Sounds like your binary data is being mistaken for unicode data. Using the bytes pragma, optionally localised around the call to length should fix the problem. 

$s = "\x{200}\x{400}\x{301}";

print length $s;
3

print do{ use bytes; length $s };
6

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In reply to Re: finding length of encrypted(binary) string by BrowserUk
in thread finding length of encrypted(binary) string by linuxfan

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