I've tried directly with $key++

The problem with Perl's string-increment is that the string has to match the pattern /^[a-zA-Z]*[0-9]*\z/ for it to work...(see perlop).  So you'd have to increment the corresponding numeric value, e.g. 

$key = "\x4f\xcb";

for (1..10) {
    $key = pack('n',unpack('n',$key)+1);  # ++
    print unpack("H*", $key), "\n";
}

__END__
4fcc
4fcd
4fce
4fcf
4fd0
4fd1
4fd2
4fd3
4fd4
4fd5

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In reply to Re^3: strings to number and XOR by almut
in thread strings to number and XOR by alager

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