$line_a=0;
$line_b=0;

open(PLAIN, "plain.txt") or die "File does not exist: $!";
while(<PLAIN>){
  @my_a[$line_a] = $_;
  $line_a++;
}
close PLAIN;

open(COUNTER, "counter") or die "File does not exist: $!";
while(<COUNTER>){
  @my_b[$line_b] = $_;
  $line_b++;
}
close COUNTER;

$element1 = @my_a;
$element2 = @my_b;
$i = 0;
$j = 0;

while ($element1 > $i) {
  if ($element2 <= $j){
    $j = 0;
  }
  @my_c[$i] = @my_a[$i] ^ @my_b[$j];
  @my_d[$i] = @my_b[$j] ^ @my_c[$i];
  $i++;
  $j++;
}

[download]
Here the question,
1. How can i open and read the file in byte[] mode?
2. How do we ensure that the @my_d == @my_a[] after we XOr it back? (i've tried it, but it mess up lots of whitespace)
3. Because this is a Crypto-Counter Mode process, do anyone know whats the simplest way of calling them? (rather than recreating these codes above).

Thanx in advance..

In reply to Reading two (2) file in byte[] form and then XOring them by cik_ail

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