and ')'?

Try using \Q ... \E in your regular expression if you want to 'escape' the string being searched against:

    if ( ! /\Q$search\E/ ) { print "No Match found\n"; next; }
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You can find more by reading perlre.

And another option is to use the qr/\Q$search\E/ syntax, which you can find in perlop.

Update: Fixed wording (thanks for pointing that out, Hofmator++.)

Good luck!

s''(q.S:$/9=(T1';s;(..)(..);$..=substr+crypt($1,$2),2,3;eg;print$..$/

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